Question

我创造了一个空间道奇＆＃39; AS3中的游戏，一切顺利，然而，我发现它太容易了。＆＃39;小行星＆＃39;只有在最后一个击中边缘后进来。我希望游戏让更多的小行星向你走来，但是当我嵌入另一个图像时，它似乎给我一个错误。代码在这里：

package 
{
    import flash.display.Bitmap;
    import flash.display.Graphics;
    import flash.display.MovieClip;
    import flash.display.Stage;
    import flash.events.Event;
    import flash.events.KeyboardEvent;
    import flash.events.MouseEvent;
    import flash.events.TimerEvent;
    import flash.text.TextField;
    import flash.text.TextFieldAutoSize;
    import flash.text.TextFormat;
    import flash.ui.Keyboard;
    import flash.utils.*;
    import flash.text.TextFormatAlign;

    /**
     * ...
     * @author DogeGames Studios
     */


    public class Main extends MovieClip 
    {
        var text:TextField = new TextField();
        var format:TextFormat = new TextFormat();
        var stext:TextField = new TextField();
        var sform:TextFormat = new TextFormat();
        var score:Number = 0;
        var stageRef:Stage
        public var inair:int = 1;
        [Embed(source = 'img/char.png')]
        var charClass:Class;
        var char:Bitmap = new charClass();
        [Embed(source = 'img/rock.png')]
        var rockClass:Class;
        var rock:Bitmap = new rockClass();
        public function Main():void 
        {

            if (stage) init();
            else addEventListener(Event.ADDED_TO_STAGE, init);
        }

        private var moveTimer:Timer;
        private var hitTimer:Timer;
        private var scoreTimer:Timer;

        private function init(e:Event = null):void 
        {
            removeEventListener(Event.ADDED_TO_STAGE, init);
            // entry point
            addChild(rock);
            addChild(rock);
            addChild(rock);
            scoreTimer = new Timer(1000, 0);
            scoreTimer.addEventListener(TimerEvent.TIMER, addScore);
            scoreTimer.start();
            hitTimer = new Timer(25, 0);
            hitTimer.addEventListener(TimerEvent.TIMER, hitDetect);
            hitTimer.start();
            moveTimer = new Timer(25, 0);
            moveTimer.addEventListener(TimerEvent.TIMER, moveRock);
            moveTimer.start();
            stage.addEventListener(MouseEvent.MOUSE_MOVE, moveShip);
            var watermark:TextField = new TextField();
            watermark.text = "DogeGames.cu.cc";
            var wform:TextFormat = new TextFormat();
            wform.align = TextFormatAlign.RIGHT;
            wform.size = 24;
            wform.font = "Comic Sans MS";
            watermark.setTextFormat(wform);
            text.text = "Space Dodger - By Dogegames Studios ";
            char.x = 50;
            char.y = 482;
            rock.x = 850;
            rock.y = Math.random() * 600;
            format.size = 24;
            format.font = "Comic Sans MS";
            text.setTextFormat(format);
            text.autoSize = TextFieldAutoSize.LEFT;
            sform.font = "Comic Sans MS";
            sform.size = 24;
            sform.align = TextFormatAlign.RIGHT;
            addChild(text);
            addChild(char);
        }

        function moveShip(e:MouseEvent):void {
            if (char.y >= 600) {
                char.y = 500;
            } else {
                char.y = mouseY;
            }
        }

        private var speed:Number = 15;

        function hitDetect(e:TimerEvent):void {
            if (char.getBounds(stage).intersects(rock.getBounds(stage))) {
                text.text = "GAME OVER!";
                text.setTextFormat(format);
                moveTimer.stop();
                hitTimer.stop();
                scoreTimer.stop();
            }
        }

        function addScore(e:TimerEvent):void {
            score++;
            stext.text = "Score: " + score;
            stext.setTextFormat(sform);
            stext.width = 700;
            addChild(stext);
        }

        function moveRock(e:TimerEvent):void {
            rock.x -= speed;
            if (rock.x <= 0) {
                rock.x = 850;
                rock.y = Math.random() * 600;
            }
        }

    }

}

Answer 1

再次添加同一个摇滚乐，你不会得到另一块摇滚乐。它只会移动到显示列表的顶部。此外，您需要跟踪岩石的每个实例，以便稍后可以对它们进行碰撞检测。

而不是var rock：Bitmap = new rockClass（）;使用向量，并在构造函数中初始化它。

var rocks:Vector.<Bitmap>;
public function Main():void 
{
  rocks = new Vector.<Bitmap>();
  rocks.push(new RockClass());
  rocks.push(new RockClass());
  rocks.push(new RockClass());
  if (stage){
    init();
  }else{
    addEventListener(Event.ADDED_TO_STAGE, init);
  }
}

使用循环添加它们，在更改岩石数量时可以正常工作

//inside init()
for(var i:int=0; i< rocks.length; i++){
  addchild(rocks[i]);
}

同样的循环也应该用于碰撞检测。

AS3 - 如何制作多个相同的精灵？

1 个答案: