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我正在用 Flash 创建游戏,并且正在为游戏创建一个主菜单(带有“播放”、“如何玩”、“历史分数”等按钮),我想知道最好的方法是什么?

我所有的 Actionscript 代码都在外部 .as 文件中,我一直在使用类,但我无法弄清楚如何获取它,以便在游戏运行后立即显示菜单。主要问题是我的游戏中有一些计时器附加了事件处理程序,我试图想出最好的方法来基本上停止这些计时器,直到用户真正点击“播放”,否则对象会在顶部生成菜单和计时器倒计时。

停止计时器,然后将事件处理程序添加到播放按钮以启动计时器是个好主意吗?我试图找出最好的方法来做这个以供将来参考。

感谢您提供任何帮助。

编辑:尝试了 Cherniv 的建议,遇到了一些错误。

主要作为:

package  {
    import flash.display.MovieClip;
    import flash.display.Sprite;
    import flash.display.DisplayObject;
    import flash.events.Event;
    import flash.events.MouseEvent;
    import flash.events.TimerEvent;
    import flash.utils.Timer;
    import flash.ui.Mouse;
    import flash.media.Sound;
    import flash.media.SoundChannel;
    import flash.text.TextFormat;
    import flash.text.TextField;
    import flash.display.Loader;
    import flash.net.URLRequest;
    import flash.net.URLLoader;
    import flash.system.LoaderContext;
    import flash.display.Sprite;
    import flash.net.Socket;


    public class Main extends MovieClip {

    public static var gameLayer:Sprite = new Sprite;
    public static var endGameLayer:Sprite = new Sprite;
    public static var menuLayer:Sprite = new Sprite;

    public var gameTime:int;
    public var levelDuration:int;

    public var crosshair:crosshair_mc;
    static var score:Number;

    var enemyShipTimer:Timer;
    var enemyShipTimerMed:Timer;
    var enemyShipTimerSmall:Timer;

    static var scoreHeader:TextField = new TextField();
    static var scoreText:TextField = new TextField();
    static var timeHeader:TextField = new TextField();
    static var timeText:TextField = new TextField();

    public function Main()
    {
        var mainMenu:myMenu = new myMenu;
        addChild(gameLayer);
        addChild(endGameLayer);
        addChild(menuLayer);

        playBtn.addEventListener(MouseEvent.CLICK, startButtonPressed);
    }

    function startButtonPressed(e:Event)
    {
        levelDuration = 30;
        gameTime = levelDuration;
        var gameTimer:Timer = new Timer(1000,levelDuration);
        gameTimer.addEventListener(TimerEvent.TIMER, updateTime);
        gameTimer.addEventListener(TimerEvent.TIMER_COMPLETE, timeExpired)
        gameTimer.start();

        scoreHeader = new TextField();
        scoreHeader.x = 5;
        scoreHeader.text = String("Score: ");
        gameLayer.addChild(scoreHeader);

        scoreText = new TextField();
        scoreText.x = 75;
        scoreText.y = 0;
        scoreText.text = String(0);
        gameLayer.addChild(scoreText);

        timeHeader = new TextField();
        timeHeader.x = 490;
        timeHeader.y = 0;
        timeHeader.text = String("Time: ");
        gameLayer.addChild(timeHeader);

        timeText = new TextField();
        timeText.x = 550;
        timeText.y = 0;
        timeText.text = gameTime.toString();
        gameLayer.addChild(timeText);

        var scoreFormat = new TextFormat("Arial Rounded MT Bold", 20, 0xFFFFFF);
        scoreHeader.setTextFormat(scoreFormat);
        scoreText.setTextFormat(scoreFormat);
        timeHeader.setTextFormat(scoreFormat);
        timeText.setTextFormat(scoreFormat);

        enemyShipTimer = new Timer(2000);
        enemyShipTimer.addEventListener("timer", sendEnemy);
        enemyShipTimer.start();

        enemyShipTimerMed = new Timer(2500);
        enemyShipTimerMed.addEventListener("timer", sendEnemyMed);
        enemyShipTimerMed.start();

        enemyShipTimerSmall = new Timer(2750);
        enemyShipTimerSmall.addEventListener("timer", sendEnemySmall);
        enemyShipTimerSmall.start();

        crosshair = new crosshair_mc();
        gameLayer.addChild(crosshair);

        crosshair.mouseEnabled = crosshair.mouseChildren = false;

        Mouse.hide();

        gameLayer.addEventListener(Event.ENTER_FRAME, moveCursor);
        resetScore();
    }

    function sendEnemy(e:Event)
    {
        var enemy = new EnemyShip();
        gameLayer.addChild(enemy);
        gameLayer.addChild(crosshair);
    }

    function sendEnemyMed(e:Event)
    {
        var enemymed = new EnemyShipMed();
        gameLayer.addChild(enemymed);
        gameLayer.addChild(crosshair);
    }

    function sendEnemySmall(e:Event)
    {
        var enemysmall = new EnemyShipSmall();
        gameLayer.addChild(enemysmall);
        gameLayer.addChild(crosshair);
    }

    static function updateScore(points)
    {
        score += points;
        scoreText.text = String(score);
        var scoreFormat = new TextFormat("Arial Rounded MT Bold", 20, 0xFFFFFF);
        scoreHeader.setTextFormat(scoreFormat);
        scoreText.setTextFormat(scoreFormat);
    }

    static function resetScore()
    {
        score = 0;
        scoreText.text = String(score);
    }

    function updateTime(e:TimerEvent):void
    {
        trace(gameTime);
        // your class variable tracking each second, 
        gameTime--;
        //update your user interface as needed
        var scoreFormat = new TextFormat("Arial Rounded MT Bold", 20, 0xFFFFFF);
        timeText.defaultTextFormat = scoreFormat;
        timeText.text = String(gameTime);
    }

    function timeExpired(e:TimerEvent):void
    {
        var gameTimer:Timer = e.target as Timer;
        gameTimer.removeEventListener(TimerEvent.TIMER, updateTime)
        gameTimer.removeEventListener(TimerEvent.TIMER, timeExpired)
        // do whatever you need to do for game over
    }

    function moveCursor(event:Event) 
    {
      crosshair.x=mouseX;
      crosshair.y=mouseY;
    }
  }
}

菜单.as:

package  {
    import flash.display.MovieClip;
    import flash.display.Sprite;
    import flash.display.DisplayObject;
    import flash.events.Event;
    import flash.events.MouseEvent;
    import flash.events.TimerEvent;
    import flash.utils.Timer;
    import flash.ui.Mouse;
    import flash.media.Sound;
    import flash.media.SoundChannel;
    import flash.text.TextFormat;
    import flash.text.TextField;
    import flash.display.Loader;
    import flash.net.URLRequest;
    import flash.net.URLLoader;
    import flash.system.LoaderContext;
    import flash.display.Sprite;
    import flash.net.Socket;

    public class Menu extends MovieClip
    {

    var mainMenu:Menu = new Menu();

    Main.menuLayer.addChild(myMenu);

    playBtn.addEventListener(MouseEvent.CLICK, playBtnPressed);

    function playBtnPressed()
    {
        Main.menuLayer.removeChild(myMenu);
        dispatchEvent(new Event("playButtonPressed"))
    }
    }

我的菜单是一个名为movieclip myMenu,并且类设置为,Menu但出现错误,例如:

Main.as, Line 50 1120: Access of undefined property playBtn

在将菜单转换为影片剪辑之前,我为按钮指定了 playBtn 的实例名称,因此不确定那里发生了什么。我可能遗漏了一些非常简单的东西,但是整天打字后我有点困惑。

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1 回答 1

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如果您在 Main 构造函数中有所有初始化内容(包括计时器初始化),那么您需要将其拆分为两个函数,Main 构造函数将显示菜单,“开始”按钮将触发第二个函数,这将包括所有初始化的东西

于 2013-05-08T13:15:56.943 回答