进度栏加载纹理在AndEngine [英] Progress bar while loading Textures in AndEngine

问题描述

当我开始我的游戏黑屏来了一会儿，因为被加载的资源。
我就彻底的一个教程，显示了如何显示进度条而导致的资源我跟着它，现在我可以看到进度条。但问题是这样的，当进度条是可见的其他每一件事停止。并没有任何反应。只有一个黑色的屏幕并在其上的进度条。任何一个可以告诉我为什么每一件事情被暂停，为什么loadresources和loadscene方法不工作？请提供解决方案。

when I start my game black screen comes for a while because resources are being loaded. I went thorough a tutorial which show how to show progress bar while leading resources I followed it and now I can see progress bar. But the problem is this when progress bar is visible every thing else is stopped. And nothing happens. Only a black screen and a progress bar on it. Can any one tell me why every thing is paused and why loadresources and loadscene methods are not working? Please provide a solution.

推荐答案

从Engine.java：

From Engine.java:

public void onDrawFrame(final GLState pGLState) throws InterruptedException {
        final EngineLock engineLock = this.mEngineLock;

        engineLock.lock();
        try {
            engineLock.waitUntilCanDraw();

            this.mVertexBufferObjectManager.updateVertexBufferObjects(pGLState);
            this.mTextureManager.updateTextures(pGLState);
            this.mFontManager.updateFonts(pGLState);

            this.onUpdateDrawHandlers(pGLState, this.mCamera);
            this.onDrawScene(pGLState, this.mCamera);

            engineLock.notifyCanUpdate();
        } finally {
            engineLock.unlock();
        }
    }

这就是为什么发动机挂起和用户界面卡。这是可能的，而纹理加载到硬件，不结冰，显示加载屏幕，让我们说，一个进度。这并不容易，需要大量的code，但它是可能的，并不需要疯狂的黑客，只是一些逻辑。搜索结果

And that's why the engine hangs and the UI gets stuck. It's possible to display a loading screen while the textures are being loaded into hardware, without freezing, let's say, a ProgressBar. It's not easy and requires a lot of code, but it's possible and doesn't require crazy hacks, just some logic.

您需要有一个资源管理器（RM）和场景管理器（SM）谁一起工作（与 AsyncTasks ），并负责加载纹理当前场景。因为你已经在 BaseGameActivity 您可以使用此活动实例显示全屏对话框通过进度条。其中的逻辑是：

You need to have a Resources Manager (RM) and a Scene Manager (SM) who work together (with AsyncTasks) and are responsible for loading the textures for the current scene. Since you've a BaseGameActivity you can use this Activity instance to show a fullscreen Dialog with the progress bar. The logic is:

1. SM被要求出示的场景


2. SM显示加载对话框


3. SM异步告诉RM到所有的场景资源加载到硬件（每个纹理场景，texture.load）


4. RMonSceneTexturesLoadComplete讲述SM所有纹理加载

1. SM is asked to show Scene A
2. SM shows the loading Dialog
3. SM asynchronously tells the RM to load all Scene A resources into hardware (for each texture for Scene A, texture.load)
4. RM "onSceneTexturesLoadComplete" tells SM that all textures are loaded

由于texture.load不保证纹理实际加载你需要有一个 TryToDismissDialog 扩展的TimerTask 。这 TryToDismissDialog 不时会查询场景纹理和检查，如果他们实际上是加载：结果

Since texture.load doesn't guarantee the texture is actually loaded you'll need to have a TryToDismissDialog that extends TimerTask. This TryToDismissDialog from time to time will query the Scene A textures and check if they are actually loaded:

if (texturePack.getTexture().isLoadedToHardware()) {
        texturesLoaded++;
}

如果所有纹理加载您关闭对话框，瞧你会看到现场准备就绪。结果
希望它可以帮助搜索搜索结果
PS：这实际上涉及到code的一些行，我刚刚在这里发表简单的步骤/引导/伪code。我不会发布最终的解决方案，因为它是相当沉重，项目相关的。

If all textures are loaded you dismiss the Dialog and voilá you'll see the Scene ready.
Hope it helps


ps: this actually involves some lines of code, I've just posted here a quick steps/guide/pseudo-code. I'll not post the final solution because it's quite heavy and "project related".

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