(client) feat:实现摄像机跟踪与移动，实现任意位置生成实体，实现更安全的资源加载方式（指定unity内部加载资源） (#42)

Co-authored-by: zzdxxz <2079238449@qq.com>
Co-committed-by: zzdxxz <2079238449@qq.com>

Client/Assets/Scripts/CameraControl/CameraControl.cs

@@ -1,13 +1,85 @@
+using Base;
 using UnityEngine;
 
 namespace CameraControl
 {
-    public class CameraControl:MonoBehaviour,Base.ITick
+    public class CameraControl : Utils.MonoSingleton<CameraControl>, ITick, ITickUI
     {
-        public Entity.Entity focusedEntity=null;
+        // 当前被聚焦的目标实体
+        public Entity.Entity focusedEntity = null;
+
+        // Camera movement variables
+        private Vector3 _dragOrigin;
+        private bool _isDragging = false;
+        private float _zoomSpeed = 5f;
+        private float _minZoom = 2f;
+        private float _maxZoom = 20f;
+
+        private Camera _camera;
+
+        protected override void OnStart()
+        {
+            _camera = Camera.main;
+            if (_camera == null)
+            {
+                _camera = FindFirstObjectByType<Camera>();
+            }
+        }
         public void Tick()
         {
-            
+            if (focusedEntity)
+            {
+                // Follow the focused entity's position
+                var targetPosition = new Vector3(
+                    focusedEntity.Position.x,
+                    focusedEntity.Position.y,
+                    _camera.transform.position.z);
+
+                _camera.transform.position = Vector3.Lerp(
+                    _camera.transform.position,
+                    targetPosition,
+                    Time.fixedDeltaTime * 5f);
+            }
         }
+
+        public void TickUI()
+        {
+            HandleMiddleMouseDrag();
+            HandleMouseZoom();
+        }
+
+        private void HandleMiddleMouseDrag()
+        {
+            // Start drag
+            if (Input.GetMouseButtonDown(2)) // Middle mouse button
+            {
+                _dragOrigin = _camera.ScreenToWorldPoint(Input.mousePosition);
+                _isDragging = true;
+                focusedEntity = null; // Clear focus when manually moving camera
+            }
+
+            // During drag
+            if (Input.GetMouseButton(2) && _isDragging)
+            {
+                var difference = _dragOrigin - _camera.ScreenToWorldPoint(Input.mousePosition);
+                _camera.transform.position += difference;
+            }
+
+            // End drag
+            if (Input.GetMouseButtonUp(2))
+            {
+                _isDragging = false;
+            }
+        }
+
+        private void HandleMouseZoom()
+        {
+            var scroll = Input.GetAxis("Mouse ScrollWheel");
+            if (scroll == 0) return;
+            var newSize = _camera.orthographicSize - scroll * _zoomSpeed;
+            _camera.orthographicSize = Mathf.Clamp(newSize, _minZoom, _maxZoom);
+        }
+
+  
     }
 }