const {ccclass, property} = cc._decorator; @ccclass export default class Camera extends cc.Component { canUpY:number = (1600-cc.winSize.height)/2; canDownY:number = -(1600-cc.winSize.height)/2; update(dt:number){ if(!window.gm.isGameOver){ if(window.boy&&window.boy.isValid){ let nextY = window.boy.node.y; if(nextY>this.canDownY&&nextY0){ this.node.y = this.canUpY; } } } } } }