修改摄像头移动代码

Assets/AIPagedLod/Scripts/WebGL/CameraBirdSec.cs

@@ -11,7 +11,6 @@ public class CameraBirdSec : MonoBehaviour
 {
     public Action beginDrag;
 
-    public Transform target; // 目标对象，摄像头将朝向此对象
     public float smoothSpeed = 0.125f; // 摄像头平滑移动的速度
     public float scrollSensitivity = 5f; // 鼠标滚轮的灵敏度
     public float rotateSpeed = 0.25f;
@@ -20,7 +19,6 @@ public class CameraBirdSec : MonoBehaviour
     public float maxDistance = 50f; // 摄像头与目标对象的最大距离
 
     public float currentDistance; // 当前摄像头与目标对象的距离
-    private Vector3 offset; // 摄像头与目标对象的偏移量
     private Vector3 velocity = Vector3.zero; // 摄像头移动的速度
     private bool isDragging = false; // 是否正在拖拽
     private Vector3 lastMousePosition; // 上一帧鼠标位置
@@ -40,19 +38,13 @@ public class CameraBirdSec : MonoBehaviour
     public bool fixMoveRange = false;
     public bool detailLod = false;
 
-    bool isRotate = false;
-
     bool onUI = false;
 
-    private Vector3 lastMouseMapPoint;
     private Camera _camera;
-    private bool scrollTargetLock = false;
 
     void Start()
     {
         _camera = this.GetComponent<Camera>();
-        // 计算偏移量
-        offset = transform.position - target.position;
     }
 
     private bool GetPointerOverUIElement(out GameObject uiElement)
@@ -110,11 +102,18 @@ public class CameraBirdSec : MonoBehaviour
         if (Input.GetAxis("Mouse ScrollWheel") != 0 && !onUI)
         {
             //定一个鼠标在地图上的位置
-            var mousePos = Input.mousePosition;
-            mousePos.z = math.abs(target.position.z - this.transform.position.z);
-            lastMouseMapPoint = _camera.ScreenToWorldPoint(mousePos);
-            scrollTargetLock = true;
-
+            var mousePosOnMap = Input.mousePosition;
+            mousePosOnMap.z = math.abs(-582 - this.transform.position.z);
+            mousePosOnMap = _camera.ScreenToWorldPoint(mousePosOnMap);
+
+            var cameraPosOnMap = this.transform.position;
+            cameraPosOnMap.z = -582;
+
+            var distance_y = Vector3.Distance(cameraPosOnMap, this.transform.position);
+            var distance_x = Vector3.Distance(cameraPosOnMap, mousePosOnMap);
+            var dir_x = (mousePosOnMap - cameraPosOnMap).normalized;
+            
+            
             if (detailLod)
             {
                 scrollSensitivity = math.clamp(currentDistance, 0, 10);
@@ -130,6 +129,17 @@ public class CameraBirdSec : MonoBehaviour
             {
                 OnDistanceChange?.Invoke(Input.GetAxis("Mouse ScrollWheel"));
             }
+            Vector3 targetPosition = transform.position;
+            targetPosition.z = -582 - currentDistance;
+
+            var distance_y_after = Vector3.Distance(targetPosition, cameraPosOnMap);
+            var targetScale = distance_y_after / distance_y;
+
+            var moveDistance = (distance_x * targetScale)-distance_x;
+
+            var finalPos = targetPosition - dir_x * moveDistance;
+            
+            transform.position = finalPos;
         }
 
         // 鼠标左键拖拽平移摄像头
@@ -143,7 +153,7 @@ public class CameraBirdSec : MonoBehaviour
         {
             isDragging = false;
         }
-
+        
         if (isDragging)
         {
             // 计算鼠标移动的偏移量
@@ -151,82 +161,21 @@ public class CameraBirdSec : MonoBehaviour
             // 根据偏移量计算摄像头的目标位置
             Vector3 moveDirection = Vector3.down * mouseOffset.y * translateSpeed +
                                     Vector3.left * mouseOffset.x * translateSpeed;
-            // 平滑移动摄像头到目标位置
-            target.position += moveDirection;
+            
+            Vector3 targetPosition=transform.position+ moveDirection;
             //限制移动范围
             if (fixMoveRange)
             {
-                Vector3 finalPos = target.localPosition;
+                Vector3 finalPos = targetPosition;
                 finalPos.x = Mathf.Clamp(finalPos.x, min_X, max_X);
                 finalPos.y = Mathf.Clamp(finalPos.y, min_Y, max_Y);
-                target.localPosition = finalPos;
-            }
-
-            // 计算目标位置
-            Vector3 targetPosition = target.position +
-                                     Quaternion.Euler(new Vector3(rotateXAngle, 0, 0)) * offset.normalized *
-                                     currentDistance;
-
-            // 摄像头平滑移动到目标位置
-            transform.position = Vector3.Lerp(transform.position, targetPosition, Time.deltaTime * smoothSpeed * 2);
-        }
-        else
-        {
-            if (isRotate)
-            {
-                Blink();
-            }
-            else
-            {
-                // 计算目标位置
-                Vector3 targetPosition = target.position +
-                                         Quaternion.Euler(new Vector3(rotateXAngle, rotateYAngle, 0)) *
-                                         offset.normalized * currentDistance;
-                // 摄像头平滑移动到目标位置
-                //transform.position = Vector3.Lerp(transform.position, targetPosition, Time.deltaTime * smoothSpeed);
-                transform.position = targetPosition; //Vector3.Lerp(transform.position, targetPosition, Time.deltaTime * smoothSpeed);
-
-                //if (Vector3.Distance(transform.position, targetPosition) < 1) {
-                //    transform.position = targetPosition;
-                //}
-                if (scrollTargetLock)
-                {
-                    //现在鼠标位置在地图上的点
-                    var mousePos = Input.mousePosition;
-                    mousePos.z = math.abs(target.position.z - this.transform.position.z);
-                    var nowMouseMapPoint = _camera.ScreenToWorldPoint(mousePos);
-                    var mouseMoveDir = (nowMouseMapPoint - lastMouseMapPoint).normalized;
-                    var mouseMoveDistance = Vector3.Distance(nowMouseMapPoint, lastMouseMapPoint);
-                    target.position -= mouseMoveDir * mouseMoveDistance;
-                    if (fixMoveRange)
-                    {
-                        Vector3 finalPos = target.localPosition;
-                        finalPos.x = Mathf.Clamp(finalPos.x, min_X, max_X);
-                        finalPos.y = Mathf.Clamp(finalPos.y, min_Y, max_Y);
-                        target.localPosition = finalPos;
-                    }
-                    scrollTargetLock = false;
-                }
+                targetPosition = finalPos;
             }
+            transform.position = targetPosition;
         }
-
-
         lastMousePosition = Input.mousePosition;
     }
-
-    public void Blink()
-    {
-        // 计算目标位置
-        Vector3 targetPosition = target.position + Quaternion.Euler(new Vector3(rotateXAngle, rotateYAngle, 0)) *
-            offset.normalized * currentDistance;
-
-        // 摄像头平滑移动到目标位置
-        transform.position = targetPosition;
-
-        //摄像头朝向目标对象
-        transform.rotation = Quaternion.LookRotation(target.position - this.transform.position, Vector3.up);
-    }
-
+    
     public void SetRange(float _minX, float _maxX, float _minY, float _maxY)
     {
         min_X = _minX;
@@ -237,10 +186,10 @@ public class CameraBirdSec : MonoBehaviour
         //限制移动范围
         if (fixMoveRange)
         {
-            Vector3 finalPos = target.localPosition;
+            Vector3 finalPos = transform.position;
             finalPos.x = Mathf.Clamp(finalPos.x, min_X, max_X);
             finalPos.y = Mathf.Clamp(finalPos.y, min_Y, max_Y);
-            target.localPosition = finalPos;
+            transform.position = finalPos;
         }
     }
 
@@ -253,10 +202,7 @@ public class CameraBirdSec : MonoBehaviour
         {
             fader.material.DOColor(Color.clear, 1.5f).onComplete = () => { fader.gameObject.SetActive(false); };
         };
-
-        this.target.localPosition = centerPos;
-        DOTween.To(() => this.currentDistance, x => this.currentDistance = x, distance, 0.5f);
-        this.Blink();
+        centerPos.z = -582 - currentDistance;
+        transform.position = centerPos;
     }
-
 }