android - 如何使用andengine在android游戏中添加特定区域的场景？

Question

我是游戏开发的新手。我使用and-engine 来开发游戏。我从屏幕顶部使用下面的代码随机创建像物体坠落的场景。

    TimerHandler spriteTimerHandler;
    float mEffectSpawnDelay = 3f;

    spriteTimerHandler = new TimerHandler(mEffectSpawnDelay, true,
    new ITimerCallback() {

        @Override
        public void onTimePassed(TimerHandler pTimerHandler) {
            Random rand = new Random();

            int y = (int) (resourcesManager.camera.getHeight() + resourcesManager.ball2.getHeight());
            int minx = (int) (resourcesManager.ball1.getHeight());
            int maxx = (int) (resourcesManager.camera.getWidth() - resourcesManager.ball2.getWidth());
            int rangex = maxx- minx;
            int x = rand.nextInt(rangex) + minx;

            Sprite target = new Sprite(x, y, resourcesManager.ball2.deepCopy(),vbom);
            attachChild(target);

            int minDuration = 4;
            int maxDuration = 8;
            int rangeDuration = maxDuration - minDuration;
            int actualDuration = rand.nextInt(rangeDuration) + minDuration;

            MoveYModifier mod = new MoveYModifier(actualDuration, target.getY(),-target.getHeight());
            target.registerEntityModifier(mod.deepCopy());

            TargetsToBeAdded.add(target);
        }
    });

    registerUpdateHandler(spriteTimerHandler);

从这段代码中，对象来自屏幕顶部，但它遍布整个宽度。我想将对象从屏幕的一半设置到屏幕的末尾。有人知道请帮我解决这个问题问题。

Answer 1

int minx = (int) (resourcesManager.camera.getWidth() / 2);