488 lines
24 KiB
C#
488 lines
24 KiB
C#
using BaseGames.Core;
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using UnityEngine;
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namespace BaseGames.Player
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{
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/// <summary>
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/// 玩家物理移动组件。封装 Rigidbody2D 操作，提供跑动、跳跃、击退等接口。
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/// </summary>
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// 执行顺序必须早于 PlayerController（-100），确保每帧 FixedUpdate
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// 开头能在状态机写入速度之前先应用"强制清零"标记。
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[DefaultExecutionOrder(-200)]
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[RequireComponent(typeof(Rigidbody2D))]
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public class PlayerMovement : MonoBehaviour, IPassengerReceiver
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{
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[Header("配置")]
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[SerializeField] private PlayerMovementConfigSO _config;
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[Header("地面检测")]
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[SerializeField] private Transform _groundCheck;
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[SerializeField] private Vector2 _groundCheckSize = new Vector2(0.8f, 0.05f);
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[SerializeField] private LayerMask _groundLayer;
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// ── 运行时状态 ────────────────────────────────────────────────────────
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private Rigidbody2D _rb;
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private float _coyoteTimer;
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private float _wallCoyoteTimer;
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private int _wallCoyoteDir; // 离墙时记录的墙壁方向（+1 右 / -1 左）
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private bool _isGrounded;
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// Update 中调用 ZeroHorizontalVelocity 后设置此标记；
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// 下一个 FixedUpdate（-200，先于状态机 -100）读取并清零，
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// 防止状态机用旧输入把速度重新写成非零值。
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private bool _pendingHorizontalZero;
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// 移动平台速度双缓冲：Platform(-300) 写入 _next；Player(-200) 将 _next 换入 _current 并清零；
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// 状态机(-100) 的 Move() 将 _platformVelocity.x 叠加到水平速度，保持与平台同步。
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// 使用速度（而非 _rb.position+=）：Kinematic 平台的 MovePosition 已通过物理接触推动 Dynamic 乘客；
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// 若再手动写 position 会产生双重施加（2× 速度）。速度方案仅覆盖 velocity，无此问题。
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private Vector2 _platformVelocity; // 本帧消费（Move() 叠加到 velocity）
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private Vector2 _nextPlatformVelocity; // Platform(-300) 写入缓冲区
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// 玩家自身输入水平速度（不含平台分量）；由 Move() 写入，UpdateFacing / ApplyAirDrag 读此值。
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private float _inputVelocityX;
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private bool _isWallLeft;
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private bool _isWallRight;
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private bool _onOneWayPlatform;
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private int _facingDirection = 1;
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private bool _cancelWindowOpen;
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private SurfaceType _currentSurface = SurfaceType.Ground;
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private readonly Collider2D[] _groundBuffer = new Collider2D[4];
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private int _groundHitCount;
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#if UNITY_EDITOR
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// ── 运行时调试（Inspector 中可见）───────────────────────────────
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[Header("\u2500\u2500 \u8fd0\u884c\u65f6\u8c03\u8bd5 \u2500\u2500")]
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[SerializeField] private string _dbg_Position;
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[SerializeField] private float _dbg_VelocityX;
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[SerializeField] private float _dbg_VelocityY;
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[SerializeField] private bool _dbg_IsGrounded;
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[SerializeField] private bool _dbg_OnOneWayPlatform;
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[SerializeField] private bool _dbg_HasCoyoteTime;
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[SerializeField] private bool _dbg_HasWallCoyoteTime;
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[SerializeField] private bool _dbg_IsWallLeft;
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[SerializeField] private bool _dbg_IsWallRight;
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[SerializeField] private bool _dbg_CancelWindowOpen;
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[SerializeField] private int _dbg_FacingDirection;
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#endif
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public bool IsGrounded => _isGrounded;
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public bool HasCoyoteTime => _coyoteTimer > 0f;
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public bool HasWallCoyoteTime => _wallCoyoteTimer > 0f;
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public int WallCoyoteDir => _wallCoyoteDir;
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public bool IsWallLeft => _isWallLeft;
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public bool IsWallRight => _isWallRight;
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public bool OnOneWayPlatform => _onOneWayPlatform;
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public int FacingDirection => _facingDirection;
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public Rigidbody2D Rb => _rb;
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public bool CancelWindowOpen => _cancelWindowOpen;
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public SurfaceType CurrentSurface => _currentSurface;
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/// <summary>垂直速度大于零（处于上升弧段）。供 WallJumpState 判断起跳是否结束。</summary>
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public bool IsRising => _rb.velocity.y > 0f;
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private void Awake()
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{
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Debug.Assert(_config != null, "[PlayerMovement] _config 未赋值，请在 Inspector 中指定 PlayerMovementConfigSO。", this);
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Debug.Assert(_groundCheck != null, "[PlayerMovement] GroundCheck 子节点未赋值，地面检测将无法工作，请在 Inspector 中指定 GroundCheck Transform。", this);
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_rb = GetComponent<Rigidbody2D>();
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// 开启位置插值：在物理帧（50Hz）与渲染帧（60Hz+）之间平滑视觉位置，消除跳帧抖动。
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// SpritePixelSnapper（LateUpdate +1000）在插值结果基础上吸附到像素网格，
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// 与 CameraPixelSnapper 同格对齐，消除亚像素模糊；停止时 ≤2 帧像素追赶不可感知。
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_rb.interpolation = RigidbodyInterpolation2D.Interpolate;
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// 开启连续碰撞检测（CCD）：Kinematic 移动平台通过 MovePosition 将 Dynamic 角色推向墙体时，
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// CCD 会沿移动路径追踪碰撞，确保角色在物理层被墙体表面拦截，而不是在离散步骤中穿透墙体。
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_rb.collisionDetectionMode = CollisionDetectionMode2D.Continuous;
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}
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private void FixedUpdate()
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{
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// 平台速度双缓冲换入：Platform(-300) 已写入 _next；换入 _current 供 Move() 叠加。
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_platformVelocity = _nextPlatformVelocity;
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_nextPlatformVelocity = Vector2.zero;
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// 优先处理来自 Update 的强制清零请求（在状态机 OnStateFixedUpdate 之前执行）。
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if (_pendingHorizontalZero)
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{
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_inputVelocityX = 0f;
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_rb.velocity = new Vector2(0f, _rb.velocity.y);
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_pendingHorizontalZero = false;
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}
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CheckGrounded();
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CheckWalls();
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if (_isGrounded)
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_coyoteTimer = _config.CoyoteTime;
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else
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_coyoteTimer = Mathf.Max(0f, _coyoteTimer - Time.fixedDeltaTime);
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_wallCoyoteTimer = Mathf.Max(0f, _wallCoyoteTimer - Time.fixedDeltaTime);
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#if UNITY_EDITOR
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_dbg_VelocityX = _rb.velocity.x;
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_dbg_VelocityY = _rb.velocity.y;
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_dbg_IsGrounded = _isGrounded;
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_dbg_OnOneWayPlatform = _onOneWayPlatform;
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_dbg_HasCoyoteTime = _coyoteTimer > 0f;
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_dbg_HasWallCoyoteTime = _wallCoyoteTimer > 0f;
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_dbg_IsWallLeft = _isWallLeft;
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_dbg_IsWallRight = _isWallRight;
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_dbg_CancelWindowOpen = _cancelWindowOpen;
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_dbg_FacingDirection = _facingDirection;
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_dbg_Position = $"({transform.position.x:F1}, {transform.position.y:F1})";
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#endif
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}
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// ── 移动 ──────────────────────────────────────────────────────────────
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/// <summary>
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/// 直接赋予目标水平速度（按键即全速，松键即停，无加速过渡）。
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/// 地面状态每帧直接到达全速；空中调用时同样即时，但配合 ApplyAirDrag
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/// 在无输入时自然减速，保留跳出时的动量。
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/// 若当前站在移动平台上，自动叠加 <c>_platformVelocity.x</c> 保持同步；
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/// <c>_inputVelocityX</c> 只记录玩家输入分量，供 UpdateFacing / ApplyAirDrag 使用。
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/// 当平台速度方向与已贴墙方向相同时，不叠加平台水平速度，
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/// 防止速度叠加把角色推入墙体（物理接触已被 CCD 拦截，但速度覆盖会继续施力）。
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/// </summary>
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public void Move(float speedX)
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{
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_inputVelocityX = speedX;
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// 若平台将角色推向已贴墙一侧，忽略平台水平分量：
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// 物理层（CCD + 碰撞体）已阻止角色穿墙，速度层若继续施加同向力，
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// 会在每帧产生累积穿透，导致角色卡入或被弹出墙体。
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float platformX = _platformVelocity.x;
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if ((platformX > 0f && _isWallRight) || (platformX < 0f && _isWallLeft))
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platformX = 0f;
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_rb.velocity = new Vector2(speedX + platformX, _rb.velocity.y);
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}
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/// <summary>
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/// 空中无输入时施加空气阻力：水平速度乘以 <paramref name="factor"/>，
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/// 低于阈值时归零，避免速度无限趋近 0。
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/// 在 FallState / JumpState / WallJumpState 的 OnStateFixedUpdate 中调用。
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/// </summary>
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public void ApplyAirDrag(float factor)
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{
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// 空中不在平台上，_platformVelocity = 0，velocity.x == _inputVelocityX；同步写回保持一致。
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float newX = _rb.velocity.x * factor;
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if (Mathf.Abs(newX) < 0.05f) newX = 0f;
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_inputVelocityX = newX;
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_rb.velocity = new Vector2(newX, _rb.velocity.y);
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}
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// ── 跳跃 ──────────────────────────────────────────────────────────────
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public void Jump(bool isVariable = true)
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{
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_rb.velocity = new Vector2(_rb.velocity.x, _config.JumpForce);
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_coyoteTimer = 0f;
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}
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public void CutJump()
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{
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if (_rb.velocity.y > 0f)
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_rb.velocity = new Vector2(_rb.velocity.x, _rb.velocity.y * _config.JumpCutMultiplier);
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}
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/// <summary>
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/// 二段跳。覆盖当前垂直速度为 DoubleJumpForce。
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/// FallState / JumpState 在检测到 HasAbility(DoubleJump) && AirJumpsLeft > 0 时调用。
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/// </summary>
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public void DoubleJump()
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{
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_rb.velocity = new Vector2(_rb.velocity.x, _config.DoubleJumpForce);
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_coyoteTimer = 0f;
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}
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// ── 重力 ──────────────────────────────────────────────────────────────
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public void SetGravityScale(float scale) => _rb.gravityScale = scale;
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// ── 击退 ──────────────────────────────────────────────────────────────
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public void ApplyKnockback(Vector2 direction, float force)
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=> _rb.velocity = direction.normalized * force;
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// ── 速度控制 ──────────────────────────────────────────────────────────
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public void ZeroVelocity() { _inputVelocityX = 0f; _rb.velocity = Vector2.zero; }
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public void ZeroHorizontalVelocity()
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{
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_inputVelocityX = 0f;
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_rb.velocity = new Vector2(0f, _rb.velocity.y);
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// 设置标记：下一个 FixedUpdate 开头再次强制清零，
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// 防止因读到旧输入而把速度重新写成非零值。
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_pendingHorizontalZero = true;
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}
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// ── 朝向 ──────────────────────────────────────────────────────────────
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public void UpdateFacing()
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{
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// 读取玩家输入速度（不含平台分量），避免平台横向运动驱动朝向翻转。
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float vx = _inputVelocityX;
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if (Mathf.Abs(vx) < 0.1f) return;
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int dir = vx > 0f ? 1 : -1;
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if (dir == _facingDirection) return;
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_facingDirection = dir;
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// 翻转整个 Transform（而非仅 SpriteRenderer.flipX），
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// 确保 WeaponSocket / SkillSocket 等所有子节点的 HitBox 及投射物生成点随朝向镜像。
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transform.localScale = new Vector3(dir, 1f, 1f);
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}
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/// <summary>
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/// 强制设定朝向，并同步清零速度，确保传送/出生后不被旧速度立即覆盖。
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/// dir：+1 = 朝右，-1 = 朝左。
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/// </summary>
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public void SetFacingImmediate(int dir)
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{
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if (dir == 0) return;
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_facingDirection = dir;
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transform.localScale = new Vector3(dir, 1f, 1f);
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_rb.velocity = Vector2.zero;
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}
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/// <summary>
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/// 仅翻转视觉朝向，不修改速度。用于蹬墙跳瞬间需要立即转向而不中断跳跃速度的场景。
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/// dir：+1 = 朝右，-1 = 朝左。
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/// </summary>
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public void FlipFacing(int dir)
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{
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if (dir == 0 || dir == _facingDirection) return;
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_facingDirection = dir;
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transform.localScale = new Vector3(dir, 1f, 1f);
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}
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// ── 取消窗口 ──────────────────────────────────────────────────────────
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public void SetCancelWindowOpen(bool open) => _cancelWindowOpen = open;
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// ── 墙壁土狼时间 ──────────────────────────────────────────────────────
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/// <summary>
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/// 由 WallSlideState 在切换到 FallState 时调用：启动墙壁土狼计时器。
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/// 窗口内（HasWallCoyoteTime == true）按跳跃键仍可触发蹬墙跳。
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/// wallDir：+1 = 右墙 / -1 = 左墙。
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/// </summary>
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public void StartWallCoyote(int wallDir)
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{
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_wallCoyoteTimer = _config.WallCoyoteTime;
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_wallCoyoteDir = wallDir;
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}
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/// <summary>消耗墙壁土狼时间，防止同一帧被多次触发。</summary>
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public void ConsumeWallCoyote() => _wallCoyoteTimer = 0f;
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// ── IPassengerReceiver ────────────────────────────────────────────────
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/// <summary>
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/// MovingPlatform.FixedUpdate(-300) 推送本帧平台期望位移。
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/// 转换为速度（delta / fixedDeltaTime）写入下帧缓冲区 _next，
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/// 在本类 FixedUpdate(-200) 换入，由 Move() 叠加到水平速度。
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/// </summary>
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public void SetPlatformDelta(Vector2 delta)
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=> _nextPlatformVelocity += delta / Time.fixedDeltaTime;
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/// <summary>
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/// 乘客离开平台时调用，传入平台当前帧速度。
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/// 水平速度已由最后一次 Move() 自然携带（包含 _platformVelocity.x），仅继承垂直分量。
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/// </summary>
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public void OnLeavePlatform(Vector2 platformVelocity)
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=> _rb.velocity += new Vector2(0f, platformVelocity.y);
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// ── 冲刺 ──────────────────────────────────────────────────────────────
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/// <summary>
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/// 施加冲刺速度（DashState/DashState 调用）。
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/// direction 应为归一化水平向量（±1, 0）。
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/// 冲刺期间调用 SetGravityScale(0) 可关闭重力；结束后恢复默认重力。
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/// </summary>
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public void Dash(Vector2 direction, float speed)
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{
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_rb.velocity = new Vector2(direction.x * speed, 0f);
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}
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/// <summary>
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/// 壁滑：将垂直速度限制为 -speed（每帧调用以约束最大下滑速度）。
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/// WallSlideState.OnStateFixedUpdate 根据正常/受限模式传入不同速度。
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/// </summary>
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public void ApplyWallSlide(float speed)
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{
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float targetY = -speed;
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if (_rb.velocity.y < targetY)
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_rb.velocity = new Vector2(_rb.velocity.x, targetY);
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}
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/// <summary>
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/// 背墙跳（Jump Away）：远离墙壁斜上方弹出。
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/// wallDir = +1 (右墙) 或 -1 (左墙)，水平方向与之相反。
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/// </summary>
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public void WallJumpAway(int wallDir)
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{
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_rb.velocity = new Vector2(-wallDir * _config.WallJumpAwayForceX, _config.WallJumpAwayForceY);
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_coyoteTimer = 0f;
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}
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/// <summary>
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/// 对墙跳（Jump Toward）：沿墙壁方向偏向正上方弹出，水平分量较小。
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/// wallDir = +1 (右墙) 或 -1 (左墙)，水平方向与之相同。
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/// </summary>
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public void WallJumpToward(int wallDir)
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{
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_rb.velocity = new Vector2(wallDir * _config.WallJumpTowardForceX, _config.WallJumpTowardForceY);
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_coyoteTimer = 0f;
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}
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/// <summary>将垂直速度归零（抓墙悬挂时每帧调用，防止下滑）。</summary>
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public void ZeroVerticalVelocity()
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{
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if (_rb.velocity.y < 0f)
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_rb.velocity = new Vector2(_rb.velocity.x, 0f);
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}
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/// <summary>
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/// 单向平台穿落（↓ + 跳跃键触发）。
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/// 找到脚下的 <see cref="IDropThrough"/> 并临时禁用其碰撞器；
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/// 同帧清除 IsGrounded / OnOneWayPlatform，状态机无需等到下一物理帧即可转换到 FallState。
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/// </summary>
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public void DropThroughPlatform()
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{
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if (!_onOneWayPlatform) return;
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for (int i = 0; i < _groundHitCount; i++)
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{
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if (_groundBuffer[i] != null &&
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_groundBuffer[i].TryGetComponent<IDropThrough>(out var platform))
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{
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platform.TriggerDropThrough();
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// 立即清除着地状态，让状态机本帧即可切换到 FallState
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_isGrounded = false;
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_onOneWayPlatform = false;
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_coyoteTimer = 0f;
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break;
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}
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}
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}
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// ── Physics 检测 ──────────────────────────────────────────────────────
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private void CheckGrounded()
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{
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if (_groundCheck == null) return;
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_groundHitCount = Physics2D.OverlapBoxNonAlloc(
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_groundCheck.position, _groundCheckSize, 0f, _groundBuffer, _groundLayer);
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_isGrounded = _groundHitCount > 0;
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// 检测是否站在单向平台（含 IDropThrough 组件的碰撞体）
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_onOneWayPlatform = false;
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for (int i = 0; i < _groundHitCount; i++)
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{
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if (_groundBuffer[i] != null &&
|
||
_groundBuffer[i].TryGetComponent<IDropThrough>(out _))
|
||
{
|
||
_onOneWayPlatform = true;
|
||
break;
|
||
}
|
||
}
|
||
|
||
_currentSurface = (_isGrounded && _onOneWayPlatform)
|
||
? SurfaceType.OneWayPlatform
|
||
: SurfaceType.Ground;
|
||
}
|
||
|
||
private void CheckWalls()
|
||
{
|
||
float len = _config.WallRayLength;
|
||
float offY = _config.WallRayOffsetY;
|
||
Vector2 pos = (Vector2)transform.position + Vector2.up * offY;
|
||
|
||
_isWallLeft = Physics2D.Raycast(pos, Vector2.left, len, _groundLayer);
|
||
_isWallRight = Physics2D.Raycast(pos, Vector2.right, len, _groundLayer);
|
||
}
|
||
|
||
private void OnDrawGizmos()
|
||
{
|
||
#if UNITY_EDITOR
|
||
// ── 1. 角色物理轮廓（浅绿，始终可见）────────────────────────────
|
||
Gizmos.color = new Color(0.4f, 1f, 0.4f, 0.65f);
|
||
foreach (var col in GetComponents<Collider2D>())
|
||
{
|
||
if (col.isTrigger) continue;
|
||
BaseGames.Combat.HitBox.DrawCollider2DWire(col);
|
||
}
|
||
|
||
// ── 2. 朝向箭头（金黄）──────────────────────────────────────────
|
||
Vector3 center = transform.position;
|
||
Vector3 arrowEnd = center + new Vector3(_facingDirection * 0.55f, 0f, 0f);
|
||
DrawArrow2D(center, arrowEnd, new Color(1f, 0.85f, 0.1f, 0.95f));
|
||
|
||
// ── 3. 站立检测框（落地亮绿 / 未落地淡绿；未赋值时显示红色警告框）──
|
||
if (_groundCheck == null)
|
||
{
|
||
Gizmos.color = new Color(1f, 0.1f, 0.1f, 0.9f);
|
||
Gizmos.DrawWireSphere(transform.position, 0.25f);
|
||
#if UNITY_EDITOR
|
||
UnityEditor.Handles.color = new Color(1f, 0.1f, 0.1f, 1f);
|
||
UnityEditor.Handles.Label(transform.position + Vector3.up * 0.6f, "GroundCheck 未赋值!");
|
||
#endif
|
||
}
|
||
else
|
||
{
|
||
bool grounded = Application.isPlaying && _isGrounded;
|
||
Gizmos.color = grounded
|
||
? new Color(0.1f, 1f, 0.3f, 0.9f)
|
||
: new Color(0.4f, 0.85f, 0.4f, 0.35f);
|
||
BaseGames.Combat.HitBox.DrawWireRect2D(_groundCheck.position, _groundCheckSize);
|
||
}
|
||
|
||
// ── 4. 靠墙检测射线（碰墙橙色 / 未碰淡黄，带端点圆点）─────────
|
||
if (_config == null) return;
|
||
float wLen = _config.WallRayLength;
|
||
float wOffY = _config.WallRayOffsetY;
|
||
Vector2 wallPos = (Vector2)transform.position + Vector2.up * wOffY;
|
||
|
||
bool lHit = Application.isPlaying && _isWallLeft;
|
||
bool rHit = Application.isPlaying && _isWallRight;
|
||
|
||
Gizmos.color = lHit ? new Color(1f, 0.45f, 0f, 1f) : new Color(1f, 0.85f, 0.3f, 0.4f);
|
||
Gizmos.DrawRay(wallPos, Vector2.left * wLen);
|
||
BaseGames.Combat.HitBox.DrawWireCircle2D((Vector3)(wallPos + Vector2.left * wLen), 0.04f, 8);
|
||
|
||
Gizmos.color = rHit ? new Color(1f, 0.45f, 0f, 1f) : new Color(1f, 0.85f, 0.3f, 0.4f);
|
||
Gizmos.DrawRay(wallPos, Vector2.right * wLen);
|
||
BaseGames.Combat.HitBox.DrawWireCircle2D((Vector3)(wallPos + Vector2.right * wLen), 0.04f, 8);
|
||
#endif
|
||
}
|
||
|
||
private void OnDrawGizmosSelected()
|
||
{
|
||
#if UNITY_EDITOR
|
||
// 运行时：用青色箭头显示速度向量（仅选中时，按比例缩放）
|
||
if (!Application.isPlaying || _rb == null) return;
|
||
Vector2 vel = _rb.velocity;
|
||
if (vel.sqrMagnitude < 0.01f) return;
|
||
DrawArrow2D(transform.position, transform.position + (Vector3)(vel * 0.12f),
|
||
new Color(0.2f, 0.9f, 1f, 0.9f), 0.1f);
|
||
#endif
|
||
}
|
||
|
||
// 在 Gizmos 空间绘制带箭头的 2D 有向线段
|
||
private static void DrawArrow2D(Vector3 from, Vector3 to, Color color, float headLen = 0.15f)
|
||
{
|
||
Vector3 dir = to - from;
|
||
if (dir.sqrMagnitude < 0.0001f) return;
|
||
dir = dir.normalized;
|
||
Gizmos.color = color;
|
||
Gizmos.DrawLine(from, to);
|
||
|
||
// 将 -dir 分别旋转 ±35° 得到箭头两翼
|
||
float cos = 0.8192f; // Mathf.Cos(35° in radians)
|
||
float sin = 0.5736f; // Mathf.Sin(35°)
|
||
float bx = -dir.x, by = -dir.y;
|
||
Vector3 wing1 = new Vector3(bx * cos - by * sin, bx * sin + by * cos, 0f) * headLen;
|
||
Vector3 wing2 = new Vector3(bx * cos + by * sin, -bx * sin + by * cos, 0f) * headLen;
|
||
Gizmos.DrawLine(to, to + wing1);
|
||
Gizmos.DrawLine(to, to + wing2);
|
||
}
|
||
}
|
||
|
||
/// <summary>当前所在地面类型（用于脚步声等反馈）。</summary>
|
||
public enum SurfaceType
|
||
{
|
||
Ground,
|
||
OneWayPlatform,
|
||
Slope,
|
||
Ice,
|
||
}
|
||
}
|