带有AssetManager的Libgdx FreeTypeFontGenerator

问题描述

我不想加载fnt文件，因为它们在不同的屏幕分辨率上显示不同。所以我现在所做的就是在每个演员或者屏幕上动态生成我的字体。
现在我认为最好在游戏开始时生成一次字体，并将其加载到资产管理器中。但是AssetManager似乎需要一个带有BitmapFont.class参数的文件名。我想要做的是生成5个不同的位图字体，并将这些BitmapFonts加载到assetmanager中，所以我把所有的资源放在一个地方，并且可以重复使用它们。我可以创建这些BitmapFonts，将它们保存在一个列表中，并将列表提供给每个演员或屏幕，就像我管理我的纹理和音频的assetmanager一样。但是，将所有东西放在一个地方，比如资产管理器，会更加优雅。

那么，有没有办法将使用FreeTypeFontGenerator创建的BitmapFonts加载到assetmanager中？

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解决方案

你可以阅读如何提供自己的。

您必须实现。那些会得到一个自由的字体的文件。有了这个，你可以使用生成器来生成你想要的 BitmapFont 。由于您想使用资产管理器，因此您必须像下面这样覆盖位图字体的默认加载器：

  manager.setLoader BitmapFont.class，新的MyFreeTypeFontLoader（新的InternalFileHandleResolver（）））; b 
 
 
 $ /com/badlogic/gdx/assets/AssetLoaderParameters.html>  AssetLoaderParameters  ，您可以向装载程序提供更多信息，例如字体大小。
 
 
 
下面的代码是未经测试，但可能的工作：
 公共类FreeTypeFontLoader延伸SynchronousAssetLoader< ; BitmapFont，FreeTypeFontLoader.FreeTypeFontParameters> {
 
 public FreeTypeFontLoader（FileHandleResolver解析器）{
 super（resolver）; 
} 
 
 @覆盖
公共BitmapFont负载（AssetManager assetManager，字符串文件名，文件句柄文件，FreeTypeFontParameters参数）{
 FreeTypeFontGenerator发生器=新FreeTypeFontGenerator（文件）; 
 
 return generator.generateFont（parameter.fontParameters）; 
} 
 
 static public class FreeTypeFontParameters extends AssetLoaderParameters< BitmapFont> {
 
 public FreeTypeFontParameter fontParameters; 
} 
 
 @Override 
 public Array< AssetDescriptor> getDependencies（String fileName，FileHandle file，FreeTypeFontParameters参数）{
 return null; 
 
 
 $ b $ / code $ / $ p 
 
 
 UPDATE：
 
 
 
这不再是必要的，gdx-freetype扩展现在拥有freetype字体本身的加载器！ 
 
 
 
 
  
 
 
 [FreeTypeFontLoaderTest] 
（）
 
 
 
i'd like to use the asset manager in combination with the FreeTypeFontGenerator.

I dont want to load fnt files cause they display differently on different screenresolutions. So what i do currently is generating my fonts on the fly in every actor or screen.
Now i think its best to generate the fonts once when the game is started and load them into the asset manager. But the AssetManager seems to need a filename with the BitmapFont.class parameter. What i want to do is generate 5 different bitmapfonts and and load those BitmapFonts into the assetmanager, so i have all my ressources in one place, and can reuse them. I could just create those BitmapFonts, save them in a list, and give the list to every actor or screen, just like i do with the assetmanager i manage my textures and audio with. But it would be more elegant to have everything in one place, the asset manager.

So, is there a way to load BitmapFonts created with FreeTypeFontGenerator into the assetmanager?
 解决方案 
Here you can read about how to supply your own AssetLoader.

You would have to implement either a SynchronousAssetLoader or an AsynchronousAssetLoader. Those Would get the file to a free type font. With that you can use the generator to generate your desired BitmapFont. Since you want to use the asset manager, you have to overwrite the default loader for bitmap fonts like this:
manager.setLoader(BitmapFont.class, new MyFreeTypeFontLoader(new InternalFileHandleResolver()));
Via AssetLoaderParameters you could supply further information to your loader, like the font size.
The following code is untested, but might work:
public class FreeTypeFontLoader extends SynchronousAssetLoader<BitmapFont, FreeTypeFontLoader.FreeTypeFontParameters> {

    public FreeTypeFontLoader(FileHandleResolver resolver) {
        super(resolver);
    }

    @Override
    public BitmapFont load(AssetManager assetManager, String fileName, FileHandle file, FreeTypeFontParameters parameter) {
        FreeTypeFontGenerator generator = new FreeTypeFontGenerator(file);

        return generator.generateFont(parameter.fontParameters);
    }

    static public class FreeTypeFontParameters extends AssetLoaderParameters<BitmapFont> {

        public FreeTypeFontParameter fontParameters;
    }

    @Override
    public Array<AssetDescriptor> getDependencies(String fileName, FileHandle file, FreeTypeFontParameters parameter) {
        return null;
    }

}
UPDATE:
This is no longer necessary, the gdx-freetype extension now has loaders for freetype fonts itself!
FreeTypeFontGeneratorLoader (it's the same like the code above)
FreeTypeFontLoader
[FreeTypeFontLoaderTest](https://github.com/libgdx/libgdx/blob/master/tests/gdx-tests/src/com/badlogic/gdx/tests/extensions/FreeTypeFontLoaderTest.java)
                        
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