Flash笔记之hitTestObject使用

package{import flash.display.Sprite;import flash.events.Event;import flash.events.MouseEvent;public class Circle extends Sprite{private var cir:Sprite;private var drwRe:Sprite;public function Circle(){cir = new Sprite();cir.graphics.beginFill(0x558899);cir.graphics.drawCircle(10,10,10);cir.graphics.endFill();this.addChild(cir);stage.addEventListener(MouseEvent.MOUSE_MOVE, onMouseMoving);stage.addEventListener(Event.ENTER_FRAME, gameLoop);}private function createRe():void{drwRe = new Sprite();drwRe.graphics.beginFill(0xFF0000);drwRe.graphics.drawCircle(50,10,30);drwRe.graphics.endFill();this.addChild(drwRe);}private function removeRe():void{this.removeChild(drwRe);drwRe=null;}private function gameLoop(event:Event):void{if(drwRe!=null){if(drwRe.y>150){removeRe();return;}drwRe.y+=4;trace(drwRe.hitTestObject(cir));this.setChildIndex(drwRe,this.numChildren-1);}else{createRe();}}private function onMouseMoving(event:MouseEvent):void{cir.x = mouseX-10;cir.y = mouseY-10;// 鼠标碰到位图啦//if(myBitmpData.hitTest(new Point(myBitmapData.x, myBitmapData.y), 255, new Point(mouseX, mouseY))) { //}if(drwRe!=null){if(cir.hitTestObject(drwRe)){this.setChildIndex(cir,this.numChildren-1);trace("tr");}}}}}