Question

如何在Action Script中禁用键盘键？

我正在制作Flash“记忆”游戏，想法发现2张相同的牌。当发现第二张卡时，显示750毫秒，此时玩家无法执行任何操作。当我使用此mouseChildren = false;播放器时，此时无法用鼠标点击，但他可以使用键盘箭头/输入/空格/制表符按钮...我需要暂时禁用它。

以下是我的代码的一部分：

            {
                    trace("Wrong");
                    _message = "Wrong";
                    message_txt.text = _message;
                     _secondCard = event.currentTarget;


                    var timer:Timer = new Timer(750, 1);
                    timer.addEventListener(TimerEvent.TIMER_COMPLETE, flipBack);
                    timer.start();

                stage.addEventListener(KeyboardEvent.KEY_DOWN, blindKeyboard);//added here
                stage.addEventListener(KeyboardEvent.KEY_UP, blindKeyboard);//added here


                    mouseChildren = false;


                }
            }

function blindKeyboard(e:KeyboardEvent):void{ //added here function
    e.preventDefault();
    e.stopPropagation();
}

            protected function flipBack(event:TimerEvent):void
    {
        _firstCard.gotoAndPlay("flipBack");
        _secondCard.gotoAndPlay("flipBack");
        _firstCard.addEventListener(MouseEvent.CLICK, checkCards);
        _secondCard.addEventListener(MouseEvent.CLICK, checkCards);
        _firstCard = _secondCard = undefined; 
        mouseChildren = true;
    }

Answer 1

尝试

stage.addEventListener(KeyboardEvent.KEY_DOWN, blindKeyboard);
stage.addEventListener(KeyboardEvent.KEY_UP, blindKeyboard);
function blindKeyboard(e:KeyboardEvent):void{
    e.preventDefault();
    e.stopPropagation();
}

Answer 2

您可以使用添加/删除侦听器的功能：

function addListeners():void
{
    // loop through and add the listeners for the cards
    // add keyboard listeners
}

function removeListeners():void
{
   // loop through and remove listeners from the cards
   // remove keyboard listeners
}

在设置计时器之前，您将删除听众：

removeListeners();

然后在您的flipback计时器处理程序中，您只需调用addListeners：

addListeners();

动作脚本。如何禁用键盘？

2 个答案: