flash as3 打气球小游戏代码

package {
 import flash.display.*;
 import flash.events.*;
 import flash.text.*;
 import flash.utils.Timer;
 import flash.geom.Matrix;
 [SWF(width=800, height=465,backgroundColor=0xffffff, frameRate=24)]
 public class main extends Sprite {
  private var pointNum:Number=0;
  private var pTxt:TextField = addChild(new TextField()) as TextField;
  private var matrix:Matrix = new Matrix();
  public function main(){
   var t:Timer = new Timer(500);
   var tFun=function(){matrix.createGradientBox(800,465,Math.PI/2,0,0),graphics.beginGradientFill(GradientType.LINEAR,[0x00CCFF,0xFFFFFF],[0.3,1],[0,255],matrix),graphics.drawRect(0,0,800,465),t.addEventListener(TimerEvent.TIMER,function(e){var mc;
   var mcFun = function(){mc=addChild(new balloon(Math.random()*10 + 1)),mc.x=Math.round(Math.random()*(700-30))+30,mc.y=465}.apply();
   mc.addEventListener(MouseEvent.MOUSE_DOWN, function(e){removeChild(e.target.parent),pTxt.htmlText='Score:'+(++pointNum).toString()+''});}),t.start()}.apply();
  }
 }
}
 import flash.display.Sprite;
 import flash.events.Event;
 class balloon extends Sprite{
  private var speed:Number;
  private var s:Sprite =addChild(new Sprite()) as Sprite;
  public function balloon(_t){
   var sFun=function(){s.graphics.lineStyle(1, 0),s.graphics.curveTo(-10, 30, 0, 60),s.graphics.beginFill(Math.random() * 0xffffff + 0xff000000),s.graphics.drawCircle(0,0,20),speed=Math.round(_t)}.apply();
   s.addEventListener(Event.ENTER_FRAME,function(e){s.y-= speed;});
   }
}