摄像机区域的优化
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@@ -1,46 +1,173 @@
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using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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using BaseGames.Core;
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namespace BaseGames.Camera
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{
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/// <summary>
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/// 相机区域切换触发器。玩家进入时通知 <see cref="CameraStateController"/> 切换到目标 <see cref="CameraArea"/>。
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/// 相机区域切换触发器。
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/// 当触发区域重叠时，玩家必须先离开当前所在的触发区域，才会切换到下一个区域，
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/// 而不是进入重叠区域时立即切换。
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/// </summary>
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[ExecuteAlways]
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[RequireComponent(typeof(BoxCollider2D))]
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[RequireComponent(typeof(PolygonCollider2D))]
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public class CameraTriggerZone : MonoBehaviour
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{
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[SerializeField] private CameraArea _targetArea;
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[Tooltip("玩家离开此触发区域时回退到的区域（留空则退出时不做处理）。\n" +
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"通常设为上级/相邻的包含区域，使玩家返回时相机自然过渡。")]
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[SerializeField] private CameraArea _exitFallbackArea;
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[Tooltip("触发区域优先级。同时在多个触发区域内时，高优先级区域胜出。\n" +
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"相同优先级则后进入的胜出（推荐默认值 1）。")]
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[SerializeField] private int _priority = 1;
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[SerializeField] private string _playerTag = "Player";
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private BoxCollider2D _collider;
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private PolygonCollider2D _collider;
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private bool _isPlayerInside;
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// ── 静态：跨实例共享触发状态 ──────────────────────────────────────────
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// 玩家当前物理上所在的所有触发区域（按进入顺序排列）
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private static readonly List<CameraTriggerZone> s_InsideZones = new();
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// 当前已向 ICameraService 发出 SwitchArea 请求的触发区域
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private static CameraTriggerZone s_ActiveZone;
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private void Awake()
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{
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_collider = GetComponent<BoxCollider2D>();
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_collider = GetComponent<PolygonCollider2D>();
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_collider.isTrigger = true;
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}
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private void OnDisable()
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{
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if (!Application.isPlaying) return;
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if (!_isPlayerInside) return;
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_isPlayerInside = false;
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s_InsideZones.Remove(this);
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if (s_ActiveZone == this)
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Deactivate(this);
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}
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/// <summary>
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/// 若玩家出生时已在触发区域内，OnTriggerEnter2D 不会触发。
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/// 延迟一帧（确保 RoomController.Start 先完成基准区域设置）后主动检测。
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/// </summary>
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private IEnumerator Start()
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{
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if (!Application.isPlaying) yield break;
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// 等一帧：让 RoomController.Start（priority=0）先建立基准区域，
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// 再以 _priority 叠加子区域，保证栈顺序正确。
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yield return null;
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if (_targetArea == null) yield break;
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GameObject player = GameObject.FindWithTag(_playerTag);
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if (player == null || !_collider.OverlapPoint(player.transform.position)) yield break;
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// OnTriggerEnter2D 可能已先一步处理，避免重复加入
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if (!_isPlayerInside)
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{
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_isPlayerInside = true;
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s_InsideZones.Add(this);
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}
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if (s_ActiveZone == null)
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Activate(this);
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}
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private void OnTriggerEnter2D(Collider2D other)
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{
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if (!Application.isPlaying) return;
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if (!other.CompareTag(_playerTag)) return;
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if (_targetArea == null || _isPlayerInside) return;
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var service = ServiceLocator.GetOrDefault<ICameraService>();
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if (service == null) return;
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_isPlayerInside = true;
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s_InsideZones.Add(this);
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if (_targetArea != null)
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service.SwitchArea(_targetArea);
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// 没有激活的触发区域 → 立即切换
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// 已有激活的触发区域 → 等玩家离开后再接管（避免重叠区域间提前切换）
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if (s_ActiveZone == null)
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Activate(this);
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}
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private void OnTriggerExit2D(Collider2D other)
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{
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if (!Application.isPlaying) return;
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if (!other.CompareTag(_playerTag)) return;
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if (!_isPlayerInside) return;
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_isPlayerInside = false;
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s_InsideZones.Remove(this);
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if (s_ActiveZone == this)
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Deactivate(this);
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}
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// ── 静态辅助方法 ────────────────────────────────────────────────────────
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private static void Activate(CameraTriggerZone zone)
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{
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s_ActiveZone = zone;
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ServiceLocator.GetOrDefault<ICameraService>()?.SwitchArea(zone._targetArea, zone._priority);
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}
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/// <summary>
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/// 离开 <paramref name="leaving"/> 时的处理：
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/// 若还有其他触发区域，先激活最优者再释放 leaving（避免短暂回退到房间基线）；
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/// 否则直接释放并使用 <see cref="_exitFallbackArea"/>。
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/// </summary>
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private static void Deactivate(CameraTriggerZone leaving)
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{
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ICameraService svc = ServiceLocator.GetOrDefault<ICameraService>();
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if (s_InsideZones.Count > 0)
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{
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// 先激活下一个，再释放 leaving —— 此时 _currentArea 已更新为 next，
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// ReleaseArea(leaving) 中 wasActive=false，仅从 _activeZones 移除，不触发额外跳转
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CameraTriggerZone next = SelectBest();
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s_ActiveZone = next;
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svc?.SwitchArea(next._targetArea, next._priority);
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svc?.ReleaseArea(leaving._targetArea, null);
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}
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else
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{
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s_ActiveZone = null;
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svc?.ReleaseArea(leaving._targetArea, leaving._exitFallbackArea);
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}
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}
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/// <summary>从 <see cref="s_InsideZones"/> 中选出优先级最高的区域。</summary>
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private static CameraTriggerZone SelectBest()
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{
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CameraTriggerZone best = s_InsideZones[0];
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for (int i = 1; i < s_InsideZones.Count; i++)
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if (s_InsideZones[i]._priority > best._priority)
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best = s_InsideZones[i];
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return best;
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}
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private void OnDrawGizmos()
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{
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if (_collider == null) _collider = GetComponent<BoxCollider2D>();
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Gizmos.color = new Color(0.2f, 0.8f, 1f, 0.25f);
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if (_collider == null) _collider = GetComponent<PolygonCollider2D>();
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if (_collider == null || _collider.pathCount == 0) return;
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var pts = new System.Collections.Generic.List<Vector2>();
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_collider.GetPath(0, pts);
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if (pts.Count < 2) return;
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Gizmos.matrix = transform.localToWorldMatrix;
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Gizmos.DrawCube(_collider.offset, _collider.size);
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Vector2 off = _collider.offset;
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Gizmos.color = new Color(0.2f, 0.8f, 1f, 0.8f);
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Gizmos.DrawWireCube(_collider.offset, _collider.size);
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for (int i = 0; i < pts.Count; i++)
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{
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Vector2 a = pts[i] + off;
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Vector2 b = pts[(i + 1) % pts.Count] + off;
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Gizmos.DrawLine(new Vector3(a.x, a.y), new Vector3(b.x, b.y));
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}
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}
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}
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}
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