using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Unity.Cinemachine;
using BaseGames.Core;
using BaseGames.Core.Events;

namespace BaseGames.Camera
{
    /// <summary>
    /// 相机状态单例控制器。须放置在 Persistent 场景中。
    ///
    /// 支持两种相机切换模式：
    ///   1. 全局双 VCam 模式（推荐）：<see cref="SwitchArea"/>
    ///      两台全局 CinemachineCamera（<c>_vcamA</c> / <c>_vcamB</c>）交替承接各区域，
    ///      通过优先级 ping-pong 触发 Cinemachine 混合过渡。场景内无需每个区域都放置 VCam。
    ///
    ///   2. 专有 VCam 模式：<see cref="SwitchArea"/>（区域含 dedicatedCamera 时自动使用）
    ///      激活该区域专属的 CinemachineCamera（优先级 > 全局 VCam），
    ///      适用于需要独特相机参数的特殊区域。
    /// </summary>
    [DefaultExecutionOrder(-100)]
    public class CameraStateController : MonoBehaviour, ICameraService
    {
        [Header("引用")]
        [SerializeField] private CinemachineBrain         _brain;
        [SerializeField] private CinemachineImpulseSource _impulseSource;
        [SerializeField] private CameraLookSystem         _lookSystem;

        [Header("全局双 VCam（Persistent 场景中放置两台通用虚拟相机）")]
        [Tooltip("两台 VCam 交替承接各相机区域，通过优先级 ping-pong 触发混合过渡。\n" +
                 "须各自挂载 CinemachineCamera + CinemachineConfiner2D；\n" +
                 "Follow 指向 Player/CameraFollowTarget（或运行时调用 SetFollowTarget 赋值）。")]
        [SerializeField] private CinemachineCamera _vcamA;
        [SerializeField] private CinemachineCamera _vcamB;

        [Tooltip("全局 VCam 激活时的优先级。专有 VCam 的 _dedicatedPriority 须高于此值。")]
        [SerializeField] private int _globalActivePriority = 10;

        [Tooltip("待机 VCam 的优先级。\n" +
                 "Cinemachine 3.x 中 Priority = 0 的 VCam 不会被 Brain 选中，导致主相机停止跟随。\n" +
                 "必须 > 0 且 < _globalActivePriority，确保 Brain 始终有可用 VCam，\n" +
                 "同时切换时两台 VCam 均在 Brain 视野内以完成正确的混合过渡。")]
        [SerializeField] private int _standbyPriority = 1;

        [Header("默认混合配置")]
        [SerializeField] private CameraBlendProfileSO _defaultBlendProfile;

        [Header("镜头配置")]
        [Tooltip("全局镜头参数 SO。Awake 时将 fieldOfView 应用到 _vcamA / _vcamB。\n" +
                 "与各 CameraArea 引用同一资产，确保 FOV 参数一致。")]
        [SerializeField] private CameraLensConfigSO _lensConfig;

        [Header("玩家跟随")]
        [Tooltip("PlayerController 生成时广播的事件频道（EVT_PlayerSpawned）。\n" +
                 "收到后自动查找 CameraFollowTarget 子节点并赋值给两台全局 VCam 的 Follow。")]
        [SerializeField] private TransformEventChannelSO _onPlayerSpawned;

        // ── 状态 ──────────────────────────────────────────────────────────────
        private int                   _activeSlot         = -1; // -1 = 未初始化；0 = A；1 = B
        private CameraArea            _roomBaselineArea;                                           // SwitchArea(priority=0) 写入的房间基线，不被触发事件删除
        private readonly List<(CameraArea area, int priority)> _activeZones = new();               // 玩家当前所在的触发区域集合（priority>0）
        private CameraArea            _currentArea;
        private CinemachineCamera     _activeDedicatedCam;
        private CinemachineConfiner2D _confinerA;
        private CinemachineConfiner2D _confinerB;
        private Transform             _currentFollowTarget;       // 最后一次 SetFollowTarget 设置的目标，激活 VCam 时自动同步
        private readonly CompositeDisposable _subs = new();

        // ── Lifecycle ────────────────────────────────────────────────────────

        private void Awake()
        {
            if (ServiceLocator.GetOrDefault<ICameraService>() != null) { Destroy(gameObject); return; }
            ServiceLocator.Register<ICameraService>(this);

            // 缓存 Confiner 引用
            if (_vcamA != null) _confinerA = _vcamA.GetComponent<CinemachineConfiner2D>();
            if (_vcamB != null) _confinerB = _vcamB.GetComponent<CinemachineConfiner2D>();

            // 初始两台 VCam 均处于待机优先级（> 0）
            // Cinemachine 3.x 中 Priority = 0 的 VCam 不被 Brain 选中，主相机会停止运动
            if (_vcamA != null) _vcamA.Priority = _standbyPriority;
            if (_vcamB != null) _vcamB.Priority = _standbyPriority;

            // 将 SO 中的 FOV 应用到两台全局 VCam
            ApplyLensConfig();

            // 订阅 PlayerSpawned 事件，运行时自动为 VCam 赋值 Follow
            _onPlayerSpawned?.Subscribe(OnPlayerSpawned).AddTo(_subs);
        }

        private void OnDestroy()
        {
            _subs.Dispose();
            ServiceLocator.Unregister<ICameraService>(this);
        }

        private void OnPlayerSpawned(Transform playerRoot)
        {
            const string followNodeName = "CameraFollowTarget";
            Transform follow = playerRoot.Find(followNodeName) ?? playerRoot;
            SetFollowTarget(follow);
        }

        private void ApplyLensConfig()
        {
            if (_lensConfig == null) return;
            float fov   = _lensConfig.fieldOfView;
            float depth = _lensConfig.cameraDepth;
            ApplyLensToVcam(_vcamA, fov, depth);
            ApplyLensToVcam(_vcamB, fov, depth);
        }

        private static void ApplyLensToVcam(CinemachineCamera vcam, float fov, float depth)
        {
            if (vcam == null) return;
            var lens = vcam.Lens;
            lens.FieldOfView = fov;
            vcam.Lens = lens;
            // CinemachinePositionComposer.CameraDistance 是运行时真正控制 Z 距离的属性，
            // 必须同步，否则 Transform Z 被 Cinemachine Pipeline 覆盖
            var composer = vcam.GetComponent<CinemachinePositionComposer>();
            if (composer != null)
                composer.CameraDistance = depth;
            // 同步 Transform Z，保证编辑器预览与运行时一致
            var pos = vcam.transform.position;
            pos.z = -depth;
            vcam.transform.position = pos;
        }

#if UNITY_EDITOR
        private void OnValidate() => ApplyLensConfig();
#endif

        // ── 公开 API ──────────────────────────────────────────────────────────

        /// <summary>
        /// 切换到目标相机区域。<paramref name="priority"/> &lt; 当前激活优先级时忽略。
        /// <para>priority = 0：始终执行（适合 RoomController 入场初始化）。</para>
        /// </summary>
        public void SwitchArea(CameraArea area, int priority = 0, bool instantCut = false)
        {
            if (area == null) return;

            if (priority == 0)
            {
                // 房间初始化 / 无条件切换：记录基线并清空触发集合
                _roomBaselineArea = area;
                _activeZones.Clear();
                ActivateArea(area, instantCut);
                return;
            }

            // 触发区域进入：更新集合（同一区域去重后重新加入，保证最新优先级）
            _activeZones.RemoveAll(e => e.area == area);
            _activeZones.Add((area, priority));

            // 仅当此区域是当前最优且尚未激活时才切换，避免不必要的 ping-pong
            CameraArea best = GetEffectiveArea();
            if (best == area && area != _currentArea)
                ActivateArea(area, instantCut);
        }

        /// <summary>
        /// 释放 <paramref name="releasedArea"/> 的权限。
        /// 从优先级栈中移除该区域；若它是当前激活区域，则激活新栈顶（或 fallback）。
        /// </summary>
        public void ReleaseArea(CameraArea releasedArea, CameraArea fallback)
        {
            if (releasedArea == null) return;

            bool wasActive = releasedArea == _currentArea;
            int  removed   = _activeZones.RemoveAll(e => e.area == releasedArea);
            if (removed == 0) return;

            if (!wasActive) return;

            // 回退到当前最优区域（触发集合 → 房间基线 → fallback）
            CameraArea next = GetEffectiveArea() ?? fallback;
            if (next != null && next != _currentArea)
                ActivateArea(next, instantCut: false);
        }

        /// <summary>
        /// 返回当前应激活的区域：<see cref="_activeZones"/> 中优先级最高的
        /// （同优先级取最近进入的），若触发集合为空则回退到 <see cref="_roomBaselineArea"/>。
        /// </summary>
        private CameraArea GetEffectiveArea()
        {
            CameraArea best = null;
            int bestPriority = -1;
            foreach (var (a, p) in _activeZones)
                if (p >= bestPriority) { bestPriority = p; best = a; }
            return best ?? _roomBaselineArea;
        }

        private void ActivateArea(CameraArea area, bool instantCut = false)
        {
            _currentArea = area;

            if (instantCut)
            {
                // 房间入口硬切：相机立即跳到新房间位置，无混合动画
                if (_brain != null)
                    _brain.DefaultBlend = new CinemachineBlendDefinition
                    {
                        Style = CinemachineBlendDefinition.Styles.Cut,
                        Time  = 0f,
                    };
                // 重置窥视偏移，避免旧房间的窥视状态残留
                _lookSystem?.ResetOffsets(snap: true);                // 重置所有 VCam 扩展的内部状态，防止旧房间的速度/阻尼估算带入新房间
                ResetVCamExtensions(_vcamA);
                ResetVCamExtensions(_vcamB);
                if (area.HasDedicated) ResetVCamExtensions(area.DedicatedCamera);            }
            else
            {
                ApplyBlendProfile(area.BlendProfile ?? _defaultBlendProfile);
            }

            if (area.LensSize > 0f)
                SetLensSize(area.LensSize, area.LensSizeDuration);

            if (area.HasDedicated)
                ActivateDedicated(area);
            else
                ActivateGlobalSlot(area);
        }

        /// <summary>
        /// 运行时为全局双 VCam 设置跟随目标。
        /// 若存在 <see cref="CameraLookSystem"/>，VCam 跟随系统输出的虚拟目标（含窥视偏移）。
        /// </summary>
        public void SetFollowTarget(Transform followTarget)
        {
            Transform actual = followTarget;
            if (_lookSystem != null)
            {
                _lookSystem.SetBaseTarget(followTarget);
                actual = _lookSystem.VirtualTarget;
            }
            _currentFollowTarget = actual; // 缓存供后续激活 VCam 时同步
            if (_vcamA != null) _vcamA.Follow = actual;
            if (_vcamB != null) _vcamB.Follow = actual;
        }

        /// <summary>触发屏幕抖动。</summary>
        public void TriggerImpulse(Vector3 velocity)
        {
            if (_impulseSource != null) _impulseSource.GenerateImpulse(velocity);
        }

        /// <summary>以默认强度触发屏幕抖动。</summary>
        public void TriggerImpulse(float strength = 0.3f)
            => TriggerImpulse(Vector3.down * strength);

        /// <summary>
        /// 平滑过渡正交相机尺寸。<paramref name="duration"/> = 0 时瞬间切换。
        /// 区域进入时由 <see cref="CameraArea"/> 自动调用；游戏代码也可直接调用。
        /// </summary>
        public void SetLensSize(float orthographicSize, float duration = 0f)
        {
            if (_lensCoroutine != null) StopCoroutine(_lensCoroutine);
            if (duration <= 0f) { ApplyLensSizeToAll(orthographicSize); return; }
            _lensCoroutine = StartCoroutine(LensSizeCo(orthographicSize, duration));
        }

        private Coroutine _lensCoroutine;

        private void ApplyLensSizeToAll(float size)
        {
            SetVcamLens(_vcamA, size);
            SetVcamLens(_vcamB, size);
            if (_activeDedicatedCam != null) SetVcamLens(_activeDedicatedCam, size);
        }

        private static void SetVcamLens(CinemachineCamera vcam, float size)
        {
            if (vcam == null) return;
            var lens = vcam.Lens;
            lens.OrthographicSize = size;
            vcam.Lens = lens;
        }

        private IEnumerator LensSizeCo(float target, float duration)
        {
            CinemachineCamera active = GetActiveVcam();
            if (active == null) { _lensCoroutine = null; yield break; }
            float start   = active.Lens.OrthographicSize;
            float elapsed = 0f;
            while (elapsed < duration)
            {
                elapsed += Time.deltaTime;
                ApplyLensSizeToAll(Mathf.Lerp(start, target, elapsed / duration));
                yield return null;
            }
            ApplyLensSizeToAll(target);
            _lensCoroutine = null;
        }

        private CinemachineCamera GetActiveVcam()
        {
            if (_activeDedicatedCam != null) return _activeDedicatedCam;
            return _activeSlot == 0 ? _vcamA : (_vcamB != null ? _vcamB : _vcamA);
        }

        // ── 内部方法 ──────────────────────────────────────────────────────────

        /// <summary>激活区域的专有 VCam（高优先级）。</summary>
        private void ActivateDedicated(CameraArea area)
        {
            // 降低前一个专有 VCam（若与新的不同）
            if (_activeDedicatedCam != null && _activeDedicatedCam != area.DedicatedCamera)
                _activeDedicatedCam.Priority = 0;

            _activeDedicatedCam          = area.DedicatedCamera;
            _activeDedicatedCam.Priority = area.DedicatedPriority;
        }

        /// <summary>
        /// 使用全局 VCam ping-pong 切换到新区域。
        /// 配置非活跃 VCam 的 Confiner → 提升其优先级 → 降低旧 VCam 优先级。
        /// Cinemachine Brain 检测到优先级变化后自动触发混合。
        /// </summary>
        private void ActivateGlobalSlot(CameraArea area)
        {
            // 收回专有 VCam
            if (_activeDedicatedCam != null)
            {
                _activeDedicatedCam.Priority = 0;
                _activeDedicatedCam = null;
            }

            bool noVCams = _vcamA == null && _vcamB == null;
            if (noVCams)
            {
                Debug.LogWarning("[CameraStateController] 全局 VCam A / B 均未绑定，无法切换相机区域。");
                return;
            }

            // 首次调用：直接激活 VCamA（场景淡入阶段，无需混合动画）
            if (_activeSlot < 0)
            {
                var cam      = _vcamA ?? _vcamB;
                var confiner = _vcamA != null ? _confinerA : _confinerB;
                ConfigureSlot(cam, confiner, area);
                SyncFollowToVCam(cam);
                cam.Priority = _globalActivePriority;
                _activeSlot  = _vcamA != null ? 0 : 1;
                return;
            }

            // 只有一台 VCam 时：直接重新配置，不做优先级 ping-pong
            // （之前的 null 保护令 inactiveCam == activeCam，导致先升后降为 0 自毁）
            if (_vcamA == null || _vcamB == null)
            {
                var cam      = _vcamA ?? _vcamB;
                var confiner = _vcamA != null ? _confinerA : _confinerB;
                ConfigureSlot(cam, confiner, area);
                SyncFollowToVCam(cam);
                cam.Priority = _globalActivePriority; // 保持激活，不改变 _activeSlot
                return;
            }

            // 双 VCam ping-pong：配置非活跃槽 → 升级其优先级 → 降低活跃槽优先级
            bool nextIsA          = _activeSlot != 0;
            var  inactiveCam      = nextIsA ? _vcamA : _vcamB;
            var  activeCam        = nextIsA ? _vcamB : _vcamA;
            var  inactiveConfiner = nextIsA ? _confinerA : _confinerB;

            ConfigureSlot(inactiveCam, inactiveConfiner, area);
            SyncFollowToVCam(inactiveCam); // 确保 Follow 正确（防止 SetFollowTarget 未被调用）
            inactiveCam.Priority = _globalActivePriority;
            activeCam.Priority   = _standbyPriority; // 降到待机但仍 > 0，Brain 可在混合期间读取其状态
            _activeSlot          = nextIsA ? 0 : 1;
        }

        /// <summary>
        /// 将最后已知的 Follow 目标同步到指定 VCam（若其 Follow 尚未设置或已过期）。
        /// </summary>
        private void SyncFollowToVCam(CinemachineCamera vcam)
        {
            if (vcam == null || _currentFollowTarget == null) return;
            if (vcam.Follow != _currentFollowTarget)
                vcam.Follow = _currentFollowTarget;
        }

        private static void ConfigureSlot(
            CinemachineCamera vcam, CinemachineConfiner2D confiner, CameraArea area)
        {
            // 1. Confiner
            if (confiner != null && area.ConfinerCollider != null)
            {
                confiner.BoundingShape2D = area.ConfinerCollider;
                // 限位多边形已在编辑器中预收缩（可视区域 - 视口半尺寸 = 相机中心运动范围）。
                // OversizeWindow.MaxWindowSize = 0.001f（极小正值）：
                //   使 Cinemachine 将实际视口高度裁剪至 0.001，几乎不再对多边形额外收缩，
                //   从而以预收缩后的多边形直接作为相机中心约束边界。
                //   对于小于视口的房间（预收缩后多边形退化为点），仍正确固定相机于中心。
                confiner.OversizeWindow = new CinemachineConfiner2D.OversizeWindowSettings
                {
                    Enabled       = true,
                    MaxWindowSize = 0.001f,
                    Padding       = 0.1f,
                };
                // BoundingShape2D 变更后必须刷新内部缓存路径，否则限位仍使用旧边界
                confiner.InvalidateLensCache();
            }
            else if (confiner != null && area.ConfinerCollider == null)
            {
                Debug.LogError(
                    $"[CameraStateController] {area.name} 未绑定 ConfinerCollider！" +
                    "请将子节点 AreaBoundary 的 PolygonCollider2D 拖入 CameraArea._confinerCollider 字段。");
            }

            // 2. 跟随行为覆盖
            if (area.OverrideFollowBehaviour)
            {
                var composer = vcam.GetComponent<CinemachinePositionComposer>();
                if (composer != null)
                {
                    // 屏幕位置（Y 偏下 → 玩家稍低于中心，上方更多视野）
                    var comp = composer.Composition;
                    comp.ScreenPosition   = area.ScreenPosition;
                    comp.DeadZone.Enabled = true;
                    comp.DeadZone.Size    = area.DeadZoneSize;
                    composer.Composition  = comp;

                    // 阻尼
                    var d = composer.Damping;
                    d.x = area.Damping.x;
                    d.y = area.Damping.y;
                    composer.Damping = d;

                    // 非对称 Y 阻尼：若扩展存在，将其按区域配置并清零 Composer Y 阻尼防止叠加
                    var asymDamp = vcam.GetComponent<CameraAsymmetricDampingExtension>();
                    if (asymDamp != null)
                    {
                        asymDamp.DampingDown = area.DampingDown;
                        asymDamp.DampingUp   = area.DampingUp;
                        var yd = composer.Damping;
                        yd.y = 0f;
                        composer.Damping = yd;
                    }

                    // 引领预测
                    var lah = composer.Lookahead;
                    lah.Enabled   = area.LookaheadTime > 0f;
                    lah.Time      = area.LookaheadTime;
                    lah.Smoothing = area.LookaheadSmoothing;
                    lah.IgnoreY   = true;  // 平台跳跃中 Y 轴 Lookahead 会在起跳时猛拉镜头，应关闭
                    composer.Lookahead = lah;

                    // 自适应 Lookahead：通知扩展当前区域配置的最大 Lookahead 值
                    var adaptiveLah = vcam.GetComponent<CameraAdaptiveLookaheadExtension>();
                    if (adaptiveLah != null)
                        adaptiveLah.SetConfiguredMax(area.LookaheadTime);
                }
            }

            // 3. 轴向约束
            var axisLock = vcam.GetComponent<CameraAxisLockExtension>();
            if (axisLock != null)
            {
                axisLock.LockX = area.LockHorizontal;
                axisLock.LockY = area.LockVertical;
                if (area.ConfinerCollider != null)
                {
                    var center   = area.ConfinerCollider.bounds.center;
                    axisLock.LockedX = center.x;
                    axisLock.LockedY = center.y;
                }
            }

            // 4. 下坠视野偏置（无论是否覆写跟随行为，始终按区域配置）
            var fallBias = vcam.GetComponent<CameraFallBiasExtension>();
            if (fallBias != null)
                fallBias.SetConfiguredMax(area.DisableFallBias ? 0f : -1f);
        }

        private static void ResetVCamExtensions(CinemachineCamera vcam)
        {
            if (vcam == null) return;
            vcam.GetComponent<CameraAsymmetricDampingExtension>()?.ResetState();
            vcam.GetComponent<CameraFallBiasExtension>()?.ResetState();
            vcam.GetComponent<CameraAdaptiveLookaheadExtension>()?.ResetState();
        }

        private void ApplyBlendProfile(CameraBlendProfileSO profile)
        {
            if (_brain != null && profile != null)
                _brain.DefaultBlend = profile.ToBlendDefinition();
        }

        // ── 运行时调试覆盖层 ──────────────────────────────────────────────────
#if UNITY_EDITOR || DEVELOPMENT_BUILD

        [Header("调试")]
        [Tooltip("运行时在屏幕左上角显示当前相机区域信息。\n仅在 Editor 和 Development Build 中有效。")]
        [SerializeField] private bool _showDebugOverlay = false;

        private GUIStyle _debugBoxStyle;
        private GUIStyle _debugTitleStyle;
        private GUIStyle _debugRowStyle;
        private GUIStyle _debugWarnStyle;

        private void InitDebugStyles()
        {
            if (_debugBoxStyle != null) return;

            var bg = new Texture2D(1, 1);
            bg.SetPixel(0, 0, new Color(0f, 0f, 0f, 0.72f));
            bg.Apply();

            _debugBoxStyle = new GUIStyle(GUI.skin.box)
            {
                normal    = { background = bg, textColor = Color.white },
                padding   = new RectOffset(10, 10, 8, 8),
                alignment = TextAnchor.UpperLeft,
                fontSize  = 12,
            };
            _debugTitleStyle = new GUIStyle(GUI.skin.label)
            {
                normal    = { textColor = new Color(1f, 0.85f, 0.25f) },
                fontStyle = FontStyle.Bold,
                fontSize  = 13,
            };
            _debugRowStyle = new GUIStyle(GUI.skin.label)
            {
                normal   = { textColor = new Color(0.88f, 0.88f, 0.88f) },
                fontSize = 12,
            };
            _debugWarnStyle = new GUIStyle(GUI.skin.label)
            {
                normal   = { textColor = new Color(1f, 0.45f, 0.35f) },
                fontSize = 12,
            };
        }

        private void OnGUI()
        {
            if (!Application.isPlaying || !_showDebugOverlay) return;
            InitDebugStyles();

            float x = 12f, y = 12f, w = 320f;

            // 计算高度（先收集内容）
            string areaName    = _currentArea != null ? _currentArea.name : "<无>";
            string slotLabel   = _activeSlot < 0 ? "未初始化"
                               : _activeSlot == 0 ? "VCam A"
                               : "VCam B";
            string followLabel = _currentFollowTarget != null
                               ? _currentFollowTarget.name
                               : "<未设置>";

            bool warnFollow   = _currentFollowTarget == null;
            bool warnNoVCam   = _vcamA == null && _vcamB == null;
            bool warnNoBrain  = _brain == null;

            // 区域状态（基线 + 触发区域集合）
            var zoneLines = new System.Collections.Generic.List<string>();
            string baselineName   = _roomBaselineArea != null ? _roomBaselineArea.name : "<未设置>";
            string baselineMarker = (_currentArea == _roomBaselineArea && _activeZones.Count == 0) ? " ◄ 激活" : "";
            zoneLines.Add($"  [基线] {baselineName}{baselineMarker}");
            for (int i = _activeZones.Count - 1; i >= 0; i--)
            {
                var e = _activeZones[i];
                string marker = (e.area == _currentArea) ? " ◄ 激活" : "";
                zoneLines.Add($"  [{e.priority}] {(e.area != null ? e.area.name : "null")}{marker}");
            }

            int lineCount = 5 + zoneLines.Count + (warnFollow ? 1 : 0) + (warnNoVCam ? 1 : 0) + (warnNoBrain ? 1 : 0);
            float rowH = 19f;
            float h    = 28f + lineCount * rowH + 8f;

            GUI.Box(new Rect(x, y, w, h), GUIContent.none, _debugBoxStyle);
            float cy = y + 8f;

            GUI.Label(new Rect(x + 8f, cy, w - 16f, 22f), "[ Camera State Controller ]", _debugTitleStyle);
            cy += 22f;

            GUI.Label(new Rect(x + 8f, cy, w - 16f, rowH), $"当前区域：{areaName}", _debugRowStyle);  cy += rowH;
            GUI.Label(new Rect(x + 8f, cy, w - 16f, rowH), $"活跃 VCam 槽：{slotLabel}", _debugRowStyle); cy += rowH;

            string vcamALabel = _vcamA != null ? $"{_vcamA.name} (P={_vcamA.Priority})" : "<未绑定>";
            string vcamBLabel = _vcamB != null ? $"{_vcamB.name} (P={_vcamB.Priority})" : "<未绑定>";
            GUI.Label(new Rect(x + 8f, cy, w - 16f, rowH), $"VCam A：{vcamALabel}", _debugRowStyle); cy += rowH;
            GUI.Label(new Rect(x + 8f, cy, w - 16f, rowH), $"VCam B：{vcamBLabel}", _debugRowStyle); cy += rowH;
            GUI.Label(new Rect(x + 8f, cy, w - 16f, rowH), $"Follow 目标：{followLabel}", warnFollow ? _debugWarnStyle : _debugRowStyle); cy += rowH;

            GUI.Label(new Rect(x + 8f, cy, w - 16f, rowH), "区域状态（基线 + 触发区域）：", _debugRowStyle); cy += rowH;
            foreach (var line in zoneLines)
            {
                GUI.Label(new Rect(x + 8f, cy, w - 16f, rowH), line, _debugRowStyle);
                cy += rowH;
            }

            if (warnFollow)
            { GUI.Label(new Rect(x + 8f, cy, w - 16f, rowH), "⚠ Follow 目标未设置（检查 _onPlayerSpawned）", _debugWarnStyle); cy += rowH; }
            if (warnNoVCam)
            { GUI.Label(new Rect(x + 8f, cy, w - 16f, rowH), "⚠ VCam A/B 均未绑定", _debugWarnStyle); cy += rowH; }
            if (warnNoBrain)
            { GUI.Label(new Rect(x + 8f, cy, w - 16f, rowH), "⚠ CinemachineBrain 未绑定", _debugWarnStyle); cy += rowH; }
        }

#endif
    }
}