键盘组合键

//保存按键的对象（联合数组）

var key_obj:Object = new Object  ;

function onKeyDownHandler(_evt:KeyboardEvent):void

{

    //记录当前被按下的键，用键控码也行

    key_obj[String.fromCharCode(_evt.keyCode)] = true;

}

function onKeyUpHandler(_evt:KeyboardEvent):void

{

    //键弹起，从对象中删除当前键

    key_obj[String.fromCharCode(_evt.keyCode)] = null;

}

stage.addEventListener("keyUp",onKeyUpHandler);

stage.addEventListener("keyDown",onKeyDownHandler);

function moveCir(_evt:Event):void

{

    var _sprite:Sprite = _evt.target as Sprite;

    //根据对象中记录的键被按下的情况，运行

    if (key_obj["K"])

    {

        trace("K发子弹");

    }

    if (key_obj["S"])

    {

        trace("S被按下");

    }

}

addEventListener("enterFrame",moveCir);