新增CameraController，现在项目可以正常运作了。

client/assets/scripts/App/Game/CameraController.ts

@@ -0,0 +1,138 @@
+import { Camera, Component, Node, Vec3, _decorator } from 'cc';
+
+const { ccclass, property } = _decorator;
+
+/**
+ * CameraController 摄像机控制器
+ * 负责让摄像机跟随指定的目标物体
+ */
+@ccclass('CameraController')
+export class CameraController extends Component {
+    /** 跟随目标 */
+    private target: Node = null;
+
+    /** 摄像机节点 */
+    private cameraNode: Node = null;
+
+    /** 摄像机组件 */
+    private camera: Camera = null;
+
+    /** 相对偏移量 */
+    private offset: Vec3 = new Vec3(0, 10, 8);
+
+    /** 跟随速度 */
+    @property({ displayName: '跟随速度' })
+    public followSpeed: number = 5;
+
+    /** 是否平滑跟随 */
+    @property({ displayName: '平滑跟随' })
+    public smoothFollow: boolean = true;
+
+    onLoad() {
+        this.findMainCamera();
+    }
+
+    /**
+     * 查找主摄像机
+     */
+    private findMainCamera(): void {
+        // 查找名为 "Main Camera" 的摄像机
+        const mainCameraNode = this.node.scene.getChildByName('Main Camera');
+        if (mainCameraNode) {
+            this.cameraNode = mainCameraNode;
+            this.camera = mainCameraNode.getComponent(Camera);
+            console.log('[CameraController] 找到主摄像机:', mainCameraNode.name);
+        } else {
+            console.error('[CameraController] 未找到主摄像机(Main Camera)');
+        }
+    }
+
+    /**
+     * 设置跟随目标
+     * @param target 跟随的目标节点
+     */
+    public setTarget(target: Node): void {
+        this.target = target;
+
+        if (this.target && this.cameraNode) {
+            // 立即设置初始位置
+            this.updateCameraPosition(false);
+            console.log('[CameraController] 设置跟随目标:', target.name);
+        }
+    }
+
+    /**
+     * 设置摄像机偏移量
+     * @param offset 相对于目标的偏移量
+     */
+    public setOffset(offset: Vec3): void {
+        this.offset.set(offset);
+    }
+
+    /**
+     * 获取当前跟随目标
+     */
+    public getTarget(): Node {
+        return this.target;
+    }
+
+    /**
+     * 获取摄像机节点
+     */
+    public getCameraNode(): Node {
+        return this.cameraNode;
+    }
+
+    update(deltaTime: number) {
+        if (this.target && this.cameraNode) {
+            this.updateCameraPosition(this.smoothFollow, deltaTime);
+        }
+    }
+
+    /**
+     * 更新摄像机位置
+     * @param smooth 是否使用平滑跟随
+     * @param deltaTime 帧时间(smooth为true时需要)
+     */
+    private updateCameraPosition(smooth: boolean = true, deltaTime: number = 0): void {
+        if (!this.target || !this.cameraNode) {
+            return;
+        }
+
+        // 计算目标位置
+        const targetPosition = new Vec3();
+        Vec3.add(targetPosition, this.target.worldPosition, this.offset);
+
+        if (smooth && deltaTime > 0) {
+            // 平滑跟随
+            const currentPosition = this.cameraNode.worldPosition;
+            const newPosition = new Vec3();
+            Vec3.lerp(newPosition, currentPosition, targetPosition, this.followSpeed * deltaTime);
+            this.cameraNode.setWorldPosition(newPosition);
+        } else {
+            // 立即跟随
+            this.cameraNode.setWorldPosition(targetPosition);
+        }
+
+        // 让摄像机看向目标
+        this.cameraNode.lookAt(this.target.worldPosition);
+    }
+
+    /**
+     * 停止跟随
+     */
+    public stopFollow(): void {
+        this.target = null;
+        console.log('[CameraController] 停止跟随');
+    }
+
+    /**
+     * 销毁控制器
+     */
+    onDestroy(): void {
+        this.target = null;
+        this.cameraNode = null;
+        this.camera = null;
+        console.log('[CameraController] 摄像机控制器已销毁');
+    }
+}