摄像机区域的架构改动

Assets/_Game/Scripts/World/Map/MapPlayerTracker.cs

@@ -0,0 +1,55 @@
+using UnityEngine;
+
+namespace BaseGames.World.Map
+{
+    /// <summary>
+    /// 将玩家世界坐标转换为地图格子坐标，供 MapPanel 显示玩家位置图标（架构 15_MapShopModule §1.4）。
+    /// 挂在 Player GameObject 上（LateUpdate 每帧计算）。
+    /// </summary>
+    public class MapPlayerTracker : MonoBehaviour
+    {
+        [SerializeField] private Transform     _playerTransform;
+        [SerializeField] private MapDatabaseSO _database;
+
+        [Header("世界坐标 → 格子坐标换算参数")]
+        [SerializeField] private float _worldUnitsPerCell = 18f;    // 1 格 = N 世界单位
+
+        /// <summary>玩家当前所在房间 ID（用于地图高亮当前房间）。</summary>
+        public string  CurrentRoomId              { get; private set; }
+
+        /// <summary>玩家在当前格子房间内的归一化坐标（0~1）。</summary>
+        public Vector2 NormalizedPositionInRoom   { get; private set; }
+
+        // 缓存上一帧的格子坐标；格子不变则跳过 O(N) 搜索
+        private Vector2Int _lastCellPos = new Vector2Int(int.MinValue, int.MinValue);
+
+        private void LateUpdate()
+        {
+            if (_playerTransform == null || _database?.AllRooms == null) return;
+
+            Vector2Int cellPos = WorldToCell(_playerTransform.position);
+            if (cellPos == _lastCellPos) return;    // 格子未变，无需重新搜索
+            _lastCellPos = cellPos;
+
+            foreach (var room in _database.AllRooms)
+            {
+                if (room == null) continue;
+                var rect = new RectInt(room.GridPosition, room.GridSize);
+                if (rect.Contains(cellPos))
+                {
+                    CurrentRoomId = room.RoomId;
+                    Vector2 inRoom = (Vector2)(cellPos - room.GridPosition);
+                    NormalizedPositionInRoom = new Vector2(
+                        inRoom.x / Mathf.Max(1, room.GridSize.x),
+                        inRoom.y / Mathf.Max(1, room.GridSize.y));
+                    return;
+                }
+            }
+        }
+
+        private Vector2Int WorldToCell(Vector2 worldPos)
+            => new(
+                Mathf.FloorToInt(worldPos.x / _worldUnitsPerCell),
+                Mathf.FloorToInt(worldPos.y / _worldUnitsPerCell));
+    }
+}