先创建一个自旋转的小球

class Ball extends Laya.Sprite{    private static cached:boolean = false;    private body:Laya.Sprite;    constructor(){        super();        this.init();    }    public init():void{        if(!Ball.cached){            Ball.cached = true;            this.body = new Laya.Sprite();            this.body.loadImage("war/ball.png");            this.body.pivot(12,12);        }        this.addChild(this.body);        Laya.timer.frameLoop(1,this,this.animate);        }    private animate(e):void{		this.body.rotation += 10; 	}}

然后控制小球横向移动,X坐标超过900时 复位!

class Main{    private ball:Ball;    constructor()    {			Laya.init(1100, 619, Laya.WebGL);            Laya.loader.load("res/atlas/war.atlas",Laya.Handler.create(this,this.onLoaded),null,Laya.Loader.ATLAS);    }    private onLoaded():void{            this.ball = new Ball();            Laya.stage.addChild(this.ball);		    this.ball.x = Laya.stage.width / 2;		    this.ball.y = Laya.stage.height / 2;                        Laya.timer.frameLoop(1,this,this.onEnterFrame);    }    private onEnterFrame():void{        this.ball.x+=3;        if(this.ball.x>900){            this.ball.x = Laya.stage.width / 2;        }    }}new Main();