Egret 碰撞检测总结

//两物品重叠的碰撞判断方式
        public static hitTest(obj1:egret.DisplayObject,obj2:egret.DisplayObject):boolean
        {
            var rect1: egret.Rectangle = obj1.getBounds();
            var rect2: egret.Rectangle = obj2.getBounds();
            rect1.x = obj1.x;
            rect1.y = obj1.y;
            rect2.x = obj2.x;
            rect2.y = obj2.y;
            return rect1.intersects(rect2);
        }

let fromX=1;
let fromY=1;
let toX=10;
let toY=10;
let from=new egret.Point(fromX,fromY);
let to=new egret.Point(toX,toY);
let distance=egret.Point.distance(from,to);
if(distance<=width1/2+width2/2){
//todo 撞了
}