【AS3代码】键盘控制影片剪辑上下左右移动!!

最新推荐文章于 2021-03-16 15:28:55 发布

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最新推荐文章于 2021-03-16 15:28:55 发布

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本文介绍了一个使用ActionScript 3.0 (AS3) 编写的简单游戏示例，通过键盘上的方向键来控制游戏角色的移动。示例中详细展示了如何监听键盘事件并根据按键的不同来更新游戏角色的位置。

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package
{
    import flash.display.Sprite;
    import flash.events.Event;
    import flash.events.KeyboardEvent;
    import flash.events.TimerEvent;
    import flash.utils.Timer;
    import flash.utils.getTimer;

    public class Main extends Sprite
    {
        var mascot:Bo = new Bo();
        var leftArrow:Boolean = false;
        var rightArrow:Boolean = false;
        var upArrow:Boolean = false;
        var downArrow:Boolean = false;

        public function Main():void
        {
            init();
        }
        private function init():void
        {
            this.addChild(mascot);
            stage.addEventListener(KeyboardEvent.KEY_DOWN,downs);
            stage.addEventListener(KeyboardEvent.KEY_UP,ups);
            stage.addEventListener(Event.ENTER_FRAME,moves);
        }

        public function downs(e:KeyboardEvent):void
        {
            if(e.keyCode == 37)
            {
                leftArrow = true;
            }
            else if(e.keyCode == 38)
            {
                upArrow = true;
            }
            else if(e.keyCode == 39)
            {
                rightArrow = true;
            }
            else if(e.keyCode == 40)
            {
                downArrow = true;
            }
        }

        public function ups(e:KeyboardEvent):void
        {
            if(e.keyCode == 37)
            {
                leftArrow = false;
            }
            else if(e.keyCode == 38)
            {
                upArrow = false;
            }
            else if(e.keyCode == 39)
            {
                rightArrow = false;
            }
            else if(e.keyCode == 40)
            {
                downArrow = false;
            }
        }

        public function moves(e:Event):void
        {
            var speed:Number = 15;
            if(leftArrow)
            {
                mascot.x -= speed;
            }
            else if(upArrow)
            {
                mascot.y -= speed;
            }
            else if(rightArrow)
            {
                mascot.x += speed;
            }
            else if(downArrow)
            {
                mascot.y += speed;
            }
        }

    }
}