chore: initial commit

Packages/com.kybernetik.animancer/Runtime/AnimancerComponent.cs

@@ -0,0 +1,881 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using Animancer.TransitionLibraries;
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Playables;
+
+namespace Animancer
+{
+    /// <summary>
+    /// The main component through which other scripts can interact with <see cref="Animancer"/>. It allows you to play
+    /// animations on an <see cref="UnityEngine.Animator"/> without using a <see cref="RuntimeAnimatorController"/>.
+    /// </summary>
+    /// <remarks>
+    /// This class can be used as a custom yield instruction to wait until all animations finish playing.
+    /// <para></para>
+    /// This class is mostly just a wrapper that connects an <see cref="AnimancerGraph"/> to an
+    /// <see cref="UnityEngine.Animator"/>.
+    /// <para></para>
+    /// <strong>Documentation:</strong>
+    /// <see href="https://kybernetik.com.au/animancer/docs/manual/playing/component-types">
+    /// Component Types</see>
+    /// </remarks>
+    /// https://kybernetik.com.au/animancer/api/Animancer/AnimancerComponent
+    /// 
+    [AddComponentMenu(Strings.MenuPrefix + "Animancer Component")]
+    [AnimancerHelpUrl(typeof(AnimancerComponent))]
+    [DefaultExecutionOrder(DefaultExecutionOrder)]
+    public class AnimancerComponent : MonoBehaviour,
+        IAnimancerComponent,
+        IEnumerator,
+        IAnimationClipSource,
+        IAnimationClipCollection
+    {
+        /************************************************************************************************************************/
+        #region Fields and Properties
+        /************************************************************************************************************************/
+
+        /// <summary>Initialize before anything else tries to use this component.</summary>
+        public const int DefaultExecutionOrder = -5000;
+
+        /************************************************************************************************************************/
+
+        [SerializeField]
+        [Tooltip("Animancer works by using Unity's Playables API to control an Animator component." +
+            "\n\nThe Animator's Controller field should be empty unless you intend to use it.")]
+        private Animator _Animator;
+
+        /// <summary>[<see cref="SerializeField"/>]
+        /// Animancer works by using Unity's Playables API to control an <see cref="UnityEngine.Animator"/> component.
+        /// </summary>
+        /// <remarks>
+        /// The <see cref="Animator.runtimeAnimatorController"/> should be empty unless you intend to use it.
+        /// </remarks>
+        public Animator Animator
+        {
+            get => _Animator;
+            set
+            {
+                _Animator = value;
+                if (IsGraphInitialized)
+                {
+                    _Graph.DestroyOutput();
+                    _Graph.Initialize(this);
+                }
+            }
+        }
+
+#if UNITY_EDITOR
+        /// <inheritdoc/>
+        string IAnimancerComponent.AnimatorFieldName
+            => nameof(_Animator);
+#endif
+
+        /************************************************************************************************************************/
+
+        [SerializeField]
+        [Tooltip(Strings.ProOnlyTag + "An optional Transition Library" +
+            " which can modify the way Animancer transitions between animations.")]
+        private TransitionLibraryAsset _Transitions;
+
+        /// <summary>[<see cref="SerializeField"/>] [Pro-Only]
+        /// An optional <see cref="TransitionLibraryAsset"/>
+        /// which can modify the way Animancer transitions between animations.
+        /// </summary>
+        public TransitionLibraryAsset Transitions
+        {
+            get => _Transitions;
+            set
+            {
+                _Transitions = value;
+                if (IsGraphInitialized)
+                    _Graph.Transitions = value?.Library;
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        private AnimancerGraph _Graph;
+
+        /// <summary>
+        /// The internal system which manages the playing animations.
+        /// Accessing this property will automatically initialize it.
+        /// </summary>
+        public AnimancerGraph Graph
+        {
+            get
+            {
+                InitializeGraph();
+                return _Graph;
+            }
+        }
+
+        /// <summary>Has the <see cref="Graph"/> been initialized?</summary>
+        public bool IsGraphInitialized
+            => _Graph != null
+            && _Graph.IsValidOrDispose();
+
+        /************************************************************************************************************************/
+
+        /// <summary>The layers which each manage their own set of animations.</summary>
+        public AnimancerLayerList Layers
+            => Graph.Layers;
+
+        /// <summary>The states managed by this component.</summary>
+        public AnimancerStateDictionary States
+            => Graph.States;
+
+        /// <summary>Dynamic parameters which anything can get or set.</summary>
+        public ParameterDictionary Parameters
+            => Graph.Parameters;
+
+        /// <summary>A dictionary of callbacks to be triggered by any event with a matching name.</summary>
+        public NamedEventDictionary Events
+            => Graph.Events;
+
+        /************************************************************************************************************************/
+
+        /// <summary>Returns the <see cref="Graph"/>.</summary>
+        public static implicit operator AnimancerGraph(AnimancerComponent animancer)
+            => animancer.Graph;
+
+        /// <summary>Returns layer 0.</summary>
+        public static implicit operator AnimancerLayer(AnimancerComponent animancer)
+            => animancer.Graph.Layers[0];
+
+        /************************************************************************************************************************/
+
+        [SerializeField, Tooltip("Determines what happens when this component is disabled" +
+            " or its " + nameof(GameObject) + " becomes inactive (i.e. in OnDisable):" +
+            "\n• [" + nameof(DisableAction.Stop) + "] and reset all animations" +
+            "\n• [" + nameof(DisableAction.Pause) + "] to later resume from the current state" +
+            "\n• [" + nameof(DisableAction.Continue) + "] playing while inactive" +
+            "\n• [" + nameof(DisableAction.Reset) + "] to the original values" +
+            "\n• [" + nameof(DisableAction.Destroy) + "] all layers and states" +
+            "\n• If you're only destroying objects and not disabling them," +
+            " using " + nameof(DisableAction.Continue) + " is the most efficient" +
+            " because it avoids wasting performance stopping things that will be destroyed anyway.")]
+        private DisableAction _ActionOnDisable;
+
+#if UNITY_EDITOR
+        /// <summary>[Editor-Only]
+        /// The name of the serialized backing field for the <see cref="ActionOnDisable"/> property.
+        /// </summary>
+        string IAnimancerComponent.ActionOnDisableFieldName
+            => nameof(_ActionOnDisable);
+#endif
+
+        /// <summary>[<see cref="SerializeField"/>]
+        /// Determines what happens when this component is disabled
+        /// or its <see cref="GameObject"/> becomes inactive
+        /// (i.e. in <see cref="OnDisable"/>).
+        /// </summary>
+        /// <remarks>
+        /// The default value is <see cref="DisableAction.Stop"/>.
+        /// <para></para>
+        /// If you're only destroying objects and not disabling them,
+        /// using <see cref="DisableAction.Continue"/> is the most efficient
+        /// because it avoids wasting performance stopping things that will be destroyed anyway.
+        /// </remarks>
+        public ref DisableAction ActionOnDisable
+            => ref _ActionOnDisable;
+
+        /// <inheritdoc/>
+        bool IAnimancerComponent.ResetOnDisable
+            => _ActionOnDisable == DisableAction.Reset;
+
+        /// <summary>
+        /// An action to perform when disabling an <see cref="AnimancerComponent"/>.
+        /// See <see cref="ActionOnDisable"/>.
+        /// </summary>
+        public enum DisableAction
+        {
+            /// <summary>
+            /// Stop and reset all animations, but leave all animated values as they are (unlike <see cref="Reset"/>).
+            /// </summary>
+            /// <remarks>Calls <see cref="Stop()"/> and <see cref="AnimancerGraph.PauseGraph"/>.</remarks>
+            Stop,
+
+            /// <summary>Pause to later resume from the current state.</summary>
+            /// <remarks>Calls <see cref="AnimancerGraph.PauseGraph"/>.</remarks>
+            Pause,
+
+            /// <summary>Keep playing while inactive.</summary>
+            Continue,
+
+            /// <summary>
+            /// Stop all animations, rewind them, and force the object back into its original state
+            /// (often called the bind pose).
+            /// </summary>
+            /// <remarks>
+            /// The <see cref="AnimancerComponent"/> must be either above the <see cref="UnityEngine.Animator"/> in
+            /// the Inspector or on a child object so that so that this <see cref="OnDisable"/> gets called first.
+            /// <para></para>
+            /// Calls <see cref="Stop()"/>, <see cref="Animator.Rebind"/>, and <see cref="AnimancerGraph.PauseGraph"/>.
+            /// </remarks>
+            Reset,
+
+            /// <summary>
+            /// Destroy the <see cref="PlayableGraph"/> and all its layers and states. This means that any layers or
+            /// states referenced by other scripts will no longer be valid so they will need to be recreated if you
+            /// want to use this object again.
+            /// </summary>
+            /// <remarks>Calls <see cref="AnimancerGraph.Destroy()"/>.</remarks>
+            Destroy,
+        }
+
+        /************************************************************************************************************************/
+        #region Update Mode
+        /************************************************************************************************************************/
+
+        /// <summary>Determines when animations are updated and which time source is used.</summary>
+        /// <remarks>
+        /// Note that changing to or from <see cref="AnimatorUpdateMode.AnimatePhysics"/>
+        /// at runtime has no effect due to limitations in the Playables API.
+        /// </remarks>
+        /// <exception cref="NullReferenceException">No <see cref="Animator"/> is assigned.</exception>
+        public AnimatorUpdateMode UpdateMode
+        {
+            get => _Animator.updateMode;
+            set
+            {
+                _Animator.updateMode = value;
+
+                if (!IsGraphInitialized)
+                    return;
+
+                // UnscaledTime on the Animator is actually identical to Normal when using the Playables API so we need
+                // to set the graph's DirectorUpdateMode to determine how it gets its delta time.
+                _Graph.UpdateMode = value == AnimatorUpdateMode.UnscaledTime ?
+                    DirectorUpdateMode.UnscaledGameTime :
+                    DirectorUpdateMode.GameTime;
+
+#if UNITY_EDITOR
+                if (InitialUpdateMode == null)
+                {
+                    InitialUpdateMode = value;
+                }
+                else if (UnityEditor.EditorApplication.isPlaying)
+                {
+                    if (Editor.AnimancerGraphCleanup.HasChangedToOrFromAnimatePhysics(InitialUpdateMode, value))
+                        Debug.LogWarning(
+                            $"Changing the {nameof(Animator)}.{nameof(Animator.updateMode)} to or from " +
+#if UNITY_2023_1_OR_NEWER
+                            nameof(AnimatorUpdateMode.Fixed) +
+#else
+                            nameof(AnimatorUpdateMode.AnimatePhysics) +
+#endif
+                            " at runtime will have no effect." +
+                            " You must set it in the Unity Editor or on startup.", this);
+                }
+#endif
+            }
+        }
+
+        /************************************************************************************************************************/
+
+#if UNITY_EDITOR
+        /// <inheritdoc/>
+        public AnimatorUpdateMode? InitialUpdateMode { get; private set; }
+#endif
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Initialization
+        /************************************************************************************************************************/
+
+#if UNITY_EDITOR
+        /// <summary>[Editor-Only]
+        /// Destroys the <see cref="Graph"/> if it was initialized and searches for an <see cref="Animator"/> on
+        /// this object, or it's children or parents.
+        /// </summary>
+        protected virtual void Reset()
+        {
+            OnDestroy();
+            gameObject.GetComponentInParentOrChildren(ref _Animator);
+        }
+#endif
+
+        /************************************************************************************************************************/
+
+        /// <summary>Ensures that the <see cref="PlayableGraph"/> is playing.</summary>
+        protected virtual void OnEnable()
+        {
+            if (IsGraphInitialized)
+            {
+                _Graph.UnpauseGraph();
+
+#if UNITY_EDITOR
+                AnimancerGraph.ClearInactiveInitializationStackTrace(this);
+#endif
+            }
+        }
+
+        /// <summary>Acts according to the <see cref="ActionOnDisable"/>.</summary>
+        protected virtual void OnDisable()
+        {
+            if (!IsGraphInitialized)
+                return;
+
+            switch (_ActionOnDisable)
+            {
+                case DisableAction.Stop:
+                    _Graph.Stop();
+                    _Graph.PauseGraph();
+                    break;
+
+                case DisableAction.Pause:
+                    _Graph.PauseGraph();
+                    break;
+
+                case DisableAction.Continue:
+                    break;
+
+                case DisableAction.Reset:
+                    Debug.Assert(_Animator.isActiveAndEnabled,
+                        $"{nameof(DisableAction)}.{nameof(DisableAction.Reset)} failed because the {nameof(Animator)}" +
+                        $" is not enabled. This most likely means you are disabling the {nameof(GameObject)} and the" +
+                        $" {nameof(Animator)} is above the {nameof(AnimancerComponent)} in the Inspector so it got" +
+                        $" disabled right before this method was called." +
+                        $" See the Inspector of {this} to fix the issue" +
+                        $" or use {nameof(DisableAction)}.{nameof(DisableAction.Stop)}" +
+                        $" and call {nameof(Animator)}.{nameof(Animator.Rebind)} manually" +
+                        $" before disabling the {nameof(GameObject)}.",
+                        this);
+
+                    _Graph.Stop();
+                    _Animator.Rebind();
+                    _Graph.PauseGraph();
+                    break;
+
+                case DisableAction.Destroy:
+                    _Graph.Destroy();
+                    _Graph = null;
+                    break;
+
+                default:
+                    throw new ArgumentOutOfRangeException(nameof(ActionOnDisable));
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Creates and initializes the <see cref="Graph"/> if it wasn't already initialized.</summary>
+        public void InitializeGraph()
+        {
+            if (IsGraphInitialized)
+                return;
+
+            TryGetAnimator();
+
+            AnimancerGraph.SetNextGraphName(name + " (Animancer)");
+            _Graph = new(_Transitions?.Library);
+            _Graph.Initialize(this);
+            OnInitializeGraph();
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Sets the <see cref="Graph"/> and connects it to the <see cref="Animator"/>.</summary>
+        /// <exception cref="InvalidOperationException">
+        /// The <see cref="AnimancerGraph"/> is already initialized.
+        /// You must call <see cref="AnimancerGraph.Destroy"/> before re-initializing it.
+        /// </exception>
+        public void InitializeGraph(AnimancerGraph graph, bool createOutput = true)
+        {
+            if (IsGraphInitialized)
+                throw new InvalidOperationException(
+                    $"The {nameof(AnimancerGraph)} is already initialized." +
+                    $" Either call this method before anything else uses it or call" +
+                    $" animancerComponent.{nameof(Graph)}.{nameof(AnimancerGraph.Destroy)}" +
+                    $" before re-initializing it.");
+
+            TryGetAnimator();
+
+            _Graph = graph;
+            _Graph.Transitions = _Transitions?.Library;
+            _Graph.Initialize(this, createOutput);
+            OnInitializeGraph();
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Called right after the <see cref="Graph"/> is initialized.</summary>
+        protected virtual void OnInitializeGraph()
+        {
+#if UNITY_ASSERTIONS
+            ValidateGraphInitialization();
+#endif
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Tries to ensure that an <see cref="Animator"/> is present using
+        /// <see cref="Component.TryGetComponent{T}(out T)"/> if necessary.
+        /// </summary>
+        public bool TryGetAnimator()
+            => _Animator != null
+            || TryGetComponent(out _Animator);
+
+        /************************************************************************************************************************/
+
+#if UNITY_ASSERTIONS
+        /// <summary>[Assert-Only]
+        /// Validates various conditions relating to <see cref="AnimancerGraph"/> initialization.
+        /// </summary>
+        private void ValidateGraphInitialization()
+        {
+#if UNITY_EDITOR
+            if (_Animator != null)
+                InitialUpdateMode = UpdateMode;
+
+#if UNITY_IMGUI
+            if (OptionalWarning.CreateGraphDuringGuiEvent.IsEnabled())
+            {
+                var currentEvent = Event.current;
+                if (currentEvent != null)
+                {
+                    var eventType = currentEvent.type;
+                    if (eventType == EventType.Layout ||
+                        eventType == EventType.Repaint)
+                    {
+                        OptionalWarning.CreateGraphDuringGuiEvent.Log(
+                            $"An {nameof(AnimancerGraph)} is being initialized" +
+                            $" during a {eventType} event which is likely undesirable.",
+                            this);
+                    }
+                }
+            }
+#endif
+#endif
+
+            if (_Animator != null)
+            {
+                if (!_Animator.enabled)
+                    OptionalWarning.AnimatorDisabled.Log(Strings.AnimatorDisabledMessage, this);
+
+                if (_Animator.isHuman &&
+                    _Animator.runtimeAnimatorController != null)
+                    OptionalWarning.NativeControllerHumanoid.Log(
+                        $"An Animator Controller is assigned to the {nameof(Animator)} component" +
+                        $" but the Rig is Humanoid so it can't be blended with Animancer." +
+                        $" See the documentation for more information:" +
+                        $" {Strings.DocsURLs.AnimatorControllersNative.AsHtmlLink()}",
+                        this);
+            }
+        }
+#endif
+
+        /************************************************************************************************************************/
+
+        /// <summary>Ensures that the <see cref="Graph"/> is properly cleaned up.</summary>
+        protected virtual void OnDestroy()
+        {
+            if (IsGraphInitialized)
+            {
+                _Graph.Destroy();
+                _Graph = null;
+            }
+        }
+
+        /************************************************************************************************************************/
+
+#if UNITY_EDITOR
+        /// <summary>[Editor-Only]
+        /// Ensures that the <see cref="AnimancerGraph"/> is destroyed in Edit Mode, but not in Play Mode since we want
+        /// to let Unity complain if that happens.
+        /// </summary>
+        ~AnimancerComponent()
+        {
+            if (_Graph != null)
+            {
+                UnityEditor.EditorApplication.delayCall += () =>
+                {
+                    if (!UnityEditor.EditorApplication.isPlayingOrWillChangePlaymode)
+                        OnDestroy();
+                };
+            }
+        }
+#endif
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Play Management
+        /************************************************************************************************************************/
+
+        /// <summary>Returns the `clip` itself.</summary>
+        /// <remarks>
+        /// This method is used to determine the dictionary key to use for an animation when none is specified by the
+        /// caller, such as in <see cref="Play(AnimationClip)"/>.
+        /// </remarks>
+        public virtual object GetKey(AnimationClip clip)
+            => clip;
+
+        /************************************************************************************************************************/
+        // Play Immediately.
+        /************************************************************************************************************************/
+
+        /// <summary>Stops all other animations on the same layer, plays the `clip`, and returns its state.</summary>
+        /// <remarks>
+        /// The animation will continue playing from its current <see cref="AnimancerState.Time"/>.
+        /// To restart it from the beginning you can use <c>...Play(clip).Time = 0;</c>.
+        /// <para></para>
+        /// This method is safe to call repeatedly without checking whether the `clip` was already playing.
+        /// </remarks>
+        public AnimancerState Play(AnimationClip clip)
+            => Graph.Layers[0].Play(States.GetOrCreate(clip));
+
+        /// <summary>Stops all other animations on the same layer, plays the `state`, and returns it.</summary>
+        /// <remarks>
+        /// The animation will continue playing from its current <see cref="AnimancerState.Time"/>.
+        /// To restart it from the beginning you can use <c>...Play(state).Time = 0;</c>.
+        /// <para></para>
+        /// This method is safe to call repeatedly without checking whether the `state` was already playing.
+        /// </remarks>
+        public AnimancerState Play(AnimancerState state)
+            => Graph.Layers[0].Play(state);
+
+        /************************************************************************************************************************/
+        // Cross Fade.
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Starts fading in the `clip` while fading out all other states in the same layer over the course of the
+        /// `fadeDuration`. Returns its state.
+        /// </summary>
+        /// <remarks>
+        /// If the `state` was already playing and fading in with less time remaining than the `fadeDuration`, this
+        /// method will allow it to complete the existing fade rather than starting a slower one.
+        /// <para></para>
+        /// If the layer currently has 0 <see cref="AnimancerNode.Weight"/>, this method will fade in the layer itself
+        /// and simply <see cref="AnimancerState.Play"/> the `state`.
+        /// <para></para>
+        /// This method is safe to call repeatedly without checking whether the `clip` was already playing.
+        /// <para></para>
+        /// <em>Animancer Lite only allows the default `fadeDuration` (0.25 seconds) in runtime builds.</em>
+        /// </remarks>
+        public AnimancerState Play(AnimationClip clip, float fadeDuration, FadeMode mode = default)
+            => Graph.Layers[0].Play(States.GetOrCreate(clip), fadeDuration, mode);
+
+        /// <summary>
+        /// Starts fading in the `state` while fading out all others in the same layer over the course of the
+        /// `fadeDuration`. Returns the `state`.
+        /// </summary>
+        /// <remarks>
+        /// If the `state` was already playing and fading in with less time remaining than the `fadeDuration`, this
+        /// method will allow it to complete the existing fade rather than starting a slower one.
+        /// <para></para>
+        /// If the layer currently has 0 <see cref="AnimancerNode.Weight"/>, this method will fade in the layer itself
+        /// and simply <see cref="AnimancerState.Play"/> the `state`.
+        /// <para></para>
+        /// This method is safe to call repeatedly without checking whether the `state` was already playing.
+        /// <para></para>
+        /// <em>Animancer Lite only allows the default `fadeDuration` (0.25 seconds) in runtime builds.</em>
+        /// </remarks>
+        public AnimancerState Play(AnimancerState state, float fadeDuration, FadeMode mode = default)
+            => Graph.Layers[0].Play(state, fadeDuration, mode);
+
+        /************************************************************************************************************************/
+        // Transition.
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Creates a state for the `transition` if it didn't already exist, then calls
+        /// <see cref="Play(AnimancerState)"/> or <see cref="Play(AnimancerState, float, FadeMode)"/>
+        /// depending on <see cref="ITransition.CrossFadeFromStart"/>.
+        /// </summary>
+        /// <remarks>
+        /// This method is safe to call repeatedly without checking whether the `transition` was already playing.
+        /// </remarks>
+        public AnimancerState Play(ITransition transition)
+            => Graph.Layers[0].Play(transition);
+
+        /// <summary>
+        /// Creates a state for the `transition` if it didn't already exist, then calls
+        /// <see cref="Play(AnimancerState)"/> or <see cref="Play(AnimancerState, float, FadeMode)"/>
+        /// depending on <see cref="ITransition.CrossFadeFromStart"/>.
+        /// </summary>
+        /// <remarks>
+        /// This method is safe to call repeatedly without checking whether the `transition` was already playing.
+        /// </remarks>
+        public AnimancerState Play(ITransition transition, float fadeDuration, FadeMode mode = default)
+            => Graph.Layers[0].Play(transition, fadeDuration, mode);
+
+        /************************************************************************************************************************/
+        // Try Play.
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Stops all other animations on the base layer,
+        /// plays the animation registered with the `key`,
+        /// and returns the animation's state.
+        /// </summary>
+        /// <remarks>
+        /// If no state is registered with the `key`, this method does nothing and returns null.
+        /// <para></para>
+        /// The animation will continue playing from its current <see cref="AnimancerState.Time"/>.
+        /// To restart it from the beginning you can simply set the returned state's time to 0.
+        /// <para></para>
+        /// This method is safe to call repeatedly without checking whether the animation was already playing.
+        /// </remarks>
+        /// <exception cref="ArgumentNullException">The `key` is null.</exception>
+        public AnimancerState TryPlay(object key)
+            => Graph.Layers[0].TryPlay(key);
+
+        /// <summary>
+        /// Stops all other animations on the base layer,
+        /// plays the animation registered with the `key`,
+        /// and returns the animation's state.
+        /// </summary>
+        /// <remarks>
+        /// If no state is registered with the `key`, this method does nothing and returns null.
+        /// <para></para>
+        /// The animation will continue playing from its current <see cref="AnimancerState.Time"/>.
+        /// To restart it from the beginning you can simply set the returned state's time to 0.
+        /// <para></para>
+        /// This method is safe to call repeatedly without checking whether the animation was already playing.
+        /// </remarks>
+        public AnimancerState TryPlay(IHasKey hasKey)
+            => TryPlay(hasKey.Key);
+
+        /// <summary>
+        /// Starts fading in the animation registered with the `key` while fading out all others in the same layer
+        /// over the course of the `fadeDuration`. Or if no state is registered with that `key`, this method does
+        /// nothing and returns null.
+        /// </summary>
+        /// <remarks>
+        /// If the `state` was already playing and fading in with less time remaining than the `fadeDuration`, this
+        /// method will allow it to complete the existing fade rather than starting a slower one.
+        /// <para></para>
+        /// If the layer currently has 0 <see cref="AnimancerNode.Weight"/>, this method will fade in the layer itself
+        /// and simply <see cref="AnimancerState.Play"/> the `state`.
+        /// <para></para>
+        /// This method is safe to call repeatedly without checking whether the animation was already playing.
+        /// <para></para>
+        /// <em>Animancer Lite only allows the default `fadeDuration` (0.25 seconds) in runtime builds.</em>
+        /// </remarks>
+        /// <exception cref="ArgumentNullException">The `key` is null.</exception>
+        public AnimancerState TryPlay(object key, float fadeDuration, FadeMode mode = default)
+            => Graph.Layers[0].TryPlay(key, fadeDuration, mode);
+
+        /// <summary>
+        /// Starts fading in the animation registered with the `key`
+        /// while fading out all others in the same layer over the course of the `fadeDuration`
+        /// and returns the animation's state.
+        /// </summary>
+        /// <remarks>
+        /// If no state is registered with the `key`, this method does nothing and returns null.
+        /// <para></para>
+        /// If the `state` was already playing and fading in with less time remaining than the `fadeDuration`,
+        /// this method allows it to continue the existing fade rather than starting a slower one.
+        /// <para></para>
+        /// If the layer currently has 0 <see cref="AnimancerNode.Weight"/>, this method will
+        /// fade in the layer itself and simply <see cref="AnimancerState.Play"/> the `state`.
+        /// <para></para>
+        /// This method is safe to call repeatedly without checking whether the animation was already playing.
+        /// <para></para>
+        /// <em>Animancer Lite only allows the default `fadeDuration` (0.25 seconds) in runtime builds.</em>
+        /// </remarks>
+        public AnimancerState TryPlay(
+            IHasKey hasKey,
+            float fadeDuration,
+            FadeMode mode = default)
+            => TryPlay(hasKey.Key, fadeDuration, mode);
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Gets the state associated with the `clip`, stops and rewinds it to the start, then returns it.
+        /// </summary>
+        public AnimancerState Stop(AnimationClip clip)
+            => Stop(GetKey(clip));
+
+        /// <summary>
+        /// Gets the state registered with the <see cref="IHasKey.Key"/>, stops and rewinds it to the start, then
+        /// returns it.
+        /// </summary>
+        public AnimancerState Stop(IHasKey hasKey)
+            => _Graph?.Stop(hasKey);
+
+        /// <summary>
+        /// Gets the state associated with the `key`, stops and rewinds it to the start, then returns it.
+        /// </summary>
+        public AnimancerState Stop(object key)
+            => _Graph?.Stop(key);
+
+        /// <summary>Stops all animations and rewinds them to the start.</summary>
+        public void Stop()
+        {
+            if (IsGraphInitialized)
+                _Graph.Stop();
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Returns true if a state is registered for the `clip` and it is currently playing.
+        /// <para></para>
+        /// The actual dictionary key is determined using <see cref="GetKey"/>.
+        /// </summary>
+        public bool IsPlaying(AnimationClip clip)
+            => IsPlaying(GetKey(clip));
+
+        /// <summary>
+        /// Returns true if a state is registered with the <see cref="IHasKey.Key"/> and it is currently playing.
+        /// </summary>
+        public bool IsPlaying(IHasKey hasKey)
+            => IsGraphInitialized
+            && _Graph.IsPlaying(hasKey);
+
+        /// <summary>
+        /// Returns true if a state is registered with the `key` and it is currently playing.
+        /// </summary>
+        public bool IsPlaying(object key)
+            => IsGraphInitialized
+            && _Graph.IsPlaying(key);
+
+        /// <summary>
+        /// Returns true if at least one animation is being played.
+        /// </summary>
+        public bool IsPlaying()
+            => IsGraphInitialized
+            && _Graph.IsPlaying();
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Returns true if the `clip` is currently being played by at least one state.
+        /// <para></para>
+        /// This method is inefficient because it searches through every state to find any that are playing the `clip`,
+        /// unlike <see cref="IsPlaying(AnimationClip)"/> which only checks the state registered using the `clip`s key.
+        /// </summary>
+        public bool IsPlayingClip(AnimationClip clip)
+            => IsGraphInitialized
+            && _Graph.IsPlayingClip(clip);
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Immediately applies the current states of all animations to the animated objects.
+        /// </summary>
+        public void Evaluate()
+            => Graph.Evaluate();
+
+        /// <summary>
+        /// Advances time by the specified value (in seconds)
+        /// and immediately applies the current states of all animations to the animated objects.
+        /// </summary>
+        public void Evaluate(float deltaTime)
+            => Graph.Evaluate(deltaTime);
+
+        /************************************************************************************************************************/
+        #region Key Error Methods
+#if UNITY_EDITOR
+        /************************************************************************************************************************/
+        // These are overloads of other methods that take a System.Object key to ensure the user doesn't try to use an
+        // AnimancerState as a key, since the whole point of a key is to identify a state in the first place.
+        /************************************************************************************************************************/
+
+        /// <summary>[Warning]
+        /// You should not use an <see cref="AnimancerState"/> as a key.
+        /// Just call <see cref="AnimancerState.Stop"/>.
+        /// </summary>
+        [Obsolete("You should not use an AnimancerState as a key. Just call AnimancerState.Stop().", true)]
+        public AnimancerState Stop(AnimancerState key)
+        {
+            key.Stop();
+            return key;
+        }
+
+        /// <summary>[Warning]
+        /// You should not use an <see cref="AnimancerState"/> as a key.
+        /// Just check <see cref="AnimancerState.IsPlaying"/>.
+        /// </summary>
+        [Obsolete("You should not use an AnimancerState as a key. Just check AnimancerState.IsPlaying.", true)]
+        public bool IsPlaying(AnimancerState key)
+            => key.IsPlaying;
+
+        /************************************************************************************************************************/
+#endif
+        #endregion
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Enumeration
+        /************************************************************************************************************************/
+        // IEnumerator for yielding in a coroutine to wait until all animations have stopped.
+        /************************************************************************************************************************/
+
+        /// <summary>Are any animations are still playing?</summary>
+        /// <remarks>This allows this object to be used as a custom yield instruction.</remarks>
+        bool IEnumerator.MoveNext()
+            => IsGraphInitialized
+            && ((IEnumerator)_Graph).MoveNext();
+
+        /// <summary>Returns null.</summary>
+        object IEnumerator.Current
+            => null;
+
+        /// <summary>Does nothing.</summary>
+        void IEnumerator.Reset()
+        { }
+
+        /************************************************************************************************************************/
+
+        /// <summary>[<see cref="IAnimationClipSource"/>]
+        /// Calls <see cref="GatherAnimationClips(ICollection{AnimationClip})"/>.
+        /// </summary>
+        public void GetAnimationClips(List<AnimationClip> clips)
+        {
+            var set = SetPool.Acquire<AnimationClip>();
+            set.UnionWith(clips);
+
+            GatherAnimationClips(set);
+
+            clips.Clear();
+
+            foreach (var clip in set)
+                if (clip != null)
+                    clips.Add(clip);
+
+            SetPool.Release(set);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>[<see cref="IAnimationClipCollection"/>]
+        /// Gathers all the animations in the <see cref="Transitions"/> and <see cref="Graph"/>.
+        /// </summary>
+        /// <remarks>
+        /// In the Unity Editor this method also gathers animations from other components on parent and child objects.
+        /// </remarks>
+        public virtual void GatherAnimationClips(ICollection<AnimationClip> clips)
+        {
+            if (_Transitions != null)
+                _Transitions.GatherAnimationClips(clips);
+
+            if (IsGraphInitialized)
+                _Graph.GatherAnimationClips(clips);
+
+#if UNITY_EDITOR
+            Editor.AnimationGatherer.GatherFromGameObject(gameObject, clips);
+
+            if (_Animator != null && _Animator.gameObject != gameObject)
+                Editor.AnimationGatherer.GatherFromGameObject(_Animator.gameObject, clips);
+#endif
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/AnimancerComponent.cs.meta

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Packages/com.kybernetik.animancer/Runtime/Controller States.meta

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Packages/com.kybernetik.animancer/Runtime/Controller States/ControllerState.ParameterBinding.cs

@@ -0,0 +1,472 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace Animancer
+{
+    /// https://kybernetik.com.au/animancer/api/Animancer/ControllerState
+    partial class ControllerState
+    {
+        /************************************************************************************************************************/
+
+        private SerializableParameterBindings _SerializedParameterBindings;
+
+        /// <summary>Serialized data used to create <see cref="ParameterBinding{T}"/>s at runtime.</summary>
+        public SerializableParameterBindings SerializedParameterBindings
+        {
+            get => _SerializedParameterBindings;
+            set
+            {
+                _SerializedParameterBindings = value;
+                DeserializeParameterBindings();
+            }
+        }
+
+        /// <summary>Deserializes the <see cref="SerializedParameterBindings"/>.</summary>
+        private void DeserializeParameterBindings()
+        {
+            if (Graph == null)
+                return;
+
+            DisposeParameterBindings();
+            _SerializedParameterBindings?.Deserialize(this);
+        }
+
+        /************************************************************************************************************************/
+
+        private List<IDisposable> _ParameterBindings;
+
+        /// <summary>
+        /// Adds an object to a list for <see cref="IDisposable.Dispose"/>
+        /// to be called in <see cref="Destroy"/>.
+        /// </summary>
+        private void AddParameterBinding(IDisposable disposable)
+        {
+            _ParameterBindings ??= new();
+            _ParameterBindings.Add(disposable);
+        }
+
+        /// <summary>Disposes everything added by <see cref="AddParameterBinding"/>.</summary>
+        private void DisposeParameterBindings()
+        {
+            if (_ParameterBindings == null)
+                return;
+
+            for (int i = _ParameterBindings.Count - 1; i >= 0; i--)
+                _ParameterBindings[i].Dispose();
+
+            _ParameterBindings.Clear();
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Configures all parameters in the <see cref="Controller"/>
+        /// to follow the value of a parameter with the same name in the <see cref="AnimancerGraph.Parameters"/>.
+        /// </summary>
+        public void BindAllParameters()
+        {
+            var count = Playable.GetParameterCount();
+            for (int i = 0; i < count; i++)
+            {
+                var parameter = Playable.GetParameter(i);
+                BindParameter(parameter.name, parameter);
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Configures a parameter in the <see cref="Controller"/>
+        /// to follow the value of a parameter with the same name in the <see cref="AnimancerGraph.Parameters"/>.
+        /// </summary>
+        public void BindParameter(StringReference name)
+            => BindParameter(name, name);
+
+        /// <summary>
+        /// Configures a parameter in the <see cref="Controller"/>
+        /// to follow the value of a parameter in the <see cref="AnimancerGraph.Parameters"/>.
+        /// </summary>
+        public void BindParameter(StringReference animancerParameter, string controllerParameterName)
+            => BindParameter(animancerParameter, Animator.StringToHash(controllerParameterName));
+
+        /// <summary>
+        /// Configures a parameter in the <see cref="Controller"/>
+        /// to follow the value of a parameter in the <see cref="AnimancerGraph.Parameters"/>.
+        /// </summary>
+        public void BindParameter(StringReference animancerParameter, int controllerParameterHash)
+        {
+            var count = Playable.GetParameterCount();
+            for (int i = 0; i < count; i++)
+            {
+                var parameter = Playable.GetParameter(i);
+                if (parameter.nameHash == controllerParameterHash)
+                {
+                    BindParameter(animancerParameter, parameter);
+                    break;
+                }
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Configures all parameters in the <see cref="Controller"/>
+        /// to follow the value of a parameter with the same name in the <see cref="AnimancerGraph.Parameters"/>.
+        /// </summary>
+        public void BindParameter(
+            StringReference animancerParameter,
+            AnimatorControllerParameter controllerParameter)
+        {
+            switch (controllerParameter.type)
+            {
+                case AnimatorControllerParameterType.Float:
+                    BindFloat(animancerParameter, controllerParameter.nameHash);
+                    break;
+
+                case AnimatorControllerParameterType.Int:
+                    BindInt(animancerParameter, controllerParameter.nameHash);
+                    break;
+
+                case AnimatorControllerParameterType.Bool:
+                case AnimatorControllerParameterType.Trigger:
+                    BindBool(animancerParameter, controllerParameter.nameHash);
+                    break;
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Configures a parameter in the <see cref="Controller"/>
+        /// to follow the value of a parameter with the same name in the <see cref="AnimancerGraph.Parameters"/>.
+        /// </summary>
+        public ParameterBinding<bool> BindBool(StringReference name)
+            => BindBool(name, name);
+
+        /// <summary>
+        /// Configures a parameter in the <see cref="Controller"/>
+        /// to follow the value of a parameter in the <see cref="AnimancerGraph.Parameters"/>.
+        /// </summary>
+        public ParameterBinding<bool> BindBool(StringReference animancerParameter, string controllerParameterName)
+            => BindBool(animancerParameter, Animator.StringToHash(controllerParameterName));
+
+        /// <summary>
+        /// Configures a parameter in the <see cref="Controller"/>
+        /// to follow the value of a parameter in the <see cref="AnimancerGraph.Parameters"/>.
+        /// </summary>
+        public ParameterBinding<bool> BindBool(StringReference animancerParameter, int controllerParameterHash)
+        {
+            var parameter = Graph.Parameters.GetOrCreate<bool>(animancerParameter);
+            var binding = new ParameterBinding<bool>(
+                parameter,
+                value => Playable.SetBool(controllerParameterHash, value));
+            AddParameterBinding(binding);
+            return binding;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Configures a parameter in the <see cref="Controller"/>
+        /// to follow the value of a parameter with the same name in the <see cref="AnimancerGraph.Parameters"/>.
+        /// </summary>
+        public ParameterBinding<float> BindFloat(StringReference name)
+            => BindFloat(name, name);
+
+        /// <summary>
+        /// Configures a parameter in the <see cref="Controller"/>
+        /// to follow the value of a parameter in the <see cref="AnimancerGraph.Parameters"/>.
+        /// </summary>
+        public ParameterBinding<float> BindFloat(StringReference animancerParameter, string controllerParameterName)
+            => BindFloat(animancerParameter, Animator.StringToHash(controllerParameterName));
+
+        /// <summary>
+        /// Configures a parameter in the <see cref="Controller"/>
+        /// to follow the value of a parameter in the <see cref="AnimancerGraph.Parameters"/>.
+        /// </summary>
+        public ParameterBinding<float> BindFloat(StringReference animancerParameter, int controllerParameterHash)
+        {
+            var parameter = Graph.Parameters.GetOrCreate<float>(animancerParameter);
+            var binding = new ParameterBinding<float>(
+                parameter,
+                value => Playable.SetFloat(controllerParameterHash, value));
+            AddParameterBinding(binding);
+            return binding;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Configures a parameter in the <see cref="Controller"/>
+        /// to follow the value of a parameter with the same name in the <see cref="AnimancerGraph.Parameters"/>.
+        /// </summary>
+        public ParameterBinding<int> BindInt(StringReference name)
+            => BindInt(name, name);
+
+        /// <summary>
+        /// Configures a parameter in the <see cref="Controller"/>
+        /// to follow the value of a parameter in the <see cref="AnimancerGraph.Parameters"/>.
+        /// </summary>
+        public ParameterBinding<int> BindInt(StringReference animancerParameter, string controllerParameterName)
+            => BindInt(animancerParameter, Animator.StringToHash(controllerParameterName));
+
+        /// <summary>
+        /// Configures a parameter in the <see cref="Controller"/>
+        /// to follow the value of a parameter in the <see cref="AnimancerGraph.Parameters"/>.
+        /// </summary>
+        public ParameterBinding<int> BindInt(StringReference animancerParameter, int controllerParameterHash)
+        {
+            var parameter = Graph.Parameters.GetOrCreate<int>(animancerParameter);
+            var binding = new ParameterBinding<int>(
+                parameter,
+                value => Playable.SetInteger(controllerParameterHash, value));
+            AddParameterBinding(binding);
+            return binding;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>An <see cref="IDisposable"/> binding to <see cref="Parameter{T}.OnValueChanged"/>.</summary>
+        /// https://kybernetik.com.au/animancer/api/Animancer/ParameterBinding_1
+        public class ParameterBinding<T> : IDisposable
+        {
+            /************************************************************************************************************************/
+
+            /// <summary>The parameter being watched.</summary>
+            public readonly Parameter<T> Parameter;
+
+            /// <summary>The callback to invoke when the parameter changes.</summary>
+            public readonly Action<T> OnParameterChanged;
+
+            /************************************************************************************************************************/
+
+            /// <summary>
+            /// Invokes `onParameterChanged` and adds it to the <see cref="Parameter{T}.OnValueChanged"/>
+            /// to be removed by <see cref="Dispose"/>.
+            /// </summary>
+            public ParameterBinding(
+                Parameter<T> parameter,
+                Action<T> onParameterChanged)
+            {
+                Parameter = parameter;
+                OnParameterChanged = onParameterChanged;
+
+                OnParameterChanged(Parameter.Value);
+                Parameter.OnValueChanged += OnParameterChanged;
+            }
+
+            /************************************************************************************************************************/
+
+            /// <summary>
+            /// Removes <see cref="OnParameterChanged"/> from the <see cref="Parameter{T}.OnValueChanged"/>.
+            /// </summary>
+            public void Dispose()
+            {
+                Parameter.OnValueChanged -= OnParameterChanged;
+            }
+
+            /************************************************************************************************************************/
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// A serializable array of data which can create <see cref="ParameterBinding{T}"/>s at runtime.
+        /// </summary>
+        /// <remarks>
+        /// This data contains a <see cref="Bindings"/> array and <see cref="Mode"/> flag:
+        /// <list type="bullet">
+        /// 
+        /// <item>
+        /// If the array is empty,
+        /// <c>true</c> will bind all parameters by name
+        /// and <c>false</c> will bind nothing.
+        /// </item>
+        /// 
+        /// <item>
+        /// Otherwise, <c>true</c> will bind <c>[i * 2]</c> in the <see cref="RuntimeAnimatorController"/>
+        /// to <c>[i * 2 + 1]</c> in the <see cref="AnimancerGraph.Parameters"/>.
+        /// </item>
+        /// 
+        /// <item>
+        /// And <c>false</c> will bind each of its parameters to the same name in both systems.
+        /// </item>
+        /// 
+        /// </list>
+        /// </remarks>
+        /// https://kybernetik.com.au/animancer/api/Animancer/SerializableParameterBindings
+        [Serializable]
+        public class SerializableParameterBindings :
+            ICloneable<SerializableParameterBindings>
+        {
+            /************************************************************************************************************************/
+
+            [SerializeField]
+            private bool _Mode;
+
+            /// <summary>[<see cref="SerializeField"/>]
+            /// Modifies the way the <see cref="Bindings"/> array is interpreted.
+            /// </summary>
+            /// <remarks>See the <see cref="SerializableParameterBindings"/> class for details.</remarks>
+            public ref bool Mode
+                => ref _Mode;
+
+#if UNITY_EDITOR
+            /// <summary>[Editor-Only] The name of the serialized backing field of <see cref="Mode"/>.</summary>
+            public const string ModeFieldName = nameof(_Mode);
+#endif
+
+            /************************************************************************************************************************/
+
+            /// <summary>[<see cref="SerializeField"/>]
+            /// Should all parameters in the <see cref="RuntimeAnimatorController"/> be bound by name?
+            /// </summary>
+            /// <remarks>See the <see cref="SerializableParameterBindings"/> class for details.</remarks>
+            public bool BindAllParameters
+            {
+                get => _Mode && _Bindings.Length == 0;
+                set
+                {
+                    _Mode = value;
+
+                    if (value)
+                    {
+                        _Bindings = Array.Empty<StringAsset>();
+                    }
+                    else
+                    {
+                        Debug.Assert(
+                            _Bindings.Length == 0,
+                            $"{nameof(BindAllParameters)} can't be disabled unless the {nameof(Bindings)}" +
+                            $" array is empty because it changes the meaning of that array.");
+                    }
+                }
+            }
+
+            /************************************************************************************************************************/
+
+            /// <summary>[<see cref="SerializeField"/>]
+            /// Should the <see cref="Bindings"/> be grouped into pairs
+            /// to bind each <see cref="RuntimeAnimatorController"/> parameter
+            /// to the subsequent parameter in <see cref="AnimancerGraph.Parameters"/>?
+            /// </summary>
+            /// <remarks>See the <see cref="SerializableParameterBindings"/> class for details.</remarks>
+            public bool RebindNames
+            {
+                get => _Mode && _Bindings.Length > 0;
+                set
+                {
+                    _Mode = value;
+
+                    if (value)
+                    {
+                        if (_Bindings.Length % 2 != 0)
+                            Array.Resize(ref _Bindings, _Bindings.Length + 1);
+                    }
+                    else
+                    {
+                        Debug.Assert(
+                            _Bindings.Length == 0,
+                            $"{nameof(RebindNames)} can't be disabled unless the {nameof(Bindings)}" +
+                            $" array is empty because it changes the meaning of that array.");
+                    }
+                }
+            }
+
+            /************************************************************************************************************************/
+
+            [SerializeField]
+            private StringAsset[] _Bindings = Array.Empty<StringAsset>();
+
+            /// <summary>[<see cref="SerializeField"/>]
+            /// Parameter names used to have parameters in the <see cref="RuntimeAnimatorController"/>
+            /// follow the value of parameters in the <see cref="AnimancerGraph.Parameters"/>.
+            /// </summary>
+            /// <remarks>See the <see cref="SerializableParameterBindings"/> class for details.</remarks>
+            public StringAsset[] Bindings
+            {
+                get => _Bindings;
+                set
+                {
+                    Debug.Assert(
+                        value != null,
+                        $"{nameof(Bindings)} can't be null. Use Array.Empty<StringAsset>() instead.");
+
+                    _Bindings = value;
+                }
+            }
+
+#if UNITY_EDITOR
+            /// <summary>[Editor-Only] The name of the serialized backing field of <see cref="Bindings"/>.</summary>
+            public const string BindingsFieldName = nameof(_Bindings);
+#endif
+
+            /************************************************************************************************************************/
+
+            /// <summary>Creates runtime bindings for the `state`.</summary>
+            /// <remarks>See the <see cref="SerializableParameterBindings"/> class for details.</remarks>
+            public void Deserialize(ControllerState state)
+            {
+                if (_Bindings.Length == 0)
+                {
+                    if (_Mode)
+                        state.BindAllParameters();
+                    // Else do nothing.
+                }
+                else
+                {
+                    if (_Mode)
+                    {
+                        for (int i = 0; i < _Bindings.Length - 1; i += 2)
+                        {
+                            var controller = _Bindings[i];
+                            var animancer = _Bindings[i + 1];
+                            if (controller == null ||
+                                animancer == null)
+                                continue;
+
+                            state.BindParameter(animancer, controller);
+                        }
+                    }
+                    else
+                    {
+                        for (int i = 0; i < _Bindings.Length; i++)
+                        {
+                            var name = _Bindings[i];
+                            if (name == null)
+                                continue;
+
+                            state.BindParameter(name);
+                        }
+                    }
+                }
+            }
+
+            /************************************************************************************************************************/
+
+            /// <inheritdoc/>
+            public SerializableParameterBindings Clone(CloneContext context)
+            {
+                var bindingCount = Bindings != null ? Bindings.Length : 0;
+                var clone = new SerializableParameterBindings()
+                {
+                    BindAllParameters = BindAllParameters,
+                    Bindings = new StringAsset[bindingCount],
+                };
+
+                for (int i = 0; i < bindingCount; i++)
+                    clone.Bindings[i] = context.GetCloneOrOriginal(Bindings[i]);
+
+                return clone;
+            }
+
+            /************************************************************************************************************************/
+        }
+
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Controller States/ControllerState.ParameterBinding.cs.meta

@@ -0,0 +1,13 @@
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Packages/com.kybernetik.animancer/Runtime/Controller States/ControllerState.cs

@@ -0,0 +1,887 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System;
+using System.Collections.Generic;
+using System.Runtime.CompilerServices;
+using UnityEngine;
+using UnityEngine.Animations;
+using UnityEngine.Playables;
+using Object = UnityEngine.Object;
+
+namespace Animancer
+{
+    /// <summary>[Pro-Only]
+    /// An <see cref="AnimancerState"/> which plays a <see cref="RuntimeAnimatorController"/>.
+    /// </summary>
+    /// <remarks>
+    /// This state can be controlled very similarly to an <see cref="Animator"/>
+    /// via its <see cref="Playable"/> property.
+    /// <para></para>
+    /// <strong>Documentation:</strong>
+    /// <see href="https://kybernetik.com.au/animancer/docs/manual/animator-controllers">
+    /// Animator Controllers</see>
+    /// </remarks>
+    /// https://kybernetik.com.au/animancer/api/Animancer/ControllerState
+    /// 
+    public partial class ControllerState : AnimancerState,
+        ICopyable<ControllerState>,
+        IParametizedState,
+        IUpdatable
+    {
+        /************************************************************************************************************************/
+        #region Fields and Properties
+        /************************************************************************************************************************/
+
+        private RuntimeAnimatorController _Controller;
+
+        /// <summary>The <see cref="RuntimeAnimatorController"/> which this state plays.</summary>
+        public RuntimeAnimatorController Controller
+        {
+            get => _Controller;
+            set => ChangeMainObject(ref _Controller, value);
+        }
+
+        /// <summary>The <see cref="RuntimeAnimatorController"/> which this state plays.</summary>
+        public override Object MainObject
+        {
+            get => Controller;
+            set => Controller = (RuntimeAnimatorController)value;
+        }
+
+#if UNITY_EDITOR
+        /// <inheritdoc/>
+        public override Type MainObjectType
+            => typeof(RuntimeAnimatorController);
+#endif
+
+        /************************************************************************************************************************/
+
+        private new AnimatorControllerPlayable _Playable;
+
+        /// <summary>The internal system which plays the <see cref="RuntimeAnimatorController"/>.</summary>
+        public new AnimatorControllerPlayable Playable
+        {
+            get
+            {
+                Validate.AssertPlayable(this);
+                return _Playable;
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Determines what a layer does when <see cref="AnimancerNode.Stop"/> is called.</summary>
+        public enum ActionOnStop
+        {
+            /// <summary>Reset the layer to the first state it was in.</summary>
+            DefaultState,
+
+            /// <summary>Rewind the current state's time to 0.</summary>
+            RewindTime,
+
+            /// <summary>Allow the current state to stay at its current time.</summary>
+            Continue,
+        }
+
+        /// <summary>Determines what each layer does when <see cref="AnimancerNode.Stop"/> is called.</summary>
+        /// <remarks>
+        /// If empty, all layers will reset to their <see cref="ActionOnStop.DefaultState"/>.
+        /// <para></para>
+        /// If this array is smaller than the <see cref="AnimatorControllerPlayable.GetLayerCount"/>,
+        /// any additional layers will use the last value in this array.
+        /// </remarks>
+        public ActionOnStop[] ActionsOnStop { get; set; }
+
+        /// <summary>
+        /// The <see cref="AnimatorStateInfo.shortNameHash"/> of the default state on each layer,
+        /// used to reset to those states when <see cref="ApplyActionsOnStop"/>
+        /// is called for layers using <see cref="ActionOnStop.DefaultState"/>.
+        /// </summary>
+        /// <remarks>Gathered automatically by <see cref="GatherDefaultStates"/>.</remarks>
+        public int[] DefaultStateHashes { get; set; }
+
+        /************************************************************************************************************************/
+#if UNITY_ASSERTIONS
+        /************************************************************************************************************************/
+
+        /// <summary>[Assert-Only] Animancer Events work badly on <see cref="ControllerState"/>s.</summary>
+        protected internal override string UnsupportedEventsMessage =>
+            "Animancer Events on " + nameof(ControllerState) + "s will probably not work as expected." +
+            " The events will be associated with the entire Animator Controller and be triggered by any of the" +
+            " states inside it. If you want to use events in an Animator Controller you will likely need to use" +
+            " Unity's regular Animation Event system.";
+
+        /************************************************************************************************************************/
+#endif
+        /************************************************************************************************************************/
+
+        /// <summary>[Assert-Conditional] Asserts that the `value` is valid for a parameter.</summary>
+        /// <exception cref="ArgumentOutOfRangeException">The `value` is NaN or Infinity.</exception>
+        [System.Diagnostics.Conditional(Strings.Assertions)]
+        public void AssertParameterValue(float value, [CallerMemberName] string parameterName = null)
+        {
+            if (!value.IsFinite())
+            {
+                MarkAsUsed(this);
+                throw new ArgumentOutOfRangeException(parameterName, Strings.MustBeFinite);
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>IK cannot be dynamically enabled on a <see cref="ControllerState"/>.</summary>
+        public override void CopyIKFlags(AnimancerNodeBase copyFrom) { }
+
+        /************************************************************************************************************************/
+
+        /// <summary>IK cannot be dynamically enabled on a <see cref="ControllerState"/>.</summary>
+        public override bool ApplyAnimatorIK
+        {
+            get => false;
+            set
+            {
+#if UNITY_ASSERTIONS
+                if (value)
+                    OptionalWarning.UnsupportedIK.Log(
+                        $"IK cannot be dynamically enabled on a {nameof(ControllerState)}." +
+                        " You must instead enable it on the desired layer inside the Animator Controller.",
+                        _Controller);
+#endif
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>IK cannot be dynamically enabled on a <see cref="ControllerState"/>.</summary>
+        public override bool ApplyFootIK
+        {
+            get => false;
+            set
+            {
+#if UNITY_ASSERTIONS
+                if (value)
+                    OptionalWarning.UnsupportedIK.Log(
+                        $"IK cannot be dynamically enabled on a {nameof(ControllerState)}." +
+                        " You must instead enable it on the desired state inside the Animator Controller.",
+                        _Controller);
+#endif
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Returns the hash of a parameter being wrapped by this state.</summary>
+        /// <exception cref="NotSupportedException">This state doesn't wrap any parameters.</exception>
+        public virtual int GetParameterHash(int index)
+        {
+            MarkAsUsed(this);
+            throw new NotSupportedException();
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public virtual void GetParameters(List<StateParameterDetails> parameters) { }
+
+        /// <inheritdoc/>
+        public virtual void SetParameters(List<StateParameterDetails> parameters) { }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Public API
+        /************************************************************************************************************************/
+
+        /// <summary>Creates a new <see cref="ControllerState"/> to play the `controller`.</summary>
+        public ControllerState(RuntimeAnimatorController controller)
+        {
+            _Controller = controller != null
+                ? controller
+                : throw new ArgumentNullException(nameof(controller));
+        }
+
+        /// <summary>Creates a new <see cref="ControllerState"/> to play the `controller`.</summary>
+        public ControllerState(RuntimeAnimatorController controller, params ActionOnStop[] actionsOnStop)
+            : this(controller)
+        {
+            ActionsOnStop = actionsOnStop;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Creates and assigns the <see cref="AnimatorControllerPlayable"/> managed by this state.</summary>
+        protected override void CreatePlayable(out Playable playable)
+        {
+            playable = _Playable = AnimatorControllerPlayable.Create(Graph._PlayableGraph, _Controller);
+            GatherDefaultStates();
+            DeserializeParameterBindings();
+
+#if UNITY_ASSERTIONS
+            var animator = Graph.Component?.Animator;
+            if (animator != null && animator.runtimeAnimatorController != null)
+            {
+                var usingType = Graph.Component is HybridAnimancerComponent
+                    ? Graph.Component.GetType()
+                    : GetType();
+
+                OptionalWarning.NativeControllerState.Log(
+                    $"An Animator Controller is assigned to the {nameof(Animator)} component" +
+                    $" while also using a {usingType.Name}." +
+                    $" Most likely only one of them is being used so the other should be removed." +
+                    $" See the documentation for more information:" +
+                    $" {Strings.DocsURLs.AnimatorControllers.AsHtmlLink()}",
+                    this);
+            }
+#endif
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Stores the values of all parameters and calls <see cref="AnimancerNode.RecreatePlayable"/>,
+        /// then restores the parameter values.
+        /// </summary>
+        public override void RecreatePlayable()
+        {
+            if (!_Playable.IsValid())
+            {
+                CreatePlayable();
+                return;
+            }
+
+            var parameterNameToValue = DictionaryPool.Acquire<string, object>();
+
+            var parameterCount = _Playable.GetParameterCount();
+            for (int i = 0; i < parameterCount; i++)
+            {
+                var parameter = _Playable.GetParameter(i);
+                var value = AnimancerUtilities.GetParameterValue(_Playable, parameter);
+                parameterNameToValue[parameter.name] = value;
+            }
+
+            base.RecreatePlayable();
+
+            parameterCount = _Playable.GetParameterCount();
+            for (int i = 0; i < parameterCount; i++)
+            {
+                var parameter = _Playable.GetParameter(i);
+                if (parameterNameToValue.TryGetValue(parameter.name, out var value))
+                    AnimancerUtilities.TrySetParameterValue(_Playable, parameter, value);
+            }
+
+            DictionaryPool.Release(parameterNameToValue);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Returns the current state on the specified `layer`,
+        /// or the next state if it is currently in a transition.
+        /// </summary>
+        public AnimatorStateInfo GetStateInfo(int layerIndex)
+        {
+            if (!_Playable.IsValid())
+                return default;
+
+            Validate.AssertPlayable(this);
+            return _Playable.IsInTransition(layerIndex)
+                ? _Playable.GetNextAnimatorStateInfo(layerIndex)
+                : _Playable.GetCurrentAnimatorStateInfo(layerIndex);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// The <see cref="AnimatorStateInfo.normalizedTime"/> * <see cref="AnimatorStateInfo.length"/> of layer 0.
+        /// </summary>
+        public override double RawTime
+        {
+            get
+            {
+                var info = GetStateInfo(0);
+                return info.normalizedTime * info.length;
+            }
+            set
+            {
+                Validate.AssertPlayable(this);
+                _Playable.PlayInFixedTime(0, 0, (float)value);
+
+                // Setting the time requires it to be playing.
+                // This will leave it at the specified time.
+                if (!IsPlaying)
+                {
+                    _Playable.Play();
+                    Graph.RequirePostUpdate(this);
+                }
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        int IUpdatable.UpdatableIndex { get; set; } = IUpdatable.List.NotInList;
+
+        /************************************************************************************************************************/
+
+        /// <summary>Pauses the <see cref="Playable"/> if necessary after <see cref="RawTime"/> was set.</summary>
+        void IUpdatable.Update()
+        {
+            if (!IsPlaying)
+                _Playable.Pause();
+
+            AnimancerGraph.Current.CancelPostUpdate(this);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override void SetGraph(AnimancerGraph graph)
+        {
+            if (Graph == graph)
+                return;
+
+            Graph?.CancelPostUpdate(this);
+
+            base.SetGraph(graph);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>The current <see cref="AnimatorStateInfo.length"/> of layer 0.</summary>
+        public override float Length => GetStateInfo(0).length;
+
+        /************************************************************************************************************************/
+
+        /// <summary>The current <see cref="AnimatorStateInfo.loop"/> of layer 0.</summary>
+        public override bool IsLooping => GetStateInfo(0).loop;
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override AnimancerEvent.DispatchInfo GetEventDispatchInfo()
+        {
+            var state = GetStateInfo(0);
+            return new(
+                state.length,
+                state.normalizedTime,
+                state.loop);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Gathers the <see cref="DefaultStateHashes"/> from the current states on each layer.</summary>
+        /// <remarks>This is called by <see cref="CreatePlayable(out UnityEngine.Playables.Playable)"/>.</remarks>
+        public void GatherDefaultStates()
+        {
+            Validate.AssertPlayable(this);
+
+            var layerCount = _Playable.GetLayerCount();
+
+            if (DefaultStateHashes == null || DefaultStateHashes.Length != layerCount)
+                DefaultStateHashes = new int[layerCount];
+
+            while (--layerCount >= 0)
+                DefaultStateHashes[layerCount] = _Playable.GetCurrentAnimatorStateInfo(layerCount).shortNameHash;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Stops the animation and makes it inactive immediately so it no longer affects the output.
+        /// Also calls <see cref="ApplyActionsOnStop"/>.
+        /// </summary>
+        protected internal override void StopWithoutWeight()
+        {
+            // Don't call base.StopWithoutWeight(); because it sets Time = 0;
+            // which uses PlayInFixedTime and interferes with resetting to the default states.
+
+            SetIsPlaying(false);
+            UpdateIsActive();
+
+            ApplyActionsOnStop();
+
+            _SmoothingVelocities?.Clear();
+        }
+
+        /// <summary>Applies the <see cref="ActionsOnStop"/> to their corresponding layers.</summary>
+        /// <exception cref="NullReferenceException"><see cref="DefaultStateHashes"/> is null.</exception>
+        public void ApplyActionsOnStop()
+        {
+            Validate.AssertPlayable(this);
+
+            var layerCount = Math.Min(DefaultStateHashes.Length, _Playable.GetLayerCount());
+
+            if (ActionsOnStop == null || ActionsOnStop.Length == 0)
+            {
+                for (int i = layerCount - 1; i >= 0; i--)
+                    _Playable.Play(DefaultStateHashes[i], i, 0);
+            }
+            else
+            {
+                for (int i = layerCount - 1; i >= 0; i--)
+                {
+                    var index = i < ActionsOnStop.Length
+                        ? i
+                        : ActionsOnStop.Length - 1;
+
+                    switch (ActionsOnStop[index])
+                    {
+                        case ActionOnStop.DefaultState:
+                            _Playable.Play(DefaultStateHashes[i], i, 0);
+                            break;
+
+                        case ActionOnStop.RewindTime:
+                            _Playable.Play(0, i, 0);
+                            break;
+
+                        case ActionOnStop.Continue:
+                            break;
+                    }
+                }
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override void GatherAnimationClips(ICollection<AnimationClip> clips)
+        {
+            if (_Controller != null)
+                clips.Gather(_Controller.animationClips);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override void Destroy()
+        {
+            _Controller = null;
+            DisposeParameterBindings();
+            base.Destroy();
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override AnimancerState Clone(CloneContext context)
+        {
+            var clone = new ControllerState(_Controller);
+            clone.CopyFrom(this, context);
+            return clone;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public sealed override void CopyFrom(AnimancerState copyFrom, CloneContext context)
+            => this.CopyFromBase(copyFrom, context);
+
+        /// <inheritdoc/>
+        public virtual void CopyFrom(ControllerState copyFrom, CloneContext context)
+        {
+            ActionsOnStop = copyFrom.ActionsOnStop;
+
+            if (copyFrom.Graph != null &&
+                Graph != null)
+            {
+                var layerCount = copyFrom._Playable.GetLayerCount();
+                for (int i = 0; i < layerCount; i++)
+                {
+                    var info = copyFrom._Playable.GetCurrentAnimatorStateInfo(i);
+                    _Playable.Play(info.shortNameHash, i, info.normalizedTime);
+                }
+
+                var parameterCount = copyFrom._Playable.GetParameterCount();
+                for (int i = 0; i < parameterCount; i++)
+                {
+                    AnimancerUtilities.CopyParameterValue(
+                        copyFrom._Playable,
+                        _Playable,
+                        copyFrom._Playable.GetParameter(i));
+                }
+            }
+
+            CopySmoothingVelocitiesFrom(copyFrom);
+
+            base.CopyFrom(copyFrom, context);
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Animator Controller Wrappers
+        /************************************************************************************************************************/
+        #region Cross Fade
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// The default constant for fade duration parameters which causes it to use the
+        /// <see cref="AnimancerGraph.DefaultFadeDuration"/> instead.
+        /// </summary>
+        public const float DefaultFadeDuration = -1;
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Returns the `fadeDuration` if it is zero or positive.
+        /// Otherwise returns the <see cref="AnimancerGraph.DefaultFadeDuration"/>.
+        /// </summary>
+        public static float GetFadeDuration(float fadeDuration)
+            => fadeDuration >= 0
+            ? fadeDuration
+            : AnimancerGraph.DefaultFadeDuration;
+
+        /************************************************************************************************************************/
+
+        /// <summary>Starts a transition from the current state to the specified state using normalized times.</summary>
+        /// <remarks>If `fadeDuration` is negative, it uses the <see cref="AnimancerGraph.DefaultFadeDuration"/>.</remarks>
+        public void CrossFade(
+            int stateNameHash,
+            float fadeDuration = DefaultFadeDuration,
+            int layer = -1,
+            float normalizedTime = float.NegativeInfinity)
+            => Playable.CrossFade(stateNameHash, GetFadeDuration(fadeDuration), layer, normalizedTime);
+
+        /************************************************************************************************************************/
+
+        /// <summary>Starts a transition from the current state to the specified state using normalized times.</summary>
+        /// <remarks>If `fadeDuration` is negative, it uses the <see cref="AnimancerGraph.DefaultFadeDuration"/>.</remarks>
+        public void CrossFade(
+            string stateName,
+            float fadeDuration = DefaultFadeDuration,
+            int layer = -1,
+            float normalizedTime = float.NegativeInfinity)
+            => Playable.CrossFade(stateName, GetFadeDuration(fadeDuration), layer, normalizedTime);
+
+        /************************************************************************************************************************/
+
+        /// <summary>Starts a transition from the current state to the specified state using times in seconds.</summary>
+        /// <remarks>If `fadeDuration` is negative, it uses the <see cref="AnimancerGraph.DefaultFadeDuration"/>.</remarks>
+        public void CrossFadeInFixedTime(
+            int stateNameHash,
+            float fadeDuration = DefaultFadeDuration,
+            int layer = -1,
+            float fixedTime = 0)
+            => Playable.CrossFadeInFixedTime(stateNameHash, GetFadeDuration(fadeDuration), layer, fixedTime);
+
+        /************************************************************************************************************************/
+
+        /// <summary>Starts a transition from the current state to the specified state using times in seconds.</summary>
+        /// <remarks>If `fadeDuration` is negative, it uses the <see cref="AnimancerGraph.DefaultFadeDuration"/>.</remarks>
+        public void CrossFadeInFixedTime(
+            string stateName,
+            float fadeDuration = DefaultFadeDuration,
+            int layer = -1,
+            float fixedTime = 0)
+            => Playable.CrossFadeInFixedTime(stateName, GetFadeDuration(fadeDuration), layer, fixedTime);
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Play
+        /************************************************************************************************************************/
+
+        /// <summary>Plays the specified state immediately, starting from a particular normalized time.</summary>
+        public void Play(
+            int stateNameHash,
+            int layer = -1,
+            float normalizedTime = float.NegativeInfinity)
+            => Playable.Play(stateNameHash, layer, normalizedTime);
+
+        /************************************************************************************************************************/
+
+        /// <summary>Plays the specified state immediately, starting from a particular normalized time.</summary>
+        public void Play(
+            string stateName,
+            int layer = -1,
+            float normalizedTime = float.NegativeInfinity)
+            => Playable.Play(stateName, layer, normalizedTime);
+
+        /************************************************************************************************************************/
+
+        /// <summary>Plays the specified state immediately, starting from a particular time (in seconds).</summary>
+        public void PlayInFixedTime(
+            int stateNameHash,
+            int layer = -1,
+            float fixedTime = 0)
+            => Playable.PlayInFixedTime(stateNameHash, layer, fixedTime);
+
+        /************************************************************************************************************************/
+
+        /// <summary>Plays the specified state immediately, starting from a particular time (in seconds).</summary>
+        public void PlayInFixedTime(
+            string stateName,
+            int layer = -1,
+            float fixedTime = 0)
+            => Playable.PlayInFixedTime(stateName, layer, fixedTime);
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Parameters
+        /************************************************************************************************************************/
+
+        /// <summary>Gets the value of the specified boolean parameter.</summary>
+        public bool GetBool(int id)
+            => Playable.GetBool(id);
+
+        /// <summary>Gets the value of the specified boolean parameter.</summary>
+        public bool GetBool(string name)
+            => Playable.GetBool(name);
+
+        /// <summary>Sets the value of the specified boolean parameter.</summary>
+        public void SetBool(int id, bool value)
+            => Playable.SetBool(id, value);
+
+        /// <summary>Sets the value of the specified boolean parameter.</summary>
+        public void SetBool(string name, bool value)
+            => Playable.SetBool(name, value);
+
+        /// <summary>Gets the value of the specified float parameter.</summary>
+        public float GetFloat(int id)
+            => Playable.GetFloat(id);
+
+        /// <summary>Gets the value of the specified float parameter.</summary>
+        public float GetFloat(string name)
+            => Playable.GetFloat(name);
+
+        /// <summary>Sets the value of the specified float parameter.</summary>
+        public void SetFloat(int id, float value)
+            => Playable.SetFloat(id, value);
+
+        /// <summary>Sets the value of the specified float parameter.</summary>
+        public void SetFloat(string name, float value)
+            => Playable.SetFloat(name, value);
+
+        /// <summary>Gets the value of the specified integer parameter.</summary>
+        public int GetInteger(int id)
+            => Playable.GetInteger(id);
+
+        /// <summary>Gets the value of the specified integer parameter.</summary>
+        public int GetInteger(string name)
+            => Playable.GetInteger(name);
+
+        /// <summary>Sets the value of the specified integer parameter.</summary>
+        public void SetInteger(int id, int value)
+            => Playable.SetInteger(id, value);
+
+        /// <summary>Sets the value of the specified integer parameter.</summary>
+        public void SetInteger(string name, int value)
+            => Playable.SetInteger(name, value);
+
+        /// <summary>Sets the specified trigger parameter to true.</summary>
+        public void SetTrigger(int id)
+            => Playable.SetTrigger(id);
+        /// <summary>Sets the specified trigger parameter to true.</summary>
+        /// 
+        public void SetTrigger(string name)
+            => Playable.SetTrigger(name);
+        /// <summary>Resets the specified trigger parameter to false.</summary>
+        /// 
+        public void ResetTrigger(int id)
+            => Playable.ResetTrigger(id);
+        /// <summary>Resets the specified trigger parameter to false.</summary>
+        /// 
+        public void ResetTrigger(string name)
+            => Playable.ResetTrigger(name);
+
+        /// <summary>Indicates whether the specified parameter is controlled by an <see cref="AnimationClip"/>.</summary>
+        public bool IsParameterControlledByCurve(int id)
+            => Playable.IsParameterControlledByCurve(id);
+
+        /// <summary>Indicates whether the specified parameter is controlled by an <see cref="AnimationClip"/>.</summary>
+        public bool IsParameterControlledByCurve(string name)
+            => Playable.IsParameterControlledByCurve(name);
+
+        /// <summary>Gets the details of one of the <see cref="Controller"/>'s parameters.</summary>
+        public AnimatorControllerParameter GetParameter(int index)
+            => Playable.GetParameter(index);
+
+        /// <summary>Gets the number of parameters in the <see cref="Controller"/>.</summary>
+        public int GetParameterCount()
+            => Playable.GetParameterCount();
+
+        /************************************************************************************************************************/
+
+        /// <summary>The number of parameters in the <see cref="Controller"/>.</summary>
+        public int parameterCount => Playable.GetParameterCount();
+
+        /************************************************************************************************************************/
+
+        private AnimatorControllerParameter[] _Parameters;
+
+        /// <summary>The parameters in the <see cref="Controller"/>.</summary>
+        /// <remarks>
+        /// This property allocates a new array when first accessed. To avoid that, you can use
+        /// <see cref="GetParameterCount"/> and <see cref="GetParameter"/> instead.
+        /// </remarks>
+        public AnimatorControllerParameter[] parameters
+        {
+            get
+            {
+                if (_Parameters == null)
+                {
+                    var count = GetParameterCount();
+                    _Parameters = new AnimatorControllerParameter[count];
+                    for (int i = 0; i < count; i++)
+                        _Parameters[i] = GetParameter(i);
+                }
+
+                return _Parameters;
+            }
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Smoothed Set Float
+        /************************************************************************************************************************/
+
+        private Dictionary<int, float> _SmoothingVelocities;
+
+        /************************************************************************************************************************/
+
+        /// <summary>Sets the value of the specified float parameter with smoothing.</summary>
+        /// <remarks>Consider using a <see cref="SmoothedFloatParameter"/> instead.</remarks>
+        public float SetFloat(
+            string name,
+            float value,
+            float dampTime,
+            float deltaTime,
+            float maxSpeed = float.PositiveInfinity)
+            => SetFloat(Animator.StringToHash(name), value, dampTime, deltaTime, maxSpeed);
+
+        /// <summary>Sets the value of the specified float parameter with smoothing.</summary>
+        /// <remarks>Consider using a <see cref="SmoothedFloatParameter"/> instead.</remarks>
+        public float SetFloat(
+            int id,
+            float value,
+            float dampTime,
+            float deltaTime,
+            float maxSpeed = float.PositiveInfinity)
+        {
+            _SmoothingVelocities ??= new();
+
+            _SmoothingVelocities.TryGetValue(id, out var velocity);
+
+            value = Mathf.SmoothDamp(GetFloat(id), value, ref velocity, dampTime, maxSpeed, deltaTime);
+            SetFloat(id, value);
+
+            _SmoothingVelocities[id] = velocity;
+
+            return value;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Copies the smoothing velocities.</summary>
+        private void CopySmoothingVelocitiesFrom(ControllerState copyFrom)
+        {
+            if (copyFrom._SmoothingVelocities != null)
+            {
+                if (_SmoothingVelocities == null)
+                    _SmoothingVelocities = new();
+                else
+                    _SmoothingVelocities.Clear();
+
+                foreach (var item in copyFrom._SmoothingVelocities)
+                    _SmoothingVelocities[item.Key] = item.Value;
+            }
+            else
+            {
+                _SmoothingVelocities?.Clear();
+            }
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Misc
+        /************************************************************************************************************************/
+        // Layers.
+        /************************************************************************************************************************/
+
+        /// <summary>Gets the weight of the layer at the specified index.</summary>
+        public float GetLayerWeight(int layerIndex)
+            => Playable.GetLayerWeight(layerIndex);
+        /// <summary>Sets the weight of the layer at the specified index.</summary>
+        public void SetLayerWeight(int layerIndex, float weight)
+            => Playable.SetLayerWeight(layerIndex, weight);
+
+        /// <summary>Gets the number of layers in the <see cref="Controller"/>.</summary>
+        public int GetLayerCount()
+            => Playable.GetLayerCount();
+        /// <summary>The number of layers in the <see cref="Controller"/>.</summary>
+        public int layerCount
+            => Playable.GetLayerCount();
+
+        /// <summary>Gets the index of the layer with the specified name.</summary>
+        public int GetLayerIndex(string layerName)
+            => Playable.GetLayerIndex(layerName);
+        /// <summary>Gets the name of the layer with the specified index.</summary>
+        public string GetLayerName(int layerIndex)
+            => Playable.GetLayerName(layerIndex);
+
+        /************************************************************************************************************************/
+        // States.
+        /************************************************************************************************************************/
+
+        /// <summary>Returns information about the current state.</summary>
+        public AnimatorStateInfo GetCurrentAnimatorStateInfo(int layerIndex = 0)
+            => Playable.GetCurrentAnimatorStateInfo(layerIndex);
+        /// <summary>Returns information about the next state being transitioned towards.</summary>
+        public AnimatorStateInfo GetNextAnimatorStateInfo(int layerIndex = 0)
+            => Playable.GetNextAnimatorStateInfo(layerIndex);
+
+        /// <summary>Indicates whether the specified layer contains the specified state.</summary>
+        public bool HasState(int layerIndex, int stateID)
+            => Playable.HasState(layerIndex, stateID);
+
+        /************************************************************************************************************************/
+        // Transitions.
+        /************************************************************************************************************************/
+
+        /// <summary>Indicates whether the specified layer is currently executing a transition.</summary>
+        public bool IsInTransition(int layerIndex = 0)
+            => Playable.IsInTransition(layerIndex);
+
+        /// <summary>Gets information about the current transition.</summary>
+        public AnimatorTransitionInfo GetAnimatorTransitionInfo(int layerIndex = 0)
+            => Playable.GetAnimatorTransitionInfo(layerIndex);
+
+        /************************************************************************************************************************/
+        // Clips.
+        /************************************************************************************************************************/
+
+        /// <summary>Gets information about the <see cref="AnimationClip"/>s currently being played.</summary>
+        public AnimatorClipInfo[] GetCurrentAnimatorClipInfo(int layerIndex = 0)
+            => Playable.GetCurrentAnimatorClipInfo(layerIndex);
+
+        /// <summary>Gets information about the <see cref="AnimationClip"/>s currently being played.</summary>
+        public void GetCurrentAnimatorClipInfo(int layerIndex, List<AnimatorClipInfo> clips)
+            => Playable.GetCurrentAnimatorClipInfo(layerIndex, clips);
+        /// <summary>Gets the number of <see cref="AnimationClip"/>s currently being played.</summary>
+        /// 
+        public int GetCurrentAnimatorClipInfoCount(int layerIndex = 0)
+            => Playable.GetCurrentAnimatorClipInfoCount(layerIndex);
+
+        /// <summary>Gets information about the <see cref="AnimationClip"/>s currently being transitioned towards.</summary>
+        public AnimatorClipInfo[] GetNextAnimatorClipInfo(int layerIndex = 0)
+            => Playable.GetNextAnimatorClipInfo(layerIndex);
+
+        /// <summary>Gets information about the <see cref="AnimationClip"/>s currently being transitioned towards.</summary>
+        public void GetNextAnimatorClipInfo(int layerIndex, List<AnimatorClipInfo> clips)
+            => Playable.GetNextAnimatorClipInfo(layerIndex, clips);
+
+        /// <summary>Gets the number of <see cref="AnimationClip"/>s currently being transitioned towards.</summary>
+        public int GetNextAnimatorClipInfoCount(int layerIndex = 0)
+            => Playable.GetNextAnimatorClipInfoCount(layerIndex);
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Controller States/ControllerState.cs.meta

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Packages/com.kybernetik.animancer/Runtime/Core.meta

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Packages/com.kybernetik.animancer/Runtime/Core/AnimancerGraph.cs.meta

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Packages/com.kybernetik.animancer/Runtime/Core/AnimancerLayerList.cs

@@ -0,0 +1,305 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Playables;
+
+namespace Animancer
+{
+    /// <summary>A list of <see cref="AnimancerLayer"/>s with methods to control their mixing and masking.</summary>
+    /// <remarks>
+    /// The default implementation of this class is <see cref="AnimancerLayerMixerList"/>.
+    /// <para></para>
+    /// <strong>Documentation:</strong>
+    /// <see href="https://kybernetik.com.au/animancer/docs/manual/blending/layers">
+    /// Layers</see>
+    /// </remarks>
+    /// https://kybernetik.com.au/animancer/api/Animancer/AnimancerLayerList
+    public abstract class AnimancerLayerList :
+        IEnumerable<AnimancerLayer>,
+        IAnimationClipCollection
+    {
+        /************************************************************************************************************************/
+        #region Fields
+        /************************************************************************************************************************/
+
+        /// <summary>The <see cref="AnimancerGraph"/> containing this list.</summary>
+        public readonly AnimancerGraph Graph;
+
+        /// <summary>The layers which each manage their own set of animations.</summary>
+        /// <remarks>This field should never be null so it shouldn't need null-checking.</remarks>
+        private AnimancerLayer[] _Layers;
+
+        /// <summary>The number of layers that have actually been created.</summary>
+        private int _Count;
+
+        /// <summary>The <see cref="UnityEngine.Playables.Playable"/> which blends the layers.</summary>
+        public Playable Playable { get; protected set; }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Creates a new <see cref="AnimancerLayerList"/>.</summary>
+        /// <remarks>The <see cref="Playable"/> must be assigned by the end of the derived constructor.</remarks>
+        protected AnimancerLayerList(AnimancerGraph graph, int capacity)
+        {
+            Graph = graph;
+            _Layers = new AnimancerLayer[capacity];
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region List Operations
+        /************************************************************************************************************************/
+
+        /// <summary>[Pro-Only] The number of layers in this list.</summary>
+        /// <exception cref="ArgumentOutOfRangeException">
+        /// The value is set higher than the <see cref="DefaultCapacity"/>. This is simply a safety measure,
+        /// so if you do actually need more layers you can just increase the limit.
+        /// </exception>
+        /// <exception cref="IndexOutOfRangeException">The value is set to a negative number.</exception>
+        public int Count
+        {
+            get => _Count;
+            set
+            {
+                var count = _Count;
+
+                if (value == count)
+                    return;
+
+                CheckAgain:
+
+                if (value > count)// Increasing.
+                {
+                    Add();
+                    count++;
+                    goto CheckAgain;
+                }
+                else// Decreasing.
+                {
+                    while (value < count--)
+                    {
+                        var layer = _Layers[count];
+                        if (layer._Playable.IsValid())
+                            Graph._PlayableGraph.DestroySubgraph(layer._Playable);
+                        layer.DestroyStates();
+                    }
+
+                    Array.Clear(_Layers, value, _Count - value);
+
+                    _Count = value;
+
+                    Playable.SetInputCount(value);
+                }
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Pro-Only]
+        /// If the <see cref="Count"/> is below the specified `min`, this method increases it to that value.
+        /// </summary>
+        public void SetMinCount(int min)
+        {
+            if (Count < min)
+                Count = min;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Pro-Only]
+        /// The maximum number of layers that can be created before an <see cref="ArgumentOutOfRangeException"/> will
+        /// be thrown (default 4).
+        /// <para></para>
+        /// Lowering this value will not affect layers that have already been created.
+        /// </summary>
+        /// <remarks>
+        /// <strong>Example:</strong>
+        /// To set this value automatically when the application starts, place a method like this in any class:
+        /// <para></para><code>
+        /// [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.BeforeSceneLoad)]
+        /// private static void SetMaxLayerCount()
+        /// {
+        ///     Animancer.AnimancerLayerList.DefaultCapacity = 8;
+        /// }
+        /// </code>
+        /// Otherwise you can set the <see cref="Capacity"/> of each individual list:
+        /// <para></para><code>
+        /// AnimancerComponent animancer;
+        /// animancer.Layers.Capacity = 8;
+        /// </code></remarks>
+        public static int DefaultCapacity { get; set; } = 4;
+
+        /// <summary>[Pro-Only]
+        /// If the <see cref="DefaultCapacity"/> is below the specified `min`, this method increases it to that value.
+        /// </summary>
+        public static void SetMinDefaultCapacity(int min)
+        {
+            if (DefaultCapacity < min)
+                DefaultCapacity = min;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Pro-Only]
+        /// The maximum number of layers that can be created before an <see cref="ArgumentOutOfRangeException"/> will
+        /// be thrown. The initial capacity is determined by <see cref="DefaultCapacity"/>.
+        /// </summary>
+        /// 
+        /// <remarks>
+        /// Lowering this value will destroy any layers beyond the specified value.
+        /// <para></para>
+        /// Changing this value will cause the allocation of a new array and garbage collection of the old one,
+        /// so you should generally set the <see cref="DefaultCapacity"/> before initializing this list.
+        /// </remarks>
+        /// 
+        /// <exception cref="ArgumentOutOfRangeException">The value is not greater than 0.</exception>
+        public int Capacity
+        {
+            get => _Layers.Length;
+            set
+            {
+                if (value <= 0)
+                    throw new ArgumentOutOfRangeException(nameof(Capacity), $"must be greater than 0 ({value} <= 0)");
+
+                if (_Count > value)
+                    Count = value;
+
+                Array.Resize(ref _Layers, value);
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Pro-Only] Creates and returns a new <see cref="AnimancerLayer"/> at the end of this list.</summary>
+        /// <remarks>If the <see cref="Capacity"/> would be exceeded, it will be doubled.</remarks>
+        public virtual AnimancerLayer Add()
+        {
+            var index = _Count;
+
+            if (index >= _Layers.Length)
+                Capacity *= 2;
+
+            var layer = new AnimancerLayer(Graph, index);
+
+            _Count = index + 1;
+            Playable.SetInputCount(_Count);
+            Graph._PlayableGraph.Connect(Playable, layer._Playable, index, 0);
+
+            _Layers[index] = layer;
+            return layer;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Returns the layer at the specified index. If it didn't already exist, this method creates it.</summary>
+        /// <remarks>To only get an existing layer without creating new ones, use <see cref="GetLayer"/> instead.</remarks>
+        public AnimancerLayer this[int index]
+        {
+            get
+            {
+                SetMinCount(index + 1);
+                return _Layers[index];
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Returns the layer at the specified index.</summary>
+        /// <remarks>To create a new layer if the target doesn't exist, use <see cref="this[int]"/> instead.</remarks>
+        public AnimancerLayer GetLayer(int index)
+            => _Layers[index];
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Enumeration
+        /************************************************************************************************************************/
+
+        /// <summary>Returns an enumerator that will iterate through all layers.</summary>
+        public FastEnumerator<AnimancerLayer> GetEnumerator()
+            => new(_Layers, _Count);
+
+        /// <inheritdoc/>
+        IEnumerator<AnimancerLayer> IEnumerable<AnimancerLayer>.GetEnumerator()
+            => GetEnumerator();
+
+        /// <inheritdoc/>
+        IEnumerator IEnumerable.GetEnumerator()
+            => GetEnumerator();
+
+        /************************************************************************************************************************/
+
+        /// <summary>[<see cref="IAnimationClipCollection"/>] Gathers all the animations in all layers.</summary>
+        public void GatherAnimationClips(ICollection<AnimationClip> clips)
+            => clips.GatherFromSource(_Layers);
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Layer Details
+        /************************************************************************************************************************/
+
+        /// <summary>[Pro-Only]
+        /// Is the layer at the specified index is set to additive blending?
+        /// Otherwise it will override lower layers.
+        /// </summary>
+        public virtual bool IsAdditive(int index)
+            => false;
+
+        /// <summary>[Pro-Only]
+        /// Sets the layer at the specified index to blend additively with earlier layers (if true)
+        /// or to override them (if false). Newly created layers will override by default.
+        /// </summary>
+        public virtual void SetAdditive(int index, bool value) { }
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Pro-Only]
+        /// Sets an <see cref="AvatarMask"/> to determine which bones the layer at the specified index will affect.
+        /// </summary>
+        /// <remarks>
+        /// Don't assign the same mask repeatedly unless you have modified it.
+        /// This property doesn't check if the mask is the same
+        /// so repeatedly assigning the same thing will simply waste performance.
+        /// </remarks>
+        public virtual void SetMask(int index, AvatarMask mask) { }
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Editor-Conditional] Sets the Inspector display name of the layer at the specified index.</summary>
+        [System.Diagnostics.Conditional(Strings.UnityEditor)]
+        public void SetDebugName(int index, string name)
+            => this[index].SetDebugName(name);
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// The average velocity of the root motion of all currently playing animations,
+        /// taking their current <see cref="AnimancerNode.Weight"/> into account.
+        /// </summary>
+        public Vector3 AverageVelocity
+        {
+            get
+            {
+                var velocity = default(Vector3);
+
+                for (int i = 0; i < _Count; i++)
+                {
+                    var layer = _Layers[i];
+                    velocity += layer.AverageVelocity * layer.Weight;
+                }
+
+                return velocity;
+            }
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/AnimancerLayerList.cs.meta

@@ -0,0 +1,13 @@
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Packages/com.kybernetik.animancer/Runtime/Core/AnimancerLayerMixerList.cs

@@ -0,0 +1,75 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using UnityEngine;
+using UnityEngine.Animations;
+
+namespace Animancer
+{
+    /// <summary>An <see cref="AnimancerLayerList"/> which uses an <see cref="AnimationLayerMixerPlayable"/>.</summary>
+    /// <remarks>
+    /// <strong>Documentation:</strong>
+    /// <see href="https://kybernetik.com.au/animancer/docs/manual/blending/layers">
+    /// Layers</see>
+    /// </remarks>
+    /// https://kybernetik.com.au/animancer/api/Animancer/AnimancerLayerMixerList
+    public class AnimancerLayerMixerList : AnimancerLayerList
+    {
+        /************************************************************************************************************************/
+
+        /// <summary>Creates a new <see cref="AnimancerLayerMixerList"/>.</summary>
+        public AnimancerLayerMixerList(AnimancerGraph graph)
+            : base(graph, DefaultCapacity)
+        {
+            LayerMixer = AnimationLayerMixerPlayable.Create(graph._PlayableGraph, 1);
+            Playable = LayerMixer;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>The <see cref="AnimationLayerMixerPlayable"/> which blends the layers.</summary>
+        public AnimationLayerMixerPlayable LayerMixer { get; protected set; }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override bool IsAdditive(int index)
+            => LayerMixer.IsLayerAdditive((uint)index);
+
+        /// <inheritdoc/>
+        public override void SetAdditive(int index, bool value)
+        {
+            SetMinCount(index + 1);
+            LayerMixer.SetLayerAdditive((uint)index, value);
+        }
+
+        /************************************************************************************************************************/
+
+        private static AvatarMask _DefaultMask;
+
+        /// <inheritdoc/>
+        public override void SetMask(int index, AvatarMask mask)
+        {
+            var layer = this[index];
+
+            if (mask == null)
+            {
+                // If the existing mask was already null, do nothing.
+                // If it was destroyed, we still need to continue and set it to the default.
+                if (layer._Mask is null)
+                    return;
+
+                _DefaultMask ??= new();
+
+                mask = _DefaultMask;
+            }
+
+            // Don't check if the same mask was already assigned because it might have been modified.
+            layer._Mask = mask;
+
+            LayerMixer.SetLayerMaskFromAvatarMask((uint)index, mask);
+        }
+
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/AnimancerLayerMixerList.cs.meta

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Packages/com.kybernetik.animancer/Runtime/Core/AnimancerStateDictionary.cs

@@ -0,0 +1,537 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Text;
+using UnityEngine;
+
+namespace Animancer
+{
+    /// <summary>A dictionary of <see cref="AnimancerState"/>s mapped to their <see cref="AnimancerState.Key"/>.</summary>
+    /// <remarks>
+    /// <strong>Documentation:</strong>
+    /// <see href="https://kybernetik.com.au/animancer/docs/manual/playing/states">
+    /// States</see>
+    /// </remarks>
+    /// https://kybernetik.com.au/animancer/api/Animancer/AnimancerStateDictionary
+    public class AnimancerStateDictionary :
+        IAnimationClipCollection,
+        IEnumerable<AnimancerState>
+    {
+        /************************************************************************************************************************/
+
+        /// <summary>The <see cref="AnimancerGraph"/> at the root of the graph.</summary>
+        private readonly AnimancerGraph Graph;
+
+        /************************************************************************************************************************/
+
+        /// <summary><see cref="AnimancerState.Key"/> mapped to <see cref="AnimancerState"/>.</summary>
+        private readonly Dictionary<object, AnimancerState>
+            States = new();
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Internal] Creates a new <see cref="AnimancerStateDictionary"/>.</summary>
+        internal AnimancerStateDictionary(AnimancerGraph graph)
+            => Graph = graph;
+
+        /************************************************************************************************************************/
+
+        /// <summary>The number of states that have been registered with a <see cref="AnimancerState.Key"/>.</summary>
+        public int Count
+            => States.Count;
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public void AppendDescriptionOrOrphans(
+            StringBuilder text,
+            string separator = "\n")
+        {
+            string stateSeparator = null;
+
+            foreach (var state in States.Values)
+            {
+                if (state.Parent != null)
+                    continue;
+
+                if (stateSeparator is null)
+                {
+                    text.Append(separator)
+                        .Append("Orphan States:");
+
+                    separator += Strings.Indent;
+                    stateSeparator = separator + Strings.Indent;
+                }
+
+                text.Append(separator);
+                state.AppendDescription(text, stateSeparator);
+            }
+        }
+
+        /************************************************************************************************************************/
+        #region Create
+        /************************************************************************************************************************/
+
+        /// <summary>Creates and returns a new <see cref="ClipState"/> to play the `clip`.</summary>
+        /// <remarks>
+        /// To create a state on a specific layer, use <c>animancer.Layers[x].CreateState(clip)</c> instead.
+        /// <para></para>
+        /// <see cref="AnimancerGraph.GetKey"/> is used to determine the <see cref="AnimancerState.Key"/>.
+        /// </remarks>
+        public ClipState Create(AnimationClip clip)
+            => Create(Graph.GetKey(clip), clip);
+
+        /// <summary>
+        /// Creates and returns a new <see cref="ClipState"/> to play the `clip` and registers it with the `key`.
+        /// </summary>
+        /// <remarks>
+        /// To create a state on a specific layer, use <c>animancer.Layers[x].CreateState(key, clip)</c> instead.
+        /// </remarks>
+        public ClipState Create(object key, AnimationClip clip)
+        {
+            var state = new ClipState(clip);
+            state.SetGraph(Graph);
+            state._Key = key;
+            Register(state);
+            return state;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Calls <see cref="GetOrCreate(AnimationClip, bool)"/> for each of the specified clips.</summary>
+        public void CreateIfNew(AnimationClip clip0, AnimationClip clip1)
+        {
+            GetOrCreate(clip0);
+            GetOrCreate(clip1);
+        }
+
+        /// <summary>Calls <see cref="GetOrCreate(AnimationClip, bool)"/> for each of the specified clips.</summary>
+        public void CreateIfNew(AnimationClip clip0, AnimationClip clip1, AnimationClip clip2)
+        {
+            GetOrCreate(clip0);
+            GetOrCreate(clip1);
+            GetOrCreate(clip2);
+        }
+
+        /// <summary>Calls <see cref="GetOrCreate(AnimationClip, bool)"/> for each of the specified clips.</summary>
+        public void CreateIfNew(AnimationClip clip0, AnimationClip clip1, AnimationClip clip2, AnimationClip clip3)
+        {
+            GetOrCreate(clip0);
+            GetOrCreate(clip1);
+            GetOrCreate(clip2);
+            GetOrCreate(clip3);
+        }
+
+        /// <summary>Calls <see cref="GetOrCreate(AnimationClip, bool)"/> for each of the specified `clips`.</summary>
+        public void CreateIfNew(params AnimationClip[] clips)
+        {
+            if (clips == null)
+                return;
+
+            var count = clips.Length;
+            for (int i = 0; i < count; i++)
+            {
+                var clip = clips[i];
+                if (clip != null)
+                    GetOrCreate(clip);
+            }
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Access
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// The <see cref="AnimancerLayer.CurrentState"/> on layer 0.
+        /// <para></para>
+        /// Specifically, this is the state that was most recently started using any of the Play methods on that layer.
+        /// States controlled individually via methods in the <see cref="AnimancerState"/> itself will not register in
+        /// this property.
+        /// </summary>
+        public AnimancerState Current
+            => Graph.Layers[0].CurrentState;
+
+        /************************************************************************************************************************/
+
+        /// <summary>Calls <see cref="AnimancerGraph.GetKey"/> then returns the state registered with that key.</summary>
+        /// <exception cref="ArgumentNullException">The key is null.</exception>
+        /// <exception cref="KeyNotFoundException">No state is registered with the key.</exception>
+        public AnimancerState this[AnimationClip clip]
+            => States[Graph.GetKey(clip)];
+
+        /// <summary>Returns the state registered with the <see cref="IHasKey.Key"/>.</summary>
+        /// <exception cref="ArgumentNullException">The `key` is null.</exception>
+        /// <exception cref="KeyNotFoundException">No state is registered with the `key`.</exception>
+        public AnimancerState this[IHasKey hasKey]
+            => States[hasKey.Key];
+
+        /// <summary>Returns the state registered with the `key`.</summary>
+        /// <exception cref="ArgumentNullException">The `key` is null.</exception>
+        /// <exception cref="KeyNotFoundException">No state is registered with the `key`.</exception>
+        public AnimancerState this[object key]
+            => States[key];
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Calls <see cref="AnimancerGraph.GetKey"/> then passes the key to
+        /// <see cref="TryGet(object, out AnimancerState)"/> and returns the result.
+        /// </summary>
+        public bool TryGet(AnimationClip clip, out AnimancerState state)
+        {
+            if (clip == null)
+            {
+                state = null;
+                return false;
+            }
+
+            return TryGet(Graph.GetKey(clip), out state);
+        }
+
+        /// <summary>
+        /// Passes the <see cref="IHasKey.Key"/> into <see cref="TryGet(object, out AnimancerState)"/>
+        /// and returns the result.
+        /// </summary>
+        public bool TryGet(IHasKey hasKey, out AnimancerState state)
+            => TryGet(hasKey?.Key, out state);
+
+        /// <summary>
+        /// If a `state` is registered with the `key`, this method outputs it and returns true.
+        /// Otherwise the `state` is set to null and this method returns false.
+        /// </summary>
+        public bool TryGet(object key, out AnimancerState state)
+        {
+            if (key == null)
+            {
+                state = null;
+                return false;
+            }
+
+            return States.TryGetValue(key, out state);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Passes the <see cref="IHasKey.Key"/> into <see cref="TryGetAlias(object, out AnimancerState)"/>
+        /// and returns the result.
+        /// </summary>
+        public bool TryGetAlias(IHasKey hasKey, out AnimancerState state)
+            => TryGetAlias(hasKey?.Key, out state);
+
+        /// <summary>
+        /// If a `state` is registered with the `key` or the <see cref="TransitionLibraries.TransitionLibrary"/>,
+        /// is using it as an alias, this method outputs it and returns true.
+        /// Otherwise the `state` is set to null and this method returns false.
+        /// </summary>
+        public bool TryGetAlias(object key, out AnimancerState state)
+        {
+            if (key == null)
+            {
+                state = null;
+                return false;
+            }
+
+            if (Graph.Transitions != null &&
+                Graph.Transitions.TryGetTransition(key, out var group))
+                key = group.Transition.Key;
+
+            return States.TryGetValue(key, out state);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Calls <see cref="AnimancerGraph.GetKey"/> and returns the state registered with that key
+        /// or creates one if it doesn't exist.
+        /// </summary>
+        /// <remarks>
+        /// If the state already exists but has the wrong <see cref="AnimancerState.Clip"/>, the `allowSetClip`
+        /// parameter determines what will happen. False causes it to throw an <see cref="ArgumentException"/> while
+        /// true allows it to change the <see cref="AnimancerState.Clip"/>. Note that the change is somewhat costly to
+        /// performance so use with caution.
+        /// </remarks>
+        /// <exception cref="ArgumentException"/>
+        public AnimancerState GetOrCreate(AnimationClip clip, bool allowSetClip = false)
+            => GetOrCreate(Graph.GetKey(clip), clip, allowSetClip);
+
+        /// <summary>
+        /// Returns the state registered with the `transition`s <see cref="IHasKey.Key"/> if there is one.
+        /// Otherwise this method uses <see cref="ITransition.CreateState"/> to create a new one
+        /// and registers it with that key before returning it.
+        /// </summary>
+        public AnimancerState GetOrCreate(ITransition transition)
+        {
+            var key = transition.Key;
+            if (!TryGet(key, out var state))
+            {
+                state = transition.CreateState();
+                state._Key = key;
+                state.SetGraph(Graph);
+            }
+
+            return state;
+        }
+
+        /// <summary>
+        /// Returns the state which registered with the `key` or creates one if it doesn't exist.
+        /// <para></para>
+        /// If the state already exists but has the wrong <see cref="AnimancerState.Clip"/>, the `allowSetClip`
+        /// parameter determines what will happen. False causes it to throw an <see cref="ArgumentException"/>
+        /// while true allows it to change the <see cref="AnimancerState.Clip"/>.
+        /// Note that the change is somewhat costly to performance so use with caution.
+        /// </summary>
+        /// <exception cref="ArgumentException"/>
+        /// <remarks>See also: <see cref="AnimancerLayer.GetOrCreateState(object, AnimationClip, bool)"/></remarks>
+        public AnimancerState GetOrCreate(object key, AnimationClip clip, bool allowSetClip = false)
+        {
+            if (TryGet(key, out var state))
+            {
+                // If a state exists with the 'key' but has the wrong clip, either change it or complain.
+                if (!ReferenceEquals(state.Clip, clip))
+                {
+                    if (allowSetClip)
+                    {
+                        state.Clip = clip;
+                    }
+                    else
+                    {
+                        throw new ArgumentException(GetClipMismatchError(key, state.Clip, clip));
+                    }
+                }
+            }
+            else
+            {
+                state = Create(key, clip);
+            }
+
+            return state;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Returns an error message explaining that a state already exists with the specified `key`.</summary>
+        public static string GetClipMismatchError(object key, AnimationClip oldClip, AnimationClip newClip)
+            => $"A state already exists using the specified '{nameof(key)}', but has a different {nameof(AnimationClip)}:" +
+            $"\n• Key: {key}" +
+            $"\n• Old Clip: {oldClip}" +
+            $"\n• New Clip: {newClip}";
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Internal]
+        /// Registers the `state` in this dictionary so the <see cref="AnimancerState.Key"/> can be used to get it
+        /// later on using any of the lookup methods such as <see cref="this[object]"/> or
+        /// <see cref="TryGet(object, out AnimancerState)"/>.
+        /// </summary>
+        /// <remarks>Does nothing if the <see cref="AnimancerState.Key"/> is <c>null</c>.</remarks>
+        internal void Register(AnimancerState state)
+        {
+            var key = state._Key;
+            if (key != null)
+            {
+#if UNITY_ASSERTIONS
+                if (state.Graph != Graph)
+                    throw new ArgumentException(
+                        $"{nameof(AnimancerStateDictionary)} cannot register a state with a different {nameof(Graph)}: " + state);
+#endif
+
+                States.Add(key, state);
+            }
+        }
+
+        /// <summary>[Internal] Removes the `state` from this dictionary (the opposite of <see cref="Register"/>).</summary>
+        internal void Unregister(AnimancerState state)
+        {
+            var key = state._Key;
+            if (key != null)
+                States.Remove(key);
+        }
+
+        /************************************************************************************************************************/
+        #region Enumeration
+        /************************************************************************************************************************/
+        // IEnumerable for 'foreach' statements.
+        /************************************************************************************************************************/
+
+        /// <summary>Returns an enumerator that will iterate through all registered states.</summary>
+        public Dictionary<object, AnimancerState>.ValueCollection.Enumerator GetEnumerator()
+            => States.Values.GetEnumerator();
+
+        /// <inheritdoc/>
+        IEnumerator<AnimancerState> IEnumerable<AnimancerState>.GetEnumerator()
+            => GetEnumerator();
+
+        /// <inheritdoc/>
+        IEnumerator IEnumerable.GetEnumerator()
+            => GetEnumerator();
+
+        /************************************************************************************************************************/
+
+        /// <summary>[<see cref="IAnimationClipCollection"/>]
+        /// Adds all the animations of states with a <see cref="AnimancerState.Key"/> to the `clips`.
+        /// </summary>
+        public void GatherAnimationClips(ICollection<AnimationClip> clips)
+        {
+            foreach (var state in States.Values)
+                clips.GatherFromSource(state);
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Destroy
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Calls <see cref="AnimancerState.Destroy"/> on the state associated with the `clip` (if any).
+        /// Returns true if the state existed.
+        /// </summary>
+        public bool Destroy(AnimationClip clip)
+        {
+            if (clip == null)
+                return false;
+
+            return Destroy(Graph.GetKey(clip));
+        }
+
+        /// <summary>
+        /// Calls <see cref="AnimancerState.Destroy"/> on the state associated with the <see cref="IHasKey.Key"/>
+        /// (if any). Returns true if the state existed.
+        /// </summary>
+        public bool Destroy(IHasKey hasKey)
+        {
+            if (hasKey == null)
+                return false;
+
+            return Destroy(hasKey.Key);
+        }
+
+        /// <summary>
+        /// Calls <see cref="AnimancerState.Destroy"/> on the state associated with the `key` (if any).
+        /// Returns true if the state existed.
+        /// </summary>
+        public bool Destroy(object key)
+        {
+            if (!TryGet(key, out var state))
+                return false;
+
+            state.Destroy();
+            return true;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Calls <see cref="Destroy(AnimationClip)"/> on each of the `clips`.</summary>
+        public void DestroyAll(IList<AnimationClip> clips)
+        {
+            if (clips == null)
+                return;
+
+            for (int i = clips.Count - 1; i >= 0; i--)
+                Destroy(clips[i]);
+        }
+
+        /// <summary>Calls <see cref="Destroy(AnimationClip)"/> on each of the `clips`.</summary>
+        public void DestroyAll(IEnumerable<AnimationClip> clips)
+        {
+            if (clips == null)
+                return;
+
+            foreach (var clip in clips)
+                Destroy(clip);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Calls <see cref="Destroy(AnimationClip)"/> on all states gathered by
+        /// <see cref="IAnimationClipSource.GetAnimationClips"/>.
+        /// </summary>
+        public void DestroyAll(IAnimationClipSource source)
+        {
+            if (source == null)
+                return;
+
+            var clips = ListPool.Acquire<AnimationClip>();
+            source.GetAnimationClips(clips);
+            DestroyAll(clips);
+            ListPool.Release(clips);
+        }
+
+        /// <summary>
+        /// Calls <see cref="Destroy(AnimationClip)"/> on all states gathered by
+        /// <see cref="IAnimationClipCollection.GatherAnimationClips"/>.
+        /// </summary>
+        public void DestroyAll(IAnimationClipCollection source)
+        {
+            if (source == null)
+                return;
+
+            var clips = SetPool.Acquire<AnimationClip>();
+            source.GatherAnimationClips(clips);
+            DestroyAll(clips);
+            SetPool.Release(clips);
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Key Error Methods
+#if UNITY_EDITOR
+        /************************************************************************************************************************/
+        // These are overloads of other methods that take a System.Object key to ensure the user doesn't try to use an
+        // AnimancerState as a key, since the whole point of a key is to identify a state in the first place.
+        /************************************************************************************************************************/
+
+        /// <summary>[Warning]
+        /// You should not use an <see cref="AnimancerState"/> as a key.
+        /// The whole point of a key is to identify a state in the first place.
+        /// </summary>
+        [Obsolete("You should not use an AnimancerState as a key. The whole point of a key is to identify a state in the first place.", true)]
+        public AnimancerState this[AnimancerState key]
+            => key;
+
+        /// <summary>[Warning]
+        /// You should not use an <see cref="AnimancerState"/> as a key.
+        /// The whole point of a key is to identify a state in the first place.
+        /// </summary>
+        [Obsolete("You should not use an AnimancerState as a key. The whole point of a key is to identify a state in the first place.", true)]
+        public bool TryGet(AnimancerState key, out AnimancerState state)
+        {
+            state = key;
+            return true;
+        }
+
+        /// <summary>[Warning]
+        /// You should not use an <see cref="AnimancerState"/> as a key.
+        /// The whole point of a key is to identify a state in the first place.
+        /// </summary>
+        [Obsolete("You should not use an AnimancerState as a key. The whole point of a key is to identify a state in the first place.", true)]
+        public AnimancerState GetOrCreate(AnimancerState key, AnimationClip clip)
+            => key;
+
+        /// <summary>[Warning]
+        /// You should not use an <see cref="AnimancerState"/> as a key.
+        /// Just call <see cref="AnimancerState.Destroy"/>.
+        /// </summary>
+        [Obsolete("You should not use an AnimancerState as a key. Just call AnimancerState.Destroy.", true)]
+        public bool Destroy(AnimancerState key)
+        {
+            key.Destroy();
+            return true;
+        }
+
+        /************************************************************************************************************************/
+#endif
+        #endregion
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/AnimancerStateDictionary.cs.meta

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Packages/com.kybernetik.animancer/Runtime/Core/Events/AnimancerEvent.Dispatcher.cs

@@ -0,0 +1,551 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System;
+using System.Runtime.CompilerServices;
+using System.Text;
+using UnityEngine;
+
+namespace Animancer
+{
+    /// https://kybernetik.com.au/animancer/api/Animancer/AnimancerEvent
+    partial struct AnimancerEvent
+    {
+        /// <summary>Details about a state which determine how it triggers events.</summary>
+        /// https://kybernetik.com.au/animancer/api/Animancer/DispatchInfo
+        public readonly struct DispatchInfo
+        {
+            /************************************************************************************************************************/
+
+            /// <summary><see cref="AnimancerState.Length"/></summary>
+            public readonly float Length;
+
+            /// <summary><see cref="AnimancerState.NormalizedTime"/></summary>
+            public readonly float NormalizedTime;
+
+            /// <summary><see cref="AnimancerState.IsLooping"/></summary>
+            public readonly bool IsLooping;
+
+            /************************************************************************************************************************/
+
+            /// <summary>Creates a new <see cref="DispatchInfo"/>.</summary>
+            public DispatchInfo(float length, float normalizedTime, bool isLooping)
+            {
+                Length = length;
+                NormalizedTime = normalizedTime;
+                IsLooping = isLooping;
+            }
+
+            /************************************************************************************************************************/
+        }
+
+        /// <summary>
+        /// A system which triggers events in an <see cref="Sequence"/>
+        /// based on a target <see cref="State"/>.
+        /// </summary>
+        /// https://kybernetik.com.au/animancer/api/Animancer/Dispatcher
+        public class Dispatcher : IHasDescription
+        {
+            /************************************************************************************************************************/
+
+            /// <summary>The target state.</summary>
+            public readonly AnimancerState State;
+
+            /// <summary>
+            /// <see cref="AnimancerState.OwnedEvents"/> and
+            /// <see cref="AnimancerState.SharedEvents"/>.
+            /// </summary>
+            /// <remarks>Should never be null.</remarks>
+            public Sequence Events { get; private set; }
+
+            /// <summary><see cref="AnimancerState.HasOwnedEvents"/></summary>
+            public bool HasOwnEvents { get; private set; }
+
+            private float _PreviousNormalizedTime;
+            private int _NextEventIndex = RecalculateEventIndex;
+            private int _SequenceVersion = -1;// When version changes, next event index is invalid.
+            private bool _WasPlayingForwards;// When direction changes, next event index is invalid.
+
+            /// <summary>
+            /// A special value for the <see cref="_NextEventIndex"/>
+            /// which indicates that it needs to be recalculated.
+            /// </summary>
+            private const int RecalculateEventIndex = int.MinValue;
+
+            /************************************************************************************************************************/
+
+            /// <summary>Creates a new <see cref="Dispatcher"/>.</summary>
+            public Dispatcher(AnimancerState state)
+            {
+
+                State = state;
+                _PreviousNormalizedTime = state.NormalizedTime;
+
+#if UNITY_ASSERTIONS
+                OptionalWarning.UnsupportedEvents.Log(state.UnsupportedEventsMessage, state.Graph?.Component);
+#endif
+            }
+
+            /************************************************************************************************************************/
+
+            /// <summary>
+            /// Setters for <see cref="AnimancerState.OwnedEvents"/>
+            /// and <see cref="AnimancerState.SharedEvents"/>.
+            /// </summary>
+            public void SetEvents(Sequence events, bool isOwned)
+            {
+                Events = events;
+                _NextEventIndex = RecalculateEventIndex;
+                _SequenceVersion = Events.Version;
+                HasOwnEvents = isOwned;
+            }
+
+            /************************************************************************************************************************/
+
+            /// <summary>Sets <see cref="HasOwnEvents"/> to <c>false</c>.</summary>
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            public void DismissEventOwnership()
+                => HasOwnEvents = false;
+
+            /************************************************************************************************************************/
+
+            /// <summary><see cref="AnimancerState.Events(object, out Sequence)"/>.</summary>
+            public bool InitializeEvents(out Sequence events)
+            {
+                if (HasOwnEvents)
+                {
+                    events = Events;
+                    return false;
+                }
+
+                Events = events = new(Events);
+                _NextEventIndex = RecalculateEventIndex;
+                _SequenceVersion = Events.Version;
+                HasOwnEvents = true;
+                return true;
+            }
+
+            /************************************************************************************************************************/
+
+            /// <summary>[Internal]
+            /// Notifies this dispatcher that the target's <see cref="Time"/> has changed.
+            /// </summary>
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            internal void OnSetTime()
+            {
+                // The Playable's time won't move in the same frame it was set,
+                // so we'll just let the next frame grab its time.
+                _PreviousNormalizedTime = float.NaN;
+            }
+
+            /************************************************************************************************************************/
+
+            /// <inheritdoc/>
+            public void UpdateEvents(bool raiseEvents)
+            {
+                var info = State.GetEventDispatchInfo();
+
+                // If we aren't raising events or don't have a previous time, just keep track of the time.
+                if (!raiseEvents || float.IsNaN(_PreviousNormalizedTime))
+                {
+                    _PreviousNormalizedTime = info.NormalizedTime;
+
+                    // Since we aren't paying attention to the events,
+                    // we also aren't paying attention to which index the time corresponds to.
+                    _NextEventIndex = RecalculateEventIndex;
+
+                    return;
+                }
+
+                // If the sequence is modified, we need to recalculate the next event index.
+                var sequenceVersion = Events.Version;
+                if (_SequenceVersion != sequenceVersion)
+                {
+                    _SequenceVersion = sequenceVersion;
+                    _NextEventIndex = RecalculateEventIndex;
+                }
+
+                if (info.Length > 0)
+                {
+                    if (_PreviousNormalizedTime == info.NormalizedTime)
+                        return;
+
+                    CheckGeneralEvents(info.NormalizedTime, info.IsLooping);
+
+                    CheckEndEvent(info.NormalizedTime);
+
+                    _PreviousNormalizedTime = info.NormalizedTime;
+                }
+                else// Length zero, negative, or NaN.
+                {
+                    UpdateZeroLength();
+                }
+            }
+
+            /************************************************************************************************************************/
+
+            /// <summary>If the state has zero length, trigger its events every frame.</summary>
+            private void UpdateZeroLength()
+            {
+                var speed = State.EffectiveSpeed;
+                if (speed == 0)
+                    return;
+
+                if (Events.Count > 0)
+                {
+                    int playDirectionInt;
+                    if (speed < 0)
+                    {
+                        playDirectionInt = -1;
+                        if (_NextEventIndex == RecalculateEventIndex ||
+                            _WasPlayingForwards)
+                        {
+                            _NextEventIndex = Events.Count - 1;
+                            _WasPlayingForwards = false;
+                        }
+                    }
+                    else
+                    {
+                        playDirectionInt = 1;
+                        if (_NextEventIndex == RecalculateEventIndex ||
+                            !_WasPlayingForwards)
+                        {
+                            _NextEventIndex = 0;
+                            _WasPlayingForwards = true;
+                        }
+                    }
+
+                    if (!InvokeAllEvents(Events, 1, playDirectionInt))
+                        return;
+                }
+
+                var endEvent = Events.EndEvent;
+                if (endEvent.callback != null)
+                    endEvent.DelayInvoke(EndEventName, State);
+            }
+
+            /************************************************************************************************************************/
+
+            /// <summary>General events are triggered on the frame when their time passes.</summary>
+            /// <remarks>Looping animations trigger their events every loop.</remarks>
+            private void CheckGeneralEvents(float normalizedTime, bool isLooping)
+            {
+                var count = Events.Count;
+                if (count == 0)
+                {
+                    _NextEventIndex = 0;
+                    return;
+                }
+
+                ValidateNextEventIndex(
+                    isLooping,
+                    ref normalizedTime,
+                    out var playDirectionFloat,
+                    out var playDirectionInt);
+
+                if (isLooping)// Looping.
+                {
+                    var animancerEvent = Events[_NextEventIndex];
+                    var eventTime = animancerEvent.normalizedTime * playDirectionFloat;
+
+                    var loopDelta = GetLoopDelta(_PreviousNormalizedTime, normalizedTime, eventTime);
+                    if (loopDelta == 0)
+                        return;
+
+                    // For each additional loop, invoke all events without needing to check their times.
+                    if (!InvokeAllEvents(Events, loopDelta - 1, playDirectionInt))
+                        return;
+
+                    var loopStartIndex = _NextEventIndex;
+
+                    Invoke:
+                    animancerEvent.DelayInvoke(Events.GetName(_NextEventIndex), State);
+
+                    if (!NextEventLooped(Events, playDirectionInt) ||
+                        _NextEventIndex == loopStartIndex)
+                        return;
+
+                    animancerEvent = Events[_NextEventIndex];
+                    eventTime = animancerEvent.normalizedTime * playDirectionFloat;
+                    if (loopDelta == GetLoopDelta(_PreviousNormalizedTime, normalizedTime, eventTime))
+                        goto Invoke;
+                }
+                else// Non-Looping.
+                {
+                    while ((uint)_NextEventIndex < (uint)count)
+                    {
+                        var animancerEvent = Events[_NextEventIndex];
+                        var eventTime = animancerEvent.normalizedTime * playDirectionFloat;
+
+                        if (normalizedTime <= eventTime)
+                            return;
+
+                        animancerEvent.DelayInvoke(Events.GetName(_NextEventIndex), State);
+
+                        _NextEventIndex += playDirectionInt;
+                    }
+                }
+            }
+
+            /************************************************************************************************************************/
+
+            private void ValidateNextEventIndex(
+                bool isLooping,
+                ref float normalizedTime,
+                out float playDirectionFloat,
+                out int playDirectionInt)
+            {
+                if (normalizedTime < _PreviousNormalizedTime)// Playing Backwards.
+                {
+                    var previousTime = _PreviousNormalizedTime;
+                    _PreviousNormalizedTime = -previousTime;
+                    normalizedTime = -normalizedTime;
+                    playDirectionFloat = -1;
+                    playDirectionInt = -1;
+
+                    if (_NextEventIndex == RecalculateEventIndex ||
+                        _WasPlayingForwards)
+                    {
+                        _NextEventIndex = Events.Count - 1;
+                        _WasPlayingForwards = false;
+
+                        if (isLooping)
+                            previousTime = AnimancerUtilities.Wrap01(previousTime);
+
+                        while (Events[_NextEventIndex].normalizedTime > previousTime)
+                        {
+                            _NextEventIndex--;
+
+                            if (_NextEventIndex < 0)
+                            {
+                                if (isLooping)
+                                    _NextEventIndex = Events.Count - 1;
+                                break;
+                            }
+                        }
+
+                        Events.AssertNormalizedTimes(State, isLooping);
+                    }
+                }
+                else// Playing Forwards.
+                {
+                    playDirectionFloat = 1;
+                    playDirectionInt = 1;
+
+                    if (_NextEventIndex == RecalculateEventIndex ||
+                        !_WasPlayingForwards)
+                    {
+                        _NextEventIndex = 0;
+                        _WasPlayingForwards = true;
+
+                        var previousTime = _PreviousNormalizedTime;
+                        if (isLooping)
+                            previousTime = AnimancerUtilities.Wrap01(previousTime);
+
+                        var max = Events.Count - 1;
+                        while (Events[_NextEventIndex].normalizedTime < previousTime)
+                        {
+                            _NextEventIndex++;
+
+                            if (_NextEventIndex > max)
+                            {
+                                if (isLooping)
+                                    _NextEventIndex = 0;
+                                break;
+                            }
+                        }
+
+                        Events.AssertNormalizedTimes(State, isLooping);
+                    }
+                }
+
+                // This method could be slightly optimised for playback direction changes by using the current index
+                // as the starting point instead of iterating from the edge of the sequence, but that would make it
+                // significantly more complex for something that shouldn't happen very often and would only matter if
+                // there are lots of events (in which case the optimisation would be tiny compared to the cost of
+                // actually invoking all those events and running the rest of the application).
+            }
+
+            /************************************************************************************************************************/
+
+            /// <summary>
+            /// Calculates the number of times an event at `eventTime` should be invoked when the
+            /// <see cref="AnimancerState.NormalizedTime"/> goes from `previousTime` to `nextTime` on a looping animation.
+            /// </summary>
+            private static int GetLoopDelta(float previousTime, float nextTime, float eventTime)
+            {
+                previousTime -= eventTime;
+                nextTime -= eventTime;
+
+                var previousLoopCount = Mathf.FloorToInt(previousTime);
+                var nextLoopCount = Mathf.FloorToInt(nextTime);
+
+                var loopCount = nextLoopCount - previousLoopCount;
+
+                // Previous time must be inclusive.
+                // And next time must be exclusive.
+                // So if the previous time is exactly on a looped increment of the event time, count one more.
+                // And if the next time is exactly on a looped increment of the event time, count one less.
+                if (previousTime == previousLoopCount)
+                    loopCount++;
+                if (nextTime == nextLoopCount)
+                    loopCount--;
+
+                return loopCount;
+            }
+
+            /************************************************************************************************************************/
+
+            private static int _MaximumFullLoopCount = 3;
+
+            /// <summary>
+            /// The maximum number of times a looping animation can trigger all of its events in a single frame.
+            /// Default 3, Minimum 1.
+            /// </summary>
+            /// <remarks>
+            /// This limit should only ever be reached when a state has a very short length and high speed.
+            /// </remarks>
+            public static int MaximumFullLoopCount
+            {
+                get => _MaximumFullLoopCount;
+                set => _MaximumFullLoopCount = Math.Max(value, 1);
+            }
+
+            private bool InvokeAllEvents(Sequence events, int count, int playDirectionInt)
+            {
+                if (count > _MaximumFullLoopCount)
+                    count = _MaximumFullLoopCount;
+
+                var loopStartIndex = _NextEventIndex;
+                while (count-- > 0)
+                {
+                    do
+                    {
+                        events[_NextEventIndex].DelayInvoke(events.GetName(_NextEventIndex), State);
+
+                        if (!NextEventLooped(events, playDirectionInt))
+                            return false;
+                    }
+                    while (_NextEventIndex != loopStartIndex);
+                }
+
+                return true;
+            }
+
+            /************************************************************************************************************************/
+
+            private bool NextEventLooped(Sequence events, int playDirectionInt)
+            {
+                _NextEventIndex += playDirectionInt;
+
+                var count = events.Count;
+                if (_NextEventIndex >= count)
+                    _NextEventIndex = 0;
+                else if (_NextEventIndex < 0)
+                    _NextEventIndex = count - 1;
+
+                return true;
+            }
+
+            /************************************************************************************************************************/
+
+            /// <summary>End events are triggered every frame after their time passes.</summary>
+            /// <remarks>
+            /// This ensures that assigning the event after the time has passed
+            /// will still trigger it rather than leaving it playing indefinitely.
+            /// </remarks>
+            private void CheckEndEvent(float normalizedTime)
+            {
+                var endEvent = Events.EndEvent;
+                if (endEvent.callback == null)
+                    return;
+
+                if (normalizedTime > _PreviousNormalizedTime)// Playing Forwards.
+                {
+                    var eventTime = float.IsNaN(endEvent.normalizedTime)
+                        ? 1
+                        : endEvent.normalizedTime;
+
+                    if (normalizedTime > eventTime)
+                        endEvent.DelayInvoke(EndEventName, State);
+                }
+                else// Playing Backwards.
+                {
+                    var eventTime = float.IsNaN(endEvent.normalizedTime)
+                        ? 0
+                        : endEvent.normalizedTime;
+
+                    if (normalizedTime < eventTime)
+                        endEvent.DelayInvoke(EndEventName, State);
+                }
+            }
+
+            /************************************************************************************************************************/
+
+            /// <summary>
+            /// Sets the <see cref="AnimancerState.NormalizedTime"/>
+            /// to the <see cref="AnimancerState.NormalizedEndTime"/>
+            /// and invokes any remaining <see cref="AnimancerEvent"/>s.
+            /// </summary>
+            public void FinishImmediately()
+            {
+                var index = _NextEventIndex;
+                if (index == RecalculateEventIndex && Events.Count > 0)
+                {
+                    var normalizedTime = State.NormalizedTime;
+                    ValidateNextEventIndex(
+                        State.IsLooping,
+                        ref normalizedTime,
+                        out _,
+                        out _);
+                    index = _NextEventIndex;
+                }
+
+                State.NormalizedTime = State.NormalizedEndTime;
+
+                if (Events.Count > 0)
+                {
+                    if (State.EffectiveSpeed < 0)// Backwards.
+                    {
+                        for (int i = index; i >= 0; i--)
+                            Events[i].DelayInvoke(Events.GetName(i), State);
+                    }
+                    else// Forwards, 0, or NaN.
+                    {
+                        for (int i = index; i < Events.Count; i++)
+                            Events[i].DelayInvoke(Events.GetName(i), State);
+                    }
+                }
+
+                var endEvent = Events.EndEvent;
+                if (endEvent.callback != null)
+                    endEvent.DelayInvoke(EndEventName, State);
+
+                Invoker.InvokeAllAndClear();
+            }
+
+            /************************************************************************************************************************/
+
+            /// <summary>Returns "<see cref="Dispatcher"/> (Target State)".</summary>
+            public override string ToString()
+                => State != null
+                ? $"{nameof(Dispatcher)} ({State})"
+                : $"{nameof(Dispatcher)} (No Target State)";
+
+            /************************************************************************************************************************/
+
+            /// <inheritdoc/>
+            public void AppendDescription(StringBuilder text, string separator = "\n")
+            {
+                text.AppendField(separator, "State", State.GetPath());
+                text.AppendField(separator, "IsLooping", State.IsLooping);
+                text.AppendField(separator, "PreviousNormalizedTime", _PreviousNormalizedTime);
+                text.AppendField(separator, "NextEventIndex", _NextEventIndex);
+                text.AppendField(separator, "SequenceVersion", _SequenceVersion);
+                text.AppendField(separator, "WasPlayingForwards", _WasPlayingForwards);
+            }
+
+            /************************************************************************************************************************/
+        }
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/Events/AnimancerEvent.Dispatcher.cs.meta

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Packages/com.kybernetik.animancer/Runtime/Core/Events/AnimancerEvent.Invocation.cs

@@ -0,0 +1,206 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System;
+using System.Runtime.CompilerServices;
+using UnityEngine;
+using Object = UnityEngine.Object;
+
+namespace Animancer
+{
+    /// https://kybernetik.com.au/animancer/api/Animancer/AnimancerEvent
+    partial struct AnimancerEvent
+    {
+        /// <summary>An <see cref="AnimancerEvent"/> and other associated details used to invoke it.</summary>
+        /// https://kybernetik.com.au/animancer/api/Animancer/Invocation
+        public readonly struct Invocation
+        {
+            /************************************************************************************************************************/
+
+            /// <summary>The details of the event currently being triggered.</summary>
+            /// <remarks>Cleared after the event is invoked.</remarks>
+            public static Invocation Current { get; private set; }
+
+            /************************************************************************************************************************/
+
+            /// <summary>The <see cref="AnimancerEvent"/>.</summary>
+            public readonly AnimancerEvent Event;
+
+            /// <summary>The name of the <see cref="Event"/>.</summary>
+            public readonly StringReference Name;
+
+            /// <summary>The <see cref="AnimancerState"/> triggering the <see cref="Event"/>.</summary>
+            public readonly AnimancerState State;
+
+            /************************************************************************************************************************/
+
+            /// <summary>Creates a new <see cref="Invocation"/>.</summary>
+            public Invocation(
+                AnimancerEvent animancerEvent,
+                StringReference eventName,
+                AnimancerState state)
+            {
+                Event = animancerEvent;
+                State = state;
+                Name = eventName;
+            }
+
+            /************************************************************************************************************************/
+
+            /// <summary>
+            /// Sets the <see cref="Current"/>, invokes the <see cref="callback"/>,
+            /// then reverts the <see cref="Current"/>.
+            /// </summary>
+            /// <remarks>This method catches and logs any exception thrown by the <see cref="callback"/>.</remarks>
+            /// <exception cref="NullReferenceException">The <see cref="callback"/> is null.</exception>
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            public readonly void Invoke()
+            {
+#if UNITY_ASSERTIONS
+                var oldLayer = State.Layer;
+                var oldCommandCount = oldLayer.CommandCount;
+#endif
+
+                var previous = Current;
+                var parameter = CurrentParameter;
+
+                Current = this;
+                CurrentParameter = null;
+
+                try
+                {
+                    Event.callback();
+                }
+                catch (Exception exception)
+                {
+                    Debug.LogException(exception, State?.Graph?.Component as Object);
+                }
+
+                Current = previous;
+                CurrentParameter = parameter;
+
+#if UNITY_ASSERTIONS
+                if (Name == EndEventName)
+                    AssertEndEventInvoked(oldLayer, oldCommandCount);
+#endif
+            }
+
+            /************************************************************************************************************************/
+
+            /// <summary>
+            /// Returns the callback registered in the <see cref="AnimancerGraph.Events"/>
+            /// with the <see cref="Name"/> (or null if there isn't one).
+            /// </summary>
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            public readonly Action GetBoundCallback()
+                => Name.IsNullOrEmpty()
+                ? null
+                : State.Graph._Events?.Get(Name);
+
+            /************************************************************************************************************************/
+
+            /// <summary>Returns a string describing the contents of this invocation.</summary>
+            public override string ToString()
+                => $"{nameof(AnimancerEvent)}.{nameof(Invocation)}(" +
+                $"{nameof(Name)}={AnimancerUtilities.ToStringOrNull(Name)}, " +
+                $"NormalizedTime={Event.normalizedTime:0.##}, " +
+                $"Callback=({AnimancerReflection.ToStringDetailed(Event.callback)}), " +
+                $"{nameof(State)}={AnimancerUtilities.ToStringOrNull(State)})";
+
+            /************************************************************************************************************************/
+
+            /// <summary>
+            /// Invokes the callback bound to the <see cref="Name"/>
+            /// in the <see cref="AnimancerGraph.Events"/>.
+            /// </summary>
+            /// <remarks>
+            /// Logs <see cref="OptionalWarning.UselessEvent"/> if no callback is bound.
+            /// </remarks>
+            public void InvokeBoundCallback()
+            {
+                if (Name != null &&
+                    State.Graph._Events != null &&
+                    State.Graph._Events.TryGetValue(Name, out var callback))
+                {
+                    callback();
+                }
+#if UNITY_ASSERTIONS
+                // If the callback doesn't do anything else, then this is a useless event.
+                else if (Event.callback == AnimancerEvent.InvokeBoundCallback &&
+                    OptionalWarning.UselessEvent.IsEnabled())
+                {
+                    OptionalWarning.UselessEvent.Log(
+                        $"An {nameof(AnimancerEvent)} attempted to invoke the callback bound to the name" +
+                        $" '{AnimancerUtilities.ToStringOrNull(Name)}' but there is no callback" +
+                        $" bound to that name so the event may not be configured correctly." +
+                        $"\n• Normalized Time: {Event.normalizedTime}" +
+                        $"\n• State: {State}" +
+                        $"\n• Object: {AnimancerUtilities.ToStringOrNull(State.Graph?.Component)}",
+                        State.Graph?.Component);
+                }
+#endif
+            }
+
+            /************************************************************************************************************************/
+#if UNITY_ASSERTIONS
+            /************************************************************************************************************************/
+
+            /// <summary>[Assert-Only]
+            /// Call after invoking an end event to assert <see cref="OptionalWarning.EndEventInterrupt"/>.
+            /// </summary>
+            private readonly void AssertEndEventInvoked(AnimancerLayer oldLayer, int oldCommandCount)
+            {
+                if (ShouldLogEndEventInterrupt(oldLayer, oldCommandCount))
+                {
+                    OptionalWarning.EndEventInterrupt.Log(
+                        $"An End Event callback didn't stop the animation." +
+                        $" Animancer doesn't handle End Events automatically," +
+                        $" so the controlling script is responsible for stopping the animation," +
+                        $" often by playing a different one." +
+                        $"\n• State: {State}" +
+                        $"\n• Callback: {Event.callback.ToStringDetailed()}" +
+                        $"\n• End Events are triggered every frame after their time has passed:" +
+                        $" {Strings.DocsURLs.EndEvents.AsHtmlLink()}" +
+                        $"\n• To avoid this behaviour, use a regular Animancer Event instead:" +
+                        $" {Strings.DocsURLs.AnimancerEvents.AsHtmlLink()}",
+                        State.Graph?.Component);
+
+                    OptionalWarning.EndEventInterrupt.Disable();
+                }
+            }
+
+            /************************************************************************************************************************/
+
+            /// <summary>[Assert-Only] Should <see cref="OptionalWarning.EndEventInterrupt"/> be logged?</summary>
+            private readonly bool ShouldLogEndEventInterrupt(AnimancerLayer oldLayer, int oldCommandCount)
+            {
+                if (!OptionalWarning.EndEventInterrupt.IsEnabled())
+                    return false;
+
+                var events = State.SharedEvents;
+                if (events == null ||
+                    events.OnEnd != Event.callback)
+                    return false;
+
+                var newLayer = State.Layer;
+                if (oldLayer != newLayer ||
+                    oldCommandCount != newLayer.CommandCount ||
+                    !State.Graph.IsGraphPlaying ||
+                    !State.IsPlaying)
+                    return false;
+
+                var speed = State.EffectiveSpeed;
+                if (speed > 0)
+                    return State.NormalizedTime > State.NormalizedEndTime;
+                else if (speed < 0)
+                    return State.NormalizedTime < State.NormalizedEndTime;
+                else// Speed 0.
+                    return false;
+            }
+
+            /************************************************************************************************************************/
+#endif
+            /************************************************************************************************************************/
+        }
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/Events/AnimancerEvent.Invocation.cs.meta

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+  executionOrder: 0
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Packages/com.kybernetik.animancer/Runtime/Core/Events/AnimancerEvent.Invoker.cs

@@ -0,0 +1,136 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System.Collections.Generic;
+using System.Runtime.CompilerServices;
+using UnityEngine;
+
+namespace Animancer
+{
+    /// https://kybernetik.com.au/animancer/api/Animancer/AnimancerEvent
+    partial struct AnimancerEvent
+    {
+        /************************************************************************************************************************/
+
+        /// <summary>Events ready to be invoked by the next <see cref="Invoker.InvokeAllAndClear"/>.</summary>
+        /// <remarks>
+        /// This field should be inside the Invoker class.
+        /// But that can potentially cause a TypeLoadException if Invoker initializes before AnimancerEvent.
+        /// Having it out in AnimancerEvent avoids that possibility.
+        /// </remarks>
+        private static readonly List<Invocation>
+            InvocationQueue = new();
+
+        /************************************************************************************************************************/
+
+        /// <summary>Gathers delegates in a static list to be invoked at a later time by any child class.</summary>
+        /// https://kybernetik.com.au/animancer/api/Animancer/Invoker
+        [DefaultExecutionOrder(-30000)]// Run as soon as possible in whatever update cycle is being executed.
+        [ExecuteAlways]
+        public abstract class Invoker : MonoBehaviour
+        {
+            /************************************************************************************************************************/
+
+            /// <summary>Ensures that an appropriate <see cref="Invoker"/> has been created.</summary>
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            public static Invoker Initialize(bool fixedUpdate)
+                => fixedUpdate
+                ? InvokerFixed.Initialize()
+                : InvokerDynamic.Initialize();
+
+            /// <summary>Ensures that an appropriate <see cref="Invoker"/> has been created.</summary>
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            public static Invoker Initialize(AnimatorUpdateMode updateMode)
+            {
+                const AnimatorUpdateMode FixedUpdateMode =
+#if UNITY_2023_1_OR_NEWER
+                    AnimatorUpdateMode.Fixed;
+#else
+                    AnimatorUpdateMode.AnimatePhysics;
+#endif
+
+                return Initialize(updateMode == FixedUpdateMode);
+
+            }
+
+            /************************************************************************************************************************/
+
+            /// <summary>[Internal] Adds an event to the queue to be invoked by the next update.</summary>
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            internal static void Add(Invocation invocation)
+            {
+#if UNITY_ASSERTIONS
+                if (!HasEnabledInstance)
+                    Debug.LogWarning(
+                        $"There is no currently enabled {nameof(AnimancerEvent)}.{nameof(Invoker)}" +
+                        $" so events will not be invoked.");
+#endif
+
+                InvocationQueue.Add(invocation);
+            }
+
+            /************************************************************************************************************************/
+
+            /// <summary>
+            /// In case <see cref="InvokeAllAndClear"/> gets called recursively,
+            /// we need to avoid invoking the same event multiple times
+            /// without the performance cost of immediately removing them each from the queue.
+            /// </summary>
+            private static int _CurrentInvocation;
+
+            /// <summary>Invokes all queued events and clears the queue.</summary>
+            public static void InvokeAllAndClear()
+            {
+                while (_CurrentInvocation < InvocationQueue.Count)
+                    InvocationQueue[_CurrentInvocation++].Invoke();
+
+                InvocationQueue.Clear();
+                _CurrentInvocation = 0;
+            }
+
+            /************************************************************************************************************************/
+
+            /// <summary>Returns an enumerator for all invocations currently in the queue.</summary>
+            public static List<Invocation>.Enumerator EnumerateInvocationQueue()
+                => InvocationQueue.GetEnumerator();
+
+            /************************************************************************************************************************/
+#if UNITY_ASSERTIONS
+            /************************************************************************************************************************/
+
+            private static readonly List<Invoker>
+                Instances = new();
+
+            /************************************************************************************************************************/
+
+            /// <summary>[Assert-Only] Registers this instance.</summary>
+            protected virtual void Awake()
+                => Instances.Add(this);
+
+            /************************************************************************************************************************/
+
+            /// <summary>[Assert-Only] Un-registers this instance.</summary>
+            protected virtual void OnDestroy()
+                => Instances.Remove(this);
+
+            /************************************************************************************************************************/
+
+            /// <summary>[Assert-Only] Is there any <see cref="Behaviour.enabled"/> instance?</summary>
+            private static bool HasEnabledInstance
+            {
+                get
+                {
+                    for (int i = 0; i < Instances.Count; i++)
+                        if (Instances[i].enabled)
+                            return true;
+
+                    return false;
+                }
+            }
+
+            /************************************************************************************************************************/
+#endif
+            /************************************************************************************************************************/
+        }
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/Events/AnimancerEvent.Invoker.cs.meta

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Packages/com.kybernetik.animancer/Runtime/Core/Events/AnimancerEvent.InvokerDynamic.cs

@@ -0,0 +1,59 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System.Runtime.CompilerServices;
+using UnityEngine;
+
+namespace Animancer
+{
+    /// https://kybernetik.com.au/animancer/api/Animancer/AnimancerEvent
+    partial struct AnimancerEvent
+    {
+        /// <summary>Executes <see cref="Invoker.InvokeAllAndClear"/> after animations in the Dynamic Update cycle.</summary>
+        /// https://kybernetik.com.au/animancer/api/Animancer/InvokerDynamic
+        [AnimancerHelpUrl(typeof(InvokerDynamic))]
+        [AddComponentMenu("")]// Singleton creates itself.
+        public class InvokerDynamic : Invoker
+        {
+            /************************************************************************************************************************/
+
+            private static InvokerDynamic _Instance;
+
+            /// <summary>Creates the singleton instance.</summary>
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            public static InvokerDynamic Initialize()
+                => AnimancerUtilities.InitializeSingleton(ref _Instance);
+
+            /************************************************************************************************************************/
+
+            /// <summary>Should this system execute events?</summary>
+            /// <remarks>If disabled, this system will not be re-enabled automatically.</remarks>
+            public static bool Enabled
+            {
+                get => _Instance != null && _Instance.enabled;
+                set
+                {
+                    if (value)
+                    {
+                        Initialize();
+                        _Instance.enabled = true;
+                    }
+                    else if (_Instance != null)
+                    {
+                        _Instance.enabled = false;
+                    }
+                }
+            }
+
+            /************************************************************************************************************************/
+
+            /// <summary>After animation update with dynamic timestep.</summary>
+            protected virtual void LateUpdate()
+            {
+                InvokeAllAndClear();
+            }
+
+            /************************************************************************************************************************/
+        }
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/Events/AnimancerEvent.InvokerDynamic.cs.meta

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Packages/com.kybernetik.animancer/Runtime/Core/Events/AnimancerEvent.InvokerFixed.cs

@@ -0,0 +1,76 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System.Collections;
+using System.Runtime.CompilerServices;
+using UnityEngine;
+
+namespace Animancer
+{
+    /// https://kybernetik.com.au/animancer/api/Animancer/AnimancerEvent
+    partial struct AnimancerEvent
+    {
+        /// <summary>Executes <see cref="Invoker.InvokeAllAndClear"/> after animations in the Fixed Update cycle.</summary>
+        /// https://kybernetik.com.au/animancer/api/Animancer/InvokerFixed
+        [AnimancerHelpUrl(typeof(InvokerFixed))]
+        [AddComponentMenu("")]// Singleton creates itself.
+        public class InvokerFixed : Invoker
+        {
+            /************************************************************************************************************************/
+
+            private static InvokerFixed _Instance;
+
+            /// <summary>Creates the singleton instance.</summary>
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            public static InvokerFixed Initialize()
+                => AnimancerUtilities.InitializeSingleton(ref _Instance);
+
+            /************************************************************************************************************************/
+
+            /// <summary>Should this system execute events?</summary>
+            /// <remarks>If disabled, this system will not be re-enabled automatically.</remarks>
+            public static bool Enabled
+            {
+                get => _Instance != null && _Instance.enabled;
+                set
+                {
+                    if (value)
+                    {
+                        Initialize();
+                        _Instance.enabled = true;
+                    }
+                    else if (_Instance != null)
+                    {
+                        _Instance.enabled = false;
+                    }
+                }
+            }
+
+            /************************************************************************************************************************/
+
+            /// <summary>A cached instance of <see cref="UnityEngine.WaitForFixedUpdate"/>.</summary>
+            public static readonly WaitForFixedUpdate
+                WaitForFixedUpdate = new();
+
+            /************************************************************************************************************************/
+
+            /// <summary>Starts the <see cref="LateFixedUpdate"/> coroutine.</summary>
+            protected virtual void OnEnable()
+                => StartCoroutine(LateFixedUpdate());
+
+            /************************************************************************************************************************/
+
+            /// <summary>After animation update with fixed timestep.</summary>
+            private IEnumerator LateFixedUpdate()
+            {
+                while (true)
+                {
+                    yield return WaitForFixedUpdate;
+                    InvokeAllAndClear();
+                }
+            }
+
+            /************************************************************************************************************************/
+        }
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/Events/AnimancerEvent.InvokerFixed.cs.meta

@@ -0,0 +1,13 @@
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+guid: 7e7ae0209e44c77469a807230bd36ab5
+timeCreated: 1515060256
+licenseType: Store
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.kybernetik.animancer/Runtime/Core/Events/AnimancerEvent.Sequence.Serializable.cs

@@ -0,0 +1,446 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+#pragma warning disable CS0649 // Field is never assigned to, and will always have its default value.
+
+using System;
+using UnityEngine;
+
+namespace Animancer
+{
+    /// https://kybernetik.com.au/animancer/api/Animancer/AnimancerEvent
+    partial struct AnimancerEvent
+    {
+        /// https://kybernetik.com.au/animancer/api/Animancer/Sequence
+        partial class Sequence
+        {
+            /// <summary>
+            /// Serializable data which can be used to construct an <see cref="Sequence"/> using
+            /// <see cref="StringAsset"/>s and <see cref="IInvokable"/>s.
+            /// </summary>
+            /// https://kybernetik.com.au/animancer/api/Animancer/Serializable
+            [Serializable]
+            public class Serializable : ICloneable<Serializable>
+#if UNITY_EDITOR
+                , ISerializationCallbackReceiver
+#endif
+            {
+                /************************************************************************************************************************/
+                #region Fields and Properties
+                /************************************************************************************************************************/
+
+                [SerializeField]
+                private float[] _NormalizedTimes;
+
+                /// <summary>[<see cref="SerializeField"/>] The serialized <see cref="normalizedTime"/>s.</summary>
+                /// <remarks>The last item is used for the <see cref="EndEvent"/>.</remarks>
+                public ref float[] NormalizedTimes => ref _NormalizedTimes;
+
+                /************************************************************************************************************************/
+
+                [SerializeReference, Polymorphic]
+                private IInvokable[] _Callbacks;
+
+                /// <summary>[<see cref="SerializeField"/>] The serialized <see cref="callback"/>s.</summary>
+                /// <remarks>
+                /// This array only needs to be large enough to hold the last item that isn't null.
+                /// <para></para>
+                /// If this array is larger than the <see cref="NormalizedTimes"/>, the first item
+                /// with no corresponding time will be used as the <see cref="OnEnd"/> callback
+                /// and any others after that will be ignored.
+                /// </remarks>
+                public ref IInvokable[] Callbacks => ref _Callbacks;
+
+                /************************************************************************************************************************/
+
+                [SerializeField]
+                private StringAsset[] _Names;
+
+                /// <summary>[<see cref="SerializeField"/>] The serialized <see cref="Sequence.Names"/>.</summary>
+                public ref StringAsset[] Names => ref _Names;
+
+                /************************************************************************************************************************/
+#if UNITY_EDITOR
+                /************************************************************************************************************************/
+
+                /// <summary>[Editor-Only] [Internal]
+                /// The name of the array field which stores the <see cref="normalizedTime"/>s.
+                /// </summary>
+                internal const string NormalizedTimesField = nameof(_NormalizedTimes);
+
+                /// <summary>[Editor-Only] [Internal]
+                /// The name of the array field which stores the serialized <see cref="Callbacks"/>.
+                /// </summary>
+                internal const string CallbacksField = nameof(_Callbacks);
+
+                /// <summary>[Editor-Only] [Internal]
+                /// The name of the array field which stores the serialized <see cref="Names"/>.
+                /// </summary>
+                internal const string NamesField = nameof(_Names);
+
+                /// <summary>[Editor-Only] Disable Inspector Gadgets Nested Object Drawers.</summary>
+                private const bool NestedObjectDrawers = false;
+
+                /************************************************************************************************************************/
+#endif
+                /************************************************************************************************************************/
+
+                private Sequence _Events;
+
+                /// <summary>Returns the <see cref="Events"/> or <c>null</c> if it wasn't yet initialized.</summary>
+                public Sequence InitializedEvents
+                    => _Events;
+
+                /// <summary>
+                /// The runtime <see cref="Sequence"/> compiled from this <see cref="Serializable"/>.
+                /// Each call after the first will return the same reference.
+                /// </summary>
+                /// <remarks>
+                /// Unlike <see cref="GetEventsOptional"/>, this property will create an empty
+                /// <see cref="Sequence"/> instead of returning null if there are no events.
+                /// </remarks>
+                public Sequence Events
+                {
+                    get
+                    {
+                        if (_Events == null)
+                        {
+                            GetEventsOptional();
+                            _Events ??= new();
+                        }
+
+                        return _Events;
+                    }
+                    set => _Events = value;
+                }
+
+                /************************************************************************************************************************/
+                #endregion
+                /************************************************************************************************************************/
+                #region Initialization
+                /************************************************************************************************************************/
+
+                /// <summary>
+                /// Returns the runtime <see cref="Sequence"/> compiled from this <see cref="Serializable"/>.
+                /// Each call after the first will return the same reference.
+                /// </summary>
+                /// <remarks>
+                /// This method returns null if the sequence would be empty anyway and is used by the implicit
+                /// conversion from <see cref="Serializable"/> to <see cref="Sequence"/>.
+                /// </remarks>
+                public Sequence GetEventsOptional()
+                {
+                    if (_Events != null ||
+                        _NormalizedTimes == null)
+                        return _Events;
+
+                    var timeCount = _NormalizedTimes.Length;
+                    if (timeCount == 0)
+                        return null;
+
+                    var callbackCount = _Callbacks != null
+                        ? _Callbacks.Length
+                        : 0;
+
+                    var callback = callbackCount >= timeCount--
+                        ? GetInvoke(_Callbacks[timeCount])
+                        : null;
+                    var endEvent = new AnimancerEvent(_NormalizedTimes[timeCount], callback);
+
+                    _Events = new(timeCount)
+                    {
+                        EndEvent = endEvent,
+                        Count = timeCount,
+                        Names = StringAsset.ToStringReferences(_Names),
+                    };
+
+                    var events = _Events._Events;
+                    for (int i = 0; i < timeCount; i++)
+                    {
+                        callback = i < callbackCount
+                            ? GetInvoke(_Callbacks[i])
+                            : InvokeBoundCallback;
+
+                        events[i] = new(_NormalizedTimes[i], callback);
+                    }
+
+                    return _Events;
+                }
+
+                /// <summary>Calls <see cref="GetEventsOptional"/>.</summary>
+                public static implicit operator Sequence(Serializable serializable)
+                    => serializable?.GetEventsOptional();
+
+                /************************************************************************************************************************/
+
+                /// <summary>
+                /// Returns the <see cref="IInvokable.Invoke"/> if the `invokable` isn't <c>null</c>.
+                /// Otherwise, returns <c>null</c>.
+                /// </summary>
+                public static Action GetInvoke(IInvokable invokable)
+                    => invokable != null
+                    ? invokable.Invoke
+                    : InvokeBoundCallback;
+
+                /************************************************************************************************************************/
+                #endregion
+                /************************************************************************************************************************/
+                #region End Event
+                /************************************************************************************************************************/
+
+                /// <summary>Returns the <see cref="normalizedTime"/> of the <see cref="EndEvent"/>.</summary>
+                /// <remarks>If the value is not set, the value is determined by <see cref="GetDefaultNormalizedEndTime"/>.</remarks>
+                public float GetNormalizedEndTime(float speed = 1)
+                {
+                    return _NormalizedTimes.IsNullOrEmpty()
+                        ? GetDefaultNormalizedEndTime(speed)
+                        : _NormalizedTimes[^1];
+                }
+
+                /************************************************************************************************************************/
+
+                /// <summary>Sets the <see cref="normalizedTime"/> of the <see cref="EndEvent"/>.</summary>
+                public void SetNormalizedEndTime(float normalizedTime)
+                {
+                    if (_NormalizedTimes.IsNullOrEmpty())
+                        _NormalizedTimes = new float[] { normalizedTime };
+                    else
+                        _NormalizedTimes[^1] = normalizedTime;
+                }
+
+                /************************************************************************************************************************/
+
+                /// <summary>Sets the <see cref="callback"/> of the <see cref="EndEvent"/>.</summary>
+                public void SetEndCallback(IInvokable callback = null)
+                {
+                    if (_NormalizedTimes.IsNullOrEmpty())
+                        _NormalizedTimes = new float[] { float.NaN };
+
+                    InsertOptionalItem(ref _Callbacks, _NormalizedTimes.Length - 1, callback);
+                }
+
+                /************************************************************************************************************************/
+
+                /// <summary>Sets the data of the <see cref="EndEvent"/>.</summary>
+                public void SetEndEvent(float normalizedTime = float.NaN, IInvokable callback = null)
+                {
+                    if (_NormalizedTimes.IsNullOrEmpty())
+                        _NormalizedTimes = new float[] { normalizedTime };
+                    else
+                        _NormalizedTimes[^1] = normalizedTime;
+
+                    InsertOptionalItem(ref _Callbacks, _NormalizedTimes.Length - 1, callback);
+                }
+
+                /************************************************************************************************************************/
+                #endregion
+                /************************************************************************************************************************/
+                #region Other Events
+                /************************************************************************************************************************/
+
+                /// <summary>Adds an event to the serialized fields.</summary>
+                public int AddEvent(float normalizedTime, IInvokable callback = null, StringAsset name = null)
+                {
+                    int index;
+
+                    if (_NormalizedTimes.IsNullOrEmpty())
+                    {
+                        _NormalizedTimes = new float[] { normalizedTime, float.NaN };
+                        index = 0;
+                    }
+                    else
+                    {
+                        index = _NormalizedTimes.Length - 1;
+
+                        for (int i = 0; i < _NormalizedTimes.Length - 1; i++)
+                        {
+                            if (_NormalizedTimes[i] > normalizedTime)
+                            {
+                                index = i;
+                                break;
+                            }
+                        }
+
+                        AnimancerUtilities.InsertAt(ref _NormalizedTimes, index, normalizedTime);
+                    }
+
+                    InsertOptionalItem(ref _Callbacks, index, callback);
+                    InsertOptionalItem(ref _Names, index, name);
+
+                    return index;
+                }
+
+                /************************************************************************************************************************/
+
+                /// <summary>Inserts an `item` at the specified `index` in an optional `array`.</summary>
+                /// <remarks>
+                /// If the `item` is <c>null</c> then the array only needs
+                /// to be expanded if it was already larger than the `index`.
+                /// </remarks>
+                private static void InsertOptionalItem<T>(ref T[] array, int index, T item)
+                    where T : class
+                {
+                    if (item == null &&
+                        (array == null || array.Length < index))
+                        return;
+
+                    AnimancerUtilities.InsertAt(ref array, index, item);
+                }
+
+                /************************************************************************************************************************/
+
+                /// <summary>Removes an event from the serialized fields.</summary>
+                public void RemoveEvent(int index)
+                {
+                    if (_NormalizedTimes.IsNullOrEmpty())
+                        return;
+
+                    AnimancerUtilities.RemoveAt(ref _NormalizedTimes, index);
+
+                    if (_Callbacks != null && _Callbacks.Length > index)
+                        AnimancerUtilities.RemoveAt(ref _Callbacks, index);
+
+                    if (_Names != null && _Names.Length > index)
+                        AnimancerUtilities.RemoveAt(ref _Names, index);
+                }
+
+                /************************************************************************************************************************/
+
+                /// <summary>Removes all events.</summary>
+                public void Clear(bool keepEndEvent = false)
+                {
+                    if (keepEndEvent)
+                    {
+                        if (_NormalizedTimes != null && _NormalizedTimes.Length > 0)
+                            _NormalizedTimes = new float[] { _NormalizedTimes[^1] };
+                        else
+                            _NormalizedTimes = null;
+
+                        if (_Callbacks != null && _Callbacks.Length > 0)
+                            _Callbacks = new IInvokable[] { _Callbacks[^1] };
+                        else
+                            _Callbacks = null;
+                    }
+                    else
+                    {
+                        _NormalizedTimes = null;
+                        _Callbacks = null;
+                    }
+
+                    _Names = null;
+                }
+
+                /************************************************************************************************************************/
+                #endregion
+                /************************************************************************************************************************/
+                #region Copying
+                /************************************************************************************************************************/
+
+                /// <summary>Creates a new <see cref="Serializable"/> and copies the contents of <c>this</c> into it.</summary>
+                /// <remarks>To copy into an existing sequence, use <see cref="CopyFrom"/> instead.</remarks>
+                public Serializable Clone()
+                {
+                    var clone = new Serializable();
+                    clone.CopyFrom(this);
+                    return clone;
+                }
+
+                /// <inheritdoc/>
+                public Serializable Clone(CloneContext context)
+                    => Clone();
+
+                /************************************************************************************************************************/
+
+                /// <inheritdoc/>
+                public void CopyFrom(Serializable copyFrom)
+                {
+                    AnimancerUtilities.CopyExactArray(copyFrom._NormalizedTimes, ref _NormalizedTimes);
+                    AnimancerUtilities.CopyExactArray(copyFrom._Callbacks, ref _Callbacks);
+                    AnimancerUtilities.CopyExactArray(copyFrom._Names, ref _Names);
+                }
+
+                /************************************************************************************************************************/
+                #endregion
+                /************************************************************************************************************************/
+                #region Serialization
+                /************************************************************************************************************************/
+#if UNITY_EDITOR
+                /************************************************************************************************************************/
+
+                /// <summary>[Editor-Only] Does nothing.</summary>
+                void ISerializationCallbackReceiver.OnAfterDeserialize() { }
+
+                /************************************************************************************************************************/
+
+                /// <summary>[Editor-Only] [Internal]
+                /// Called by <see cref="ISerializationCallbackReceiver.OnBeforeSerialize"/>.
+                /// </summary>
+                internal static event Action<Serializable> OnBeforeSerialize;
+
+                /// <summary>[Editor-Only] Ensures that the events are sorted by time (excluding the end event).</summary>
+                void ISerializationCallbackReceiver.OnBeforeSerialize()
+                    => OnBeforeSerialize?.Invoke(this);
+
+                /************************************************************************************************************************/
+
+                /// <summary>[Editor-Only] [Internal]
+                /// Should the arrays be prevented from reducing their size when their last elements are unused?
+                /// </summary>
+                internal static bool DisableCompactArrays { get; set; }
+
+                /// <summary>[Editor-Only] [Internal]
+                /// Removes empty data from the ends of the arrays to reduce the serialized data size.
+                /// </summary>
+                internal void CompactArrays()
+                {
+                    if (DisableCompactArrays)
+                        return;
+
+                    // If there is only one time and it is NaN, we don't need to store anything.
+                    if (_NormalizedTimes == null ||
+                        (_NormalizedTimes.Length == 1 &&
+                        (_Callbacks == null || _Callbacks.Length == 0) &&
+                        (_Names == null || _Names.Length == 0) &&
+                        float.IsNaN(_NormalizedTimes[0])))
+                    {
+                        _NormalizedTimes = Array.Empty<float>();
+                        _Callbacks = Array.Empty<IInvokable>();
+                        _Names = Array.Empty<StringAsset>();
+                        return;
+                    }
+
+                    Trim(ref _Callbacks, _NormalizedTimes.Length, callback => callback != null);
+                    Trim(ref _Names, _NormalizedTimes.Length, name => name != null);
+                }
+
+                /************************************************************************************************************************/
+
+                /// <summary>[Editor-Only] Removes unimportant values from the end of the `array`.</summary>
+                private static void Trim<T>(ref T[] array, int maxLength, Func<T, bool> isImportant)
+                {
+                    if (array == null)
+                        return;
+
+                    var count = Math.Min(array.Length, maxLength);
+
+                    while (count >= 1)
+                    {
+                        var item = array[count - 1];
+                        if (isImportant(item))
+                            break;
+                        else
+                            count--;
+                    }
+
+                    Array.Resize(ref array, count);
+                }
+
+                /************************************************************************************************************************/
+#endif
+                /************************************************************************************************************************/
+                #endregion
+                /************************************************************************************************************************/
+            }
+        }
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/Events/AnimancerEvent.Sequence.Serializable.cs.meta

@@ -0,0 +1,13 @@
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+guid: 3fdae2a3656b01946b64f620d7cff364
+timeCreated: 1515060256
+licenseType: Store
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.kybernetik.animancer/Runtime/Core/Events/AnimancerEvent.Sequence.cs.meta

@@ -0,0 +1,13 @@
+fileFormatVersion: 2
+guid: 32e43f9433f92a3428077ed007e0e287
+timeCreated: 1515060256
+licenseType: Store
+MonoImporter:
+  externalObjects: {}
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+  defaultReferences: []
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+  icon: {instanceID: 0}
+  userData: 
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+  assetBundleVariant: 

Packages/com.kybernetik.animancer/Runtime/Core/Events/AnimancerEvent.cs

@@ -0,0 +1,375 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System;
+using System.Runtime.CompilerServices;
+using System.Text;
+using UnityEngine;
+
+namespace Animancer
+{
+    /// <summary>
+    /// A <see cref="callback"/> delegate
+    /// paired with a <see cref="normalizedTime"/> which determines when to invoke it.
+    /// </summary>
+    /// <remarks>
+    /// <strong>Documentation:</strong>
+    /// <see href="https://kybernetik.com.au/animancer/docs/manual/events/animancer">
+    /// Animancer Events</see>
+    /// </remarks>
+    /// https://kybernetik.com.au/animancer/api/Animancer/AnimancerEvent
+    /// 
+    public partial struct AnimancerEvent : IEquatable<AnimancerEvent>
+    {
+        /************************************************************************************************************************/
+        #region Event
+        /************************************************************************************************************************/
+
+        /// <summary>The <see cref="AnimancerState.NormalizedTime"/> at which to invoke the <see cref="callback"/>.</summary>
+        public float normalizedTime;
+
+        /// <summary>The delegate to invoke when the <see cref="normalizedTime"/> passes.</summary>
+        public Action callback;
+
+        /************************************************************************************************************************/
+
+        /// <summary>The largest possible float value less than 1.</summary>
+        /// <remarks>
+        /// This value is useful for placing events at the end of a looping animation since they do not allow the
+        /// <see cref="normalizedTime"/> to be greater than or equal to 1.
+        /// </remarks>
+        public const float
+            AlmostOne = 0.99999994f;
+
+        /************************************************************************************************************************/
+
+        /// <summary>The event name used for <see cref="Sequence.EndEvent"/>s.</summary>
+        /// <remarks>
+        /// This is a <see cref="StringReference.Unique"/> so that even if the same name happens
+        /// to be used elsewhere, it would be treated as a different name.
+        /// The reason for this is explained in <see cref="NamedEventDictionary.AssertNotEndEvent"/>.
+        /// </remarks>
+        public static readonly StringReference
+            EndEventName = StringReference.Unique("EndEvent");
+
+        /************************************************************************************************************************/
+
+        /// <summary>Does nothing.</summary>
+        /// <remarks>This delegate can be used for events which would otherwise have a <c>null</c> <see cref="callback"/>.</remarks>
+        public static readonly Action
+            DummyCallback = Dummy;
+
+        /// <summary>Does nothing.</summary>
+        /// <remarks>Used by <see cref="DummyCallback"/>.</remarks>
+        private static void Dummy() { }
+
+        /// <summary>Is the `callback` <c>null</c> or the <see cref="DummyCallback"/>?</summary>
+        public static bool IsNullOrDummy(Action callback)
+            => callback == null
+            || callback == DummyCallback;
+
+        /************************************************************************************************************************/
+
+        /// <summary>Creates a new <see cref="AnimancerEvent"/>.</summary>
+        public AnimancerEvent(float normalizedTime, Action callback)
+        {
+            this.normalizedTime = normalizedTime;
+            this.callback = callback;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Returns a string describing the details of this event.</summary>
+        public readonly override string ToString()
+        {
+            var text = StringBuilderPool.Instance.Acquire();
+            text.Append($"{nameof(AnimancerEvent)}(");
+            AppendDetails(text);
+            text.Append(')');
+            return text.ReleaseToString();
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Appends the details of this event to the `text`.</summary>
+        public readonly void AppendDetails(StringBuilder text)
+        {
+            text.Append("NormalizedTime: ")
+                .Append(normalizedTime);
+
+            var callbacks = AnimancerReflection.GetInvocationList(callback);
+            if (callbacks != null)
+            {
+                text.Append(", Callbacks: [")
+                    .Append(callbacks.Length)
+                    .Append("] { ");
+
+                for (int i = 0; i < callbacks.Length; i++)
+                {
+                    if (i > 0)
+                        text.Append(", ");
+
+                    text.AppendDelegate(callbacks[i]);
+                }
+
+                text.Append(" }");
+            }
+            else
+            {
+                text.Append(", Callback: ")
+                    .AppendDelegate(callback);
+            }
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Invocation
+        /************************************************************************************************************************/
+
+        /// <summary>The details of the event currently being triggered.</summary>
+        /// <remarks>Cleared after the event is invoked.</remarks>
+        // Having the underlying field here can cause type initialization errors due to circular dependencies.
+        public static Invocation Current
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            get => Invocation.Current;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// A cached delegate which calls <see cref="Invocation.InvokeBoundCallback"/>
+        /// on the <see cref="Current"/>.
+        /// </summary>
+        public static readonly Action
+            InvokeBoundCallback = InvokeCurrentBoundCallback;
+
+        /// <summary>
+        /// Calls <see cref="Invocation.InvokeBoundCallback"/> on the <see cref="Current"/>.
+        /// </summary>
+        private static void InvokeCurrentBoundCallback()
+            => Current.InvokeBoundCallback();
+
+        /************************************************************************************************************************/
+
+        /// <summary>The custom parameter of the event currently being triggered.</summary>
+        /// <remarks>Cleared after the event is finished.</remarks>
+        public static object CurrentParameter { get; private set; }
+
+        /// <summary>Calls <see cref="ConvertableUtilities.ConvertOrThrow"/> on the <see cref="CurrentParameter"/>.</summary>
+        public static T GetCurrentParameter<T>()
+            => ConvertableUtilities.ConvertOrThrow<T>(CurrentParameter);
+
+        /// <summary>Returns a new delegate which invokes the `callback` using <see cref="GetCurrentParameter{T}"/>.</summary>
+        /// <remarks>
+        /// If <typeparamref name="T"/> is <see cref="string"/>,
+        /// consider using <see cref="Parametize(Action{string})"/> instead of this.
+        /// </remarks>
+        /// <exception cref="ArgumentNullException">The `callback` is <c>null</c>.</exception>
+        public static Action Parametize<T>(Action<T> callback)
+        {
+#if UNITY_ASSERTIONS
+            if (callback == null)
+                throw new ArgumentNullException(
+                    nameof(callback),
+                    $"Can't {nameof(Parametize)} a null callback.");
+#endif
+
+            return () => callback(GetCurrentParameter<T>());
+        }
+
+        /// <summary>Returns a new delegate which invokes the `callback` using the <see cref="CurrentParameter"/>.</summary>
+        /// <exception cref="ArgumentNullException">The `callback` is <c>null</c>.</exception>
+        public static Action Parametize(Action<string> callback)
+        {
+#if UNITY_ASSERTIONS
+            if (callback == null)
+                throw new ArgumentNullException(
+                    nameof(callback),
+                    $"Can't {nameof(Parametize)} a null callback.");
+#endif
+
+            return () => callback(CurrentParameter?.ToString());
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Assert-Only]
+        /// Logs an error if the `callback` doesn't contain a <see cref="Parameter{T}.Invoke"/>
+        /// so that adding to it with <see cref="Parametize{T}(Action{T})"/> can use that parameter.
+        /// </summary>
+        [System.Diagnostics.Conditional(Strings.Assertions)]
+        public static void AssertContainsParameter<T>(Action callback)
+        {
+            if (!ContainsParameterInvoke<T>(callback))
+                Debug.LogWarning(
+                    $"Adding parametized callback will do nothing because the existing callback" +
+                    $" doesn't contain a {typeof(T).GetNameCS()} parameter." +
+                    $"\n• Existing Callback: {callback.ToStringDetailed()}");
+        }
+
+        /// <summary>Does the `callback` contain a <see cref="Parameter{T}.Invoke"/>?</summary>
+        private static bool ContainsParameterInvoke<T>(Action callback)
+        {
+            if (callback == null)
+                return false;
+
+            if (IsParameterInvoke<T>(callback))
+                return true;
+
+            var invocations = AnimancerReflection.GetInvocationList(callback);
+
+            if (invocations.Length == 1 && ReferenceEquals(invocations[0], callback))
+                return false;
+
+            for (int i = 0; i < invocations.Length; i++)
+            {
+                var invocation = invocations[i];
+                if (IsParameterInvoke<T>(invocation))
+                    return true;
+            }
+
+            return false;
+        }
+
+        /// <summary>Is the `callback` a call to <see cref="Parameter{T}.Invoke"/>?</summary>
+        private static bool IsParameterInvoke<T>(Delegate callback)
+            => callback.Target is IParameter parameter
+            && callback.Method.Name == nameof(IInvokable.Invoke)
+            && typeof(T).IsAssignableFrom(parameter.Value.GetType());
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Adds this event to the <see cref="Invoker"/>
+        /// which will call <see cref="Invocation.Invoke"/> later in the current frame.
+        /// </summary>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public readonly void DelayInvoke(
+            StringReference eventName,
+            AnimancerState state)
+            => Invoker.Add(new(this, eventName, state));
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Assert-Conditional]
+        /// This method should be called when an animation is played.
+        /// It asserts that either no event is currently being triggered
+        /// or that the event is being triggered inside `playing`.
+        /// Otherwise, it logs <see cref="OptionalWarning.EventPlayMismatch"/>.
+        /// </summary>
+        [System.Diagnostics.Conditional(Strings.Assertions)]
+        public static void AssertEventPlayMismatch(AnimancerGraph playing)
+        {
+#if UNITY_ASSERTIONS
+            if (Current.State == null ||
+                Current.State.Graph == playing ||
+                OptionalWarning.EventPlayMismatch.IsDisabled())
+                return;
+
+            OptionalWarning.EventPlayMismatch.Log(
+                $"An Animancer Event triggered by '{Current.State}' on '{Current.State.Graph}'" +
+                $" was used to play an animation on a different character ('{playing}')." +
+                $"\n\nThis most commonly happens when a Transition is shared by multiple characters" +
+                $" and they all register their own callbacks to its events which leads to" +
+                $" those events being triggered by the wrong character." +
+                $"\n\n{Current}",
+                playing.Component);
+#endif
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Returns either the <see cref="AnimancerGraph.DefaultFadeDuration"/>
+        /// or the <see cref="AnimancerState.RemainingDuration"/>
+        /// of the <see cref="Current"/> state (whichever is higher).
+        /// </summary>
+        public static float GetFadeOutDuration()
+            => GetFadeOutDuration(Current.State, AnimancerGraph.DefaultFadeDuration);
+
+        /// <summary>
+        /// Returns either the `minDuration` or the <see cref="AnimancerState.RemainingDuration"/>
+        /// of the <see cref="Current"/> state (whichever is higher).
+        /// </summary>
+        public static float GetFadeOutDuration(float minDuration)
+            => GetFadeOutDuration(Current.State, minDuration);
+
+        /// <summary>
+        /// Returns either the `minDuration` or the <see cref="AnimancerState.RemainingDuration"/>
+        /// of the `state` (whichever is higher).
+        /// </summary>
+        public static float GetFadeOutDuration(AnimancerState state, float minDuration)
+        {
+            if (state == null)
+                return minDuration;
+
+            var time = state.Time;
+            var speed = state.EffectiveSpeed;
+            if (speed == 0)
+                return minDuration;
+
+            float remainingDuration;
+            if (state.IsLooping)
+            {
+                var previousTime = time - speed * Time.deltaTime;
+                var inverseLength = 1f / state.Length;
+
+                // If we just passed the end of the animation, the remaining duration would technically be the full
+                // duration of the animation, so we most likely want to use the minimum duration instead.
+                if (Math.Floor(time * inverseLength) != Math.Floor(previousTime * inverseLength))
+                    return minDuration;
+            }
+
+            if (speed > 0)
+            {
+                remainingDuration = (state.Length - time) / speed;
+            }
+            else
+            {
+                remainingDuration = time / -speed;
+            }
+
+            return Math.Max(minDuration, remainingDuration);
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Operators
+        /************************************************************************************************************************/
+
+        /// <summary>Are the <see cref="normalizedTime"/> and <see cref="callback"/> equal?</summary>
+        public static bool operator ==(AnimancerEvent a, AnimancerEvent b)
+            => a.Equals(b);
+
+        /// <summary>Are the <see cref="normalizedTime"/> and <see cref="callback"/> not equal?</summary>
+        public static bool operator !=(AnimancerEvent a, AnimancerEvent b)
+            => !a.Equals(b);
+
+        /************************************************************************************************************************/
+
+        /// <summary>[<see cref="IEquatable{AnimancerEvent}"/>]
+        /// Are the <see cref="normalizedTime"/> and <see cref="callback"/> of this event equal to `other`?
+        /// </summary>
+        public readonly bool Equals(AnimancerEvent other)
+            => callback == other.callback
+            && normalizedTime.IsEqualOrBothNaN(other.normalizedTime);
+
+        /// <inheritdoc/>
+        public readonly override bool Equals(object obj)
+            => obj is AnimancerEvent animancerEvent
+            && Equals(animancerEvent);
+
+        /// <inheritdoc/>
+        public readonly override int GetHashCode()
+            => AnimancerUtilities.Hash(-78069441,
+                normalizedTime.GetHashCode(),
+                callback.SafeGetHashCode());
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/Events/AnimancerEvent.cs.meta

@@ -0,0 +1,13 @@
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+guid: 6c5dbe324bf11624d95460fa335ae439
+timeCreated: 1515060256
+licenseType: Store
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.kybernetik.animancer/Runtime/Core/Events/AnimancerState.Events.cs

@@ -0,0 +1,406 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System.Runtime.CompilerServices;
+using UnityEngine;
+
+namespace Animancer
+{
+    /// https://kybernetik.com.au/animancer/api/Animancer/AnimancerState
+    partial class AnimancerState
+    {
+        /************************************************************************************************************************/
+
+        /// <summary>The system which manages the <see cref="SharedEvents"/>.</summary>
+        private AnimancerEvent.Dispatcher _EventDispatcher;
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Events which will be triggered while this state plays
+        /// based on its <see cref="NormalizedTime"/>.
+        /// </summary>
+        /// 
+        /// <remarks>
+        /// This property tries to ensure that the event sequence is only referenced by this state.
+        /// <list type="bullet">
+        /// <item>
+        /// If the reference was <c>null</c>,
+        /// a new sequence will be created.
+        /// </item>
+        /// <item>
+        /// If a reference was assigned to <see cref="SharedEvents"/>,
+        /// it will be cloned so this state owns the clone.
+        /// </item>
+        /// </list>
+        /// <para></para>
+        /// Using <see cref="Events(object)"/> or <see cref="Events(object, out AnimancerEvent.Sequence)"/>
+        /// is often safer than this property since they help detect if multiple scripts are using the same
+        /// state which could lead to unexpected bugs if they each assign conflicting callbacks.
+        /// <para></para>
+        /// <strong>Documentation:</strong>
+        /// <see href="https://kybernetik.com.au/animancer/docs/manual/events/animancer">
+        /// Animancer Events</see>
+        /// </remarks>
+        public AnimancerEvent.Sequence OwnedEvents
+        {
+            get
+            {
+                _EventDispatcher ??= new(this);
+                _EventDispatcher.InitializeEvents(out var events);
+                return events;
+            }
+            set
+            {
+                if (value != null)
+                    (_EventDispatcher ??= new(this)).SetEvents(value, true);
+                else
+                    _EventDispatcher = null;
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Events which will be triggered while this state plays
+        /// based on its <see cref="NormalizedTime"/>.
+        /// </summary>
+        /// 
+        /// <remarks>
+        /// This reference is <c>null</c> by default and once assigned it may be shared by multiple states.
+        /// <para></para>
+        /// <strong>Documentation:</strong>
+        /// <see href="https://kybernetik.com.au/animancer/docs/manual/events/animancer">
+        /// Animancer Events</see>
+        /// </remarks>
+        public AnimancerEvent.Sequence SharedEvents
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            get => _EventDispatcher?.Events;
+            set
+            {
+                if (value != null)
+                    (_EventDispatcher ??= new(this)).SetEvents(value, false);
+                else
+                    _EventDispatcher = null;
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Have the <see cref="SharedEvents"/> or <see cref="OwnedEvents"/> been initialized?</summary>
+        /// <remarks>
+        /// <strong>Documentation:</strong>
+        /// <see href="https://kybernetik.com.au/animancer/docs/manual/events/animancer">
+        /// Animancer Events</see>
+        /// </remarks>
+        public bool HasEvents
+            => _EventDispatcher != null;
+
+        /************************************************************************************************************************/
+
+        /// <summary>Have the <see cref="OwnedEvents"/> been initialized?</summary>
+        /// <remarks>
+        /// <strong>Documentation:</strong>
+        /// <see href="https://kybernetik.com.au/animancer/docs/manual/events/animancer">
+        /// Animancer Events</see>
+        /// </remarks>
+        public bool HasOwnedEvents
+            => _EventDispatcher != null
+            && _EventDispatcher.HasOwnEvents;
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// If the <see cref="OwnedEvents"/> haven't been initialized yet,
+        /// this method gets them and returns <c>true</c>.
+        /// </summary>
+        /// 
+        /// <remarks>
+        /// This method tries to ensure that the event sequence is only referenced by this state.
+        /// <list type="bullet">
+        /// <item>
+        /// If the reference was <c>null</c>,
+        /// a new sequence will be created.
+        /// </item>
+        /// <item>
+        /// If a reference was assigned to <see cref="SharedEvents"/>,
+        /// it will be cloned so this state owns the clone.
+        /// </item>
+        /// </list>
+        /// In both of those cases, this method returns <c>true</c>
+        /// to indicate that the caller should initialize their event callbacks.
+        /// <para></para>
+        /// Also calls <see cref="AssertOwnership"/>.
+        /// <para></para>
+        /// <strong>Documentation:</strong>
+        /// <see href="https://kybernetik.com.au/animancer/docs/manual/events/animancer">
+        /// Animancer Events</see>
+        /// <para></para>
+        /// <strong>Example:</strong>
+        /// <code>
+        /// public static readonly StringReference EventName = "Event Name";
+        /// 
+        /// ...
+        /// 
+        /// AnimancerState state = animancerComponent.Play(animation);
+        /// if (state.Events(this, out AnimancerEvent.Sequence events))
+        /// {
+        ///     events.SetCallback(EventName, OnAnimationEvent);
+        ///     events.OnEnd = OnAnimationEnded;
+        /// }
+        /// </code>
+        /// If multiple different owners need to take turns reusing the same state, 
+        /// use <see cref="Events(ref AnimancerEvent.Sequence)"/> instead.
+        /// <para></para>
+        /// If you only need to initialize the End Event, 
+        /// consider using <see cref="Events(object)"/> instead.
+        /// </remarks>
+        public bool Events(object owner, out AnimancerEvent.Sequence events)
+        {
+            AssertOwnership(owner);
+            _EventDispatcher ??= new(this);
+            return _EventDispatcher.InitializeEvents(out events);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// If the <see cref="OwnedEvents"/> haven't been initialized yet,
+        /// this method gets them and returns <c>true</c>.
+        /// </summary>
+        /// 
+        /// <remarks>
+        /// This method tries to ensure that the event sequence is only referenced by this state.
+        /// <list type="bullet">
+        /// <item>
+        /// If the reference was <c>null</c>,
+        /// a new sequence will be created.
+        /// </item>
+        /// <item>
+        /// If a reference was assigned to <see cref="SharedEvents"/>,
+        /// it will be cloned so this state owns the clone.
+        /// </item>
+        /// </list>
+        /// <para></para>
+        /// Also calls <see cref="AssertOwnership"/>.
+        /// <para></para>
+        /// <strong>Documentation:</strong>
+        /// <see href="https://kybernetik.com.au/animancer/docs/manual/events/animancer">
+        /// Animancer Events</see>
+        /// <para></para>
+        /// <strong>Example:</strong>
+        /// <code>
+        /// AnimancerState state = animancerComponent.Play(animation);
+        /// state.Events(this).OnEnd ??= OnAnimationEnded;
+        /// </code>
+        /// If multiple different owners need to take turns reusing the same state, 
+        /// use <see cref="Events(ref AnimancerEvent.Sequence)"/> instead.
+        /// <para></para>
+        /// If you need to initialize more than just the End Event, 
+        /// use <see cref="Events(object, out AnimancerEvent.Sequence)"/> instead.
+        /// </remarks>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public AnimancerEvent.Sequence Events(object owner)
+        {
+            Events(owner, out var events);
+            return events;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// If the `events` are <c>null</c>, this method assigns a <c>new</c> <see cref="AnimancerEvent.Sequence"/>
+        /// and returns <c>true</c> to indicate that the caller should now initialize their event callbacks.
+        /// Otherwise, this method simply assigns the provided `events` to this state and returns <c>false</c>.
+        /// </summary>
+        /// 
+        /// <remarks>
+        /// If this state already had events, the <c>new</c> <see cref="AnimancerEvent.Sequence"/>
+        /// will be a copy of those events for the caller to own.
+        /// <para></para>
+        /// This method allows multiple callers to safely take turns using the same state
+        /// as long as they each call this method to assign their own events.
+        /// <para></para>
+        /// Also calls <see cref="AssertOwnership"/>.
+        /// <para></para>
+        /// <strong>Documentation:</strong>
+        /// <see href="https://kybernetik.com.au/animancer/docs/manual/events/animancer">
+        /// Animancer Events</see>
+        /// <para></para>
+        /// <strong>Example:</strong>
+        /// <code>
+        /// public static readonly StringReference EventName = "Event Name";
+        /// 
+        /// private AnimancerEvent.Sequence _Events;// Don't new() this.
+        /// 
+        /// ...
+        /// 
+        /// AnimancerState state = animancerComponent.Play(animation);
+        /// 
+        /// // The first time this is called it will assign a new event sequence
+        /// // to the _Events and return true so you can initialize it.
+        /// 
+        /// // After that, it will just re-assign the _Events to the state.
+        /// // and return false so you don't need to re-initialize the events.
+        /// 
+        /// if (state.Events(ref _Events))
+        /// {
+        ///     _Events.SetCallback(EventName, OnAnimationEvent);
+        ///     _Events.OnEnd = OnAnimationEnded;
+        /// }
+        /// </code>
+        /// </remarks>
+        public bool Events(ref AnimancerEvent.Sequence events)
+        {
+            _EventDispatcher ??= new(this);
+
+            var justInitialized = events == null;
+            if (justInitialized)
+                events = new(_EventDispatcher.Events);
+
+#if UNITY_ASSERTIONS
+            // Normally swapping owners is an error,
+            // but with this method it's fine to swap between event sequences since each caller is responsible for its own.
+            if (Owner != null &&
+                Owner != events &&
+                Owner is not AnimancerEvent.Sequence)
+                AssertOwnership(events);
+            else
+                Owner = events;
+#endif
+
+            _EventDispatcher.SetEvents(events, false);
+            return justInitialized;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Copies the contents of the <see cref="_EventDispatcher"/>.</summary>
+        private void CopyEvents(AnimancerState copyFrom, CloneContext context)
+        {
+            if (copyFrom._EventDispatcher != null)
+            {
+                var original = copyFrom._EventDispatcher.Events;
+                var events = context.GetOrCreateCloneOrOriginal(original);
+                if (events != null)
+                {
+                    _EventDispatcher ??= new(this);
+                    _EventDispatcher.SetEvents(events, true);
+                    return;
+                }
+            }
+
+            _EventDispatcher = null;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Should events be raised on a state which is currently fading out?</summary>
+        /// <remarks>
+        /// Default <c>false</c>.
+        /// <para></para>
+        /// <strong>Documentation:</strong>
+        /// <see href="https://kybernetik.com.au/animancer/docs/manual/events/animancer">
+        /// Animancer Events</see>
+        /// </remarks>
+        public static bool RaiseEventsDuringFadeOut { get; set; }
+
+        /// <summary>Should this state check for events to invoke?</summary>
+        private bool ShouldRaiseEvents
+            => TargetWeight > 0
+            || RaiseEventsDuringFadeOut;
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Checks if any events should be invoked based on the current time of this state.
+        /// </summary>
+        protected internal virtual void UpdateEvents()
+            => _EventDispatcher?.UpdateEvents(ShouldRaiseEvents);
+
+        /// <summary>
+        /// Checks if any events should be invoked on the `parent` and its children recursively.
+        /// </summary>
+        public static void UpdateEventsRecursive(AnimancerState parent)
+            => UpdateEventsRecursive(
+                parent,
+                parent.ShouldRaiseEvents);
+
+        /// <summary>
+        /// Checks if any events should be invoked on the `parent` and its children recursively.
+        /// </summary>
+        public static void UpdateEventsRecursive(AnimancerState parent, bool raiseEvents)
+        {
+            parent._EventDispatcher?.UpdateEvents(raiseEvents);
+
+            for (int i = parent.ChildCount - 1; i >= 0; i--)
+            {
+                var child = parent.GetChild(i);
+                UpdateEventsRecursive(child, raiseEvents && child.Weight > 0);
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Sets the <see cref="NormalizedTime"/> to the <see cref="NormalizedEndTime"/>
+        /// and invokes any remaining <see cref="AnimancerEvent"/>s.
+        /// </summary>
+        public void FinishImmediately()
+        {
+            if (_EventDispatcher != null)
+                _EventDispatcher.FinishImmediately();
+            else
+                NormalizedTime = AnimancerEvent.Sequence.GetDefaultNormalizedEndTime(EffectiveSpeed);
+        }
+
+        /************************************************************************************************************************/
+#if UNITY_ASSERTIONS
+        /************************************************************************************************************************/
+
+        /// <summary>[Assert-Only]
+        /// Returns <c>null</c> if Animancer Events will work properly on this type of state,
+        /// or a message explaining why they might not work.
+        /// </summary>
+        protected internal virtual string UnsupportedEventsMessage
+            => null;
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Assert-Only] An optional reference to the object that owns this state.</summary>
+        public object Owner { get; private set; }
+
+        /************************************************************************************************************************/
+#endif
+        /************************************************************************************************************************/
+
+        /// <summary>[Assert-Conditional]
+        /// Sets the <see cref="Owner"/> and asserts that it wasn't already set to a different object.
+        /// </summary>
+        /// <remarks>This helps detect if multiple scripts attempt to manage the same state.</remarks>
+        [System.Diagnostics.Conditional(Strings.Assertions)]
+        public void AssertOwnership(object owner)
+        {
+#if UNITY_ASSERTIONS
+            if (Owner == owner)
+                return;
+
+            if (Owner != null)
+            {
+                Debug.LogError(
+                    $"Multiple objects have asserted ownership over the state '{ToString()}':" +
+                    $"\n• Old Owner: {AnimancerUtilities.ToStringOrNull(Owner)}" +
+                    $"\n• New Owner: {AnimancerUtilities.ToStringOrNull(owner)}" +
+                    $"\n• State: {GetPath()}" +
+                    $"\n• Graph: {Graph?.GetDescription("\n• ")}",
+                    Graph?.Component as Object);
+            }
+
+            Owner = owner;
+#endif
+        }
+
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/Events/AnimancerState.Events.cs.meta

@@ -0,0 +1,13 @@
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Packages/com.kybernetik.animancer/Runtime/Core/Events/Invokables.meta

@@ -0,0 +1,8 @@
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Packages/com.kybernetik.animancer/Runtime/Core/Events/Invokables/AnimancerEvent.Parameter.cs

@@ -0,0 +1,64 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using UnityEngine;
+
+namespace Animancer
+{
+    /// https://kybernetik.com.au/animancer/api/Animancer/AnimancerEvent
+    partial struct AnimancerEvent
+    {
+        /// <summary>A non-generic interface for <see cref="Parameter{T}"/>.</summary>
+        /// https://kybernetik.com.au/animancer/api/Animancer/IParameter
+        public interface IParameter
+        {
+            /************************************************************************************************************************/
+
+            /// <summary>The parameter value.</summary>
+            object Value { get; set; }
+
+            /************************************************************************************************************************/
+        }
+
+        /// <summary>
+        /// Base class for <see cref="IInvokable"/>s which assign the <see cref="CurrentParameter"/>.
+        /// </summary>
+        /// <remarks>
+        /// Inherit from <see cref="ParameterBoxed{T}"/>
+        /// instead of this if <typeparamref name="T"/> is a value type to avoid repeated boxing costs.
+        /// </remarks>
+        /// https://kybernetik.com.au/animancer/api/Animancer/Parameter_1
+        public abstract class Parameter<T> :
+            IParameter,
+            IInvokable
+        {
+            /************************************************************************************************************************/
+
+            [SerializeField]
+            private T _Value;
+
+            /// <summary>[<see cref="SerializeField"/>] The serialized <typeparamref name="T"/>.</summary>
+            public virtual T Value
+            {
+                get => _Value;
+                set => _Value = value;
+            }
+
+            /// <inheritdoc/>
+            object IParameter.Value
+            {
+                get => _Value;
+                set => _Value = (T)value;
+            }
+
+            /// <inheritdoc/>
+            public virtual void Invoke()
+            {
+                CurrentParameter = _Value;
+                Current.InvokeBoundCallback();
+            }
+
+            /************************************************************************************************************************/
+        }
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/Events/Invokables/AnimancerEvent.Parameter.cs.meta

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Packages/com.kybernetik.animancer/Runtime/Core/Events/Invokables/AnimancerEvent.ParameterBoxed.cs

@@ -0,0 +1,68 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using UnityEngine;
+
+namespace Animancer
+{
+    /// https://kybernetik.com.au/animancer/api/Animancer/AnimancerEvent
+    partial struct AnimancerEvent
+    {
+        /// <summary>
+        /// An <see cref="Parameter{T}"/>s which internally boxes value types
+        /// to avoid re-boxing them every <see cref="Invoke"/>.
+        /// </summary>
+        /// https://kybernetik.com.au/animancer/api/Animancer/ParameterBoxed_1
+        public abstract class ParameterBoxed<T> : Parameter<T>,
+        IParameter
+#if UNITY_EDITOR
+            , ISerializationCallbackReceiver
+#endif
+            where T : struct
+        {
+            /************************************************************************************************************************/
+
+            private object _Boxed;
+
+            /// <inheritdoc/>
+            public override T Value
+            {
+                get => base.Value;
+                set
+                {
+                    base.Value = value;
+                    _Boxed = null;
+                }
+            }
+
+            /// <inheritdoc/>
+            object IParameter.Value
+            {
+                get => Value;
+                set => Value = (T)value;
+            }
+
+            /// <inheritdoc/>
+            public override void Invoke()
+            {
+                CurrentParameter = _Boxed ??= base.Value;
+                Current.InvokeBoundCallback();
+            }
+
+            /************************************************************************************************************************/
+#if UNITY_EDITOR
+            /************************************************************************************************************************/
+
+            /// <inheritdoc/>
+            void ISerializationCallbackReceiver.OnBeforeSerialize() { }
+
+            /// <inheritdoc/>
+            void ISerializationCallbackReceiver.OnAfterDeserialize()
+                => _Boxed = null;
+
+            /************************************************************************************************************************/
+#endif
+            /************************************************************************************************************************/
+        }
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/Events/Invokables/AnimancerEvent.ParameterBoxed.cs.meta

@@ -0,0 +1,11 @@
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Packages/com.kybernetik.animancer/Runtime/Core/Events/Invokables/AnimancerEventParameterTypes.cs

@@ -0,0 +1,56 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System;
+
+namespace Animancer
+{
+    /// https://kybernetik.com.au/animancer/api/Animancer/AnimancerEvent
+    partial struct AnimancerEvent
+    {
+        /************************************************************************************************************************/
+        // Reference Types.
+        /************************************************************************************************************************/
+
+        /// <summary>An <see cref="Parameter{T}"/> for <see cref="UnityEngine.Object"/>.</summary>
+        /// https://kybernetik.com.au/animancer/api/Animancer/ParameterObject
+        [Serializable]
+        public class ParameterObject : Parameter<UnityEngine.Object> { }
+
+        /// <summary>An <see cref="Parameter{T}"/> for <see cref="string"/>.</summary>
+        /// https://kybernetik.com.au/animancer/api/Animancer/ParameterString
+        [Serializable]
+        public class ParameterString : Parameter<string> { }
+
+        /************************************************************************************************************************/
+        // Value Types.
+        /************************************************************************************************************************/
+
+        /// <summary>An <see cref="Parameter{T}"/> for <see cref="bool"/>.</summary>
+        /// https://kybernetik.com.au/animancer/api/Animancer/ParameterBool
+        [Serializable]
+        public class ParameterBool : ParameterBoxed<bool> { }
+
+        /// <summary>An <see cref="Parameter{T}"/> for <see cref="double"/>.</summary>
+        /// https://kybernetik.com.au/animancer/api/Animancer/ParameterDouble
+        [Serializable]
+        public class ParameterDouble : ParameterBoxed<double> { }
+
+        /// <summary>An <see cref="Parameter{T}"/> for <see cref="float"/>.</summary>
+        /// https://kybernetik.com.au/animancer/api/Animancer/ParameterFloat
+        [Serializable]
+        public class ParameterFloat : ParameterBoxed<float> { }
+
+        /// <summary>An <see cref="Parameter{T}"/> for <see cref="int"/>.</summary>
+        /// https://kybernetik.com.au/animancer/api/Animancer/ParameterInt
+        [Serializable]
+        public class ParameterInt : ParameterBoxed<int> { }
+
+        /// <summary>An <see cref="Parameter{T}"/> for <see cref="long"/>.</summary>
+        /// https://kybernetik.com.au/animancer/api/Animancer/ParameterLong
+        [Serializable]
+        public class ParameterLong : ParameterBoxed<long> { }
+
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/Events/Invokables/AnimancerEventParameterTypes.cs.meta

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Packages/com.kybernetik.animancer/Runtime/Core/Events/Invokables/UltEvent.cs

@@ -0,0 +1,16 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+#if ULT_EVENTS
+
+using System;
+
+namespace Animancer
+{
+    /// <summary>An <see cref="UltEvents.UltEvent"/> which implements <see cref="IInvokable"/>.</summary>
+    /// https://kybernetik.com.au/animancer/api/Animancer/UltEvent
+    [Serializable]
+    public class UltEvent : UltEvents.UltEvent, IInvokable { }
+}
+
+#endif
+

Packages/com.kybernetik.animancer/Runtime/Core/Events/Invokables/UltEvent.cs.meta

@@ -0,0 +1,13 @@
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+timeCreated: 1515060256
+licenseType: Store
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Packages/com.kybernetik.animancer/Runtime/Core/Events/Invokables/UnityEvent.cs

@@ -0,0 +1,12 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System;
+
+namespace Animancer
+{
+    /// <summary>A <see cref="UnityEngine.Events.UnityEvent"/> which implements <see cref="IInvokable"/>.</summary>
+    /// https://kybernetik.com.au/animancer/api/Animancer/UnityEvent
+    [Serializable]
+    public class UnityEvent : UnityEngine.Events.UnityEvent, IInvokable { }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/Events/Invokables/UnityEvent.cs.meta

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+timeCreated: 1515060256
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+  assetBundleVariant: 

Packages/com.kybernetik.animancer/Runtime/Core/Events/NamedEventDictionary.cs

@@ -0,0 +1,334 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System;
+using System.Collections;
+using System.Collections.Generic;
+
+namespace Animancer
+{
+    /// <summary>A dictionary which maps event names to callbacks.</summary>
+    /// <remarks>
+    /// <strong>Documentation:</strong>
+    /// <see href="https://kybernetik.com.au/animancer/docs/manual/events/animancer">
+    /// Animancer Events</see>
+    /// </remarks>
+    /// https://kybernetik.com.au/animancer/api/Animancer/NamedEventDictionary
+    public class NamedEventDictionary : IDictionary<StringReference, Action>
+    {
+        /************************************************************************************************************************/
+
+        private readonly Dictionary<StringReference, Action>
+            Dictionary = new();
+
+        /************************************************************************************************************************/
+
+        /// <summary>The number of items in this dictionary.</summary>
+        public int Count
+            => Dictionary.Count;
+
+        /************************************************************************************************************************/
+        #region Access
+        /************************************************************************************************************************/
+
+        /// <summary>Accesses a callback in this dictionary.</summary>
+        public Action this[StringReference name]
+        {
+            get => Dictionary[name];
+            set
+            {
+                AssertNotEndEvent(name);
+                Dictionary[name] = value;
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Returns the callback registered using the `name`.</summary>
+        /// <remarks>Returns <c>null</c> if nothing was registered.</remarks>
+        public Action Get(StringReference name)
+            => Dictionary.Get(name);
+
+        /// <summary>Registers the callback using the `name`, replacing anything previously registered.</summary>
+        public void Set(StringReference name, Action callback)
+        {
+            AssertNotEndEvent(name);
+            Dictionary[name] = callback;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Are any callbacks registered for the `name`?</summary>
+        /// <remarks>To get the registered callbacks at the same time, use <see cref="TryGetValue"/> instead.</remarks>
+        public bool ContainsKey(StringReference name)
+            => Dictionary.ContainsKey(name);
+
+        /************************************************************************************************************************/
+
+        /// <summary>Tries to get the `callback` registered with the `name` and returns <c>true</c> if successful.</summary>
+        public bool TryGetValue(StringReference name, out Action callback)
+            => Dictionary.TryGetValue(name, out callback);
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Add
+        /************************************************************************************************************************/
+
+        /// <summary>Adds the `callback` to any existing ones registered with the `name`.</summary>
+        /// <remarks>
+        /// If you want an exception to be thrown if something is already registered with the `name`,
+        /// use <see cref="AddNew(StringReference, Action)"/> instead.
+        /// </remarks>
+        public void AddTo(StringReference name, Action callback)
+        {
+            AssertNotEndEvent(name);
+
+            if (Dictionary.TryGetValue(name, out var existing))
+                callback = existing + callback;
+
+            Dictionary[name] = callback;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Registers the `callback` with the `name` but throws an <see cref="ArgumentException"/>
+        /// if something was already registered with the same `name`.
+        /// </summary>
+        /// <remarks>
+        /// This matches the standard <see cref="Dictionary{TKey, TValue}.Add(TKey, TValue)"/> behaviour,
+        /// unlike <see cref="AddTo(StringReference, Action)"/>.
+        /// </remarks>
+        public void AddNew(StringReference name, Action callback)
+        {
+            AssertNotEndEvent(name);
+            Dictionary.Add(name, callback);
+        }
+
+        void IDictionary<StringReference, Action>.Add(StringReference name, Action callback)
+            => AddNew(name, callback);
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Adds the `callback` to any existing ones registered with the `name`.
+        /// <para></para>
+        /// It will be invoked using <see cref="AnimancerEvent.GetCurrentParameter{T}"/> to get its parameter.
+        /// </summary>
+        /// <remarks>
+        /// If you want an exception to be thrown if something is already registered with the `name`,
+        /// use <see cref="AddNew{T}(StringReference, Action{T})"/> instead.
+        /// <para></para>
+        /// If <typeparamref name="T"/> is <see cref="string"/>,
+        /// consider using <see cref="AddTo(StringReference, Action{string})"/> instead of this overload.
+        /// <para></para>
+        /// If you want to later remove the `callback`,
+        /// you need to store and remove the returned <see cref="Action"/>.
+        /// </remarks>
+        public Action AddTo<T>(StringReference name, Action<T> callback)
+        {
+            AssertNotEndEvent(name);
+            var parametized = AnimancerEvent.Parametize(callback);
+
+            if (Dictionary.TryGetValue(name, out var existing))
+                parametized = existing + parametized;
+
+            Dictionary[name] = parametized;
+
+            return parametized;
+        }
+
+        /// <summary>
+        /// Registers the `callback` with the `name` but throws an <see cref="ArgumentException"/>
+        /// if something was already registered with the same `name`.
+        /// <para></para>
+        /// It will be invoked using <see cref="AnimancerEvent.GetCurrentParameter{T}"/> to get its parameter.
+        /// </summary>
+        /// <remarks>
+        /// This matches the standard <see cref="Dictionary{TKey, TValue}.Add(TKey, TValue)"/> behaviour,
+        /// unlike <see cref="AddTo{T}(StringReference, Action{T})"/>.
+        /// If <typeparamref name="T"/> is <see cref="string"/>,
+        /// consider using <see cref="AddTo(StringReference, Action{string})"/> instead of this overload.
+        /// <para></para>
+        /// If you want to later remove the `callback`,
+        /// you need to store and remove the returned <see cref="Action"/>.
+        /// </remarks>
+        public Action AddNew<T>(StringReference name, Action<T> callback)
+        {
+            AssertNotEndEvent(name);
+            var parametized = AnimancerEvent.Parametize(callback);
+            Dictionary.Add(name, parametized);
+            return parametized;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Adds the `callback` to any existing ones registered with the `name`.
+        /// <para></para>
+        /// It will be invoked using <see cref="object.ToString"/> on the
+        /// <see cref="AnimancerEvent.CurrentParameter"/>.
+        /// </summary>
+        /// <remarks>
+        /// If you want an exception to be thrown if something is already registered with the `name`,
+        /// use <see cref="AddNew{T}(StringReference, Action{T})"/> instead.
+        /// <para></para>
+        /// If you want to later remove the `callback`,
+        /// you need to store and remove the returned <see cref="Action"/>.
+        /// </remarks>
+        public Action AddTo(StringReference name, Action<string> callback)
+        {
+            AssertNotEndEvent(name);
+            var parametized = AnimancerEvent.Parametize(callback);
+
+            if (Dictionary.TryGetValue(name, out var existing))
+                parametized = existing + parametized;
+
+            Dictionary[name] = parametized;
+            return parametized;
+        }
+
+        /// <summary>
+        /// Registers the `callback` with the `name` but throws an <see cref="ArgumentException"/>
+        /// if something was already registered with the same `name`.
+        /// <para></para>
+        /// It will be invoked using <see cref="object.ToString"/> on the
+        /// <see cref="AnimancerEvent.CurrentParameter"/>.
+        /// </summary>
+        /// <remarks>
+        /// This matches the standard <see cref="Dictionary{TKey, TValue}.Add(TKey, TValue)"/>
+        /// behaviour, unlike <see cref="AddTo(StringReference, Action{string})"/>.
+        /// <para></para>
+        /// If you want to later remove the `callback`,
+        /// you need to store and remove the returned <see cref="Action"/>.
+        /// </remarks>
+        public Action AddNew(StringReference name, Action<string> callback)
+        {
+            AssertNotEndEvent(name);
+            var parametized = AnimancerEvent.Parametize(callback);
+            Dictionary.Add(name, parametized);
+            return parametized;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Assert-Conditional]
+        /// Throws an <see cref="ArgumentException"/> if the `name` is the <see cref="AnimancerEvent.EndEventName"/>.
+        /// </summary>
+        /// <remarks>
+        /// In order to minimise the performance cost of End Events when there isn't one,
+        /// the <see cref="AnimancerEvent.Dispatcher"/> won't even check the end time
+        /// when there is no <see cref="AnimancerEvent.Sequence.OnEnd"/> callback.
+        /// <para></para>
+        /// That means if a callback was bound to the <see cref="AnimancerEvent.EndEventName"/>
+        /// it would be triggered by any state with an <see cref="AnimancerEvent.Sequence.OnEnd"/>
+        /// callback, but not by states without one. That would be very counterintuitive so it isn't allowed.
+        /// </remarks>
+        /// <exception cref="ArgumentException"/>
+        [System.Diagnostics.Conditional(Strings.Assertions)]
+        public static void AssertNotEndEvent(StringReference name)
+        {
+            if (name == AnimancerEvent.EndEventName)
+                throw new ArgumentException(
+                    $"Binding event callbacks to the " +
+                    $"{nameof(AnimancerEvent)}.{nameof(AnimancerEvent.EndEventName)}" +
+                    $" is not supported for performance optimization reasons. See the documentation of" +
+                    $" {nameof(NamedEventDictionary)}.{nameof(AssertNotEndEvent)} for more details.",
+                    nameof(name));
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Remove
+        /************************************************************************************************************************/
+
+        /// <summary>Removes all callbacks registered with the `name`.</summary>
+        public bool Remove(StringReference name)
+            => Dictionary.Remove(name);
+
+        /// <summary>Removes a specific `callback` registered with the `name`.</summary>
+        public bool Remove(StringReference name, Action callback)
+        {
+            if (!Dictionary.TryGetValue(name, out var callbacks))
+                return false;
+
+            if (callbacks == callback)
+                Dictionary.Remove(name);
+            else
+                Dictionary[name] = callbacks - callback;
+
+            return true;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Removes everything from this dictionary.</summary>
+        public void Clear()
+            => Dictionary.Clear();
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Enumeration
+        /************************************************************************************************************************/
+
+        /// <summary>Returns an enumerator to go through every item in this dictionary.</summary>
+        public Dictionary<StringReference, Action>.Enumerator GetEnumerator()
+            => Dictionary.GetEnumerator();
+
+        IEnumerator<KeyValuePair<StringReference, Action>>
+            IEnumerable<KeyValuePair<StringReference, Action>>.GetEnumerator()
+            => Dictionary.GetEnumerator();
+
+        IEnumerator IEnumerable.GetEnumerator()
+            => Dictionary.GetEnumerator();
+
+        /************************************************************************************************************************/
+
+        /// <summary>The names in this dictionary.</summary>
+        public Dictionary<StringReference, Action>.KeyCollection Keys
+            => Dictionary.Keys;
+
+        /// <summary>The values in this dictionary.</summary>
+        public Dictionary<StringReference, Action>.ValueCollection Values
+            => Dictionary.Values;
+
+        ICollection<StringReference> IDictionary<StringReference, Action>.Keys
+            => Dictionary.Keys;
+
+        ICollection<Action> IDictionary<StringReference, Action>.Values
+            => Dictionary.Values;
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Explicit Dictionary Wrappers
+        /************************************************************************************************************************/
+
+        void ICollection<KeyValuePair<StringReference, Action>>
+            .Add(KeyValuePair<StringReference, Action> item)
+            => AddTo(item.Key, item.Value);
+
+        bool ICollection<KeyValuePair<StringReference, Action>>
+            .Contains(KeyValuePair<StringReference, Action> item)
+            => ((ICollection<KeyValuePair<StringReference, Action>>)Dictionary).Contains(item);
+
+        void ICollection<KeyValuePair<StringReference, Action>>
+            .CopyTo(KeyValuePair<StringReference, Action>[] array,
+            int arrayIndex)
+            => ((ICollection<KeyValuePair<StringReference, Action>>)Dictionary).CopyTo(array, arrayIndex);
+
+        bool ICollection<KeyValuePair<StringReference, Action>>
+            .Remove(KeyValuePair<StringReference, Action> item)
+            => Dictionary.Remove(item.Key);
+
+        bool ICollection<KeyValuePair<StringReference, Action>>.IsReadOnly
+            => false;
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/Events/NamedEventDictionary.cs.meta

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Packages/com.kybernetik.animancer/Runtime/Core/Fades.meta

@@ -0,0 +1,8 @@
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Packages/com.kybernetik.animancer/Runtime/Core/Fades/FadeGroup.cs

@@ -0,0 +1,733 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+#if UNITY_ASSERTIONS
+//#define ANIMANCER_ASSERT_FADE_GRAPH
+#endif
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+using UnityEngine;
+using UnityEngine.Playables;
+using Object = UnityEngine.Object;
+
+namespace Animancer
+{
+    /// <summary>A group of <see cref="AnimancerNode"/>s which are cross-fading.</summary>
+    /// 
+    /// <remarks>
+    /// <strong>Documentation:</strong>
+    /// <see href="https://kybernetik.com.au/animancer/docs/manual/blending/fading/custom">
+    /// Custom Easing</see>
+    /// </remarks>
+    /// 
+    /// https://kybernetik.com.au/animancer/api/Animancer/FadeGroup
+    /// 
+    public partial class FadeGroup : Updatable,
+        ICloneable<FadeGroup>,
+        ICopyable<FadeGroup>,
+        IHasDescription
+    {
+        /************************************************************************************************************************/
+        #region Fields and Properties
+        /************************************************************************************************************************/
+        // Parameters.
+        /************************************************************************************************************************/
+
+        /// <summary>The 0-1 progress of this fade.</summary>
+        public float NormalizedTime { get; set; }
+
+        /// <summary>The <see cref="AnimancerNode.Weight"/> which the <see cref="FadeIn"/> is moving towards.</summary>
+        public float TargetWeight { get; set; }
+
+        /// <summary>The speed at which the <see cref="NormalizedTime"/> increases.</summary>
+        public float NormalizedFadeSpeed { get; set; }
+
+        /// <summary>The speed at which the <see cref="AnimancerNode.Weight"/>s change.</summary>
+        public float FadeSpeed
+        {
+            get => FadeDistance * NormalizedFadeSpeed;
+            set => NormalizedFadeSpeed = value / FadeDistance;
+        }
+
+        /// <summary>The distance from the starting weight to the <see cref="TargetWeight"/>.</summary>
+        public float FadeDistance
+            => Math.Abs(TargetWeight - FadeIn.StartingWeight);
+
+        /// <summary>The total amount of time this fade will take to complete (in seconds).</summary>
+        public float FadeDuration
+        {
+            get => NormalizedFadeSpeed != 0
+                ? 1 / NormalizedFadeSpeed
+                : float.PositiveInfinity;
+            set => NormalizedFadeSpeed = value != 0
+                ? 1 / value
+                : float.PositiveInfinity;
+        }
+
+        /// <summary>The remaining amount of time this fade will take to complete (in seconds).</summary>
+        public float RemainingFadeDuration
+        {
+            get => NormalizedFadeSpeed != 0
+                ? (1 - NormalizedTime) / NormalizedFadeSpeed
+                : float.PositiveInfinity;
+            set => NormalizedFadeSpeed = value != 0
+                ? (1 - NormalizedTime) / value
+                : float.PositiveInfinity;
+        }
+
+        /************************************************************************************************************************/
+        // Parent.
+        /************************************************************************************************************************/
+
+        /// <summary>The <see cref="AnimancerNodeBase.Graph"/>.</summary>
+        public AnimancerGraph Graph { get; private set; }
+
+        /// <summary>The <see cref="AnimancerNodeBase.Graph"/>.</summary>
+        public AnimancerNodeBase Parent { get; private set; }
+
+        /// <summary>The <see cref="AnimancerNodeBase.Playable"/> of the <see cref="Parent"/>.</summary>
+        public Playable ParentPlayable { get; private set; }
+
+        /// <summary>Should the fading nodes always be connected to the <see cref="ParentPlayable"/>?</summary>
+        public bool KeepChildrenConnected { get; private set; }
+
+        /************************************************************************************************************************/
+        // Nodes.
+        /************************************************************************************************************************/
+
+        /// <summary>The node which is fading towards the <see cref="TargetWeight"/>.</summary>
+        public NodeWeight FadeIn { get; private set; }
+
+        internal readonly List<NodeWeight> FadeOutInternal = new();
+
+        /// <summary>The nodes which are fading out.</summary>
+        public IReadOnlyList<NodeWeight> FadeOut => FadeOutInternal;
+
+        /************************************************************************************************************************/
+        // Custom Fade.
+        /************************************************************************************************************************/
+
+        private Func<float, float> _Easing;
+
+        /// <summary>[Pro-Only] An optional function for modifying the fade curve.</summary>
+        /// <remarks>
+        /// The <see cref="NormalizedTime"/> is passed in and the return value is multiplied by the
+        /// <see cref="TargetWeight"/> to set the <see cref="AnimancerNode.Weight"/> of the <see cref="FadeIn"/>.
+        /// <para></para>
+        /// <see cref="Animancer.Easing"/> has various common functions that could be used here.
+        /// <para></para>
+        /// Note that the <see cref="AnimancerNode.FadeGroup"/> may be <c>null</c>
+        /// right after playing something if it was already playing, so
+        /// <see cref="FadeGroupExtensions.SetEasing(FadeGroup, Easing.Function)"/>
+        /// <see cref="FadeGroupExtensions.SetEasing(FadeGroup, Func{float, float})"/>
+        /// can be used to avoid needing to null-check it.
+        /// <para></para>
+        /// <em>Animancer Lite ignores this property in runtime builds.</em>
+        /// </remarks>
+        public Func<float, float> Easing
+        {
+            get => _Easing;
+            set
+            {
+                _Easing = value;
+                AssertNormalizedBounds(value, nameof(Easing));
+            }
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Initialization
+        /************************************************************************************************************************/
+
+        /// <summary>Assigns the target nodes that will be faded.</summary>
+        public void SetNodes(
+            AnimancerNode parent,
+            AnimancerNode fadeIn,
+            IReadOnlyList<AnimancerNode> fadeOut,
+            bool keepChildrenConnected)
+        {
+            Parent = parent;
+            Graph = parent.Graph;
+            ParentPlayable = parent.Playable;
+            KeepChildrenConnected = keepChildrenConnected;
+
+            FadeIn = new(fadeIn);
+
+            if (fadeIn.FadeGroup != this)
+                fadeIn.FadeGroup = this;
+
+            var count = fadeOut.Count;
+            for (int i = 0; i < count; i++)
+            {
+                var node = fadeOut[i];
+                if (node != fadeIn)
+                {
+                    FadeOutInternal.Add(new(node));
+
+                    if (node.FadeGroup != this)
+                        node.FadeGroup = this;
+                }
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Assigns the <see cref="FadeIn"/> with no <see cref="FadeOut"/>.</summary>
+        public void SetFadeIn(AnimancerNode fadeIn)
+        {
+            Parent = fadeIn.Parent;
+            if (Parent != null)
+            {
+                Graph = fadeIn.Graph;
+                ParentPlayable = Parent.Playable;
+                KeepChildrenConnected = Parent.KeepChildrenConnected;
+            }
+
+            FadeIn = new(fadeIn);
+            fadeIn.FadeGroup = this;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Adds a node to the <see cref="FadeOut"/> list.</summary>
+        public void AddFadeOut(AnimancerNode fadeOut)
+        {
+            FadeOutInternal.Add(new(fadeOut));
+            fadeOut.FadeGroup = this;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Sets the starting values and registers this fade to be updated.</summary>
+        public void StartFade(
+            float targetWeight,
+            float normalizedFadeSpeed)
+        {
+            NormalizedTime = 0;
+            TargetWeight = targetWeight;
+            NormalizedFadeSpeed = normalizedFadeSpeed;
+
+            StartFade();
+        }
+
+        /// <summary>Registers this fade to be updated.</summary>
+        public void StartFade()
+        {
+            Graph?.RequirePreUpdate(this);
+
+            FadeIn.Node?.OnStartFade();
+            for (int i = FadeOutInternal.Count - 1; i >= 0; i--)
+                FadeOutInternal[i].Node.OnStartFade();
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Queries
+        /************************************************************************************************************************/
+
+        /// <summary>Should this fade continue?</summary>
+        public bool IsValid
+            => NormalizedFadeSpeed > 0;
+
+        /************************************************************************************************************************/
+
+        /// <summary>Does this fade affect the `node`?</summary>
+        public bool Contains(AnimancerNode node)
+        {
+            if (FadeIn.Node == node)
+                return true;
+
+            for (int i = 0; i < FadeOutInternal.Count; i++)
+                if (FadeOutInternal[i].Node == node)
+                    return true;
+
+            return false;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Returns the <see cref="TargetWeight"/> if the `node` is the <see cref="FadeIn"/>.
+        /// Otherwise, returns 0.
+        /// </summary>
+        public float GetTargetWeight(AnimancerNode node)
+        {
+            return FadeIn.Node == node
+                ? TargetWeight
+                : 0;
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Methods
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override void Update()
+        {
+            if (!IsValid)
+            {
+                Cancel();
+                return;
+            }
+
+            AssertGraph();
+
+            NormalizedTime += Math.Abs(AnimancerGraph.DeltaTime * Parent.EffectiveSpeed * NormalizedFadeSpeed);
+
+            if (NormalizedTime < 1)// Fade.
+            {
+                ApplyWeights();
+            }
+            else// End.
+            {
+                Finish();
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Immediately finishes this fade.</summary>
+        public void Finish()
+        {
+            NormalizedTime = 1;
+
+            if (KeepChildrenConnected)
+            {
+                ApplyWeights(1);
+
+                for (int i = FadeOutInternal.Count - 1; i >= 0; i--)
+                    FadeOutInternal[i].Node.StopWithoutWeight();
+
+                if (TargetWeight == 0)
+                    FadeIn.Node?.StopWithoutWeight();
+            }
+            else// Disconnect all faded out nodes and only apply the faded in weight.
+            {
+                for (int i = FadeOutInternal.Count - 1; i >= 0; i--)
+                    StopAndDisconnect(FadeOutInternal[i].Node);
+
+                FadeOutInternal.Clear();
+
+                if (FadeIn.Node != null)
+                {
+                    if (TargetWeight > 0)
+                        FadeIn.Node.SetWeight(TargetWeight);
+                    else
+                        StopAndDisconnect(FadeIn.Node);
+                }
+            }
+
+            Cancel();
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Recalculates the node weights based on the <see cref="NormalizedTime"/>.
+        /// </summary>
+        public void ApplyWeights()
+        {
+            if (NormalizedTime < 1)// Fade.
+            {
+                var progress = NormalizedTime;
+                if (_Easing != null)
+                    progress = _Easing(progress);
+
+                ApplyWeights(progress);
+            }
+            else// End.
+            {
+                Finish();
+            }
+        }
+
+        private void ApplyWeights(float progress)
+        {
+            // Move FadeIn towards target (usually 1 or 0).
+
+            FadeIn.Node?.SetWeight(Mathf.LerpUnclamped(FadeIn.StartingWeight, TargetWeight, progress));
+
+            // Move FadeOut towards 0.
+
+            progress = 1 - progress;
+
+            for (int i = FadeOutInternal.Count - 1; i >= 0; i--)
+            {
+                var node = FadeOutInternal[i];
+                node.Node.SetWeight(node.StartingWeight * progress);
+            }
+        }
+
+        private void StopAndDisconnect(AnimancerNode node)
+        {
+            // Don't InternalClearFade because it's virtual.
+            node._FadeGroup = null;
+            node.Stop();
+        }
+
+        /************************************************************************************************************************/
+
+        private void Release()
+        {
+            NormalizedFadeSpeed = 0;
+            _Easing = null;
+            Graph = null;
+            Parent = null;
+
+            if (FadeIn.Node != null)
+            {
+                FadeIn.Node.InternalClearFade();
+                FadeIn = default;
+            }
+
+            for (int i = FadeOutInternal.Count - 1; i >= 0; i--)
+                FadeOutInternal[i].Node.InternalClearFade();
+            FadeOutInternal.Clear();
+
+            Pool.Instance.Release(this);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Interrupts this fade and releases it to the <see cref="ObjectPool{T}"/>.</summary>
+        public void Cancel()
+        {
+            Graph?.CancelPreUpdate(this);
+            Release();
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Removes the `node` from this <see cref="FadeGroup"/> and returns true if successful.</summary>
+        public bool Remove(AnimancerNode node)
+        {
+            if (FadeIn.Node == node)
+            {
+                FadeIn = new(null, FadeIn.StartingWeight);
+
+                if (FadeOutInternal.Count == 0)
+                    Cancel();
+
+                node.InternalClearFade();
+
+                return true;
+            }
+
+            for (int i = FadeOutInternal.Count - 1; i >= 0; i--)
+            {
+                if (FadeOutInternal[i].Node == node)
+                {
+                    FadeOutInternal.RemoveAt(i);
+
+                    if (FadeIn.Node == null && FadeOutInternal.Count == 0)
+                        Cancel();
+
+                    node.InternalClearFade();
+
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public virtual void AppendDescription(StringBuilder text, string separator = "\n")
+        {
+            text.Append(GetType().FullName);
+
+            if (!IsValid)
+            {
+                text.Append("(Cancelled)");
+                return;
+            }
+
+            if (!separator.StartsWithNewLine())
+                separator = "\n" + separator;
+
+            text.AppendField(separator, nameof(NormalizedTime), NormalizedTime);
+            text.AppendField(separator, nameof(NormalizedFadeSpeed), NormalizedFadeSpeed);
+            text.AppendField(separator, nameof(Easing), _Easing?.ToStringDetailed());
+
+            text.Append(separator).Append($"{nameof(FadeIn)}: ");
+            FadeIn.AppendDescription(text, TargetWeight);
+
+            text.AppendField(separator, nameof(FadeOut), FadeOutInternal.Count);
+            for (int i = 0; i < FadeOutInternal.Count; i++)
+            {
+                text.Append(separator)
+                    .Append(Strings.Indent);
+                FadeOutInternal[i].AppendDescription(text, 0);
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Assert-Conditional] Checks <see cref="OptionalWarning.FadeEasingBounds"/>.</summary>
+        [System.Diagnostics.Conditional(Strings.Assertions)]
+        public static void AssertNormalizedBounds(Func<float, float> easing, string name = "function")
+        {
+#if UNITY_ASSERTIONS
+            if (easing != null && OptionalWarning.FadeEasingBounds.IsEnabled())
+            {
+                if (easing(0) != 0)
+                    OptionalWarning.FadeEasingBounds.Log(name + "(0) != 0.");
+
+                if (easing(1) != 1)
+                    OptionalWarning.FadeEasingBounds.Log(name + "(1) != 1.");
+            }
+#endif
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Cloning
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public virtual FadeGroup Clone(CloneContext context)
+        {
+            if (!IsValid)
+                return null;
+
+            var clone = new FadeGroup();
+            clone.CopyFrom(this, context);
+            return clone;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public virtual void CopyFrom(FadeGroup copyFrom, CloneContext context)
+        {
+            CopyNodesFrom(copyFrom, context);
+
+            var node = FadeIn.Node;
+            if (node == null)
+            {
+                if (FadeOut.Count == 0)
+                    return;
+
+                node = FadeOut[0].Node;
+            }
+
+            ChangeParent(node);
+            CopyDetailsFrom(copyFrom);
+        }
+
+        /************************************************************************************************************************/
+
+        private void CopyNodesFrom(FadeGroup copyFrom, CloneContext context)
+        {
+            FadeIn = new(copyFrom.FadeIn, context);
+            FadeIn.Node.FadeGroup = this;
+
+            FadeOutInternal.Clear();
+
+            var count = copyFrom.FadeOutInternal.Count;
+            for (int i = 0; i < count; i++)
+            {
+                var nodeWeight = new NodeWeight(copyFrom.FadeOutInternal[i], context);
+                if (nodeWeight.Node != null)
+                {
+                    FadeOutInternal.Add(nodeWeight);
+                    nodeWeight.Node.FadeGroup = this;
+                }
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        internal void ChangeParent(AnimancerNode child)
+        {
+            var parent = child.Parent;
+            if (Parent == parent)
+                return;
+
+            Parent = parent;
+            if (Parent != null)
+            {
+                ParentPlayable = Parent.Playable;
+                KeepChildrenConnected = Parent.KeepChildrenConnected;
+
+                ChangeGraph(child.Graph);
+
+                _AssertGraphNextFrame = true;
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        internal void ChangeGraph(AnimancerGraph graph)
+        {
+            if (Graph == graph)
+                return;
+
+            Graph?.CancelPreUpdate(this);
+            Graph = graph;
+            Graph?.RequirePreUpdate(this);
+
+            _AssertGraphNextFrame = true;
+        }
+
+        /************************************************************************************************************************/
+
+        private bool _AssertGraphNextFrame;
+
+        private void AssertGraph()
+        {
+            if (!_AssertGraphNextFrame)
+                return;
+
+            _AssertGraphNextFrame = false;
+
+            if (FadeIn.Node != null && !AssertNode(FadeIn.Node))
+                return;
+
+            for (int i = 0; i < FadeOutInternal.Count; i++)
+                if (!AssertNode(FadeOutInternal[i].Node))
+                    return;
+        }
+
+        private bool AssertNode(AnimancerNode node)
+        {
+            string propertyName;
+            string nodeValue, myValue;
+            if (node.Graph == Graph)
+            {
+                if (node.Parent == Parent)
+                    return true;
+
+                propertyName = nameof(node.Parent);
+                nodeValue = AnimancerUtilities.ToStringOrNull(node.Parent);
+                myValue = AnimancerUtilities.ToStringOrNull(Parent);
+            }
+            else
+            {
+                propertyName = nameof(node.Graph);
+                nodeValue = AnimancerUtilities.ToStringOrNull(node.Graph);
+                myValue = AnimancerUtilities.ToStringOrNull(Graph);
+            }
+
+            var graph = Graph ?? node.Graph;
+            Debug.LogWarning(
+                $"{nameof(AnimancerNode)}.{propertyName} doesn't match {nameof(FadeGroup)}.{propertyName}." +
+                $"\n• Node: {node.GetPath()}" +
+                $"\n• Node.{propertyName}: {nodeValue}" +
+                $"\n• This.{propertyName}: {myValue}" +
+                $"\n• Graph: {graph?.GetDescription("\n• ")}");
+
+            return false;
+        }
+
+        /************************************************************************************************************************/
+
+        private void CopyDetailsFrom(FadeGroup copyFrom)
+        {
+            NormalizedTime = copyFrom.NormalizedTime;
+            NormalizedFadeSpeed = copyFrom.NormalizedFadeSpeed;
+            TargetWeight = copyFrom.TargetWeight;
+            _Easing = copyFrom._Easing;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Creates a clone of this <see cref="FadeGroup"/> for a single target node (`copyTo`).</summary>
+        public FadeGroup CloneForSingleTarget(AnimancerNode copyFrom, AnimancerNode copyTo)
+        {
+            if (!IsValid)
+                return null;
+
+            var clone = Pool.Instance.Acquire();
+
+            if (copyFrom == FadeIn.Node)
+            {
+                clone.FadeIn = new(copyTo, FadeIn.StartingWeight);
+            }
+            else
+            {
+                for (int i = 0; i < FadeOutInternal.Count; i++)
+                {
+                    var fadeOut = FadeOutInternal[i];
+                    if (fadeOut.Node == copyFrom)
+                    {
+                        clone.FadeOutInternal.Add(new(copyTo, fadeOut.StartingWeight));
+                        goto CopyDetails;
+                    }
+                }
+
+                return null;
+            }
+
+            CopyDetails:
+            clone.ChangeParent(copyTo);
+            clone.CopyDetailsFrom(this);
+            clone.StartFade();
+
+            return clone;
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Pooling
+        /************************************************************************************************************************/
+
+        /// <summary>An <see cref="ObjectPool{T}"/> for <see cref="FadeGroup"/>.</summary>
+        /// https://kybernetik.com.au/animancer/api/Animancer/Pool
+        public class Pool : ObjectPool<FadeGroup>
+        {
+            /************************************************************************************************************************/
+
+            /// <summary>Singleton.</summary>
+            public static Pool Instance = new();
+
+            /************************************************************************************************************************/
+
+            /// <inheritdoc/>
+            protected override FadeGroup New()
+                => new();
+
+            /************************************************************************************************************************/
+#if UNITY_ASSERTIONS
+            /************************************************************************************************************************/
+
+            /// <inheritdoc/>
+            public override FadeGroup Acquire()
+            {
+                var fade = base.Acquire();
+                Debug.Assert(fade.FadeIn.Node == null, $"{nameof(fade.FadeIn)} is not null");
+                Debug.Assert(fade.FadeOutInternal.Count == 0, $"{nameof(fade.FadeOutInternal)} is not empty");
+                Debug.Assert(fade.Easing == null, $"{nameof(fade.Easing)} is not null");
+                return fade;
+            }
+
+            /// <inheritdoc/>
+            public override void Release(FadeGroup item)
+            {
+                Debug.Assert(((IUpdatable)item).UpdatableIndex < 0,
+                    $"Releasing {nameof(FadeGroup)} which is still registered for updates.",
+                    item.Graph?.Component as Object);
+
+                base.Release(item);
+            }
+
+            /************************************************************************************************************************/
+#endif
+            /************************************************************************************************************************/
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/Fades/FadeGroup.cs.meta

@@ -0,0 +1,13 @@
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+guid: 185b5c0875be482428a95dd83b291f9c
+timeCreated: 1515048758
+licenseType: Store
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Packages/com.kybernetik.animancer/Runtime/Core/Fades/NodeWeight.cs

@@ -0,0 +1,73 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System.Text;
+
+namespace Animancer
+{
+    /// <summary>An <see cref="AnimancerNode"/> and its <see cref="StartingWeight"/>.</summary>
+    /// https://kybernetik.com.au/animancer/api/Animancer/NodeWeight
+    public readonly struct NodeWeight
+    {
+        /************************************************************************************************************************/
+
+        /// <summary>The <see cref="AnimancerNode"/>.</summary>
+        public readonly AnimancerNode Node;
+
+        /// <summary>The <see cref="AnimancerNode.Weight"/> from when this struct was captured.</summary>
+        public readonly float StartingWeight;
+
+        /************************************************************************************************************************/
+
+        /// <summary>Creates a new <see cref="NodeWeight"/>.</summary>
+        public NodeWeight(AnimancerNode node)
+        {
+            Node = node;
+            StartingWeight = node.Weight;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Creates a new <see cref="NodeWeight"/>.</summary>
+        public NodeWeight(AnimancerNode node, float startingWeight)
+        {
+            Node = node;
+            StartingWeight = startingWeight;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Creates a copy of `copyFrom`.</summary>
+        public NodeWeight(NodeWeight copyFrom, CloneContext context)
+        {
+            Node = context.GetOrCreateCloneOrOriginal(copyFrom.Node);
+            StartingWeight = copyFrom.StartingWeight;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Appends a detailed descrption of this object.</summary>
+        public void AppendDescription(StringBuilder text, float targetWeight)
+        {
+            if (Node == null)
+            {
+                text.Append("Null: ")
+                    .Append(StartingWeight)
+                    .Append(" -> ")
+                    .Append(targetWeight);
+            }
+            else
+            {
+                text.Append(Node.GetPath())
+                    .Append(": ")
+                    .Append(StartingWeight)
+                    .Append(" -> ")
+                    .Append(Node.Weight)
+                    .Append(" -> ")
+                    .Append(targetWeight);
+            }
+        }
+
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/Fades/NodeWeight.cs.meta

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Packages/com.kybernetik.animancer/Runtime/Core/Nodes.meta

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Packages/com.kybernetik.animancer/Runtime/Core/Nodes/AnimancerLayer.cs.meta

@@ -0,0 +1,13 @@
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Packages/com.kybernetik.animancer/Runtime/Core/Nodes/AnimancerNode.cs

@@ -0,0 +1,819 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Runtime.CompilerServices;
+using System.Text;
+using UnityEngine;
+using UnityEngine.Playables;
+using Object = UnityEngine.Object;
+
+namespace Animancer
+{
+    /// <summary>Base class for <see cref="Playable"/> wrapper objects in an <see cref="AnimancerGraph"/>.</summary>
+    /// <remarks>This is the base class of <see cref="AnimancerLayer"/> and <see cref="AnimancerState"/>.</remarks>
+    /// https://kybernetik.com.au/animancer/api/Animancer/AnimancerNode
+    public abstract class AnimancerNode : AnimancerNodeBase,
+        ICopyable<AnimancerNode>,
+        IEnumerable<AnimancerState>,
+        IEnumerator,
+        IHasDescription
+    {
+        /************************************************************************************************************************/
+        #region Playable
+        /************************************************************************************************************************/
+
+#if UNITY_EDITOR
+        /// <summary>[Editor-Only] [Internal] Indicates whether the Inspector details for this node are expanded.</summary>
+        internal bool _IsInspectorExpanded;
+#endif
+
+        /************************************************************************************************************************/
+
+        /// <summary>Creates and assigns the <see cref="Playable"/> managed by this node.</summary>
+        /// <remarks>This method also applies the <see cref="AnimancerNodeBase.Speed"/> if it was set beforehand.</remarks>
+        protected virtual void CreatePlayable()
+        {
+#if UNITY_ASSERTIONS
+            if (Graph == null)
+            {
+                MarkAsUsed(this);
+                throw new InvalidOperationException($"{nameof(AnimancerNode)}.{nameof(Graph)}" +
+                    $" is null when attempting to create its {nameof(Playable)}: {this}" +
+                    $"\nThe {nameof(Graph)} is generally set when you first play a state," +
+                    $" so you probably just need to play it before trying to access it.");
+            }
+
+            if (_Playable.IsValid())
+                Debug.LogWarning($"{nameof(AnimancerNode)}.{nameof(CreatePlayable)}" +
+                    $" was called before destroying the previous {nameof(Playable)}: {this}", Graph?.Component as Object);
+#endif
+
+            CreatePlayable(out _Playable);
+
+#if UNITY_ASSERTIONS
+            if (!_Playable.IsValid())
+                throw new InvalidOperationException(
+                    $"{nameof(AnimancerNode)}.{nameof(CreatePlayable)}" +
+                    $" did not create a valid {nameof(Playable)} for {this}");
+#endif
+
+            if (Speed != 1)
+                _Playable.SetSpeed(Speed);
+        }
+
+        /// <summary>Creates and assigns the <see cref="Playable"/> managed by this node.</summary>
+        protected abstract void CreatePlayable(out Playable playable);
+
+        /************************************************************************************************************************/
+
+        /// <summary>Destroys the <see cref="Playable"/>.</summary>
+        public void DestroyPlayable()
+        {
+            if (_Playable.IsValid())
+                Graph._PlayableGraph.DestroyPlayable(_Playable);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Calls <see cref="DestroyPlayable"/> and <see cref="CreatePlayable()"/>.</summary>
+        public virtual void RecreatePlayable()
+        {
+            DestroyPlayable();
+            CreatePlayable();
+        }
+
+        /// <summary>Calls <see cref="RecreatePlayable"/> on this node and all its children recursively.</summary>
+        public void RecreatePlayableRecursive()
+        {
+            RecreatePlayable();
+
+            for (int i = ChildCount - 1; i >= 0; i--)
+                GetChild(i)?.RecreatePlayableRecursive();
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Copies the details of `copyFrom` into this node, replacing its previous contents.</summary>
+        public virtual void CopyFrom(AnimancerNode copyFrom, CloneContext context)
+        {
+            SetWeight(copyFrom._Weight);
+
+            FadeGroup = context.WillCloneUpdatables
+                ? null
+                : copyFrom.FadeGroup?.CloneForSingleTarget(copyFrom, this);
+
+            Speed = copyFrom.Speed;
+
+            CopyIKFlags(copyFrom);
+
+#if UNITY_ASSERTIONS
+            DebugName = context.GetCloneOrOriginal(copyFrom.DebugName);
+#endif
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Graph
+        /************************************************************************************************************************/
+
+        /// <summary>The index of the port this node is connected to on the parent's <see cref="Playable"/>.</summary>
+        /// <remarks>
+        /// A negative value indicates that it is not assigned to a port.
+        /// <para></para>
+        /// Indices are generally assigned starting from 0, ascending in the order they are connected to their layer.
+        /// They will not usually change unless the <see cref="AnimancerNodeBase.Parent"/> changes or another state on
+        /// the same layer is destroyed so the last state is swapped into its place to avoid shuffling everything down
+        /// to cover the gap.
+        /// <para></para>
+        /// The setter is internal so user defined states cannot set it incorrectly. Ideally,
+        /// <see cref="AnimancerLayer"/> should be able to set the port in its constructor and
+        /// <see cref="AnimancerState.SetParent"/> should also be able to set it, but classes that further inherit from
+        /// there should not be able to change it without properly calling that method.
+        /// </remarks>
+        public int Index { get; internal set; } = int.MinValue;
+
+        /************************************************************************************************************************/
+
+        /// <summary>Creates a new <see cref="AnimancerNode"/>.</summary>
+        protected AnimancerNode()
+        {
+#if UNITY_ASSERTIONS
+            if (TraceConstructor)
+                _ConstructorStackTrace = new(true);
+#endif
+        }
+
+        /************************************************************************************************************************/
+#if UNITY_ASSERTIONS
+        /************************************************************************************************************************/
+
+        /// <summary>[Assert-Only]
+        /// Should a <see cref="System.Diagnostics.StackTrace"/> be captured in the constructor of all new nodes so
+        /// <see cref="OptionalWarning.UnusedNode"/> can include it in the warning if that node ends up being unused?
+        /// </summary>
+        /// <remarks>This has a notable performance cost so it should only be used when trying to identify a problem.</remarks>
+        public static bool TraceConstructor { get; set; }
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Assert-Only]
+        /// The stack trace of the constructor (or null if <see cref="TraceConstructor"/> was false).
+        /// </summary>
+        private System.Diagnostics.StackTrace _ConstructorStackTrace;
+
+        /// <summary>[Assert-Only]
+        /// Returns the stack trace of the constructor (or null if <see cref="TraceConstructor"/> was false).
+        /// </summary>
+        public static System.Diagnostics.StackTrace GetConstructorStackTrace(AnimancerNode node)
+            => node._ConstructorStackTrace;
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Assert-Only] Checks <see cref="OptionalWarning.UnusedNode"/>.</summary>
+        ~AnimancerNode()
+        {
+            if (Graph != null ||
+                Parent != null ||
+                OptionalWarning.UnusedNode.IsDisabled())
+                return;
+
+            // ToString might throw an exception since finalizers arn't run on the main thread.
+            string name = null;
+            try { name = ToString(); }
+            catch { name = GetType().FullName; }
+
+            var message = $"The {nameof(Graph)} of '{name}'" +
+                $" is null during finalization (garbage collection)." +
+                $" This may have been caused by earlier exceptions, but otherwise it probably means" +
+                $" that this node was never used for anything and should not have been created.";
+
+            if (_ConstructorStackTrace != null)
+                message += "\n\nThis node was created at:\n" + _ConstructorStackTrace;
+            else
+                message += $"\n\nEnable {nameof(AnimancerNode)}.{nameof(TraceConstructor)} on startup" +
+                    $" to allow this warning to include the {nameof(System.Diagnostics.StackTrace)}" +
+                    $" of when the node was constructed.";
+
+            OptionalWarning.UnusedNode.Log(message);
+        }
+
+        /************************************************************************************************************************/
+#endif
+        /************************************************************************************************************************/
+
+        /// <summary>Connects the `child`'s <see cref="Playable"/> to this node.</summary>
+        /// <remarks>This method is NOT safe to call if the child was already connected.</remarks>
+        protected internal void ConnectChildUnsafe(int index, AnimancerNode child)
+        {
+#if UNITY_ASSERTIONS
+            if (index < 0)
+            {
+                MarkAsUsed(this);
+                throw new InvalidOperationException(
+                    $"Invalid {nameof(index)} when attempting to connect to its parent:" +
+                    "\n• Child: " + child +
+                    "\n• Parent: " + this);
+            }
+
+            Validate.AssertPlayable(child);
+#endif
+
+            Graph._PlayableGraph.Connect(_Playable, child._Playable, index, child._Weight);
+        }
+
+        /// <summary>Disconnects the <see cref="Playable"/> of the child at the specified `index` from this node.</summary>
+        /// <remarks>This method is safe to call if the child was already disconnected.</remarks>
+        protected void DisconnectChildSafe(int index)
+        {
+            if (_Playable.GetInput(index).IsValid())
+                Graph._PlayableGraph.Disconnect(_Playable, index);
+        }
+
+        /************************************************************************************************************************/
+        // IEnumerator for yielding in a coroutine to wait until animations have stopped.
+        /************************************************************************************************************************/
+
+        /// <summary>Is this node playing and not yet at its end?</summary>
+        /// <remarks>
+        /// This method is called by <see cref="IEnumerator.MoveNext"/> so this object can be used as a custom yield
+        /// instruction to wait until it finishes.
+        /// </remarks>
+        public abstract bool IsPlayingAndNotEnding();
+
+        bool IEnumerator.MoveNext()
+            => IsPlayingAndNotEnding();
+
+        object IEnumerator.Current
+            => null;
+
+        void IEnumerator.Reset() { }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Children
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        protected internal override AnimancerNode GetChildNode(int index)
+            => GetChild(index);
+
+        /// <summary>Returns the state connected to the specified `index` as a child of this node.</summary>
+        /// <remarks>When overriding, don't call this base method because it throws an exception.</remarks>
+        /// <exception cref="NotSupportedException">This node can't have children.</exception>
+        public virtual AnimancerState GetChild(int index)
+        {
+            MarkAsUsed(this);
+            throw new NotSupportedException(this + " can't have children.");
+        }
+
+        /// <summary>Called when a child is connected with this node as its <see cref="AnimancerNodeBase.Parent"/>.</summary>
+        /// <remarks>When overriding, don't call this base method because it throws an exception.</remarks>
+        /// <exception cref="NotSupportedException">This node can't have children.</exception>
+        protected internal virtual void OnAddChild(AnimancerState child)
+        {
+            MarkAsUsed(this);
+            child.SetParentInternal(null);
+            throw new NotSupportedException(this + " can't have children.");
+        }
+
+        /************************************************************************************************************************/
+        // IEnumerable for 'foreach' statements.
+        /************************************************************************************************************************/
+
+        /// <summary>Gets an enumerator for all of this node's child states.</summary>
+        public virtual FastEnumerator<AnimancerState> GetEnumerator()
+            => default;
+
+        IEnumerator<AnimancerState> IEnumerable<AnimancerState>.GetEnumerator()
+            => GetEnumerator();
+
+        IEnumerator IEnumerable.GetEnumerator()
+            => GetEnumerator();
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Weight
+        /************************************************************************************************************************/
+
+        /// <summary>[Internal] The current blend weight of this node. Accessed via <see cref="Weight"/>.</summary>
+        internal float _Weight;
+
+        /************************************************************************************************************************/
+
+        /// <summary>The current blend weight of this node which determines how much it affects the final output.</summary>
+        /// 
+        /// <remarks>
+        /// 0 has no effect while 1 applies the full effect and values inbetween apply a proportional effect.
+        /// <para></para>
+        /// Setting this property cancels any fade currently in progress. If you don't wish to do that, you can use
+        /// <see cref="SetWeight"/> instead.
+        /// <para></para>
+        /// <em>Animancer Lite only allows this value to be set to 0 or 1 in runtime builds.</em>
+        /// </remarks>
+        ///
+        /// <example>
+        /// Calling <see cref="AnimancerLayer.Play(AnimationClip)"/> immediately sets the weight of all states to 0
+        /// and the new state to 1. Note that this is separate from other values like
+        /// <see cref="AnimancerState.IsPlaying"/> so a state can be paused at any point and still show its pose on the
+        /// character or it could be still playing at 0 weight if you want it to still trigger events (though states
+        /// are normally stopped when they reach 0 weight so you would need to explicitly set it to playing again).
+        /// <para></para>
+        /// Calling <see cref="AnimancerLayer.Play(AnimationClip, float, FadeMode)"/> doesn't immediately change
+        /// the weights, but instead calls <see cref="StartFade(float, float)"/> on every state to set their
+        /// <see cref="TargetWeight"/> and <see cref="FadeSpeed"/>. Then every update each state's weight will move
+        /// towards that target value at that speed.
+        /// </example>
+        public float Weight
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            get => _Weight;
+            set
+            {
+                FadeGroup = null;
+                SetWeight(value);
+            }
+        }
+
+        /// <summary>
+        /// Sets the current blend weight of this node which determines how much it affects the final output.
+        /// 0 has no effect while 1 applies the full effect of this node.
+        /// </summary>
+        /// <remarks>
+        /// This method allows any fade currently in progress to continue. If you don't wish to do that, you can set
+        /// the <see cref="Weight"/> property instead.
+        /// <para></para>
+        /// <em>Animancer Lite only allows this value to be set to 0 or 1 in runtime builds.</em>
+        /// </remarks>
+        public virtual void SetWeight(float value)
+            => SetWeightInternal(value);
+
+        /// <summary>The internal non-<c>virtual</c> implementation of <see cref="SetWeight"/>.</summary>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        private void SetWeightInternal(float value)
+        {
+            if (_Weight == value)
+                return;
+
+            Validate.AssertSetWeight(this, value);
+
+            _Weight = value;
+
+            if (Graph != null)
+                Parent?.Playable.ApplyChildWeight(this);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        protected internal override float BaseWeight
+            => Weight;
+
+        /// <summary>
+        /// The <see cref="Weight"/> of this state multiplied by the <see cref="Weight"/> of each of its parents down
+        /// the hierarchy to determine how much this state affects the final output.
+        /// </summary>
+        public float EffectiveWeight
+        {
+            get
+            {
+                var weight = Weight;
+
+                var parent = Parent;
+                while (parent != null)
+                {
+                    weight *= parent.BaseWeight;
+                    parent = parent.Parent;
+                }
+
+                return weight;
+            }
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Fading
+        /************************************************************************************************************************/
+
+        internal FadeGroup _FadeGroup;
+
+        /// <summary>The current fade being applied to this node (if any).</summary>
+        public FadeGroup FadeGroup
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            get => _FadeGroup;
+            internal set
+            {
+                _FadeGroup?.Remove(this);
+                _FadeGroup = value;
+            }
+        }
+
+        /// <summary>
+        /// The desired <see cref="Weight"/> which this node is fading towards according to the
+        /// <see cref="FadeSpeed"/>.
+        /// </summary>
+        public float TargetWeight
+            => FadeGroup != null
+            ? FadeGroup.GetTargetWeight(this)
+            : Weight;
+
+        /// <summary>The speed at which this node is fading towards the <see cref="TargetWeight"/>.</summary>
+        /// <remarks>
+        /// This value isn't affected by this node's <see cref="AnimancerNodeBase.Speed"/>,
+        /// but is affected by its parents.
+        /// </remarks>
+        public float FadeSpeed
+            => FadeGroup != null
+            ? FadeGroup.FadeSpeed
+            : 0;
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Calls <see cref="OnStartFade"/> and starts fading the <see cref="Weight"/> over the course
+        /// of the <see cref="AnimancerGraph.DefaultFadeDuration"/> (in seconds).
+        /// </summary>
+        /// <remarks>
+        /// If the `targetWeight` is 0 then <see cref="Stop"/> will be called when the fade is complete.
+        /// <para></para>
+        /// If the <see cref="Weight"/> is already equal to the `targetWeight` then the fade will end
+        /// immediately.
+        /// </remarks>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void StartFade(float targetWeight)
+            => StartFade(targetWeight, AnimancerGraph.DefaultFadeDuration);
+
+        /// <summary>
+        /// Calls <see cref="OnStartFade"/> and starts fading the <see cref="Weight"/>
+        /// over the course of the `fadeDuration` (in seconds).
+        /// </summary>
+        /// <remarks>
+        /// If the `targetWeight` is 0 then <see cref="Stop"/> will be called when the fade is complete.
+        /// <para></para>
+        /// If the <see cref="Weight"/> is already equal to the `targetWeight`
+        /// then the fade will end immediately.
+        /// <para></para>
+        /// <em>Animancer Lite only allows a `targetWeight` of 0 or 1
+        /// and the default `fadeDuration` (0.25 seconds) in runtime builds.</em>
+        /// </remarks>
+        public void StartFade(float targetWeight, float fadeDuration)
+        {
+            if (Weight == targetWeight && FadeGroup == null)
+            {
+                OnStartFade();
+            }
+            else if (fadeDuration > 0)
+            {
+                var fade = FadeGroup.Pool.Instance.Acquire();
+                fade.SetFadeIn(this);
+                fade.StartFade(targetWeight, 1 / fadeDuration);
+            }
+            else
+            {
+                Weight = targetWeight;
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Called by <see cref="StartFade(float, float)"/>.</summary>
+        protected internal abstract void OnStartFade();
+
+        /************************************************************************************************************************/
+
+        /// <summary>Removes this node from the <see cref="FadeGroup"/>.</summary>
+        public void CancelFade()
+            => _FadeGroup?.Remove(this);
+
+        /// <summary>[Internal] Called by <see cref="FadeGroup.Remove"/>.</summary>
+        /// <remarks>Not called when a fade fully completes.</remarks>
+        protected internal virtual void InternalClearFade()
+        {
+            _FadeGroup = null;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Stops the animation and makes it inactive immediately so it no longer affects the output.</summary>
+        /// <remarks>
+        /// Sets <see cref="Weight"/> = 0 by default unless overridden.
+        /// <para></para>
+        /// Note that playing something new will automatically stop the old animation.
+        /// </remarks>
+        public void Stop()
+        {
+            FadeGroup = null;
+            SetWeightInternal(0);
+            StopWithoutWeight();
+        }
+
+        /// <summary>[Internal] Stops this node without setting its <see cref="Weight"/>.</summary>
+        protected internal virtual void StopWithoutWeight() { }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Inverse Kinematics
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Should setting the <see cref="AnimancerNodeBase.Parent"/>
+        /// also set this node's <see cref="ApplyAnimatorIK"/> to match it?
+        /// Default is true.
+        /// </summary>
+        public static bool ApplyParentAnimatorIK { get; set; } = true;
+
+        /// <summary>
+        /// Should setting the <see cref="AnimancerNodeBase.Parent"/>
+        /// also set this node's <see cref="ApplyFootIK"/> to match it?
+        /// Default is true.
+        /// </summary>
+        public static bool ApplyParentFootIK { get; set; } = true;
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Copies the IK settings from `copyFrom` into this node:
+        /// <list type="bullet">
+        /// <item>If <see cref="ApplyParentAnimatorIK"/> is true, copy <see cref="ApplyAnimatorIK"/>.</item>
+        /// <item>If <see cref="ApplyParentFootIK"/> is true, copy <see cref="ApplyFootIK"/>.</item>
+        /// </list>
+        /// </summary>
+        public virtual void CopyIKFlags(AnimancerNodeBase copyFrom)
+        {
+            if (Graph == null)
+                return;
+
+            if (ApplyParentAnimatorIK)
+                ApplyAnimatorIK = copyFrom.ApplyAnimatorIK;
+
+            if (ApplyParentFootIK)
+                ApplyFootIK = copyFrom.ApplyFootIK;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override bool ApplyAnimatorIK
+        {
+            get
+            {
+                for (int i = ChildCount - 1; i >= 0; i--)
+                {
+                    var state = GetChild(i);
+                    if (state.ApplyAnimatorIK)
+                        return true;
+                }
+
+                return false;
+            }
+            set
+            {
+                for (int i = ChildCount - 1; i >= 0; i--)
+                {
+                    var state = GetChild(i);
+                    state.ApplyAnimatorIK = value;
+                }
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override bool ApplyFootIK
+        {
+            get
+            {
+                for (int i = ChildCount - 1; i >= 0; i--)
+                {
+                    var state = GetChild(i);
+                    if (state.ApplyFootIK)
+                        return true;
+                }
+
+                return false;
+            }
+            set
+            {
+                for (int i = ChildCount - 1; i >= 0; i--)
+                {
+                    var state = GetChild(i);
+                    state.ApplyFootIK = value;
+                }
+            }
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Descriptions
+        /************************************************************************************************************************/
+
+#if UNITY_ASSERTIONS
+        /// <summary>[Assert-Only] The Inspector display name of this node.</summary>
+        /// <remarks>Set using <see cref="SetDebugName"/>.</remarks>
+        public object DebugName { get; private set; }
+#endif
+
+        /// <summary>[Assert-Conditional] Sets the <see cref="DebugName"/> to display in the Inspector.</summary>
+        [System.Diagnostics.Conditional(Strings.Assertions)]
+        public void SetDebugName(object name)
+        {
+#if UNITY_ASSERTIONS
+            DebugName = name;
+#endif
+        }
+
+        /// <summary>The Inspector display name of this node.</summary>
+        public override string ToString()
+        {
+#if UNITY_ASSERTIONS
+            if (NameCache.TryToString(DebugName, out var name))
+                return name;
+#endif
+
+            return base.ToString();
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public void AppendDescription(StringBuilder text, string separator = "\n")
+        {
+
+            text.Append(ToString());
+
+            AppendDetails(text, separator);
+
+            if (ChildCount > 0)
+            {
+                text.AppendField(separator, nameof(ChildCount), ChildCount);
+                var indentedSeparator = separator + Strings.Indent;
+
+                var i = 0;
+                foreach (var child in this)
+                {
+                    text.Append(separator)
+                        .Append('[')
+                        .Append(i++)
+                        .Append("] ")
+                        .AppendDescription(child, indentedSeparator, true);
+                }
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Called by <see cref="AppendDescription"/> to append the details of this node.</summary>
+        protected virtual void AppendDetails(StringBuilder text, string separator)
+        {
+            text.AppendField(separator, "Playable", _Playable.IsValid()
+                ? _Playable.GetPlayableType().ToString()
+                : "Invalid");
+
+            var parent = Parent;
+            var isConnected =
+                parent != null &&
+                parent.Playable.GetInput(Index).IsValid();
+
+            text.AppendField(separator, "Connected", isConnected);
+
+            text.AppendField(separator, nameof(Index), Index);
+            if (Index < 0)
+                text.Append(" (No Parent)");
+
+            text.AppendField(separator, nameof(Speed), Speed);
+
+            var realSpeed = _Playable.IsValid()
+                ? _Playable.GetSpeed()
+                : Speed;
+
+            if (realSpeed != Speed)
+                text.Append(" (Real ").Append(realSpeed).Append(')');
+
+            text.AppendField(separator, nameof(Weight), Weight);
+
+            if (Weight != TargetWeight)
+            {
+                text.AppendField(separator, nameof(TargetWeight), TargetWeight);
+                text.AppendField(separator, nameof(FadeSpeed), FadeSpeed);
+            }
+
+            AppendIKDetails(text, separator, this);
+
+#if UNITY_ASSERTIONS
+            if (_ConstructorStackTrace != null)
+                text.AppendField(separator, "ConstructorStackTrace", _ConstructorStackTrace);
+#endif
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Appends the details of <see cref="AnimancerNodeBase.ApplyAnimatorIK"/> and
+        /// <see cref="AnimancerNodeBase.ApplyFootIK"/>.
+        /// </summary>
+        public static void AppendIKDetails(StringBuilder text, string separator, AnimancerNodeBase node)
+        {
+            if (!node.Playable.IsValid())
+                return;
+
+            text.Append(separator)
+                .Append("InverseKinematics: ");
+
+            if (node.ApplyAnimatorIK)
+            {
+                text.Append("OnAnimatorIK");
+                if (node.ApplyFootIK)
+                    text.Append(", FootIK");
+            }
+            else if (node.ApplyFootIK)
+            {
+                text.Append("FootIK");
+            }
+            else
+            {
+                text.Append("None");
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Returns the hierarchy path of this node through its <see cref="AnimancerNodeBase.Parent"/>s.</summary>
+        public string GetPath()
+        {
+            var path = StringBuilderPool.Instance.Acquire();
+
+            if (Parent is AnimancerNode parent)
+            {
+                AppendPath(path, parent);
+                AppendPortAndType(path);
+            }
+            else
+            {
+                AppendPortAndType(path);
+            }
+
+            return path.ReleaseToString();
+        }
+
+        /// <summary>Appends the hierarchy path of this state through its <see cref="AnimancerNodeBase.Parent"/>s.</summary>
+        private static void AppendPath(StringBuilder path, AnimancerNode parent)
+        {
+            if (parent != null)
+            {
+                if (parent.Parent is AnimancerNode grandParent)
+                {
+                    AppendPath(path, grandParent);
+                }
+                else
+                {
+                    var layer = parent.Layer;
+                    if (layer != null)
+                    {
+                        path.Append("Layers[")
+                            .Append(parent.Layer.Index)
+                            .Append("].States");
+                    }
+                    else
+                    {
+                        path.Append("NoLayer -> ")
+                            .Append(parent.ToString());
+                    }
+
+                    return;
+                }
+            }
+
+            if (parent is AnimancerState state)
+            {
+                state.AppendPortAndType(path);
+            }
+            else
+            {
+                path.Append(" -> ")
+                    .Append(parent.GetType());
+            }
+        }
+
+        /// <summary>Appends "[Index] -> ToString()".</summary>
+        private void AppendPortAndType(StringBuilder path)
+        {
+            path.Append('[')
+                .Append(Index)
+                .Append("] -> ")
+                .Append(ToString());
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/Nodes/AnimancerNode.cs.meta

@@ -0,0 +1,11 @@
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Packages/com.kybernetik.animancer/Runtime/Core/Nodes/AnimancerNodeBase.cs

@@ -0,0 +1,282 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System;
+using UnityEngine.Playables;
+
+namespace Animancer
+{
+    /// <summary>Base class for objects that manage a <see cref="UnityEngine.Playables.Playable"/>.</summary>
+    /// <remarks>This is the base class of <see cref="AnimancerGraph"/> and <see cref="AnimancerNode"/>.</remarks>
+    /// https://kybernetik.com.au/animancer/api/Animancer/AnimancerNodeBase
+    public abstract class AnimancerNodeBase
+    {
+        /************************************************************************************************************************/
+
+        /// <summary>The <see cref="AnimancerGraph"/> containing this node.</summary>
+        public AnimancerGraph Graph { get; internal set; }
+
+        /************************************************************************************************************************/
+
+        /// <summary>The object which receives the output of the <see cref="Playable"/>.</summary>
+        /// <remarks>
+        /// This leads from <see cref="AnimancerState"/> to <see cref="AnimancerLayer"/> to
+        /// <see cref="AnimancerGraph"/> to <c>null</c>.
+        /// </remarks>
+        public AnimancerNodeBase Parent { get; protected set; }
+
+        /************************************************************************************************************************/
+
+        /// <summary>The root <see cref="AnimancerLayer"/> which this node is connected to (if any).</summary>
+        public virtual AnimancerLayer Layer
+            => Parent?.Layer;
+
+        /************************************************************************************************************************/
+
+        /// <summary>The number of nodes using this as their <see cref="Parent"/>.</summary>
+        public virtual int ChildCount
+            => 0;
+
+        /// <summary>Returns the node connected to the specified `index` as a child of this node.</summary>
+        /// <remarks>When overriding, don't call this base method because it throws an exception.</remarks>
+        /// <exception cref="NotSupportedException">This node can't have children.</exception>
+        protected internal virtual AnimancerNode GetChildNode(int index)
+        {
+            MarkAsUsed(this);
+            throw new NotSupportedException(this + " can't have children.");
+        }
+
+        /// <summary>Should child playables stay connected to the graph at all times?</summary>
+        /// <remarks>
+        /// If false, playables will be disconnected from the graph while they are inactive to stop it from
+        /// evaluating them every frame which usually improves performance.
+        /// </remarks>
+        /// <seealso cref="AnimancerGraph.KeepChildrenConnected"/>
+        public virtual bool KeepChildrenConnected
+            => true;
+
+        /************************************************************************************************************************/
+
+        /// <summary>Called when a child's <see cref="AnimancerState.IsLooping"/> value changes.</summary>
+        protected virtual void OnChildIsLoopingChanged(bool value) { }
+
+        /// <summary>[Internal] Calls <see cref="OnChildIsLoopingChanged"/> for each <see cref="Parent"/> recursively.</summary>
+        protected internal void OnIsLoopingChangedRecursive(bool value)
+        {
+            var parent = Parent;
+
+            while (parent != null)
+            {
+                parent.OnChildIsLoopingChanged(value);
+
+                parent = parent.Parent;
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Internal] Called when a child's <see cref="Parent"/> is changed from this node.</summary>
+        /// <remarks>When overriding, don't call this base method because it throws an exception.</remarks>
+        /// <exception cref="NotSupportedException">This node can't have children.</exception>
+        protected internal virtual void OnRemoveChild(AnimancerState child)
+        {
+            MarkAsUsed(this);
+            child.SetParentInternal(null);
+            throw new NotSupportedException(this + " can't have children.");
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Internal] The <see cref="Playable"/>.</summary>
+        protected internal Playable _Playable;
+
+        /// <summary>The internal object this node manages in the <see cref="PlayableGraph"/>.</summary>
+        /// <remarks>
+        /// Must be set by <see cref="AnimancerNode.CreatePlayable()"/>. Failure to do so will throw the following
+        /// exception throughout the system when using this node: "<see cref="ArgumentException"/>: The playable passed
+        /// as an argument is invalid. To create a valid playable, please use the appropriate Create method".
+        /// </remarks>
+        public Playable Playable => _Playable;
+
+        /************************************************************************************************************************/
+
+        /// <summary>The current blend weight of this node which determines how much it affects the final output.</summary>
+        protected internal virtual float BaseWeight => 1;
+
+        /************************************************************************************************************************/
+        #region Speed
+        /************************************************************************************************************************/
+
+        private float _Speed = 1;
+
+        /// <summary>[Pro-Only] How fast the <see cref="AnimancerState.Time"/> is advancing every frame (default 1).</summary>
+        /// 
+        /// <remarks>
+        /// A negative value will play the animation backwards.
+        /// <para></para>
+        /// To pause an animation, consider setting <see cref="AnimancerState.IsPlaying"/> to false instead of setting
+        /// this value to 0.
+        /// <para></para>
+        /// <em>Animancer Lite doesn't allow this value to be changed in runtime builds.</em>
+        /// <para></para>
+        /// <strong>Example:</strong><code>
+        /// void SpeedExample(AnimancerComponent animancer, AnimationClip clip)
+        /// {
+        ///     var state = animancer.Play(clip);
+        ///
+        ///     state.Speed = 1;// Normal speed.
+        ///     state.Speed = 2;// Double speed.
+        ///     state.Speed = 0.5f;// Half speed.
+        ///     state.Speed = -1;// Normal speed playing backwards.
+        ///     state.NormalizedTime = 1;// Start at the end to play backwards from there.
+        /// }
+        /// </code></remarks>
+        /// 
+        /// <exception cref="ArgumentOutOfRangeException">The value is not finite.</exception>
+        public virtual float Speed
+        {
+            get => _Speed;
+            set
+            {
+                if (_Speed == value)
+                    return;
+
+#if UNITY_ASSERTIONS
+                if (!value.IsFinite())
+                {
+                    MarkAsUsed(this);
+                    throw new ArgumentOutOfRangeException(
+                        nameof(value),
+                        value,
+                        $"{nameof(Speed)} {Strings.MustBeFinite}");
+                }
+#endif
+                _Speed = value;
+
+                if (_Playable.IsValid())
+                    _Playable.SetSpeed(value);
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// The <see cref="Speed"/> of this node multiplied by the <see cref="Speed"/> of each of its parents to
+        /// determine the actual speed it's playing at.
+        /// </summary>
+        public float EffectiveSpeed
+        {
+            get => Speed * ParentEffectiveSpeed;
+            set => Speed = value / ParentEffectiveSpeed;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// The multiplied <see cref="Speed"/> of each of the <see cref="Parent"/> down the hierarchy,
+        /// excluding the root <see cref="Speed"/>.
+        /// </summary>
+        private float ParentEffectiveSpeed
+        {
+            get
+            {
+                var parent = Parent;
+                if (parent == null)
+                    return 1;
+
+                var speed = parent.Speed;
+
+                while ((parent = parent.Parent) != null)
+                {
+                    speed *= parent.Speed;
+                }
+
+                return speed;
+            }
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Should Unity call <c>OnAnimatorIK</c> on the animated object while this object and its children have any
+        /// <see cref="AnimancerNode.Weight"/>?
+        /// </summary>
+        /// <remarks>
+        /// This is equivalent to the "IK Pass" toggle in Animator Controller layers, except that due to limitations in
+        /// the Playables API the <c>layerIndex</c> will always be zero.
+        /// <para></para>
+        /// This value starts false by default, but can be automatically changed by
+        /// <see cref="AnimancerNode.CopyIKFlags"/> when the <see cref="Parent"/> is set.
+        /// <para></para>
+        /// IK only takes effect while at least one <see cref="ClipState"/> has a <see cref="AnimancerNode.Weight"/>
+        /// above zero. Other node types either store the value to apply to their children or don't support IK.
+        /// <para></para>
+        /// <strong>Documentation:</strong>
+        /// <see href="https://kybernetik.com.au/animancer/docs/manual/ik#ik-pass">
+        /// IK Pass</see>
+        /// </remarks>
+        public abstract bool ApplyAnimatorIK { get; set; }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Should this object and its children apply IK to the character's feet?</summary>
+        /// <remarks>
+        /// This is equivalent to the "Foot IK" toggle in Animator Controller states.
+        /// <para></para>
+        /// This value starts true by default for <see cref="ClipState"/>s (false for others), but can be automatically
+        /// changed by <see cref="AnimancerNode.CopyIKFlags"/> when the <see cref="Parent"/> is set.
+        /// <para></para>
+        /// IK only takes effect while at least one <see cref="ClipState"/> has a <see cref="AnimancerNode.Weight"/>
+        /// above zero. Other node types either store the value to apply to their children or don't support IK.
+        /// <para></para>
+        /// <strong>Documentation:</strong>
+        /// <see href="https://kybernetik.com.au/animancer/docs/manual/ik#foot-ik">
+        /// Foot IK</see>
+        /// </remarks>
+        public abstract bool ApplyFootIK { get; set; }
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Internal] Applies a change to a child's <see cref="AnimancerState.IsActive"/>.</summary>
+        protected internal virtual void ApplyChildActive(AnimancerState child, bool setActive)
+            => child.ShouldBeActive = setActive;
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Assert-Conditional] Prevents the `node` from causing <see cref="OptionalWarning.UnusedNode"/>.</summary>
+        [System.Diagnostics.Conditional(Strings.Assertions)]
+        public static void MarkAsUsed(AnimancerNodeBase node)
+        {
+#if UNITY_ASSERTIONS
+            if (node.Graph == null)
+                GC.SuppressFinalize(node);
+#endif
+        }
+
+        /************************************************************************************************************************/
+#if UNITY_EDITOR
+        /************************************************************************************************************************/
+
+        /// <summary>[Editor-Only]
+        /// Adds functions to show and set <see cref="ApplyAnimatorIK"/> and
+        /// <see cref="ApplyFootIK"/>.
+        /// </summary>
+        public static void AddContextMenuIK(UnityEditor.GenericMenu menu, AnimancerNodeBase ik)
+        {
+#if UNITY_IMGUI
+            menu.AddItem(new("Inverse Kinematics/Apply Animator IK ?"),
+                ik.ApplyAnimatorIK,
+                () => ik.ApplyAnimatorIK = !ik.ApplyAnimatorIK);
+            menu.AddItem(new("Inverse Kinematics/Apply Foot IK ?"),
+                ik.ApplyFootIK,
+                () => ik.ApplyFootIK = !ik.ApplyFootIK);
+#endif
+        }
+
+        /************************************************************************************************************************/
+#endif
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/Nodes/AnimancerNodeBase.cs.meta

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Packages/com.kybernetik.animancer/Runtime/Core/Nodes/AnimancerState.ExpectFade.cs

@@ -0,0 +1,67 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+namespace Animancer
+{
+    /// https://kybernetik.com.au/animancer/api/Animancer/AnimancerState
+    public abstract partial class AnimancerState
+    {
+        /************************************************************************************************************************/
+
+#if UNITY_ASSERTIONS
+        private static bool _SkipNextExpectFade;
+
+        private bool _ExpectFade;
+#endif
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Internal] Sets a flag for <see cref="OptionalWarning.ExpectFade"/>.</summary>
+        [System.Diagnostics.Conditional(Strings.Assertions)]
+        public static void SetExpectFade(AnimancerState state, float fadeDuration)
+        {
+#if UNITY_ASSERTIONS
+            state._ExpectFade = fadeDuration > 0;
+#endif
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Internal] Sets the next <see cref="AssertNotExpectingFade"/> call to be skipped.</summary>
+        [System.Diagnostics.Conditional(Strings.Assertions)]
+        internal static void SkipNextExpectFade()
+        {
+#if UNITY_ASSERTIONS
+            _SkipNextExpectFade = true;
+#endif
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Internal] Call when playing a `state` without a fade to check <see cref="OptionalWarning.ExpectFade"/>.</summary>
+        [System.Diagnostics.Conditional(Strings.Assertions)]
+        internal static void AssertNotExpectingFade(AnimancerState state)
+        {
+#if UNITY_ASSERTIONS
+            if (_SkipNextExpectFade)
+            {
+                _SkipNextExpectFade = false;
+                return;
+            }
+
+            if (state._ExpectFade)
+            {
+                state._ExpectFade = false;// Don't log again for the same state.
+                OptionalWarning.ExpectFade.Log(
+                    "A state was created by a transition with a non-zero Fade Duration" +
+                    " but is now being played without a fade, which may be unintentional." +
+                    " In most cases, the transition should be played so that it can properly" +
+                    " apply its settings, unlike if the state is played directly.",
+                    state.Graph?.Component);
+            }
+#endif
+        }
+
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/Nodes/AnimancerState.ExpectFade.cs.meta

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Packages/com.kybernetik.animancer/Runtime/Core/Nodes/AnimancerState.cs.meta

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Packages/com.kybernetik.animancer/Runtime/Core/Nodes/AnimationJobState.cs

@@ -0,0 +1,217 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System;
+using Unity.Collections;
+using UnityEngine.Animations;
+using UnityEngine.Playables;
+
+namespace Animancer
+{
+    /// <summary>[Pro-Only] A scripted animation for an <see cref="AnimationJobState{T}"/>.</summary>
+    /// <remarks>
+    /// <strong>Sample:</strong>
+    /// <see href="https://kybernetik.com.au/animancer/docs/samples/jobs/job-states">
+    /// Job States</see>
+    /// </remarks>
+    public interface IAnimancerStateJob : IDisposable
+    {
+        /************************************************************************************************************************/
+
+        /// <summary>The total time this job would take to play in seconds at normal speed.</summary>
+        float Length { get; }
+
+        /// <summary>Does this job loop back to the start when its time passes its <see cref="Length"/>?</summary>
+        bool IsLooping { get; }
+
+        /// <summary>Defines what do to when processing the root motion.</summary>
+        /// <remarks>
+        /// This is called by <see cref="IAnimationJob.ProcessRootMotion"/>
+        /// and receives the <see cref="AnimancerState.TimeD"/>.
+        /// </remarks>
+        void ProcessRootMotion(AnimationStream stream, double time);
+
+        /// <summary>Defines what do to when processing the animation.</summary>
+        /// <remarks>
+        /// This is called by <see cref="IAnimationJob.ProcessAnimation"/>
+        /// and receives the <see cref="AnimancerState.TimeD"/>.
+        /// </remarks>
+        void ProcessAnimation(AnimationStream stream, double time);
+
+        /************************************************************************************************************************/
+    }
+
+    /// <summary>[Pro-Only] An <see cref="AnimancerState"/> which plays an <see cref="IAnimancerStateJob"/>.</summary>
+    /// <remarks>
+    /// <strong>Sample:</strong>
+    /// <see href="https://kybernetik.com.au/animancer/docs/samples/jobs/job-states">
+    /// Job States</see>
+    /// </remarks>
+    /// https://kybernetik.com.au/animancer/api/Animancer/AnimationJobState_1
+    /// 
+    public class AnimationJobState<T> : AnimancerState, IUpdatable, IDisposable
+        where T : struct, IAnimancerStateJob
+    {
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// An <see cref="IAnimationJob"/> which wraps an <see cref="IAnimancerStateJob"/>
+        /// to provide its <see cref="Time"/> value.
+        /// </summary>
+        /// https://kybernetik.com.au/animancer/api/Animancer/TimedJob
+        public struct TimedJob : IAnimationJob, IDisposable
+        {
+            /// <summary>The <see cref="IAnimancerStateJob"/> data.</summary>
+            public T Job;
+
+            /// <summary>The <see cref="AnimancerState.TimeD"/> to be passed to the job.</summary>
+            public NativeArray<double> Time;
+
+            /// <summary>Cleans up the unmanaged resources used by this job.</summary>
+            public readonly void Dispose()
+            {
+                if (Time.IsCreated)
+                    Time.Dispose();
+
+                Job.Dispose();
+            }
+
+            /// <summary>Defines what do to when processing the root motion.</summary>
+            public readonly void ProcessRootMotion(AnimationStream stream)
+                => Job.ProcessRootMotion(stream, Time[0]);
+
+            /// <summary>Defines what do to when processing the animation.</summary>
+            public readonly void ProcessAnimation(AnimationStream stream)
+                => Job.ProcessAnimation(stream, Time[0]);
+        }
+
+        /************************************************************************************************************************/
+
+        private new AnimationScriptPlayable _Playable;
+        private TimedJob _Job;
+
+        /// <summary>The data of the job to be executed by this state.</summary>
+        /// <remarks>
+        /// Setting this value has a minor performance cost. If it needs to be changed frequently,
+        /// consider using a single-item <c>NativeArray</c> in your job as demonstrated in the
+        /// <see href="https://kybernetik.com.au/animancer/docs/samples/jobs/hit-impacts#angle">
+        /// Hit Impacts</see> sample.
+        /// </remarks>
+        public T Job
+        {
+            get => _Job.Job;
+            set
+            {
+                _Job.Job = value;
+                _Playable.SetJobData(_Job);
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override float Length
+            => _Job.Job.Length;
+
+        /// <inheritdoc/>
+        public override bool IsLooping
+            => _Job.Job.IsLooping;
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        int IUpdatable.UpdatableIndex { get; set; } = IUpdatable.List.NotInList;
+
+        /************************************************************************************************************************/
+
+        /// <summary>Creates a new <see cref="AnimationJobState{T}"/>.</summary>
+        public AnimationJobState(T job)
+        {
+            _Job.Job = job;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override void SetGraph(AnimancerGraph graph)
+        {
+            Graph?.Disposables.Remove(this);
+            base.SetGraph(graph);
+            Graph?.Disposables.Add(this);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        protected override void CreatePlayable(out Playable playable)
+        {
+            if (!_Job.Time.IsCreated)
+                _Job.Time = AnimancerUtilities.CreateNativeReference<double>();
+
+            playable = _Playable = AnimationScriptPlayable.Create(Graph.PlayableGraph, _Job);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        protected override void OnSetIsPlaying()
+        {
+            base.OnSetIsPlaying();
+
+            if (IsPlaying)
+                Graph.RequirePreUpdate(this);
+            else
+                Graph.CancelPreUpdate(this);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Called every frame before the job is applied to send the
+        /// <see cref="AnimancerState.Time"/> to the <see cref="Job"/>.
+        /// </summary>
+        public virtual void Update()
+        {
+            var time = _Job.Time;
+            time[0] = TimeD;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        void IDisposable.Dispose()
+            => _Job.Dispose();
+
+        /// <inheritdoc/>
+        public override void Destroy()
+        {
+            base.Destroy();
+
+            if (Graph != null)
+            {
+                Graph.CancelPreUpdate(this);
+                Graph.Disposables.Remove(this);
+            }
+
+            _Job.Dispose();
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override string ToString()
+            => _Job.Job.ToString();
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override AnimancerState Clone(CloneContext context)
+        {
+            var clone = new AnimationJobState<T>(_Job.Job);
+            clone.CopyFrom(this, context);
+            return clone;
+        }
+
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/Nodes/AnimationJobState.cs.meta

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Packages/com.kybernetik.animancer/Runtime/Core/Nodes/ClipState.cs

@@ -0,0 +1,190 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System;
+using UnityEngine;
+using UnityEngine.Animations;
+using UnityEngine.Playables;
+using Object = UnityEngine.Object;
+
+namespace Animancer
+{
+    /// <summary>An <see cref="AnimancerState"/> which plays an <see cref="AnimationClip"/>.</summary>
+    /// <remarks>
+    /// <strong>Documentation:</strong>
+    /// <see href="https://kybernetik.com.au/animancer/docs/manual/playing/states">
+    /// States</see>
+    /// </remarks>
+    /// https://kybernetik.com.au/animancer/api/Animancer/ClipState
+    /// 
+    public class ClipState : AnimancerState
+    {
+        /************************************************************************************************************************/
+        #region Fields and Properties
+        /************************************************************************************************************************/
+
+        private AnimationClip _Clip;
+
+        /// <summary>The <see cref="AnimationClip"/> which this state plays.</summary>
+        public override AnimationClip Clip
+        {
+            get => _Clip;
+            set
+            {
+                Validate.AssertAnimationClip(value, true, $"set {nameof(ClipState)}.{nameof(Clip)}");
+                if (ChangeMainObject(ref _Clip, value))
+                {
+                    _Length = value.length;
+
+                    var isLooping = value.isLooping;
+                    if (_IsLooping != isLooping)
+                    {
+                        _IsLooping = isLooping;
+                        OnIsLoopingChangedRecursive(isLooping);
+                    }
+                }
+            }
+        }
+
+        /// <summary>The <see cref="AnimationClip"/> which this state plays.</summary>
+        public override Object MainObject
+        {
+            get => _Clip;
+            set => Clip = (AnimationClip)value;
+        }
+
+#if UNITY_EDITOR
+        /// <inheritdoc/>
+        public override Type MainObjectType
+            => typeof(AnimationClip);
+#endif
+
+        /************************************************************************************************************************/
+
+        private float _Length;
+
+        /// <summary>The <see cref="AnimationClip.length"/>.</summary>
+        public override float Length
+            => _Length;
+
+        /************************************************************************************************************************/
+
+        private bool _IsLooping;
+
+        /// <summary>The <see cref="Motion.isLooping"/>.</summary>
+        public override bool IsLooping
+            => _IsLooping;
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override AnimancerEvent.DispatchInfo GetEventDispatchInfo()
+        {
+            var length = _Length;
+            return new(
+                length,
+                length != 0 ? Time / length : 0,
+                _IsLooping);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override Vector3 AverageVelocity
+            => _Clip.averageSpeed;
+
+        /************************************************************************************************************************/
+        #region Inverse Kinematics
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override bool ApplyAnimatorIK
+        {
+            get => _Playable.IsValid() && ((AnimationClipPlayable)_Playable).GetApplyPlayableIK();
+            set
+            {
+                Validate.AssertPlayable(this);
+                ((AnimationClipPlayable)_Playable).SetApplyPlayableIK(value);
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override bool ApplyFootIK
+        {
+            get => _Playable.IsValid() && ((AnimationClipPlayable)_Playable).GetApplyFootIK();
+            set
+            {
+                Validate.AssertPlayable(this);
+                ((AnimationClipPlayable)_Playable).SetApplyFootIK(value);
+            }
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Methods
+        /************************************************************************************************************************/
+
+        /// <summary>Creates a new <see cref="ClipState"/> and sets its <see cref="Clip"/>.</summary>
+        /// <exception cref="ArgumentNullException">The `clip` is null.</exception>
+        public ClipState(AnimationClip clip)
+        {
+            Validate.AssertAnimationClip(clip, true, $"create {nameof(ClipState)}");
+            _Clip = clip;
+            _Length = clip.length;
+            _IsLooping = clip.isLooping;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Creates and assigns the <see cref="AnimationClipPlayable"/> managed by this node.</summary>
+        protected override void CreatePlayable(out Playable playable)
+        {
+            playable = AnimationClipPlayable.Create(Graph._PlayableGraph, _Clip);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override void RecreatePlayable()
+        {
+            var playable = (AnimationClipPlayable)_Playable;
+            var footIK = playable.GetApplyFootIK();
+            var playableIK = playable.GetApplyPlayableIK();
+
+            base.RecreatePlayable();
+
+            playable = (AnimationClipPlayable)_Playable;
+            playable.SetApplyFootIK(footIK);
+            playable.SetApplyPlayableIK(playableIK);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override void Destroy()
+        {
+            _Clip = null;
+            base.Destroy();
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override AnimancerState Clone(CloneContext context)
+        {
+            var clip = context.GetCloneOrOriginal(_Clip);
+            var clone = new ClipState(clip);
+            clone.CopyFrom(this, context);
+            return clone;
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/Nodes/ClipState.cs.meta

@@ -0,0 +1,13 @@
+fileFormatVersion: 2
+guid: 5cba070da561e2f4fa6d618d4701bce3
+timeCreated: 1515060256
+licenseType: Store
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.kybernetik.animancer/Runtime/Core/Nodes/ParentState.cs

@@ -0,0 +1,626 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+#pragma warning disable CS0649 // Field is never assigned to, and will always have its default value.
+
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Animations;
+using UnityEngine.Playables;
+using Object = UnityEngine.Object;
+
+namespace Animancer
+{
+    /// <summary>[Pro-Only]
+    /// An <see cref="AnimancerState"/> which contains other states.
+    /// </summary>
+    /// https://kybernetik.com.au/animancer/api/Animancer/ParentState
+    /// 
+    public abstract partial class ParentState : AnimancerState,
+        ICopyable<ParentState>
+    {
+        /************************************************************************************************************************/
+        #region Properties
+        /************************************************************************************************************************/
+
+        /// <summary>The children contained within this state.</summary>
+        /// <remarks>Only states up to the <see cref="ChildCount"/> should be assigned.</remarks>
+        protected AnimancerState[] ChildStates { get; private set; }
+            = Array.Empty<AnimancerState>();
+
+        /************************************************************************************************************************/
+
+        private int _ChildCount;
+
+        /// <inheritdoc/>
+        public sealed override int ChildCount
+            => _ChildCount;
+
+        /************************************************************************************************************************/
+
+        /// <summary>The size of the internal array of <see cref="ChildStates"/>.</summary>
+        /// <remarks>
+        /// This value starts at 0 then expands to <see cref="ChildCapacity"/>
+        /// when the first child is added.
+        /// </remarks>
+        public int ChildCapacity
+        {
+            get => ChildStates.Length;
+            set
+            {
+                if (value == ChildStates.Length)
+                    return;
+
+#if UNITY_ASSERTIONS
+                if (value <= 1 && OptionalWarning.MixerMinChildren.IsEnabled())
+                    OptionalWarning.MixerMinChildren.Log(
+                        $"The {nameof(ChildCapacity)} of '{this}' is being set to {value}." +
+                        $" The purpose of a mixer is to mix multiple child states so this may be a mistake.",
+                        Graph?.Component);
+#endif
+
+                var newChildStates = new AnimancerState[value];
+                if (value > _ChildCount)// Increase size.
+                {
+                    Array.Copy(ChildStates, newChildStates, _ChildCount);
+                }
+                else// Decrease size.
+                {
+                    for (int i = value; i < _ChildCount; i++)
+                        ChildStates[i].Destroy();
+
+                    Array.Copy(ChildStates, newChildStates, value);
+                    _ChildCount = value;
+                }
+
+                ChildStates = newChildStates;
+
+                if (_Playable.IsValid())
+                {
+                    _Playable.SetInputCount(value);
+                }
+                else if (Graph != null)
+                {
+                    CreatePlayable();
+                }
+
+                OnChildCapacityChanged();
+            }
+        }
+
+        /// <summary>Called when the <see cref="ChildCapacity"/> is changed.</summary>
+        protected virtual void OnChildCapacityChanged() { }
+
+        /// <summary><see cref="ChildCapacity"/> starts at 0 then expands to this value when the first child is added.</summary>
+        /// <remarks>Default 8.</remarks>
+        public static int DefaultChildCapacity { get; set; } = 8;
+
+        /// <summary>
+        /// Ensures that the remaining unused <see cref="ChildCapacity"/>
+        /// is greater than or equal to the specified `minimumCapacity`.
+        /// </summary>
+        public void EnsureRemainingChildCapacity(int minimumCapacity)
+        {
+            minimumCapacity += _ChildCount;
+            if (ChildCapacity < minimumCapacity)
+            {
+                var capacity = Math.Max(ChildCapacity, DefaultChildCapacity);
+                while (capacity < minimumCapacity)
+                    capacity *= 2;
+
+                ChildCapacity = capacity;
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public sealed override AnimancerState GetChild(int index)
+            => ChildStates[index];
+
+        /// <inheritdoc/>
+        public sealed override FastEnumerator<AnimancerState> GetEnumerator()
+            => new(ChildStates, _ChildCount);
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Initialization
+        /************************************************************************************************************************/
+
+        /// <summary>Creates and assigns the <see cref="AnimationMixerPlayable"/> managed by this state.</summary>
+        protected override void CreatePlayable(out Playable playable)
+        {
+            playable = AnimationMixerPlayable.Create(Graph._PlayableGraph, ChildCapacity);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Connects the `child` to this mixer at its <see cref="AnimancerNode.Index"/>.</summary>
+        protected internal override void OnAddChild(AnimancerState child)
+        {
+            Validate.AssertGraph(child, Graph);
+
+            var capacity = ChildCapacity;
+            if (_ChildCount >= capacity)
+                ChildCapacity = Math.Max(DefaultChildCapacity, capacity * 2);
+
+            child.Index = _ChildCount;
+            ChildStates[_ChildCount] = child;
+            _ChildCount++;
+
+            child.IsPlaying = IsPlaying;
+
+            if (Graph != null)
+                ConnectChildUnsafe(child.Index, child);
+
+#if UNITY_ASSERTIONS
+            _CachedToString = null;
+#endif
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Disconnects the `child` from this mixer at its <see cref="AnimancerNode.Index"/>.</summary>
+        protected internal override void OnRemoveChild(AnimancerState child)
+        {
+            Validate.AssertCanRemoveChild(child, ChildStates, _ChildCount);
+
+            // Shuffle all subsequent children down one place.
+            if (Graph == null || !Graph._PlayableGraph.IsValid())
+            {
+                Array.Copy(
+                    ChildStates, child.Index + 1,
+                    ChildStates, child.Index,
+                    _ChildCount - child.Index - 1);
+
+                for (int i = child.Index; i < _ChildCount - 1; i++)
+                    ChildStates[i].Index = i;
+            }
+            else
+            {
+                Graph._PlayableGraph.Disconnect(_Playable, child.Index);
+
+                for (int i = child.Index + 1; i < _ChildCount; i++)
+                {
+                    var otherChild = ChildStates[i];
+                    Graph._PlayableGraph.Disconnect(_Playable, otherChild.Index);
+                    otherChild.Index = i - 1;
+                    ChildStates[i - 1] = otherChild;
+                    ConnectChildUnsafe(i - 1, otherChild);
+                }
+            }
+
+            _ChildCount--;
+            ChildStates[_ChildCount] = null;
+
+#if UNITY_ASSERTIONS
+            _CachedToString = null;
+#endif
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override void Destroy()
+        {
+            DestroyChildren();
+            base.Destroy();
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public sealed override void CopyFrom(AnimancerState copyFrom, CloneContext context)
+            => this.CopyFromBase(copyFrom, context);
+
+        /// <inheritdoc/>
+        public virtual void CopyFrom(ParentState copyFrom, CloneContext context)
+        {
+            base.CopyFrom(copyFrom, context);
+
+            DestroyChildren();
+
+            var childCount = copyFrom.ChildCount;
+            EnsureRemainingChildCapacity(childCount);
+
+            for (int i = 0; i < childCount; i++)
+            {
+                var child = copyFrom.ChildStates[i];
+                child = context.Clone(child);
+                Add(child);
+            }
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Child Configuration
+        /************************************************************************************************************************/
+
+        /// <summary>Assigns the `state` as a child of this mixer.</summary>
+        /// <remarks>This is the same as calling <see cref="AnimancerState.SetParent"/>.</remarks>
+        public virtual void Add(AnimancerState child)
+            => child.SetParent(this);
+
+        /// <summary>Creates and returns a new <see cref="ClipState"/> to play the `clip` as a child of this mixer.</summary>
+        public virtual ClipState Add(AnimationClip clip)
+        {
+            var child = new ClipState(clip);
+            Add(child);
+            return child;
+        }
+
+        /// <summary>Calls <see cref="AnimancerUtilities.CreateStateAndApply"/> then <see cref="Add(AnimancerState)"/>.</summary>
+        public virtual AnimancerState Add(ITransition transition)
+        {
+            var child = transition.CreateStateAndApply(Graph);
+            Add(child);
+            return child;
+        }
+
+        /// <summary>Calls one of the other <see cref="Add(object)"/> overloads as appropriate for the `child`.</summary>
+        public virtual AnimancerState Add(object child)
+        {
+            if (child is AnimationClip clip)
+                return Add(clip);
+
+            if (child is ITransition transition)
+                return Add(transition);
+
+            if (child is AnimancerState state)
+            {
+                Add(state);
+                return state;
+            }
+
+            MarkAsUsed(this);
+            throw new ArgumentException(
+                $"Failed to {nameof(Add)} '{AnimancerUtilities.ToStringOrNull(child)}'" +
+                $" as child of '{this}' because it isn't an" +
+                $" {nameof(AnimationClip)}, {nameof(ITransition)}, or {nameof(AnimancerState)}.");
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Calls <see cref="Add(AnimationClip)"/> for each of the `clips`.</summary>
+        public void AddRange(IList<AnimationClip> clips)
+        {
+            var count = clips.Count;
+            EnsureRemainingChildCapacity(count);
+
+            for (int i = 0; i < count; i++)
+                Add(clips[i]);
+        }
+
+        /// <summary>Calls <see cref="Add(AnimationClip)"/> for each of the `clips`.</summary>
+        public void AddRange(params AnimationClip[] clips)
+            => AddRange((IList<AnimationClip>)clips);
+
+        /************************************************************************************************************************/
+
+        /// <summary>Calls <see cref="Add(ITransition)"/> for each of the `transitions`.</summary>
+        public void AddRange(IList<ITransition> transitions)
+        {
+            var count = transitions.Count;
+            EnsureRemainingChildCapacity(count);
+
+            for (int i = 0; i < count; i++)
+                Add(transitions[i]);
+        }
+
+        /// <summary>Calls <see cref="Add(ITransition)"/> for each of the `transitions`.</summary>
+        public void AddRange(params ITransition[] transitions)
+            => AddRange((IList<ITransition>)transitions);
+
+        /************************************************************************************************************************/
+
+        /// <summary>Calls <see cref="Add(object)"/> for each of the `children`.</summary>
+        public void AddRange(IList<object> children)
+        {
+            var count = children.Count;
+            EnsureRemainingChildCapacity(count);
+
+            for (int i = 0; i < count; i++)
+                Add(children[i]);
+        }
+
+        /// <summary>Calls <see cref="Add(object)"/> for each of the `children`.</summary>
+        public void AddRange(params object[] children)
+            => AddRange((IList<object>)children);
+
+        /************************************************************************************************************************/
+
+        /// <summary>Removes the child at the specified `index`.</summary>
+        public void Remove(int index, bool destroy)
+            => Remove(ChildStates[index], destroy);
+
+        /// <summary>Removes the specified `child`.</summary>
+        public void Remove(AnimancerState child, bool destroy)
+        {
+#if UNITY_ASSERTIONS
+            if (child.Parent != this)
+                Debug.LogWarning($"Attempting to remove a state which is not a child of this {GetType().Name}." +
+                    $" This will remove the child from its actual parent so you should directly call" +
+                    $" child.{nameof(child.Destroy)} or child.{nameof(child.SetParent)}(null, -1) instead." +
+                    $"\n• Child: {child}" +
+                    $"\n• Removing From: {this}" +
+                    $"\n• Actual Parent: {child.Parent}",
+                    Graph?.Component as Object);
+#endif
+
+            if (destroy)
+                child.Destroy();
+            else
+                child.SetParent(null);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Replaces the `child` at the specified `index`.</summary>
+        public virtual void Set(int index, AnimancerState child, bool destroyPrevious)
+        {
+#if UNITY_ASSERTIONS
+            if ((uint)index >= _ChildCount)
+            {
+                MarkAsUsed(this);
+                MarkAsUsed(child);
+                throw new IndexOutOfRangeException(
+                    $"Invalid child index. Must be 0 <= index < {nameof(ChildCount)} ({ChildCount}).");
+            }
+#endif
+
+            if (child.Parent != null)
+                child.SetParent(null);
+
+            var previousChild = ChildStates[index];
+            previousChild.SetParentInternal(null);
+
+            child.SetGraph(Graph);
+            ChildStates[index] = child;
+            child.SetParentInternal(this, index);
+            child.IsPlaying = IsPlaying;
+
+            if (Graph != null)
+            {
+                Graph._PlayableGraph.Disconnect(_Playable, index);
+                ConnectChildUnsafe(index, child);
+            }
+
+            child.CopyIKFlags(this);
+
+            if (destroyPrevious)
+                previousChild.Destroy();
+
+#if UNITY_ASSERTIONS
+            _CachedToString = null;
+#endif
+        }
+
+        /// <summary>Replaces the child at the specified `index` with a new <see cref="ClipState"/>.</summary>
+        public ClipState Set(int index, AnimationClip clip, bool destroyPrevious)
+        {
+            var child = new ClipState(clip);
+            Set(index, child, destroyPrevious);
+            return child;
+        }
+
+        /// <summary>Replaces the child at the specified `index` with a <see cref="ITransition.CreateState"/>.</summary>
+        public AnimancerState Set(int index, ITransition transition, bool destroyPrevious)
+        {
+            var child = transition.CreateStateAndApply(Graph);
+            Set(index, child, destroyPrevious);
+            return child;
+        }
+
+        /// <summary>Calls one of the other <see cref="Set(int, object, bool)"/> overloads as appropriate for the `child`.</summary>
+        public AnimancerState Set(int index, object child, bool destroyPrevious)
+        {
+            if (child is AnimationClip clip)
+                return Set(index, clip, destroyPrevious);
+
+            if (child is ITransition transition)
+                return Set(index, transition, destroyPrevious);
+
+            if (child is AnimancerState state)
+            {
+                Set(index, state, destroyPrevious);
+                return state;
+            }
+
+            MarkAsUsed(this);
+            throw new ArgumentException(
+                $"Failed to {nameof(Set)} '{AnimancerUtilities.ToStringOrNull(child)}'" +
+                $" as child of '{this}' because it isn't an" +
+                $" {nameof(AnimationClip)}, {nameof(ITransition)}, or {nameof(AnimancerState)}.");
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Returns the index of the specified `child` state.</summary>
+        public int IndexOf(AnimancerState child)
+            => Array.IndexOf(ChildStates, child, 0, _ChildCount);
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Destroys all <see cref="ChildStates"/> connected to this mixer.
+        /// This operation cannot be undone.
+        /// </summary>
+        public void DestroyChildren()
+        {
+            for (int i = _ChildCount - 1; i >= 0; i--)
+                ChildStates[i].Destroy();
+
+            Array.Clear(ChildStates, 0, _ChildCount);
+            _ChildCount = 0;
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Updates
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        protected internal override void UpdateEvents()
+            => UpdateEventsRecursive(this);
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Inverse Kinematics
+        /************************************************************************************************************************/
+
+        private bool _ApplyAnimatorIK;
+
+        /// <inheritdoc/>
+        public override bool ApplyAnimatorIK
+        {
+            get => _ApplyAnimatorIK;
+            set => base.ApplyAnimatorIK = _ApplyAnimatorIK = value;
+        }
+
+        /************************************************************************************************************************/
+
+        private bool _ApplyFootIK;
+
+        /// <inheritdoc/>
+        public override bool ApplyFootIK
+        {
+            get => _ApplyFootIK;
+            set => base.ApplyFootIK = _ApplyFootIK = value;
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Other Methods
+        /************************************************************************************************************************/
+
+#if UNITY_ASSERTIONS
+        /// <summary>[Assert-Only] A string built by <see cref="ToString"/> to describe this mixer.</summary>
+        private string _CachedToString;
+#endif
+
+        /// <summary>
+        /// Returns a string describing the type of this mixer and the name of states connected to it.
+        /// </summary>
+        public override string ToString()
+        {
+#if UNITY_ASSERTIONS
+            if (NameCache.TryToString(DebugName, out var name))
+                return name;
+
+            if (_CachedToString != null)
+                return _CachedToString;
+#endif
+
+            // Gather child names.
+            var childNames = ListPool.Acquire<string>();
+            var allSimple = true;
+            for (int i = 0; i < _ChildCount; i++)
+            {
+                var state = ChildStates[i];
+                if (state == null)
+                    continue;
+
+                if (state.MainObject != null)
+                {
+                    childNames.Add(state.MainObject.name);
+                }
+                else
+                {
+                    childNames.Add(state.ToString());
+                    allSimple = false;
+                }
+            }
+
+            // If they all have a main object, check if they all have the same prefix so it doesn't need to be repeated.
+            int prefixLength = 0;
+            var count = childNames.Count;
+            if (count <= 1 || !allSimple)
+            {
+                prefixLength = 0;
+            }
+            else
+            {
+                var prefix = childNames[0];
+                var shortest = prefixLength = prefix.Length;
+
+                for (int iName = 0; iName < count; iName++)
+                {
+                    var childName = childNames[iName];
+
+                    if (shortest > childName.Length)
+                    {
+                        shortest = prefixLength = childName.Length;
+                    }
+
+                    for (int iCharacter = 0; iCharacter < prefixLength; iCharacter++)
+                    {
+                        if (childName[iCharacter] != prefix[iCharacter])
+                        {
+                            prefixLength = iCharacter;
+                            break;
+                        }
+                    }
+                }
+
+                if (prefixLength < 3 ||// Less than 3 characters probably isn't an intentional prefix.
+                    prefixLength >= shortest)
+                    prefixLength = 0;
+            }
+
+            // Build the parent name.
+            var parentName = StringBuilderPool.Instance.Acquire();
+
+            var type = GetType().Name;
+            if (type.EndsWith("State"))
+                parentName.Append(type, 0, type.Length - 5);
+            else
+                parentName.Append(type);
+
+            parentName.Append('(');
+
+            if (count > 0)
+            {
+                if (prefixLength > 0)
+                    parentName.Append(childNames[0], 0, prefixLength).Append('[');
+
+                for (int i = 0; i < count; i++)
+                {
+                    if (i > 0)
+                        parentName.Append(", ");
+
+                    var childName = childNames[i];
+                    parentName.Append(childName, prefixLength, childName.Length - prefixLength);
+                }
+
+                parentName.Append(']');
+            }
+            ListPool.Release(childNames);
+
+            parentName.Append(')');
+
+            var result = parentName.ReleaseToString();
+
+#if UNITY_ASSERTIONS
+            _CachedToString = result;
+#endif
+
+            return result;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override void GatherAnimationClips(ICollection<AnimationClip> clips)
+            => clips.GatherFromSource(ChildStates);
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/Nodes/ParentState.cs.meta

@@ -0,0 +1,13 @@
+fileFormatVersion: 2
+guid: 053b822d8f58e2d4e977ce274eb61e6f
+timeCreated: 1515060256
+licenseType: Store
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.kybernetik.animancer/Runtime/Core/Nodes/PlayableAssetState.cs

@@ -0,0 +1,442 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+using UnityEngine;
+using UnityEngine.Animations;
+using UnityEngine.Audio;
+using UnityEngine.Playables;
+using Object = UnityEngine.Object;
+
+namespace Animancer
+{
+    /// <summary>[Pro-Only] An <see cref="AnimancerState"/> which plays a <see cref="PlayableAsset"/>.</summary>
+    /// <remarks>
+    /// <strong>Documentation:</strong>
+    /// <see href="https://kybernetik.com.au/animancer/docs/manual/timeline">
+    /// Timeline</see>
+    /// </remarks>
+    /// https://kybernetik.com.au/animancer/api/Animancer/PlayableAssetState
+    public class PlayableAssetState : AnimancerState
+    {
+        /************************************************************************************************************************/
+        #region Fields and Properties
+        /************************************************************************************************************************/
+
+        /// <summary>The <see cref="PlayableAsset"/> which this state plays.</summary>
+        private PlayableAsset _Asset;
+
+        /// <summary>The <see cref="PlayableAsset"/> which this state plays.</summary>
+        public PlayableAsset Asset
+        {
+            get => _Asset;
+            set => ChangeMainObject(ref _Asset, value);
+        }
+
+        /// <summary>The <see cref="PlayableAsset"/> which this state plays.</summary>
+        public override Object MainObject
+        {
+            get => _Asset;
+            set => _Asset = (PlayableAsset)value;
+        }
+
+#if UNITY_EDITOR
+        /// <inheritdoc/>
+        public override Type MainObjectType
+            => typeof(PlayableAsset);
+#endif
+
+        /************************************************************************************************************************/
+
+        private float _Length;
+
+        /// <summary>The <see cref="PlayableAsset.duration"/> (cached on initialization).</summary>
+        public override float Length
+            => _Length;
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override float Speed
+        {
+            get => base.Speed;
+            set
+            {
+                base.Speed = value;
+
+                for (int i = Outputs.Count - 1; i >= 0; i--)
+                    Outputs[i].GetSourcePlayable().SetSpeed(value);
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override AnimancerEvent.DispatchInfo GetEventDispatchInfo()
+        {
+            var length = _Length;
+            return new(
+                length,
+                length != 0 ? Time / length : 0,
+                false);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        protected override void OnSetIsPlaying()
+        {
+            if (!_Playable.IsValid())
+                return;
+
+            var inputCount = _Playable.GetInputCount();
+            for (int i = 0; i < inputCount; i++)
+            {
+                var playable = _Playable.GetInput(i);
+                if (!playable.IsValid())
+                    continue;
+
+                if (IsPlaying)
+                    playable.Play();
+                else
+                    playable.Pause();
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>IK cannot be dynamically enabled on a <see cref="PlayableAssetState"/>.</summary>
+        public override void CopyIKFlags(AnimancerNodeBase copyFrom) { }
+
+        /************************************************************************************************************************/
+
+        /// <summary>IK cannot be dynamically enabled on a <see cref="PlayableAssetState"/>.</summary>
+        public override bool ApplyAnimatorIK
+        {
+            get => false;
+            set
+            {
+#if UNITY_ASSERTIONS
+                if (value)
+                    OptionalWarning.UnsupportedIK.Log(
+                        $"IK cannot be dynamically enabled on a {nameof(PlayableAssetState)}.", Graph?.Component);
+#endif
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>IK cannot be dynamically enabled on a <see cref="PlayableAssetState"/>.</summary>
+        public override bool ApplyFootIK
+        {
+            get => false;
+            set
+            {
+#if UNITY_ASSERTIONS
+                if (value)
+                    OptionalWarning.UnsupportedIK.Log(
+                        $"IK cannot be dynamically enabled on a {nameof(PlayableAssetState)}.", Graph?.Component);
+#endif
+            }
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Methods
+        /************************************************************************************************************************/
+
+        /// <summary>Creates a new <see cref="PlayableAssetState"/> to play the `asset`.</summary>
+        /// <exception cref="ArgumentNullException">The `asset` is null.</exception>
+        public PlayableAssetState(PlayableAsset asset)
+        {
+            if (asset == null)
+                throw new ArgumentNullException(nameof(asset));
+
+            _Asset = asset;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        protected override void CreatePlayable(out Playable playable)
+        {
+            playable = _Asset.CreatePlayable(Graph._PlayableGraph, Graph.Component.gameObject);
+            playable.SetDuration(9223372.03685477);// https://github.com/KybernetikGames/animancer/issues/111
+
+            _Length = (float)_Asset.duration;
+
+            if (!_HasInitializedBindings)
+                InitializeBindings();
+        }
+
+        /************************************************************************************************************************/
+
+        private readonly List<PlayableOutput>
+            Outputs = new();
+
+        private IList<Object> _Bindings;
+        private bool _HasInitializedBindings;
+
+        /************************************************************************************************************************/
+
+        /// <summary>The objects controlled by each track in the asset.</summary>
+        public IList<Object> Bindings
+        {
+            get => _Bindings;
+            set
+            {
+                DestroyBoundOutputs(false);
+                _Bindings = value;
+                InitializeBindings();
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Sets the <see cref="Bindings"/>.</summary>
+        public void SetBindings(params Object[] bindings)
+        {
+            Bindings = bindings;
+        }
+
+        /************************************************************************************************************************/
+
+        private void InitializeBindings()
+        {
+            if (Graph == null)
+                return;
+
+            _HasInitializedBindings = true;
+
+            Validate.AssertPlayable(this);
+
+            var graph = Graph._PlayableGraph;
+
+            var bindableIndex = 0;
+            var bindableCount = _Bindings != null
+                ? _Bindings.Count
+                : 0;
+
+            var speed = Speed;
+
+            foreach (var binding in _Asset.outputs)
+            {
+                GetBindingDetails(binding, out var trackName, out var trackType, out var isMarkers);
+
+                var bindable = bindableIndex < bindableCount
+                    ? _Bindings[bindableIndex]
+                    : null;
+
+#if UNITY_ASSERTIONS
+                if (!isMarkers &&
+                    trackType != null &&
+                    bindable != null &&
+                    !trackType.IsAssignableFrom(bindable.GetType()))
+                {
+                    Debug.LogError(
+                        $"Binding Type Mismatch: bindings[{bindableIndex}] is '{bindable}'" +
+                        $" but should be a {trackType.FullName} for {trackName}",
+                        Graph.Component as Object);
+                    bindableIndex++;
+                    continue;
+                }
+#endif
+
+                var playable = _Playable.GetInput(bindableIndex);
+
+                if (speed != 1)
+                    playable.SetSpeed(speed);
+
+                if (trackType == typeof(Animator))// AnimationTrack.
+                {
+                    if (bindable != null)
+                    {
+#if UNITY_ASSERTIONS
+                        if (bindable == Graph.Component?.Animator)
+                            Debug.LogError(
+                                $"{nameof(PlayableAsset)} tracks should not be bound to the same {nameof(Animator)} as" +
+                                $" Animancer. Leaving the binding of the first Animation Track empty will automatically" +
+                                $" apply its animation to the object being controlled by Animancer.",
+                                Graph.Component as Object);
+#endif
+
+                        var playableOutput = AnimationPlayableOutput.Create(graph, trackName, (Animator)bindable);
+                        playableOutput.SetReferenceObject(binding.sourceObject);
+                        playableOutput.SetSourcePlayable(playable);
+                        playableOutput.SetWeight(1);
+                        Outputs.Add(playableOutput);
+                    }
+                }
+#if UNITY_AUDIO
+                else if (trackType == typeof(AudioSource))// AudioTrack.
+                {
+                    if (bindable != null)
+                    {
+                        var playableOutput = AudioPlayableOutput.Create(graph, trackName, (AudioSource)bindable);
+                        playableOutput.SetReferenceObject(binding.sourceObject);
+                        playableOutput.SetSourcePlayable(playable);
+                        playableOutput.SetWeight(1);
+                        Outputs.Add(playableOutput);
+                    }
+                }
+#endif
+                else if (isMarkers)// Markers.
+                {
+                    var animancer = Graph.Component as Component;
+                    var playableOutput = ScriptPlayableOutput.Create(graph, trackName);
+                    playableOutput.SetReferenceObject(binding.sourceObject);
+                    playableOutput.SetSourcePlayable(playable);
+                    playableOutput.SetWeight(1);
+                    playableOutput.SetUserData(animancer);
+                    Outputs.Add(playableOutput);
+
+                    var receivers = ListPool.Acquire<INotificationReceiver>();
+                    animancer.GetComponents(receivers);
+                    for (int i = 0; i < receivers.Count; i++)
+                        playableOutput.AddNotificationReceiver(receivers[i]);
+                    ListPool.Release(receivers);
+
+                    continue;// Don't increment the bindingIndex.
+                }
+                else// ActivationTrack, ControlTrack, PlayableTrack, SignalTrack.
+                {
+                    var playableOutput = ScriptPlayableOutput.Create(graph, trackName);
+                    playableOutput.SetReferenceObject(binding.sourceObject);
+                    playableOutput.SetSourcePlayable(playable);
+                    playableOutput.SetWeight(1);
+                    playableOutput.SetUserData(bindable);
+                    if (bindable is INotificationReceiver receiver)
+                        playableOutput.AddNotificationReceiver(receiver);
+                    Outputs.Add(playableOutput);
+                }
+
+                bindableIndex++;
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Gathers details about the `binding`.</summary>
+        public static void GetBindingDetails(
+            PlayableBinding binding,
+            out string name,
+            out Type type,
+            out bool isMarkers)
+        {
+            name = binding.streamName;
+            type = binding.outputTargetType;
+            isMarkers = type == typeof(GameObject) && name == "Markers";
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override void SetWeight(float value)
+        {
+            base.SetWeight(value);
+
+            for (int i = Outputs.Count - 1; i >= 0; i--)
+                Outputs[i].SetWeight(value);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override void Destroy()
+        {
+            _Asset = null;
+
+            DestroyBoundOutputs(true);
+
+            base.Destroy();
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Destroys all of the outputs created for the <see cref="Bindings"/>
+        /// and optionally the state playable itself.
+        /// </summary>
+        public void DestroyBoundOutputs(bool destroyStatePlayable)
+        {
+            if (Graph == null)
+                return;
+
+            var graph = Graph._PlayableGraph;
+            if (!graph.IsValid())
+                return;
+
+            for (int i = Outputs.Count - 1; i >= 0; i--)
+            {
+                var output = Outputs[i];
+
+                var playable = output.GetSourcePlayable();
+                if (playable.IsValid())
+                    graph.DestroySubgraph(playable);
+
+                graph.DestroyOutput(output);
+            }
+
+            Outputs.Clear();
+
+            if (destroyStatePlayable && _Playable.IsValid())
+                graph.DestroySubgraph(_Playable);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override AnimancerState Clone(CloneContext context)
+        {
+            var asset = context.GetCloneOrOriginal(_Asset);
+            var clone = new PlayableAssetState(asset);
+            clone.CopyFrom(this, context);
+            return clone;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        protected override void AppendDetails(StringBuilder text, string separator)
+        {
+            base.AppendDetails(text, separator);
+
+            text.Append(separator)
+                .Append($"{nameof(Bindings)}: ");
+
+            int count;
+            if (_Bindings == null)
+            {
+                text.Append("Null");
+                count = 0;
+            }
+            else
+            {
+                count = _Bindings.Count;
+                text.Append('[')
+                    .Append(count)
+                    .Append(']');
+            }
+
+            text.Append(_HasInitializedBindings
+                ? " (Initialized)"
+                : " (Not Initialized)");
+
+            for (int i = 0; i < count; i++)
+            {
+                text.Append(separator)
+                    .Append($"{nameof(Bindings)}[")
+                    .Append(i)
+                    .Append("] = ")
+                    .Append(AnimancerUtilities.ToStringOrNull(_Bindings[i]));
+            }
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/Nodes/PlayableAssetState.cs.meta

@@ -0,0 +1,13 @@
+fileFormatVersion: 2
+guid: c8771e9c8ab67844b8e5cf90e14bf90e
+timeCreated: 1515060256
+licenseType: Store
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.kybernetik.animancer/Runtime/Core/Nodes/SequenceState.cs

@@ -0,0 +1,375 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+#pragma warning disable CS0649 // Field is never assigned to, and will always have its default value.
+
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace Animancer
+{
+    /// <summary>[Pro-Only]
+    /// An <see cref="AnimancerState"/> which plays a sequence of other states.
+    /// </summary>
+    /// https://kybernetik.com.au/animancer/api/Animancer/SequenceState
+    /// 
+    public partial class SequenceState : ParentState,
+        ICopyable<SequenceState>,
+        IUpdatable
+    {
+        /************************************************************************************************************************/
+        #region Fields and Properties
+        /************************************************************************************************************************/
+
+        private double[] _TimeOffsets = Array.Empty<double>();
+        private double[] _FadeEndTimes = Array.Empty<double>();
+        private double[] _StateEndTimes = Array.Empty<double>();
+
+        /// <summary>The index of the child state which is active at the current time.</summary>
+        private int _ActiveChildIndex;
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override float Length
+            => ChildCount > 0
+            ? (float)_StateEndTimes[ChildCount - 1]
+            : 0;
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override double RawTime
+        {
+            get => base.RawTime;
+            set
+            {
+                base.RawTime = value;
+
+                if (ChildCount == 0)
+                    return;
+
+                var activeChildIndex = GetActiveChildIndex(value);
+                SetActiveChildIndex(activeChildIndex);
+
+                for (int i = 0; i < ChildCount; i++)
+                {
+                    var child = ChildStates[i];
+
+                    var childTime = value;
+                    if (i > 0)
+                        childTime -= _StateEndTimes[i - 1];
+
+                    childTime *= child.Speed;
+
+                    child.TimeD = childTime + _TimeOffsets[i];
+                }
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override void MoveTime(double time, bool normalized)
+        {
+            base.MoveTime(time, normalized);
+
+            for (int i = 0; i < ChildCount; i++)
+            {
+                var child = ChildStates[i];
+
+                var childTime = time;
+                if (i > 0)
+                    childTime -= _StateEndTimes[i - 1];
+
+                childTime *= child.Speed;
+
+                child.MoveTime(childTime + _TimeOffsets[i], normalized);
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Sequences don't loop.</summary>
+        /// <remarks>
+        /// If the last state in the sequence is set to loop it will do so,
+        /// but the rest of the sequence won't replay automatically.
+        /// </remarks>
+        public override bool IsLooping
+            => false;
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Initialisation
+        /************************************************************************************************************************/
+
+        /// <summary>Replaces the child states with new ones created from the `transitions`.</summary>
+        public void Set(params ITransition[] transitions)
+            => Set((IList<ITransition>)transitions);
+
+        /// <summary>Replaces the child states with new ones created from the `transitions`.</summary>
+        public void Set(IList<ITransition> transitions)
+        {
+            var oldChildCount = ChildCount;
+            var newChildCount = transitions.Count;
+
+            ChildCapacity = newChildCount;
+
+            for (int i = 0; i < newChildCount; i++)
+            {
+                var transition = transitions[i];
+                var state = transition.CreateStateAndApply(Graph);
+                state.IsPlaying = IsPlaying;
+
+                if (i < oldChildCount)
+                    Set(i, state, true);
+                else
+                    Add(state);
+
+                _FadeEndTimes[i] += transition.FadeDuration;
+            }
+
+            while (oldChildCount > newChildCount)
+                Remove(--oldChildCount, true);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        protected internal override void OnAddChild(AnimancerState child)
+        {
+            base.OnAddChild(child);
+            GatherChildDetails(child);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Gathers the timing details of a newly added `child` state.</summary>
+        private void GatherChildDetails(AnimancerState child)
+        {
+            var index = child.Index;
+
+            if (index == 0)
+                child.Weight = 1;
+
+            _TimeOffsets[index] = child.TimeD;
+
+            var startTime = GetStartTime(index);
+
+            _FadeEndTimes[index] = startTime;
+
+            var length = child.RemainingDuration;
+            if (length < 0)
+                length = 0;
+
+            startTime += length;
+
+            _StateEndTimes[index] = startTime;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override AnimancerState Add(ITransition transition)
+        {
+            var child = base.Add(transition);
+
+            _FadeEndTimes[child.Index] += transition.FadeDuration;
+
+            return child;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Adds the `child` to the end of this sequence.</summary>
+        public void Add(AnimancerState child, float fadeDuration)
+        {
+            Add(child);
+
+            _FadeEndTimes[child.Index] += fadeDuration;
+        }
+
+        /// <summary>Adds the `clip` to the end of this sequence.</summary>
+        public void Add(AnimationClip clip, float fadeDuration)
+        {
+            var child = Add(clip);
+
+            _FadeEndTimes[child.Index] += fadeDuration;
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Execution
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        protected override void OnChildCapacityChanged()
+        {
+            base.OnChildCapacityChanged();
+
+            var capacity = ChildCapacity;
+            Array.Resize(ref _TimeOffsets, capacity);
+            Array.Resize(ref _FadeEndTimes, capacity);
+            Array.Resize(ref _StateEndTimes, capacity);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        int IUpdatable.UpdatableIndex { get; set; } = IUpdatable.List.NotInList;
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        protected override void OnSetIsPlaying()
+        {
+            base.OnSetIsPlaying();
+
+            var isPlaying = IsPlaying;
+            var childStates = ChildStates;
+            for (int i = 0; i < ChildCount; i++)
+                childStates[i].IsPlaying = isPlaying;
+
+            if (IsPlaying)
+                Graph.RequirePreUpdate(this);
+            else
+                Graph.CancelPreUpdate(this);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override void Destroy()
+        {
+            base.Destroy();
+            Graph.CancelPreUpdate(this);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Called every frame while this state is playing to control its children.
+        /// </summary>
+        public virtual void Update()
+        {
+            var time = Time;
+
+            var activeChildIndex = _ActiveChildIndex;
+            if (Speed >= 0)
+            {
+                while (activeChildIndex < ChildCount - 1 && time > _StateEndTimes[activeChildIndex])
+                    activeChildIndex++;
+            }
+            else
+            {
+                while (activeChildIndex > 0 && time > _StateEndTimes[activeChildIndex - 1])
+                    activeChildIndex--;
+            }
+
+            SetActiveChildIndex(activeChildIndex);
+
+            var startTime = GetStartTime(activeChildIndex);
+
+            var endFadeTime = _FadeEndTimes[activeChildIndex];
+
+            if (activeChildIndex == 0 || time > endFadeTime)
+            {
+                ChildStates[activeChildIndex].Weight = 1;
+
+                if (activeChildIndex > 0)
+                    ChildStates[activeChildIndex - 1].Weight = 0;
+            }
+            else
+            {
+                var weight = Mathf.InverseLerp((float)startTime, (float)endFadeTime, time);
+
+                ChildStates[activeChildIndex].Weight = weight;
+                ChildStates[activeChildIndex - 1].Weight = 1 - weight;
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Calculates the indices of the `first` and `last` child states
+        /// which should be active at the specified `time`.
+        /// </summary>
+        public int GetActiveChildIndex(double time)
+        {
+            var index = Array.BinarySearch(_StateEndTimes, time);
+
+            if (index < 0)
+                index = ~index;
+
+            if (index >= ChildCount)
+                index = ChildCount - 1;
+
+            return index;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Clears the weights of any active chhildren and sets the newly active child.</summary>
+        private void SetActiveChildIndex(int index)
+        {
+            if (_ActiveChildIndex == index)
+                return;
+
+            ChildStates[_ActiveChildIndex].Weight = 0;
+
+            if (_ActiveChildIndex > 0)
+                ChildStates[_ActiveChildIndex - 1].Weight = 0;
+
+            _ActiveChildIndex = index;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Gets the time when the specified child starts relative to the start of this sequence.</summary>
+        public double GetStartTime(int childIndex)
+            => childIndex > 0
+            ? _StateEndTimes[childIndex - 1]
+            : 0;
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Copying
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override AnimancerState Clone(CloneContext context)
+        {
+            var clone = new SequenceState();
+            clone.CopyFrom(this, context);
+            return clone;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public sealed override void CopyFrom(ParentState copyFrom, CloneContext context)
+            => this.CopyFromBase(copyFrom, context);
+
+        /// <inheritdoc/>
+        public virtual void CopyFrom(SequenceState copyFrom, CloneContext context)
+        {
+            base.CopyFrom(copyFrom, context);
+
+            var childCount = Math.Min(copyFrom.ChildCount, ChildCount);
+
+            Array.Copy(copyFrom._TimeOffsets, 0, _TimeOffsets, 0, childCount);
+            Array.Copy(copyFrom._FadeEndTimes, 0, _FadeEndTimes, 0, childCount);
+            Array.Copy(copyFrom._StateEndTimes, 0, _StateEndTimes, 0, childCount);
+
+            _ActiveChildIndex = copyFrom._ActiveChildIndex;
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/Nodes/SequenceState.cs.meta

@@ -0,0 +1,13 @@
+fileFormatVersion: 2
+guid: 7c8e97dddf2a0d246b4cdfe6319d1255
+timeCreated: 1515060256
+licenseType: Store
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.kybernetik.animancer/Runtime/Core/UpdatableListPlayable.cs

@@ -0,0 +1,60 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using UnityEngine.Playables;
+
+namespace Animancer
+{
+    /// <summary>
+    /// A <see cref="PlayableBehaviour"/> which executes <see cref="IUpdatable.Update"/>
+    /// on each item in an <see cref="IUpdatable.List"/> every frame.
+    /// </summary>
+    public class UpdatableListPlayable : PlayableBehaviour
+    {
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Since <see cref="ScriptPlayable{T}.Create(PlayableGraph, int)"/> needs to clone an existing instance,
+        /// we keep a static template to avoid allocating an extra garbage one every time.
+        /// This also means the fields can't be readonly because field initializers don't run on the clone.
+        /// </summary>
+        private static readonly UpdatableListPlayable Template = new();
+
+        /************************************************************************************************************************/
+
+        /// <summary>The <see cref="AnimancerGraph"/> this behaviour is connected to.</summary>
+        private AnimancerGraph _Graph;
+
+        /// <summary>Objects to be updated before time advances.</summary>
+        private IUpdatable.List _Updatables;
+
+        /************************************************************************************************************************/
+
+        /// <summary>Creates a new <see cref="UpdatableListPlayable"/>.</summary>
+        public static ScriptPlayable<UpdatableListPlayable> Create(
+            AnimancerGraph graph,
+            int inputCount,
+            IUpdatable.List updatables)
+        {
+            var playable = ScriptPlayable<UpdatableListPlayable>.Create(graph._PlayableGraph, Template, inputCount);
+            var instance = playable.GetBehaviour();
+            instance._Graph = graph;
+            instance._Updatables = updatables;
+            return playable;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Internal] Calls <see cref="IUpdatable.Update"/> on everything added to this list.</summary>
+        /// <remarks>
+        /// Called by the <see cref="PlayableGraph"/> after the rest of the <see cref="Playable"/>s are evaluated.
+        /// </remarks>
+        public override void PrepareFrame(Playable playable, FrameData info)
+            => _Graph.UpdateAll(
+                _Updatables,
+                info.deltaTime * info.effectiveParentSpeed,
+                info.frameId);
+
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/UpdatableListPlayable.cs.meta

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Packages/com.kybernetik.animancer/Runtime/Core/Weighted Mask Layers.meta

@@ -0,0 +1,8 @@
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Packages/com.kybernetik.animancer/Runtime/Core/Weighted Mask Layers/WeightedMaskLayerList.cs

@@ -0,0 +1,128 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System;
+using Unity.Collections;
+using UnityEngine;
+using UnityEngine.Animations;
+
+namespace Animancer
+{
+    /// <summary>
+    /// A replacement for the default <see cref="AnimationLayerMixerPlayable"/> which uses custom
+    /// <see cref="BoneWeights"/> for each individual bone instead of just using an <see cref="AvatarMask"/>
+    /// to include or exclude them entirely.
+    /// </summary>
+    /// https://kybernetik.com.au/animancer/api/Animancer/WeightedMaskLayerList
+    public class WeightedMaskLayerList : AnimancerLayerList, IDisposable
+    {
+        /************************************************************************************************************************/
+
+        /// <summary>The objects being masked.</summary>
+        public readonly Transform[] Bones;
+
+        /// <summary>The job data.</summary>
+        private readonly WeightedMaskMixerJob _Job;
+
+        /************************************************************************************************************************/
+
+        /// <summary>The root motion weight of each layer.</summary>
+        public NativeArray<float> RootMotionWeights
+            => _Job.rootMotionWeights;
+
+        /************************************************************************************************************************/
+
+        /// <summary>The number of objects being masked (excluding the root bone).</summary>
+        public int BoneCount
+            => Bones.Length - 1;
+
+        /************************************************************************************************************************/
+
+        /// <summary>The blend weight of each of the <see cref="Bones"/>.</summary>
+        public NativeArray<float> BoneWeights
+            => _Job.boneWeights;
+
+        /************************************************************************************************************************/
+
+        /// <summary>Returns the index of the value corresponding to the 'bone' in the <see cref="BoneWeights"/> array.</summary>
+        public int IndexOf(Transform bone)
+            => Array.IndexOf(Bones, bone) - 1;// Index - 1 since the root is ignored.
+
+        /************************************************************************************************************************/
+
+        /// <summary>Creates a new <see cref="AnimancerGraph"/> and <see cref="WeightedMaskLayerList"/>.</summary>
+        /// <remarks>
+        /// This method can't be a constructor because it would need to
+        /// assign itself to the graph before being fully constructed.
+        /// </remarks>
+        public static WeightedMaskLayerList Create(Animator animator, int layerCount)
+        {
+            var graph = new AnimancerGraph();
+            var layers = new WeightedMaskLayerList(graph, animator, layerCount);
+            graph.Layers = layers;
+            return layers;
+        }
+
+        /// <summary>Creates a new <see cref="WeightedMaskLayerList"/>.</summary>
+        public WeightedMaskLayerList(AnimancerGraph graph, Animator animator, int layerCount)
+            : base(graph, layerCount)
+        {
+            if (layerCount < 2)
+                throw new ArgumentOutOfRangeException(
+                    nameof(layerCount),
+                    "Layer count must be at least 2 (Base + 1).");
+
+            graph.Layers = this;
+
+            Bones = animator.GetComponentsInChildren<Transform>(true);
+
+            var boneCount = BoneCount;
+
+            _Job = new WeightedMaskMixerJob()
+            {
+                boneTransforms = new(boneCount, Allocator.Persistent, NativeArrayOptions.UninitializedMemory),
+                boneWeights = new(boneCount * (layerCount - 1), Allocator.Persistent, NativeArrayOptions.ClearMemory),
+                layerCount = layerCount,
+                rootMotionWeights = new(layerCount, Allocator.Persistent, NativeArrayOptions.UninitializedMemory),
+            };
+
+            graph.Disposables.Add(this);
+
+            for (var i = 0; i < layerCount; i++)
+                _Job.rootMotionWeights[i] = 1;
+
+            for (var i = 0; i < boneCount; i++)
+            {
+                _Job.boneTransforms[i] = animator.BindStreamTransform(Bones[i + 1]);
+                _Job.boneWeights[i] = 1;
+            }
+
+            var playable = AnimationScriptPlayable.Create(graph, _Job, Capacity);
+            playable.SetProcessInputs(false);
+            Playable = playable;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        void IDisposable.Dispose()
+        {
+            _Job.rootMotionWeights.Dispose();
+            _Job.boneTransforms.Dispose();
+            _Job.boneWeights.Dispose();
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override AnimancerLayer Add()
+        {
+            if (Count >= Capacity)
+                throw new InvalidOperationException(
+                    $"{nameof(WeightedMaskLayerList)} doesn't support dynamically changing its layer count.");
+
+            return base.Add();
+        }
+
+        /************************************************************************************************************************/
+    }
+}

Packages/com.kybernetik.animancer/Runtime/Core/Weighted Mask Layers/WeightedMaskLayerList.cs.meta

@@ -0,0 +1,13 @@
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+guid: 48650aff8ff11364a9c5044d1722636f
+timeCreated: 1515060256
+licenseType: Store
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Packages/com.kybernetik.animancer/Runtime/Core/Weighted Mask Layers/WeightedMaskLayers.cs

@@ -0,0 +1,264 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System;
+using Unity.Collections;
+using UnityEngine;
+
+namespace Animancer
+{
+    /// <summary>
+    /// Replaces the default <see cref="AnimancerLayerMixerList"/>
+    /// with a <see cref="WeightedMaskLayerList"/>.
+    /// </summary>
+    /// https://kybernetik.com.au/animancer/api/Animancer/WeightedMaskLayers
+    [AddComponentMenu(Strings.MenuPrefix + "Weighted Mask Layers")]
+    [AnimancerHelpUrl(typeof(WeightedMaskLayers))]
+    [DefaultExecutionOrder(-10000)]// Awake before anything else initializes Animancer.
+    public class WeightedMaskLayers : MonoBehaviour
+    {
+        /************************************************************************************************************************/
+
+        [SerializeField] private AnimancerComponent _Animancer;
+
+        /// <summary>[<see cref="SerializeField"/>] The component to apply the layers to.</summary>
+        public AnimancerComponent Animancer
+            => _Animancer;
+
+        /************************************************************************************************************************/
+
+        [SerializeField] private WeightedMaskLayersDefinition _Definition;
+
+        /// <summary>[<see cref="SerializeField"/>]
+        /// The definition of transforms to control and weights to apply to them.
+        /// </summary>
+        public ref WeightedMaskLayersDefinition Definition
+            => ref _Definition;
+
+        /************************************************************************************************************************/
+
+        [SerializeField] private int _LayerCount = 2;
+
+        /// <summary>[<see cref="SerializeField"/>] The number of layers (minimum 2).</summary>
+        public ref int LayerCount
+            => ref _LayerCount;
+
+        /************************************************************************************************************************/
+
+        /// <summary>The layer list created at runtime and assigned to <see cref="AnimancerGraph.Layers"/>.</summary>
+        public WeightedMaskLayerList Layers { get; protected set; }
+
+        /************************************************************************************************************************/
+
+        /// <summary>The index of each of the <see cref="WeightedMaskLayersDefinition.Transforms"/>.</summary>
+        public int[] Indices { get; protected set; }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Finds the <see cref="Animancer"/> reference if it was missing.</summary>
+        protected virtual void OnValidate()
+        {
+            gameObject.GetComponentInParentOrChildren(ref _Animancer);
+
+            if (LayerCount < 2)
+                LayerCount = 2;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Initializes the <see cref="Layers"/> and applies the default group weights.</summary>
+        protected virtual void Awake()
+        {
+            if (Definition == null ||
+                !Definition.IsValid)
+                return;
+
+            if (_Animancer == null)
+                TryGetComponent(out _Animancer);
+
+            Layers = WeightedMaskLayerList.Create(_Animancer.Animator, LayerCount);
+            _Animancer.InitializeGraph(Layers.Graph);
+
+            Indices = Definition.CalculateIndices(Layers);
+
+            for (int i = 1; i < LayerCount; i++)// Start at 1.
+                SetWeights(i, 0);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Applies the weights of the specified group to the specified layer.</summary>
+        public void SetWeights(int layerIndex, int groupIndex)
+        {
+            Definition.AssertGroupIndex(groupIndex);
+
+            var boneWeights = Layers.BoneWeights;
+            var definitionWeights = Definition.Weights;
+
+            var layerIndexOffset = (layerIndex - 1) * Layers.BoneCount;
+            var groupDefinitionStart = groupIndex * Indices.Length;
+
+            for (int i = 0; i < Indices.Length; i++)
+            {
+                var index = Indices[i];
+                if (index < 0)
+                    continue;
+
+                var weight = definitionWeights[groupDefinitionStart + i];
+                boneWeights[layerIndexOffset + index] = weight;
+            }
+
+            var rootMotionWeights = Layers.RootMotionWeights;
+            rootMotionWeights[layerIndex] = Definition.RootMotionWeights[groupIndex];
+        }
+
+        /************************************************************************************************************************/
+
+        private Fade _Fade;
+
+        /// <summary>Fades the weights towards the specified group.</summary>
+        public void FadeWeights(
+            int layerIndex,
+            int groupIndex,
+            float fadeDuration,
+            Func<float, float> easing = null)
+        {
+            if (fadeDuration > 0)
+            {
+                _Fade ??= new();
+                _Fade.Start(this, layerIndex, groupIndex, fadeDuration, easing);
+            }
+            else
+            {
+                SetWeights(layerIndex, groupIndex);
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>An <see cref="IUpdatable"/> which fades <see cref="WeightedMaskLayers"/> over time.</summary>
+        /// https://kybernetik.com.au/animancer/api/Animancer/Fade
+        public class Fade : Updatable
+        {
+            /************************************************************************************************************************/
+
+            private NativeArray<float> _CurrentWeights;
+            private NativeArray<float> _CurrentRootMotionWeights;
+            private float[] _OriginalWeights;
+            private WeightedMaskLayers _Layers;
+            private int _LayerIndex;
+            private int _LayerIndexOffset;
+            private int _TargetWeightIndex;
+            private float _OriginalRootMotionWeight;
+            private float _TargetRootMotionWeight;
+            private Func<float, float> _Easing;
+
+            /// <summary>The amount of time that has passed since the start of this fade (in seconds).</summary>
+            public float ElapsedTime;
+
+            /// <summary>The total amount of time this fade will take (in seconds).</summary>
+            public float Duration;
+
+            /************************************************************************************************************************/
+
+            /// <summary>Initializes this fade and registers it to receive updates.</summary>
+            public void Start(
+                WeightedMaskLayers layers,
+                int layerIndex,
+                int groupIndex,
+                float duration,
+                Func<float, float> easing = null)
+            {
+                layers.Definition.AssertGroupIndex(groupIndex);
+
+                _CurrentWeights = layers.Layers.BoneWeights;
+                _CurrentRootMotionWeights = layers.Layers.RootMotionWeights;
+                _OriginalRootMotionWeight = _CurrentRootMotionWeights[layerIndex];
+                _TargetRootMotionWeight = layers.Definition.RootMotionWeights[groupIndex];
+                _Easing = easing;
+                _Layers = layers;
+                _LayerIndex = layerIndex;
+                _TargetWeightIndex = layers.Definition.IndexOf(groupIndex, 0);
+                Duration = duration;
+
+                _LayerIndexOffset = (layerIndex - 1) * layers.Layers.BoneCount;
+
+                var indices = _Layers.Indices;
+                AnimancerUtilities.SetLength(ref _OriginalWeights, indices.Length);
+                for (int i = 0; i < indices.Length; i++)
+                {
+                    var index = _LayerIndexOffset + indices[i];
+                    _OriginalWeights[i] = _CurrentWeights[index];
+                }
+
+                ElapsedTime = 0;
+
+                layers.Layers.Graph.RequirePreUpdate(this);
+            }
+
+            /************************************************************************************************************************/
+
+            /// <inheritdoc/>
+            public override void Update()
+            {
+                ElapsedTime += AnimancerGraph.DeltaTime;
+                if (ElapsedTime < Duration)
+                {
+                    ApplyFade(ElapsedTime / Duration);
+                }
+                else
+                {
+                    ApplyTargetWeights();
+
+                    AnimancerGraph.Current.CancelPreUpdate(this);
+                }
+            }
+
+            /************************************************************************************************************************/
+
+            /// <summary>Recalculates the weights by interpolating based on `t`.</summary>
+            private void ApplyFade(float t)
+            {
+                if (_Easing != null)
+                    t = _Easing(t);
+
+                var targetWeights = _Layers.Definition.Weights;
+                var indices = _Layers.Indices;
+                var boneWeights = _CurrentWeights;
+
+                for (int i = 0; i < indices.Length; i++)
+                {
+                    var index = _LayerIndexOffset + indices[i];
+                    var from = _OriginalWeights[i];
+                    var to = targetWeights[_TargetWeightIndex + i];
+                    boneWeights[index] = Mathf.LerpUnclamped(from, to, t);
+                }
+
+                _CurrentRootMotionWeights[_LayerIndex] = Mathf.LerpUnclamped(
+                    _OriginalRootMotionWeight,
+                    _TargetRootMotionWeight,
+                    t);
+            }
+
+            /// <summary>Recalculates the target weights.</summary>
+            private void ApplyTargetWeights()
+            {
+                var targetWeights = _Layers.Definition.Weights;
+                var indices = _Layers.Indices;
+                var boneWeights = _CurrentWeights;
+
+                for (int i = 0; i < indices.Length; i++)
+                {
+                    var index = _LayerIndexOffset + indices[i];
+                    var to = targetWeights[_TargetWeightIndex + i];
+                    boneWeights[index] = to;
+                }
+
+                _CurrentRootMotionWeights[_LayerIndex] = _TargetRootMotionWeight;
+            }
+
+            /************************************************************************************************************************/
+        }
+
+        /************************************************************************************************************************/
+    }
+}

Packages/com.kybernetik.animancer/Runtime/Core/Weighted Mask Layers/WeightedMaskLayers.cs.meta

@@ -0,0 +1,13 @@
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Packages/com.kybernetik.animancer/Runtime/Core/Weighted Mask Layers/WeightedMaskLayersDefinition.cs

@@ -0,0 +1,386 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System;
+using System.Runtime.CompilerServices;
+using UnityEngine;
+
+namespace Animancer
+{
+    /// <summary>Serializable data which defines how to control a <see cref="WeightedMaskLayerList"/>.</summary>
+    /// https://kybernetik.com.au/animancer/api/Animancer/WeightedMaskLayersDefinition
+    [Serializable]
+    public class WeightedMaskLayersDefinition :
+        ICopyable<WeightedMaskLayersDefinition>,
+        IEquatable<WeightedMaskLayersDefinition>
+#if UNITY_EDITOR
+        , ISerializationCallbackReceiver
+#endif
+    {
+        /************************************************************************************************************************/
+
+        /// <summary>The name of the serialized backing field of <see cref="Transforms"/>.</summary>
+        public const string
+            TransformsField = nameof(_Transforms);
+
+        [SerializeField]
+        private Transform[] _Transforms;
+
+        /// <summary><see cref="Transform"/>s being controlled by this definition.</summary>
+        public ref Transform[] Transforms
+            => ref _Transforms;
+
+        /************************************************************************************************************************/
+
+        /// <summary>The name of the serialized backing field of <see cref="Weights"/>.</summary>
+        public const string
+            WeightsField = nameof(_Weights);
+
+        [SerializeField]
+        private float[] _Weights;
+
+        /// <summary>Groups of weights which will be applied to the <see cref="Transforms"/>.</summary>
+        /// <remarks>
+        /// This is a flattened 2D array containing groups of target weights corresponding to the transforms.
+        /// With n transforms, indices 0 to n-1 are Group 0, n to n*2-1 are Group 1, etc.
+        /// </remarks>
+        public ref float[] Weights
+            => ref _Weights;
+
+        /************************************************************************************************************************/
+
+        [SerializeField]
+        private float[] _RootMotionWeights;
+
+        /// <summary>Each group has a multiplier for the Root Motion output of any layer the group is applied to.</summary>
+        public ref float[] RootMotionWeights
+            => ref _RootMotionWeights;
+
+        /************************************************************************************************************************/
+
+        /// <summary>The number of weight groups in this definition.</summary>
+        public int GroupCount
+        {
+            get => _Transforms == null || _Transforms.Length == 0 || _Weights == null
+                ? 0
+                : _Weights.Length / _Transforms.Length;
+            set
+            {
+                if (_Transforms != null && value > 0)
+                {
+                    Array.Resize(ref _Weights, _Transforms.Length * value);
+                    Array.Resize(ref _RootMotionWeights, value);
+                }
+                else
+                {
+                    _Weights = Array.Empty<float>();
+                    _RootMotionWeights = Array.Empty<float>();
+                }
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Assert-Conditional] Asserts that the `groupIndex` is valid.</summary>
+        [System.Diagnostics.Conditional(Strings.Assertions)]
+        public void AssertGroupIndex(int groupIndex)
+        {
+            if ((uint)groupIndex >= (uint)GroupCount)
+                throw new ArgumentOutOfRangeException(
+                    nameof(groupIndex),
+                    groupIndex,
+                    $"Must be 0 <= {nameof(groupIndex)} < Group Count ({GroupCount})");
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Calculates the index of each of the <see cref="Transforms"/>.</summary>
+        public int[] CalculateIndices(WeightedMaskLayerList layers)
+        {
+            var indices = new int[_Transforms.Length];
+
+            for (int i = 0; i < _Transforms.Length; i++)
+            {
+                indices[i] = layers.IndexOf(_Transforms[i]);
+#if UNITY_ASSERTIONS
+                if (indices[i] < 0)
+                    Debug.LogWarning(
+                        $"Unable to find index of {_Transforms[i]} in {nameof(WeightedMaskLayerList)}",
+                        _Transforms[i]);
+#endif
+            }
+
+            return indices;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Adds the `transform` at the specified `index`
+        /// along with any associated <see cref="_Weights"/>.
+        /// </summary>
+        public void AddTransform(Transform transform)
+        {
+            var index = _Transforms.Length;
+
+            AnimancerUtilities.InsertAt(ref _Transforms, index, transform);
+
+            if (_Transforms.Length == 1 && _Weights.IsNullOrEmpty())
+            {
+                _Weights = new float[1];
+                return;
+            }
+
+            while (index <= _Weights.Length)
+            {
+                AnimancerUtilities.InsertAt(ref _Weights, index, 0);
+
+                index += _Transforms.Length;
+            }
+        }
+
+        /// <summary>
+        /// Removes the `index` from the <see cref="_Transforms"/>
+        /// along with any associated <see cref="_Weights"/>.
+        /// </summary>
+        public void RemoveTransform(int index)
+        {
+            AnimancerUtilities.RemoveAt(ref _Transforms, index);
+
+            while (index < _Weights.Length)
+            {
+                AnimancerUtilities.RemoveAt(ref _Weights, index);
+
+                index += _Transforms.Length;
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Calculates the index in the <see cref="Weights"/> corresponding to the specified values.</summary>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public int IndexOfGroup(int groupIndex)
+            => groupIndex * _Transforms.Length;
+
+        /// <summary>Calculates the index in the <see cref="Weights"/> corresponding to the specified values.</summary>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public int IndexOf(int groupIndex, int transformIndex)
+            => groupIndex * _Transforms.Length + transformIndex;
+
+        /************************************************************************************************************************/
+
+        /// <summary>Gets the specified weight.</summary>
+        /// <remarks>Returns <see cref="float.NaN"/> if the indices are outside the <see cref="Weights"/>.</remarks>
+        public float GetWeight(int groupIndex, int transformIndex)
+        {
+            if (Weights == null)
+                return float.NaN;
+
+            var index = IndexOf(groupIndex, transformIndex);
+            return (uint)index < (uint)Weights.Length
+                ? Weights[index]
+                : float.NaN;
+        }
+
+        /// <summary>Sets the specified weight.</summary>
+        /// <remarks>Returns false if the indices are outside the <see cref="Weights"/>.</remarks>
+        public bool SetWeight(int groupIndex, int transformIndex, float value)
+        {
+            if (Weights == null)
+                return false;
+
+            var index = IndexOf(groupIndex, transformIndex);
+            if ((uint)index < (uint)Weights.Length)
+            {
+                Weights[index] = value;
+                return true;
+            }
+
+            return false;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Gets the specified RootMotion weight.</summary>
+        /// <remarks>Returns <see cref="float.NaN"/> if the indices are outside the <see cref="RootMotionWeights"/>.</remarks>
+        public float GetRmWeight(int groupIndex)
+        {
+            if (RootMotionWeights == null)
+                return float.NaN;
+
+            return (uint)groupIndex < (uint)RootMotionWeights.Length
+                ? RootMotionWeights[groupIndex]
+                : float.NaN;
+        }
+
+        /// <summary>Sets the specified RootMotion weight.</summary>
+        /// <remarks>Returns false if the indices are outside the <see cref="RootMotionWeights"/>.</remarks>
+        public bool SetRmWeight(int groupIndex, float value)
+        {
+            if (RootMotionWeights == null)
+                return false;
+
+            if ((uint)groupIndex < (uint)RootMotionWeights.Length)
+            {
+                RootMotionWeights[groupIndex] = value;
+                return true;
+            }
+
+            return false;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public void CopyFrom(WeightedMaskLayersDefinition copyFrom, CloneContext context)
+        {
+            AnimancerUtilities.CopyExactArray(copyFrom._Transforms, ref _Transforms);
+            AnimancerUtilities.CopyExactArray(copyFrom._Weights, ref _Weights);
+            AnimancerUtilities.CopyExactArray(copyFrom._RootMotionWeights, ref _RootMotionWeights);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Does this definition contain valid data?</summary>
+        public bool IsValid
+            => !_Transforms.IsNullOrEmpty()
+            && _Weights != null && _Weights.Length >= _Transforms.Length
+            && _RootMotionWeights != null && _RootMotionWeights.Length == GroupCount;
+
+        /************************************************************************************************************************/
+
+        /// <summary>Ensures that the data in this definition is value.</summary>
+        public void Validate()
+        {
+            ValidateArraySizes();
+            RemoveMissingAndDuplicate();
+        }
+
+        /// <summary>Ensures that all the arrays have valid sizes.</summary>
+        public void ValidateArraySizes()
+        {
+            if (_Transforms.IsNullOrEmpty())
+            {
+                _Transforms = Array.Empty<Transform>();
+                _Weights = Array.Empty<float>();
+                _RootMotionWeights = Array.Empty<float>();
+            }
+
+            if (_Weights == null ||
+                _Weights.Length < _Transforms.Length)
+            {
+                AnimancerUtilities.SetLength(ref _Weights, _Transforms.Length);
+            }
+            else
+            {
+                var expectedWeightCount = (int)Math.Ceiling(_Weights.Length / (double)_Transforms.Length);
+                expectedWeightCount *= _Transforms.Length;
+                AnimancerUtilities.SetLength(ref _Weights, expectedWeightCount);
+            }
+
+            var rootMotionWeightCount = _RootMotionWeights == null
+                ? 0
+                : _RootMotionWeights.Length;
+            var groupCount = GroupCount;
+            if (rootMotionWeightCount != groupCount)
+            {
+                AnimancerUtilities.SetLength(ref _RootMotionWeights, groupCount);
+                for (int i = rootMotionWeightCount; i < groupCount; i++)
+                    _RootMotionWeights[i] = 1;
+            }
+        }
+
+        /// <summary>Removes any missing or identical <see cref="_Transforms"/>.</summary>
+        public bool RemoveMissingAndDuplicate()
+        {
+            var removedAny = false;
+
+            for (int i = 0; i < _Transforms.Length; i++)
+            {
+                var transform = _Transforms[i];
+                if (transform == null)
+                {
+                    RemoveTransform(i);
+                    removedAny = true;
+                }
+                else
+                {
+                    var nextIndex = i + 1;
+
+                    RemoveDuplicates:
+
+                    nextIndex = Array.IndexOf(_Transforms, transform, nextIndex);
+                    if (nextIndex > i)
+                    {
+                        RemoveTransform(nextIndex);
+                        removedAny = true;
+                        goto RemoveDuplicates;
+                    }
+                }
+            }
+
+            return removedAny;
+        }
+
+        /************************************************************************************************************************/
+#if UNITY_EDITOR
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        void ISerializationCallbackReceiver.OnBeforeSerialize()
+            => Validate();
+
+        /// <inheritdoc/>
+        void ISerializationCallbackReceiver.OnAfterDeserialize()
+            => Validate();
+
+        /************************************************************************************************************************/
+#endif
+        /************************************************************************************************************************/
+
+        /// <summary>Returns a summary of this definition.</summary>
+        public override string ToString()
+            => $"{nameof(WeightedMaskLayersDefinition)}(" +
+            $"{nameof(Transforms)}={(Transforms != null ? Transforms.Length : 0)}, " +
+            $"{nameof(Weights)}={(Weights != null ? Weights.Length : 0)}, " +
+            $"{nameof(RootMotionWeights)}={(RootMotionWeights != null ? RootMotionWeights.Length : 0)})";
+
+        /************************************************************************************************************************/
+        #region Equality
+        /************************************************************************************************************************/
+
+        /// <summary>Are all fields in this object equal to the equivalent in `obj`?</summary>
+        public override bool Equals(object obj)
+            => Equals(obj as WeightedMaskLayersDefinition);
+
+        /// <summary>Are all fields in this object equal to the equivalent fields in `other`?</summary>
+        public bool Equals(WeightedMaskLayersDefinition other)
+            => other != null
+            && AnimancerUtilities.ContentsAreEqual(_Transforms, other._Transforms)
+            && AnimancerUtilities.ContentsAreEqual(_Weights, other._Weights)
+            && AnimancerUtilities.ContentsAreEqual(_RootMotionWeights, other._RootMotionWeights);
+
+        /// <summary>Are all fields in `a` equal to the equivalent fields in `b`?</summary>
+        public static bool operator ==(WeightedMaskLayersDefinition a, WeightedMaskLayersDefinition b)
+            => a is null
+                ? b is null
+                : a.Equals(b);
+
+        /// <summary>Are any fields in `a` not equal to the equivalent fields in `b`?</summary>
+        public static bool operator !=(WeightedMaskLayersDefinition a, WeightedMaskLayersDefinition b)
+            => !(a == b);
+
+        /************************************************************************************************************************/
+
+        /// <summary>Returns a hash code based on the values of this object's fields.</summary>
+        public override int GetHashCode()
+            => AnimancerUtilities.Hash(-871379578,
+                _Transforms.SafeGetHashCode(),
+                _Weights.SafeGetHashCode(),
+                _RootMotionWeights.SafeGetHashCode());
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/Weighted Mask Layers/WeightedMaskLayersDefinition.cs.meta

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+guid: c9269482d6edd6349972960b7bc4b82f
+timeCreated: 1515060256
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Packages/com.kybernetik.animancer/Runtime/Core/Weighted Mask Layers/WeightedMaskMixerJob.cs

@@ -0,0 +1,199 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using Unity.Collections;
+using UnityEngine;
+using UnityEngine.Animations;
+
+#if UNITY_BURST
+using Unity.Burst;
+#endif
+
+namespace Animancer
+{
+    /// <summary>
+    /// An <see cref="IAnimationJob"/> which mixes its inputs based on individual <see cref="boneWeights"/>.
+    /// </summary>
+#if UNITY_BURST
+    [BurstCompile(FloatPrecision.Low, FloatMode.Fast
+#if UNITY_BURST_1_6_0
+        , OptimizeFor = OptimizeFor.Performance
+#endif
+        )]
+#endif
+    public struct WeightedMaskMixerJob : IAnimationJob
+    {
+        /************************************************************************************************************************/
+
+        /// <summary>The number of layers being mixed.</summary>
+        public int layerCount;
+
+        /// <summary>The root motion weight of each layer.</summary>
+        public NativeArray<float> rootMotionWeights;
+
+        /// <summary>The handles for each bone being mixed.</summary>
+        /// <remarks>
+        /// All animated bones must be included,
+        /// even if their individual weight isn't modified.
+        /// </remarks>
+        public NativeArray<TransformStreamHandle> boneTransforms;
+
+        /// <summary>The blend weight of each bone.</summary>
+        /// <remarks>
+        /// This array corresponds to the <see cref="boneTransforms"/>,
+        /// repeated for each layer after the first and excluding the base layer.
+        /// For example, if there are 3 layers and 10 bones, then this array will have 20 elements
+        /// with the first 10 being for Layer 1 and the next 10 being for Layer 2.
+        /// </remarks>
+        public NativeArray<float> boneWeights;
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        readonly void IAnimationJob.ProcessRootMotion(AnimationStream output)
+        {
+            var input = output.GetInputStream(0);
+
+            var velocity = input.velocity;
+            var angularVelocity = input.angularVelocity;
+
+            var hasRootMotionWeights = rootMotionWeights.IsCreated;
+            if (hasRootMotionWeights)
+            {
+                var baseLayerWeight = rootMotionWeights[0];
+                velocity *= baseLayerWeight;
+                angularVelocity *= baseLayerWeight;
+            }
+
+            for (int i = 1; i < layerCount; i++)// Start at 1.
+            {
+                input = output.GetInputStream(i);
+                if (!input.isValid)
+                    continue;
+
+                var layerWeight = output.GetInputWeight(i);
+                if (hasRootMotionWeights)
+                    layerWeight *= rootMotionWeights[i];
+                velocity = Vector3.LerpUnclamped(
+                    velocity,
+                    input.velocity,
+                    layerWeight);
+                angularVelocity = Vector3.LerpUnclamped(
+                    angularVelocity,
+                    input.angularVelocity,
+                    layerWeight);
+            }
+
+            output.velocity = velocity;
+            output.angularVelocity = angularVelocity;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        readonly void IAnimationJob.ProcessAnimation(AnimationStream output)
+        {
+            if (layerCount == 2)
+            {
+                ProcessAnimation2Layers(output);
+                return;
+            }
+
+            // Blending more than 2 layers is less efficient because we need to use these temporary arrays.
+
+            var transformCount = boneTransforms.Length;
+            var localPositions = new NativeArray<Vector3>(transformCount, Allocator.Temp, NativeArrayOptions.UninitializedMemory);
+            var localRotations = new NativeArray<Quaternion>(transformCount, Allocator.Temp, NativeArrayOptions.UninitializedMemory);
+
+            var input = output.GetInputStream(0);
+
+            for (var i = 0; i < transformCount; i++)
+            {
+                var transform = boneTransforms[i];
+                localPositions[i] = transform.GetLocalPosition(input);
+                localRotations[i] = transform.GetLocalRotation(input);
+            }
+
+            for (int iLayer = 1; iLayer < layerCount; iLayer++)// Start at 1.
+            {
+                input = output.GetInputStream(iLayer);
+                if (!input.isValid)
+                    break;
+
+                var layerWeight = output.GetInputWeight(iLayer);
+                if (layerWeight == 0)
+                    continue;
+
+                var weightOffset = (iLayer - 1) * transformCount;
+
+                for (var iTransform = 0; iTransform < transformCount; iTransform++)
+                {
+                    var transform = boneTransforms[iTransform];
+                    var weight = layerWeight * boneWeights[weightOffset + iTransform];
+                    if (weight == 0)
+                        continue;
+
+                    localPositions[iTransform] = Vector3.LerpUnclamped(
+                        localPositions[iTransform],
+                        transform.GetLocalPosition(input),
+                        weight);
+
+                    localRotations[iTransform] = Quaternion.SlerpUnclamped(
+                        localRotations[iTransform],
+                        transform.GetLocalRotation(input),
+                        weight);
+                }
+            }
+
+            for (var i = 0; i < transformCount; i++)
+            {
+                var transform = boneTransforms[i];
+                transform.SetLocalPosition(output, localPositions[i]);
+                transform.SetLocalRotation(output, localRotations[i]);
+            }
+
+            localPositions.Dispose();
+            localRotations.Dispose();
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Blends the layers in an optimized way when there are only 2.</summary>
+        private readonly void ProcessAnimation2Layers(AnimationStream output)
+        {
+            var input0 = output.GetInputStream(0);
+            var input1 = output.GetInputStream(1);
+
+            if (input1.isValid)
+            {
+                var layerWeight = output.GetInputWeight(1);
+                var transformCount = boneTransforms.Length;
+                for (var i = 0; i < transformCount; i++)
+                {
+                    var transform = boneTransforms[i];
+                    var weight = layerWeight * boneWeights[i];
+
+                    var position0 = transform.GetLocalPosition(input0);
+                    var position1 = transform.GetLocalPosition(input1);
+                    transform.SetLocalPosition(output, Vector3.LerpUnclamped(position0, position1, weight));
+
+                    var rotation0 = transform.GetLocalRotation(input0);
+                    var rotation1 = transform.GetLocalRotation(input1);
+                    transform.SetLocalRotation(output, Quaternion.SlerpUnclamped(rotation0, rotation1, weight));
+                }
+            }
+            else
+            {
+                var transformCount = boneTransforms.Length;
+                for (var i = 0; i < transformCount; i++)
+                {
+                    var transform = boneTransforms[i];
+                    transform.SetLocalPosition(output, transform.GetLocalPosition(input0));
+                    transform.SetLocalRotation(output, transform.GetLocalRotation(input0));
+                }
+            }
+        }
+
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Core/Weighted Mask Layers/WeightedMaskMixerJob.cs.meta

@@ -0,0 +1,13 @@
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Packages/com.kybernetik.animancer/Runtime/Data Types.meta

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Packages/com.kybernetik.animancer/Runtime/Data Types/FadeMode.cs

@@ -0,0 +1,119 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System;
+
+namespace Animancer
+{
+    /// <summary>Determines how <see cref="AnimancerLayer.Play(AnimancerState, float, FadeMode)"/> works.</summary>
+    /// 
+    /// <remarks>
+    /// <strong>Documentation:</strong>
+    /// <see href="https://kybernetik.com.au/animancer/docs/manual/blending/fading/modes">
+    /// Fade Modes</see>
+    /// <para></para>
+    /// <strong>Sample:</strong>
+    /// <see href="https://kybernetik.com.au/animancer/docs/samples/basics/transitions">
+    /// Transitions</see>
+    /// </remarks>
+    /// 
+    /// https://kybernetik.com.au/animancer/api/Animancer/FadeMode
+    /// 
+    public enum FadeMode
+    {
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Calculate the fade speed to bring the <see cref="AnimancerNode.Weight"/>
+        /// from 0 to 1 over the specified fade duration (in seconds),
+        /// regardless of the actual starting weight.
+        /// </summary>
+        ///
+        /// <remarks>
+        /// <strong>Example:</strong>
+        /// A fade duration of 0.5 would make the fade last for 0.5 seconds, regardless of how long the animation is.
+        /// <para></para>
+        /// This is generally the same as <see cref="FixedDuration"/> but differs when starting the fade from a
+        /// non-zero <see cref="AnimancerNode.Weight"/>, for example:
+        /// <list type="bullet">
+        /// <item>Fade Duration: 0.25</item>
+        /// <item>To fade from 0 to 1 with either mode would get a speed of 4 and take 0.25 seconds</item>
+        /// <item>To fade from 0.5 to 1 with <see cref="FixedDuration"/> would get a speed of 2 and take 0.25 seconds.
+        /// It has half the distance to cover so it goes half as fast to maintain the expected duration.</item>
+        /// <item>To fade from 0.5 to 1 with <see cref="FixedSpeed"/> would get a speed of 4 and take 0.125 seconds.
+        /// It gets the same speed regardless of the distance to cover, so with less distance it completes faster.</item>
+        /// </list>
+        /// </remarks>
+        ///
+        /// <exception cref="InvalidOperationException">The <see cref="AnimancerState.Clip"/> is null.</exception>
+        ///
+        /// <exception cref="ArgumentOutOfRangeException">
+        /// More states have been created for the <see cref="AnimancerState.Clip"/> than the
+        /// <see cref="AnimancerLayer.MaxCloneCount"/> allows.
+        /// </exception>
+        FixedSpeed,
+
+        /// <summary>
+        /// Calculate the fade speed to bring the <see cref="AnimancerNode.Weight"/> to the target value over the
+        /// specified fade duration (in seconds).
+        /// </summary>
+        ///
+        /// <remarks>
+        /// <strong>Example:</strong>
+        /// A fade duration of 0.5 would make the fade last for 0.5 seconds, regardless of how long the animation is.
+        /// <para></para>
+        /// This is generally the same as <see cref="FixedSpeed"/>, but differs when starting the fade from a
+        /// non-zero <see cref="AnimancerNode.Weight"/>:
+        /// <list type="bullet">
+        /// <item>Fade Duration: 0.25</item>
+        /// <item>To fade from 0 to 1 with either mode would get a speed of 4 and take 0.25 seconds</item>
+        /// <item>To fade from 0.5 to 1 with <see cref="FixedDuration"/> would get a speed of 2 and take 0.25 seconds.
+        /// It has half the distance to cover so it goes half as fast to maintain the expected duration.</item>
+        /// <item>To fade from 0.5 to 1 with <see cref="FixedSpeed"/> would get a speed of 4 and take 0.125 seconds.
+        /// It gets the same speed regardless of the distance to cover, so with less distance it completes faster.</item>
+        /// </list>
+        /// </remarks>
+        FixedDuration,
+
+        /// <summary>
+        /// If the <see cref="AnimancerNode.Weight"/> is above the <see cref="AnimancerLayer.WeightlessThreshold"/>,
+        /// this mode will use <see cref="AnimancerLayer.GetOrCreateWeightlessState"/> to get a copy of it that is at 0
+        /// weight so it can fade the copy in while the original fades out with all other states. This allows an
+        /// animation to fade into itself.
+        /// </summary>
+        ///
+        /// <remarks>
+        /// This mode can be useful when you want to repeat an action while the previous animation is still fading out.
+        /// For example, if you play an 'Attack' animation, it ends and starts fading back to 'Idle', and while it is
+        /// doing so you want to start another 'Attack' with the same animation. The previous 'Attack' can't simply
+        /// snap back to the start, so you can use this mode to create a second 'Attack' state to fade in while the old
+        /// one fades out.
+        /// <para></para>
+        /// Using this mode repeatedly on subsequent frames will probably have undesirable effects because it will
+        /// create a new state each time. In such a situation you most likely want <see cref="FixedSpeed"/> instead.
+        /// <para></para>
+        /// This mode only works for <see cref="ClipState"/>s.
+        /// <para></para>
+        /// The <see href="https://kybernetik.com.au/animancer/docs/manual/blending/fading/modes">Fade Modes</see> page
+        /// explains this mode in more detail.
+        /// </remarks>
+        FromStart,
+
+        /// <summary>
+        /// Like <see cref="FixedSpeed"/>, except that the fade duration is multiplied by the animation length.
+        /// </summary>
+        NormalizedSpeed,
+
+        /// <summary>
+        /// Like <see cref="FixedDuration"/>, except that the fade duration is multiplied by the animation length.
+        /// </summary>
+        NormalizedDuration,
+
+        /// <summary>
+        /// Like <see cref="FromStart"/>, except that the fade duration is multiplied by the animation length.
+        /// </summary>
+        NormalizedFromStart,
+
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Data Types/FadeMode.cs.meta

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Packages/com.kybernetik.animancer/Runtime/Data Types/FastEnumerator.cs

@@ -0,0 +1,265 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Runtime.CompilerServices;
+
+namespace Animancer
+{
+    /// <summary>
+    /// An <see cref="IEnumerator{T}"/> for any <see cref="IList{T}"/>
+    /// which doesn't bother checking if the target has been modified.
+    /// This gives it good performance but also makes it slightly less safe to use.
+    /// </summary>
+    /// <remarks>
+    /// This struct also implements <see cref="IEnumerable{T}"/>
+    /// so it can be used in <c>foreach</c> statements and <see cref="IList{T}"/>
+    /// to allow the target collection to be modified without breaking the enumerator
+    /// (though doing so is still somewhat dangerous so use with care).
+    /// <para></para>
+    /// <strong>Example:</strong><code>
+    /// var numbers = new int[] { 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, };
+    /// var count = 4;
+    /// foreach (var number in new FastEnumerator&lt;int&gt;(numbers, count))
+    /// {
+    ///     Debug.Log(number);
+    /// }
+    /// 
+    /// // Log Output:
+    /// // 9
+    /// // 8
+    /// // 7
+    /// // 6
+    /// </code></remarks>
+    public struct FastEnumerator<T> : IReadOnlyList<T>, IEnumerator<T>
+    {
+        /************************************************************************************************************************/
+
+        /// <summary>The target <see cref="IList{T}"/>.</summary>
+        private readonly IList<T> List;
+
+        /************************************************************************************************************************/
+
+        private int _Count;
+
+        /// <summary>[<see cref="ICollection{T}"/>]
+        /// The number of items in the <see cref="List"/> (which can be less than the
+        /// <see cref="ICollection{T}.Count"/> of the <see cref="List"/>).
+        /// </summary>
+        public int Count
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            readonly get => _Count;
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            set
+            {
+                AssertCount(value);
+                _Count = value;
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        private int _Index;
+
+        /// <summary>The position of the <see cref="Current"/> item in the <see cref="List"/>.</summary>
+        public int Index
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            readonly get => _Index;
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            set
+            {
+                AssertIndex(value);
+                _Index = value;
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>The item at the current <see cref="Index"/> in the <see cref="List"/>.</summary>
+        public readonly T Current
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            get
+            {
+                AssertCount(_Count);
+                AssertIndex(_Index);
+                return List[_Index];
+            }
+        }
+
+        /// <summary>The item at the current <see cref="Index"/> in the <see cref="List"/>.</summary>
+        readonly object IEnumerator.Current
+            => Current;
+
+        /************************************************************************************************************************/
+
+        /// <summary>Creates a new <see cref="FastEnumerator{T}"/>.</summary>
+        /// <exception cref="NullReferenceException">
+        /// The `list` is null. Use the <c>default</c> <see cref="FastEnumerator{T}"/> instead.
+        /// </exception>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public FastEnumerator(IList<T> list)
+            : this(list, list.Count)
+        { }
+
+        /// <summary>Creates a new <see cref="FastEnumerator{T}"/>.</summary>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public FastEnumerator(IList<T> list, int count)
+        {
+            List = list;
+            _Count = count;
+            _Index = -1;
+            AssertCount(count);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Moves to the next item in the <see cref="List"/> and returns true if there is one.</summary>
+        /// <remarks>At the end of the <see cref="List"/> the <see cref="Index"/> is set to <see cref="int.MinValue"/>.</remarks>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public bool MoveNext()
+        {
+            _Index++;
+            if ((uint)_Index < (uint)_Count)
+            {
+                return true;
+            }
+            else
+            {
+                _Index = int.MinValue;
+                return false;
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Moves to the previous item in the <see cref="List"/> and returns true if there is one.</summary>
+        /// <remarks>At the end of the <see cref="List"/> the <see cref="Index"/> is set to <c>-1</c>.</remarks>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public bool MovePrevious()
+        {
+            if (_Index > 0)
+            {
+                _Index--;
+                return true;
+            }
+            else
+            {
+                _Index = -1;
+                return false;
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>[<see cref="IEnumerator"/>] Reverts this enumerator to the start of the <see cref="List"/>.</summary>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void Reset()
+        {
+            _Index = -1;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        readonly void IDisposable.Dispose() { }
+
+        /************************************************************************************************************************/
+        // IEnumerator.
+        /************************************************************************************************************************/
+
+        /// <summary>Returns <c>this</c>.</summary>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public readonly FastEnumerator<T> GetEnumerator() => this;
+
+        /// <inheritdoc/>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        readonly IEnumerator<T> IEnumerable<T>.GetEnumerator() => this;
+
+        /// <inheritdoc/>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        readonly IEnumerator IEnumerable.GetEnumerator() => this;
+
+        /************************************************************************************************************************/
+        // IList.
+        /************************************************************************************************************************/
+
+        /// <summary>[<see cref="IList{T}"/>] Returns the first index of the `item` in the <see cref="List"/>.</summary>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public readonly int IndexOf(T item)
+            => List.IndexOf(item);
+
+        /// <summary>[<see cref="IList{T}"/>] The item at the specified `index` in the <see cref="List"/>.</summary>
+        public readonly T this[int index]
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            get
+            {
+                AssertIndex(index);
+                return List[index];
+            }
+        }
+
+        /************************************************************************************************************************/
+        // ICollection.
+        /************************************************************************************************************************/
+
+        /// <summary>[<see cref="ICollection{T}"/>] Does the <see cref="List"/> contain the `item`?</summary>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public readonly bool Contains(T item) => List.Contains(item);
+
+        /// <summary>[<see cref="ICollection{T}"/>] Copies the contents of the <see cref="List"/> into the `array`.</summary>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public readonly void CopyTo(T[] array, int arrayIndex)
+        {
+            for (int i = 0; i < _Count; i++)
+                array[arrayIndex + i] = List[i];
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Assert-Only] Throws an exception unless 0 &lt;= `index` &lt; <see cref="Count"/>.</summary>
+        /// <exception cref="ArgumentOutOfRangeException"/>
+        [System.Diagnostics.Conditional(Strings.Assertions)]
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        private readonly void AssertIndex(int index)
+        {
+#if UNITY_ASSERTIONS
+            if ((uint)index > (uint)_Count)
+                throw new ArgumentOutOfRangeException(nameof(index),
+                    $"{nameof(FastEnumerator<T>)}.{nameof(Index)}" +
+                    $" must be within 0 <= {nameof(Index)} ({index}) < {nameof(Count)} ({_Count}).");
+#endif
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Assert-Only] Throws an exception unless 0 &lt; `count` &lt;= <see cref="ICollection{T}.Count"/>.</summary>
+        /// <exception cref="ArgumentOutOfRangeException"/>
+        [System.Diagnostics.Conditional(Strings.Assertions)]
+        private readonly void AssertCount(int count)
+        {
+#if UNITY_ASSERTIONS
+            if (List == null)
+            {
+                if (count != 0)
+                    throw new ArgumentOutOfRangeException(nameof(count),
+                        $"Must be 0 since the {nameof(List)} is null.");
+            }
+            else
+            {
+                if ((uint)count > (uint)List.Count)
+                    throw new ArgumentOutOfRangeException(nameof(count),
+                        $"Must be within 0 <= {nameof(count)} ({count}) < {nameof(List)}.{nameof(List.Count)} ({List.Count}).");
+            }
+#endif
+        }
+
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Data Types/FastEnumerator.cs.meta

@@ -0,0 +1,11 @@
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+guid: 89db15324d7dd04468e475568b94623e
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.kybernetik.animancer/Runtime/Data Types/IndexedList.cs

@@ -0,0 +1,623 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+//#define DEBUG_INDEXED_LISTS
+
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Runtime.CompilerServices;
+
+namespace Animancer
+{
+    /// <summary>
+    /// An <see cref="IReadOnlyList{T}"/> which can remove items in <c>O(1)</c> time without searching and an inbuilt
+    /// enumerator which supports modifications at any time (including during enumeration).
+    /// </summary>
+    /// https://kybernetik.com.au/animancer/api/Animancer/IReadOnlyIndexedList_1
+    public interface IReadOnlyIndexedList<T> : IReadOnlyList<T>
+    {
+        /************************************************************************************************************************/
+
+        /// <summary>The number of items this list can contain before resizing is required.</summary>
+        public int Capacity { get; set; }// Can't reduce the Count so it's safe for a Read-Only interface.
+
+        /// <summary>Is the `item` currently in this list?</summary>
+        bool Contains(T item);
+
+        /// <summary>Is the `item` currently in this list at the specified `index`?</summary>
+        bool Contains(T item, int index);
+
+        /// <summary>Copies all the items from this list into the `array`, starting at the specified `index`.</summary>
+        void CopyTo(T[] array, int index);
+
+        /// <summary>Returns the index of the `item` in this list or <c>-1</c> if it's not in this list.</summary>
+        int IndexOf(T item);
+
+        /// <summary>Returns a string describing this list and its contents.</summary>
+        string DeepToString(string separator = "\n• ");
+
+        /************************************************************************************************************************/
+    }
+
+    /// <summary>An object which accesses the index of the items in an <see cref="IndexedList{TItem, TIndexer}"/>.</summary>
+    /// https://kybernetik.com.au/animancer/api/Animancer/IIndexer_1
+    public interface IIndexer<T>
+    {
+        /************************************************************************************************************************/
+
+        /// <summary>Returns the index of the `item`.</summary>
+        /// <remarks>
+        /// The index used by this method should be initialized at -1 and should not be modified by anything outside
+        /// this indexer.
+        /// </remarks>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        int GetIndex(T item);
+
+        /// <summary>Sets the index of the `item`.</summary>
+        /// <remarks>
+        /// The index used by this method should be initialized at -1 and should not be modified by anything outside
+        /// this indexer.
+        /// </remarks>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        void SetIndex(T item, int index);
+
+        /// <summary>Resets the index of the `item` to -1.</summary>
+        /// <remarks>
+        /// The index used by this method should be initialized at -1 and should not be modified by anything outside
+        /// this indexer.
+        /// </remarks>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        void ClearIndex(T item);
+
+        /************************************************************************************************************************/
+    }
+
+    /// <summary>
+    /// A <see cref="List{T}"/> which can remove items in <c>O(1)</c> time without searching and an inbuilt
+    /// enumerator which supports modifications at any time (including during enumeration).
+    /// </summary>
+    /// <remarks>
+    /// This implementation has several restrictions compared to a regular <see cref="List{T}"/>:
+    /// <list type="bullet">
+    /// <item>Items cannot be <c>null</c>.</item>
+    /// <item>
+    /// Items can only be in one <see cref="IndexedList{TItem, TIndexer}"/>
+    /// at a time and cannot appear multiple times in it.
+    /// </item>
+    /// </list>
+    /// </remarks>
+    /// https://kybernetik.com.au/animancer/api/Animancer/IndexedList_2
+    public class IndexedList<TItem, TIndexer> :
+        IList<TItem>,
+        IReadOnlyIndexedList<TItem>,
+        ICollection
+        where TItem : class
+        where TIndexer : IIndexer<TItem>
+    {
+        /************************************************************************************************************************/
+        #region Fields and Accessors
+        /************************************************************************************************************************/
+
+        private const string
+            SingleUse = "Each item can only be used in one " + nameof(IndexedList<TItem, TIndexer>) + " at a time.",
+            NotFound = "The specified item does not exist in this " + nameof(IndexedList<TItem, TIndexer>) + ".";
+
+        /// <summary>The index which indicates that an item isn't in a list.</summary>
+        public const int NotInList = -1;
+
+        /// <summary>The default <see cref="Capacity"/> which lists will expand to when their first item is added.</summary>
+        public static int DefaultCapacity = 16;
+
+        /************************************************************************************************************************/
+
+        /// <summary>The <see cref="IIndexer{T}"/> used to access the details of items.</summary>
+        public TIndexer Indexer;
+
+        private TItem[] _Items;
+
+        /************************************************************************************************************************/
+
+        /// <summary>Creates a new <see cref="IndexedList{TItem, TIndexer}"/> using the default <see cref="List{T}"/> constructor.</summary>
+        public IndexedList(TIndexer indexer = default)
+        {
+            Indexer = indexer;
+            _Items = Array.Empty<TItem>();
+        }
+
+        /// <summary>Creates a new <see cref="IndexedList{TItem, TIndexer}"/> with the specified initial `capacity`.</summary>
+        public IndexedList(int capacity, TIndexer indexer = default)
+        {
+            Indexer = indexer;
+            _Items = new TItem[capacity];
+        }
+
+        // No copy constructor because the indices will not work if they are used in multiple lists at once.
+
+        /************************************************************************************************************************/
+
+        /// <summary>The number of items currently in the list.</summary>
+        public int Count { get; private set; }
+
+        /// <inheritdoc/>
+        public int Capacity
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            get => _Items.Length;
+            set
+            {
+                if (value < Count)
+                    throw new ArgumentOutOfRangeException(nameof(Count),
+                        $"{nameof(Capacity)} can't be less than {nameof(Count)}." +
+                        $" Excess items must be removed before the {nameof(Capacity)} can be reduced.");
+
+                Array.Resize(ref _Items, value);
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>The item at the specified `index`.</summary>
+        /// <remarks>This indexer has <c>O(1)</c> complexity</remarks>
+        /// <exception cref="ArgumentException">The `value` was already in an <see cref="IndexedList{TItem, TIndexer}"/> (setter only).</exception>
+        public TItem this[int index]
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            get => _Items[index];
+            set
+            {
+                // Make sure it isn't already in a list.
+                if (Indexer.GetIndex(value) != NotInList)
+                    throw new ArgumentException(SingleUse);
+
+                // Remove the old item at that index.
+                Indexer.ClearIndex(_Items[index]);
+
+                // Set the index of the new item and add it at that index.
+                Indexer.SetIndex(value, index);
+                _Items[index] = value;
+                AssertContents();
+            }
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Is the `item` currently in this list?</summary>
+        /// <remarks>This method has <c>O(1)</c> complexity.</remarks>
+        public bool Contains(TItem item)
+            => item != null
+            && Contains(item, Indexer.GetIndex(item));
+
+        /// <summary>Is the `item` currently in this list at the specified `index`?</summary>
+        /// <remarks>This method has <c>O(1)</c> complexity.</remarks>
+        public bool Contains(TItem item, int index)
+            => (uint)index < (uint)Count
+            && _Items[index] == item;
+
+        /************************************************************************************************************************/
+
+        /// <summary>Returns the index of the `item` in this list or <c>-1</c> if it's not in this list.</summary>
+        /// <remarks>This method has <c>O(1)</c> complexity.</remarks>
+        public int IndexOf(TItem item)
+        {
+            if (item == null)
+                return NotInList;
+
+            var index = Indexer.GetIndex(item);
+            if (Contains(item, index))
+                return index;
+            else
+                return NotInList;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void CopyTo(TItem[] array, int index)
+            => _Items.CopyTo(array, index);
+
+        /// <summary>Copies all the items from this list into the `array`, starting at the specified `index`.</summary>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        void ICollection.CopyTo(Array array, int index)
+            => _Items.CopyTo(array, index);
+
+        /************************************************************************************************************************/
+
+        /// <summary>Returns false.</summary>
+        bool ICollection<TItem>.IsReadOnly
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            get => false;
+        }
+
+        /// <summary>Is this list thread safe?</summary>
+        bool ICollection.IsSynchronized
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            get => _Items.IsSynchronized;
+        }
+
+        /// <summary>An object that can be used to synchronize access to this <see cref="ICollection"/>.</summary>
+        object ICollection.SyncRoot
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            get => _Items.SyncRoot;
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Add
+        /************************************************************************************************************************/
+
+        /// <summary>Adds the `item` to the end of this list.</summary>
+        /// <remarks>
+        /// This method has <c>O(1)</c> complexity if the <see cref="Capacity"/> doesn't need to be increased.
+        /// Otherwise, it's <c>O(N)</c> since all existing items need to be copied into a new array.
+        /// </remarks>
+        /// <exception cref="ArgumentException">
+        /// The `item` was already in an <see cref="IndexedList{TItem, TIndexer}"/>.
+        /// </exception>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        void ICollection<TItem>.Add(TItem item)
+            => Add(item);
+
+        /// <summary>Adds the `item` to the end of this list if it wasn't already in it and returns true if successful.</summary>
+        /// <remarks>
+        /// This method has <c>O(1)</c> complexity if the <see cref="Capacity"/> doesn't need to be increased.
+        /// Otherwise, it's <c>O(N)</c> since all existing items need to be copied into a new array.
+        /// </remarks>
+        /// <exception cref="ArgumentException">
+        /// The `item` is already in a different list.
+        /// </exception>
+        /// <exception cref="IndexOutOfRangeException">
+        /// The `item` is already in a different list at an index larger than this list.
+        /// </exception>
+        public bool Add(TItem item)
+        {
+            var index = Indexer.GetIndex(item);
+
+            // Make sure it isn't already in a list.
+            if (index != NotInList)
+            {
+                if (_Items[index] == item)// If it's in this list, do nothing.
+                    return false;
+                else// Otherwise, it's in another list so we can't add it to this one.
+                    throw new ArgumentException(SingleUse);
+            }
+
+            // Set the index of the new item and add it to the list.
+            Indexer.SetIndex(item, Count);
+            InternalAdd(item);
+            AssertContents();
+            return true;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Adds the `item` to this list at the specified `index`.</summary>
+        /// <remarks>
+        /// This method has <c>O(1)</c> complexity.
+        /// <para></para>
+        /// This does not maintain the order of items, but is more efficient than <see cref="List{T}.Insert(int, T)"/>
+        /// because it avoids the need to move every item after the target up one place.
+        /// </remarks>
+        public void Insert(int index, TItem item)
+        {
+            if (index >= Count)
+            {
+                Add(item);
+                return;
+            }
+
+            var oldItem = _Items[index];
+
+            Indexer.SetIndex(item, index);
+            Indexer.SetIndex(oldItem, Count);
+
+            _Items[index] = item;
+            InternalAdd(oldItem);
+
+            AssertContents();
+        }
+
+        /************************************************************************************************************************/
+
+        private void InternalAdd(TItem item)
+        {
+            var count = Count;
+            var capacity = Capacity;
+
+            if (count == capacity)
+            {
+                if (capacity == 0)
+                {
+                    _Items = new TItem[DefaultCapacity];
+                }
+                else
+                {
+                    capacity *= 2;
+                    if (capacity < DefaultCapacity)
+                        capacity = DefaultCapacity;
+
+                    var events = new TItem[capacity];
+
+                    Array.Copy(_Items, 0, events, 0, count);
+
+                    _Items = events;
+                }
+            }
+
+            _Items[count] = item;
+
+            Count = count + 1;
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Remove
+        /************************************************************************************************************************/
+
+        /// <summary>Removes the item at the specified `index` by swapping the last item in this list into its place.</summary>
+        /// <remarks>
+        /// This method has <c>O(1)</c> complexity.
+        /// <para></para>
+        /// This does not maintain the order of items, but is more efficient than <see cref="List{T}.RemoveAt"/>
+        /// because it avoids the need to move every item after the target down one place.
+        /// </remarks>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void RemoveAt(int index)
+            => RemoveAt(index, _Items[index]);
+
+        /// <summary>Removes the item at the specified `index` by swapping the last item in this list into its place.</summary>
+        /// <remarks>
+        /// This method has <c>O(1)</c> complexity.
+        /// <para></para>
+        /// This does not maintain the order of items, but is more efficient than <see cref="List{T}.RemoveAt"/>
+        /// because it avoids the need to move every item after the target down one place.
+        /// </remarks>
+        private void RemoveAt(int index, TItem item)
+        {
+            var lastIndex = Count - 1;
+
+            // Adjust the enumerator if necessary.
+            if (CurrentIndex > index)
+            {
+                CurrentIndex--;
+
+                // If the removal index is ahead of the current enumeration,
+                // swap the current item to that index and swap the last item to the current index.
+
+                // Otherwise simply swapping the last item into that slot would mean that it gets covered again
+                // when the enumerator reaches it.
+
+                if (CurrentIndex > index)
+                {
+                    var lastItem = _Items[lastIndex];
+                    var currentItem = _Items[CurrentIndex];
+
+                    _Items[CurrentIndex] = lastItem;
+                    _Items[index] = currentItem;
+                    _Items[lastIndex] = null;
+
+                    Count--;
+
+                    Indexer.ClearIndex(item);
+                    Indexer.SetIndex(currentItem, index);
+                    Indexer.SetIndex(lastItem, CurrentIndex);
+
+                    AssertContents();
+
+                    return;
+                }
+            }
+
+            // If it wasn't the last item, move the last item over it.
+            if (lastIndex > index)
+            {
+                var lastItem = _Items[lastIndex];
+                _Items[index] = lastItem;
+                _Items[lastIndex] = null;
+
+                Count--;
+
+                Indexer.ClearIndex(item);
+                Indexer.SetIndex(lastItem, index);
+            }
+            else// If it was the last item, just remove it.
+            {
+                _Items[lastIndex] = null;
+
+                Count--;
+
+                Indexer.ClearIndex(item);
+            }
+
+            AssertContents();
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Removes the `item` by swapping the last item in this list into its place.</summary>
+        /// <remarks>
+        /// This method has <c>O(1)</c> complexity.
+        /// <para></para>
+        /// This method does not maintain the order of items, but is more efficient than <see cref="Remove"/> because
+        /// it avoids the need to move every item after the target down one place.
+        /// </remarks>
+        public bool Remove(TItem item)
+        {
+            var index = Indexer.GetIndex(item);
+
+            // If it isn't in this list, do nothing.
+            if (!Contains(item, index))
+                return false;
+
+            // Remove the item.
+            RemoveAt(index, item);
+            return true;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>Removes all items from this list.</summary>
+        /// <remarks>This method has <c>O(N)</c> complexity.</remarks>
+        public void Clear()
+        {
+            for (int i = Count - 1; i >= 0; i--)
+                Indexer.ClearIndex(_Items[i]);
+
+            Array.Clear(_Items, 0, Count);
+            Count = 0;
+
+            CurrentIndex = NotInList;
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Enumeration
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// If something is currently enumerating through this list, this value holds the index it's currently up
+        /// to. Otherwise, this value will be negative.
+        /// </summary>
+        public int CurrentIndex { get; private set; } = NotInList;
+
+        /************************************************************************************************************************/
+
+        /// <summary>The item at the <see cref="CurrentIndex"/>.</summary>
+        /// <exception cref="IndexOutOfRangeException">
+        /// The <see cref="CurrentIndex"/> is negative so this list isn't currently being enumerated.
+        /// </exception>
+        public TItem Current
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            get => _Items[CurrentIndex];
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Has <see cref="BeginEnumeraton"/> been called and <see cref="TryEnumerateNext"/> not yet been called
+        /// enough times to go through all items?
+        /// </summary>
+        public bool IsEnumerating
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            get => CurrentIndex != NotInList;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Sets the <see cref="CurrentIndex"/> to the end of this list so that <see cref="TryEnumerateNext"/> can
+        /// iterate backwards to the start.
+        /// </summary>
+        /// <exception cref="InvalidOperationException">
+        /// This method was called multiple times without <see cref="TryEnumerateNext"/> going over all items. This
+        /// list can only be enumerated by one thing at a time and it must fully complete before the next can begin.
+        /// This limitation is necessary to allow items to be safely added and removed at any time.
+        /// </exception>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void BeginEnumeraton()
+        {
+            if (IsEnumerating)
+                throw new InvalidOperationException(
+                    $"{GetType().Name}<{typeof(TItem).Name}> was already enumerating." +
+                    $" Recursive enumeration is not supported.");
+
+            CurrentIndex = Count;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Moves the <see cref="CurrentIndex"/> so the <see cref="Current"/> property points to the next item in
+        /// this list.
+        /// </summary>
+        /// <remarks>
+        /// This method should only be called after <see cref="BeginEnumeraton"/> and it should be called
+        /// repeatedly until it returns false. <see cref="CancelEnumeration"/> can be used to cancel the
+        /// enumeration early.
+        /// </remarks>
+        /// <returns>False if there are no more items to move to. Otherwise true.</returns>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public bool TryEnumerateNext()
+            => --CurrentIndex >= 0;
+
+        /************************************************************************************************************************/
+
+        /// <summary>
+        /// Clears the <see cref="CurrentIndex"/> so that <see cref="BeginEnumeraton"/> can be used again without
+        /// needing to call <see cref="TryEnumerateNext"/> repeatedly until it returns false.
+        /// </summary>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void CancelEnumeration()
+            => CurrentIndex = NotInList;
+
+        /************************************************************************************************************************/
+
+        /// <summary>Returns an enumerator which iterates through this list.</summary>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public FastEnumerator<TItem> GetEnumerator()
+            => new(_Items, Count);
+
+        /// <inheritdoc/>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        IEnumerator<TItem> IEnumerable<TItem>.GetEnumerator()
+            => GetEnumerator();
+
+        /// <inheritdoc/>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        IEnumerator IEnumerable.GetEnumerator()
+            => GetEnumerator();
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+        #region Debugging
+        /************************************************************************************************************************/
+
+        /// <summary>Asserts that the indices stored in all items actually match their index in this list.</summary>
+        [System.Diagnostics.Conditional("DEBUG_INDEXED_LISTS")]
+        private void AssertContents(string name = null)
+        {
+            for (int i = 0; i < Count; i++)
+                if (i != Indexer.GetIndex(_Items[i]))
+                    throw new ArgumentException($"Index mismatch at {i} in {name} {DeepToString()}");
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public string DeepToString(string separator = "\n• ")
+        {
+            var text = StringBuilderPool.Instance.Acquire();
+
+            text.Append(GetType().GetNameCS())
+                .Append('[')
+                .Append(Count)
+                .Append(']');
+
+            for (int i = 0; i < Count; i++)
+            {
+                var item = _Items[i];
+                text.Append(separator)
+                    .Append('[')
+                    .Append(Indexer.GetIndex(item))
+                    .Append("] ")
+                    .Append(item);
+            }
+
+            return text.ReleaseToString();
+        }
+
+        /************************************************************************************************************************/
+        #endregion
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Data Types/IndexedList.cs.meta

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Packages/com.kybernetik.animancer/Runtime/Data Types/Object Pooling.meta

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Packages/com.kybernetik.animancer/Runtime/Data Types/Object Pooling/CollectionPool.cs

@@ -0,0 +1,48 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System.Collections.Generic;
+
+namespace Animancer
+{
+    /// <summary>An <see cref="ObjectPool{T}"/> for <see cref="ICollection{T}"/>.</summary>
+    /// https://kybernetik.com.au/animancer/api/Animancer/CollectionPool_2
+    public abstract class CollectionPool<TItem, TCollection> : ObjectPool<TCollection>
+        where TCollection : class, ICollection<TItem>// The non-generic ICollection doesn't have Count.
+    {
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override TCollection Acquire()
+        {
+            var collection = base.Acquire();
+            AssertEmpty(collection);
+            return collection;
+        }
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        public override void Release(TCollection collection)
+        {
+            collection.Clear();
+            base.Release(collection);
+        }
+
+        /************************************************************************************************************************/
+
+        /// <summary>[Assert-Conditional] Asserts that the `collection` is empty.</summary>
+        [System.Diagnostics.Conditional(Strings.Assertions)]
+        public static void AssertEmpty(TCollection collection)
+        {
+#if UNITY_ASSERTIONS
+            if (collection.Count != 0)
+                throw new UnityEngine.Assertions.AssertionException(
+                    $"A pooled {collection.GetType().GetNameCS()} is not empty.{NotResetError}",
+                    null);
+#endif
+        }
+
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Data Types/Object Pooling/CollectionPool.cs.meta

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Packages/com.kybernetik.animancer/Runtime/Data Types/Object Pooling/DictionaryPool.cs

@@ -0,0 +1,59 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System.Collections.Generic;
+
+namespace Animancer
+{
+    /// <summary>Convenience methods for accessing <see cref="DictionaryPool{TKey,TValue}"/>.</summary>
+    /// https://kybernetik.com.au/animancer/api/Animancer/DictionaryPool
+    public static class DictionaryPool
+    {
+        /************************************************************************************************************************/
+
+        /// <summary>Returns a spare <see cref="Dictionary{TKey,TValue}"/> if there are any, or creates a new one.</summary>
+        /// <remarks>Remember to <see cref="Release{TKey,TValue}(Dictionary{TKey,TValue})"/> it when you are done.</remarks>
+        public static Dictionary<TKey, TValue> Acquire<TKey, TValue>()
+            => DictionaryPool<TKey, TValue>.Instance.Acquire();
+
+        /// <summary>Returns a spare <see cref="Dictionary{TKey,TValue}"/> if there are any, or creates a new one.</summary>
+        /// <remarks>Remember to <see cref="Release{TKey,TValue}(Dictionary{TKey,TValue})"/> it when you are done.</remarks>
+        public static void Acquire<TKey, TValue>(out Dictionary<TKey, TValue> dictionary)
+            => dictionary = Acquire<TKey, TValue>();
+
+        /************************************************************************************************************************/
+
+        /// <summary>Clears the `dictionary` and adds it to the list of spares so it can be reused.</summary>
+        public static void Release<TKey, TValue>(this Dictionary<TKey, TValue> dictionary)
+            => DictionaryPool<TKey, TValue>.Instance.Release(dictionary);
+
+        /// <summary>Clears the `dictionary`, adds it to the list of spares so it can be reused, and sets it to <c>null</c>.</summary>
+        public static void Release<TKey, TValue>(ref Dictionary<TKey, TValue> dictionary)
+        {
+            Release(dictionary);
+            dictionary = null;
+        }
+
+        /************************************************************************************************************************/
+    }
+
+    /************************************************************************************************************************/
+
+    /// <summary>An <see cref="ObjectPool{T}"/> for <see cref="Dictionary{TKey,TValue}"/>.</summary>
+    /// https://kybernetik.com.au/animancer/api/Animancer/DictionaryPool_2
+    public class DictionaryPool<TKey, TValue> : CollectionPool<KeyValuePair<TKey, TValue>, Dictionary<TKey, TValue>>
+    {
+        /************************************************************************************************************************/
+
+        /// <summary>Singleton.</summary>
+        public static DictionaryPool<TKey, TValue> Instance = new();
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        protected override Dictionary<TKey, TValue> New()
+            => new();
+
+        /************************************************************************************************************************/
+    }
+}
+

Packages/com.kybernetik.animancer/Runtime/Data Types/Object Pooling/DictionaryPool.cs.meta

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Packages/com.kybernetik.animancer/Runtime/Data Types/Object Pooling/ListPool.cs

@@ -0,0 +1,59 @@
+// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2026 Kybernetik //
+
+using System.Collections.Generic;
+
+namespace Animancer
+{
+    /// <summary>Convenience methods for accessing <see cref="ListPool{T}"/>.</summary>
+    /// https://kybernetik.com.au/animancer/api/Animancer/ListPool
+    public static class ListPool
+    {
+        /************************************************************************************************************************/
+
+        /// <summary>Returns a spare <see cref="List{T}"/> if there are any, or creates a new one.</summary>
+        /// <remarks>Remember to <see cref="Release{T}(List{T})"/> it when you are done.</remarks>
+        public static List<T> Acquire<T>()
+            => ListPool<T>.Instance.Acquire();
+
+        /// <summary>Returns a spare <see cref="List{T}"/> if there are any, or creates a new one.</summary>
+        /// <remarks>Remember to <see cref="Release{T}(List{T})"/> it when you are done.</remarks>
+        public static void Acquire<T>(out List<T> list)
+            => list = Acquire<T>();
+
+        /************************************************************************************************************************/
+
+        /// <summary>Clears the `list` and adds it to the list of spares so it can be reused.</summary>
+        public static void Release<T>(this List<T> list)
+            => ListPool<T>.Instance.Release(list);
+
+        /// <summary>Clears the `list`, adds it to the list of spares so it can be reused, and sets it to <c>null</c>.</summary>
+        public static void Release<T>(ref List<T> list)
+        {
+            Release(list);
+            list = null;
+        }
+
+        /************************************************************************************************************************/
+    }
+
+    /************************************************************************************************************************/
+
+    /// <summary>An <see cref="ObjectPool{T}"/> for <see cref="List{T}"/>.</summary>
+    /// https://kybernetik.com.au/animancer/api/Animancer/ListPool_1
+    public class ListPool<T> : CollectionPool<T, List<T>>
+    {
+        /************************************************************************************************************************/
+
+        /// <summary>Singleton.</summary>
+        public static ListPool<T> Instance = new();
+
+        /************************************************************************************************************************/
+
+        /// <inheritdoc/>
+        protected override List<T> New()
+            => new();
+
+        /************************************************************************************************************************/
+    }
+}
+