(client) feat:实现掉落物，UI显示，维度

Client/Assets/Scripts/Map/Dimension.cs

@@ -16,7 +16,8 @@ namespace Map
         private string _dimensionId;
 
         [SerializeField] public MapGenerator mapGenerator;
-
+        
+        public Vector3 cameraPosition;
         /// <summary>
         /// 获取此维度的唯一标识符。
         /// </summary>
@@ -73,6 +74,12 @@ namespace Map
 
         }
 
+        private void Start()
+        {
+            var size = mapGenerator.baseMap.GetSize();
+            cameraPosition = new Vector3(size.x / 2f, size.y / 2f, -10)+transform.position;
+        }
+
         private void OnDestroy()
         {
             // 当 Dimension 对象被销毁时（例如，场景卸载），从 Program 和 EntityManage 注销