as3飞机游戏

我用as2写过了http://blog.youkuaiyun.com/adreamstar/archive/2008/02/25/2119524.aspx。

但今天用as3写还是BUG，等以后能解决了再改把。哎，伤心~！！！

源文件下载： http://download.youkuaiyun.com/source/383534

下面是代码：

package adreamstar{
 import flash.display.Sprite;
 import flash.events.Event;
 import flash.events.KeyboardEvent;
 import flash.ui.Keyboard;
 import flash.utils.getDefinitionByName;
 import flash.display.DisplayObject;
 public class Control extends Sprite {
  private var updir:Boolean;
  private var downdir:Boolean;
  private var leftdir:Boolean;
  private var rightdir:Boolean;
  private var isSend:Boolean;
  private var _speed:uint;
  private var bulletContainer:Sprite;
  private var index:Number=0;
  private var enemyContainer:Sprite;
  private var enemyBulletContainer:Sprite;
  private var isSendEnemyBullet:Boolean=true;
  private var count:Number=0;
  public function Control():void {
   _speed=10;
   var plane:Plane=new Plane();
   plane.x=300;
   plane.y=380;
   addChild(plane).name="planes";
   bulletContainer=new Sprite();
   addChild(bulletContainer);
   enemyContainer=new Sprite();
   addChild(enemyContainer);
   enemyBulletContainer=new Sprite();
   addChild(enemyBulletContainer);
   createEnemy();
   
   
   stage.addEventListener(KeyboardEvent.KEY_DOWN,key_down);
   stage.addEventListener(KeyboardEvent.KEY_UP,key_up);
   addEventListener(Event.ENTER_FRAME,planeEnterFrame);
  }
  private function createEnemy():void{
   for (var i:Number=0; i<4; i++) {
    var enemy:Enemy=new Enemy();
    enemy.x=Math.random()*400+20;
    enemy.y=Math.random()*80+20;
    enemyContainer.addChild(enemy);
    var enemyBullet:Bullet=new Bullet();
       enemyBulletContainer.addChild(enemyBullet);
    enemyBullet.x=enemy.x;
    enemyBullet.y=enemy.y;
   }
  }
  private function key_down(event:KeyboardEvent):void {
   if (event.keyCode==38) {
    updir=true;
   }
   if (event.keyCode==40) {
    downdir=true;
   }
   if (event.keyCode==37) {
    leftdir=true;
   }
   if (event.keyCode==39) {
    rightdir=true;
   }
   if (event.keyCode==32) {
    isSend=true;
    index++;
    var bullet:Bullet=new Bullet();
    bulletContainer.addChild(bullet).name="bullet"+index;
    bullet.x=getChildByName("planes").x;
    bullet.y=getChildByName("planes").y;
   }
  }
  private function key_up(event:KeyboardEvent):void {
   if (event.keyCode==38) {
    updir=false;
   }
   if (event.keyCode==40) {
    downdir=false;
   }
   if (event.keyCode==37) {
    leftdir=false;
   }
   if (event.keyCode==39) {
    rightdir=false;
   }
  }
  public function planeEnterFrame(event:Event):void {
   for(var i:Number=0;i<enemyContainer.numChildren;i++){
    enemyContainer.getChildAt(i).x+=10-Math.random()*20;
    enemyBulletContainer.getChildAt(i).y+=10;
    if(getChildByName("planes").hitTestObject(enemyBulletContainer.getChildAt(i))){
     removeChild(getChildByName("planes"));
     
     
     
    }
        if(enemyBulletContainer.getChildAt(i).y>400){
     enemyBulletContainer.removeChildAt(i);
     if(enemyContainer.getChildAt(i)!=null){
     var enemyBullet:Bullet=new Bullet();
          enemyBulletContainer.addChild(enemyBullet);
       enemyBullet.x=enemyContainer.getChildAt(i).x;
        enemyBullet.y=enemyContainer.getChildAt(i).y;
     }
    }
   }
   if(count==4){
    for(var j:Number=0;j<enemyBulletContainer.numChildren;j++){
     enemyBulletContainer.removeChildAt(j);
     
    }
    createEnemy();
    count=0;
    
   }
   
   if (updir) {
    getChildByName("planes").y-=_speed;
   }
   if (rightdir) {
    getChildByName("planes").x+=_speed;
   }
   if (downdir) {
    getChildByName("planes").y+=_speed;
   }
   if (leftdir) {
    getChildByName("planes").x-=_speed;
   }
   if (isSend) {
    for (var n:Number=0; n<bulletContainer.numChildren; n++) {
     bulletContainer.getChildAt(n).y-=15;
     for (var m:Number=0; m<enemyContainer.numChildren; m++) {
      if (bulletContainer.getChildAt(n).hitTestObject(enemyContainer.getChildAt(m))) {
       bulletContainer.removeChildAt(n);
       enemyContainer.removeChildAt(m);
       
       count++;

      }
     }
    }
   }
  }
 }
}