package {
    import flash.display.Sprite;
    import flash.events.Event;
    import flash.text.TextField;
     
    public class PointHitTest extends Sprite {
        private var ball:Ball;
        private var box:Box;
        private var txt:TextField = new TextField();
         
        public function PointHitTest() {
            init();
        }
         
        private function init():void {
            ball=new Ball;
            addChild(ball);
            ball.x=stage.stageWidth/2;
            ball.y=stage.stageHeight/2;
             
            box = new Box(90,90);
            addChild(box);
            box.x = 100;
            box.y = ball.y;
             
            addEventListener(Event.ENTER_FRAME,EnterFrameHandler);
             
            addChild(txt);
            txt.selectable = false;
        }
         
        private function EnterFrameHandler(event:Event):void {
            if (ball.hitTestPoint(mouseX,mouseY,true) || box.hitTestPoint(mouseX,mouseY)) {
                txt.text = "碰到了!";
            }
            else{
                txt.text = "";
            }
            txt.x = mouseX + 15;
            txt.y = mouseY;
        }
    }
}