处理多个 TimerEvent

Question

以下是我正在创建的游戏的简化版本。基本上，游戏有一些圈子。每个圆圈发射由 timerEvent 调度的子弹。单击圆圈时，会将其从舞台上移除。然而，子弹仍在继续发射。我不知道如何在单击每个单独的圆圈时停止 timerEvent。

var _timer:Timer = new Timer(1000);
var speed:int = 20;

for(var i:int=0; i<= 3; i++)
{
    var _shape:MovieClip = new MovieClip();
    _shape.graphics.beginFill(0x999999);
    _shape.graphics.lineStyle(1, 0x000000);
    _shape.graphics.drawCircle(0, 0, 20);
    _shape.graphics.endFill();
    addChild(_shape);
    _shape.x = (stage.stageWidth)/5;
    _shape.y = (stage.stageHeight)/3 + _shape.height*i*1.5;
    _shape.name = "_shape"+i;
    _shape.buttonMode = true;

    _shape.addEventListener(MouseEvent.CLICK, removeMovieClip);
    bullets(_shape);
}

function bullets(_shape:MovieClip):void
{
     _timer = new Timer(Math.random()*100);
     _timer.addEventListener(TimerEvent.TIMER, startFiring);
     _timer.start();

     function startFiring(e:TimerEvent):void
     {
         speed ++;
         var _bullet:MovieClip = new MovieClip();
         _bullet.graphics.beginFill(0x999999);
         _bullet.graphics.lineStyle(1, 0x000000);
         _bullet.graphics.drawRect(0, 0, 5,2);
         _bullet.graphics.endFill();
         addChild(_bullet);
         _bullet.x = _shape.x + speed ;
         _bullet.y = _shape.y; 
      }
}

function removeMovieClip(e:MouseEvent):void
{
     removeChild(getChildByName(e.currentTarget.name));
     // how to stop the timerEvent of clicked circle?
}

Answer 1

//var _timer:Timer = new Timer(1000);  //I don't think this is necessary
var speed:int = 20;
for(var i:int=0; i<= 3; i++)
{
    var _shape:MovieClip = new MovieClip();
    _shape.graphics.beginFill(0x999999);
    _shape.graphics.lineStyle(1, 0x000000);
    _shape.graphics.drawCircle(0, 0, 20);
    _shape.graphics.endFill();
    addChild(_shape);
    _shape.x = (stage.stageWidth)/5;
    _shape.y = (stage.stageHeight)/3 + _shape.height*i*1.5;
    _shape.name = "_shape"+i;
    _shape.buttonMode = true;
    bullets(_shape);
}

function bullets(_shape:MovieClip):void
{
     _shape.timer = new Timer(Math.random()*100);
     _shape.timer.addEventListener(TimerEvent.TIMER, startFiring);
     _shape.timer.start();
     _shape.addEventListener(MouseEvent.CLICK, removeMovieClip);
     function startFiring(e:TimerEvent):void
    {
      speed ++;
      var _bullet:MovieClip = new MovieClip();
      _bullet.graphics.beginFill(0x999999);
      _bullet.graphics.lineStyle(1, 0x000000);
      _bullet.graphics.drawRect(0, 0, 5,2);
      _bullet.graphics.endFill();
      addChild(_bullet);
      _bullet.x = _shape.x + speed ;
      _bullet.y = _shape.y; 
    }
    function removeMovieClip(e:MouseEvent):void
    {
         //stop the time and remove its listeners
         e.target.timer.stop(); // you might need to cast this into Timer object
         e.target.timer.removeEventListener(TimerEvent.TIMER, startFiring);
         removeChild((MovieClip)e.target);
         // how to stop the timerEvent of clicked circle?
    }

}