_Aliens/assets/module_aliens/Script/LevelAction.ts

import { _decorator, BoxCollider2D, Button, Camera, CircleCollider2D, Collider2D, Component, EventTouch, find, Input, input, Node, NodeEventType, RenderTexture, v3, Vec3 } from 'cc';

const { ccclass, property } = _decorator;

@ccclass('LevelAction')
export class LevelAction extends Component {

    @property(Camera)
    public camera: Camera = null!;

    private _renderTex: RenderTexture | null = null;
    private _cameraOriginalPos: Vec3 = v3();
    private _touchStartPos: Vec3 = v3();
    private _isDragging = false;
    public targetNode: Node = null!;

    // 添加旋转限制属性
    @property({type: Number})
    public minXRotation: number = -30;  // X轴最小旋转角度(上下)
    @property({type: Number}) 
    public maxXRotation: number = 30;   // X轴最大旋转角度(上下)
    @property({type: Number})
    public minYRotation: number = -55;  // Y轴最小旋转角度(左右)
    @property({type: Number})
    public maxYRotation: number = 55;   // Y轴最大旋转角度(左右)
    private _originalRotation: Vec3 = v3();

    onLoad(): void {
        this._cameraOriginalPos = this.camera.node.position.clone();
        this._originalRotation = this.camera.node.eulerAngles.clone();
        
        // 触摸事件监听
        input.on(Input.EventType.TOUCH_START, this._onTouchStart, this);
        input.on(Input.EventType.TOUCH_MOVE, this._onTouchMove, this);
        input.on(Input.EventType.TOUCH_END, this._onTouchEnd, this);
        input.on(Input.EventType.TOUCH_CANCEL, this._onTouchEnd, this);
    }

    start() {

    }

    /***************************触摸事件**********************************/
    private _onTouchStart(event: EventTouch) {
        const touchPos = event.getLocation();
        this._touchStartPos = v3(touchPos.x, touchPos.y, 0);
        this._isDragging = true;
        this._originalRotation = this.camera.node.eulerAngles.clone();
    }
    
    private _onTouchMove(event: EventTouch) {
        if (!this._isDragging) return;
        
        const currentPos = event.getLocation();
        const deltaX = currentPos.x - this._touchStartPos.x;
        const deltaY = currentPos.y - this._touchStartPos.y;
        
        // 计算新的旋转角度
        const newRotation = this._originalRotation.clone();
        newRotation.y = this._originalRotation.y - deltaX * 0.2;  // 左右滑动控制Y轴旋转
        newRotation.x = this._originalRotation.x + deltaY * 0.2;  // 上下滑动控制X轴旋转
        
        // 添加旋转限制
        newRotation.x = Math.max(this.minXRotation, Math.min(this.maxXRotation, newRotation.x));
        newRotation.y = Math.max(this.minYRotation, Math.min(this.maxYRotation, newRotation.y));
        
        this.camera.node.setRotationFromEuler(newRotation);
    }
    
    private _onTouchEnd() {
        this._isDragging = false;
        // 不再需要重置_cameraOriginalPos，保持当前相机位置
    }

 /***************************触摸事件end**********************************/

    onDestroy () {
        if (this._renderTex) {
            this._renderTex.destroy();
            this._renderTex = null;
        }
    }
}