[]碰撞检测，intersects方法造成sprite消失

    //碰撞检测

        for(var i:number=0;i<this.roleBox.numChildren;i++){

            let role:Laya.Animation=this.roleBox.getChildAt(i) as Laya.Animation

            // 只要去掉下面这行代码就不会消失

            let isIntersect:boolean=this.home.player.getBounds().intersects(role.getBounds())

        }