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Executable jar with libgdx: asset not found

I created a small game using libgdx libraries and exported it to an executable jar. In Eclipse, the game runs fine but crashes:

PS E:\Workspaces\JavaGames\Executable Jars> java -jar Pk2.jar
SetToNewScreen called
Exception in thread "LWJGL Application" com.badlogic.gdx.utils.GdxRuntimeException: Couldn't load file: img/player/player_16_down.png
    at com.badlogic.gdx.graphics.Pixmap.<init>(Pixmap.java:140)
    at com.badlogic.gdx.graphics.glutils.FileTextureData.prepare(FileTextureData.java:64)
    at com.badlogic.gdx.graphics.Texture.load(Texture.java:130)
    at com.badlogic.gdx.graphics.Texture.<init>(Texture.java:121)
    at com.badlogic.gdx.graphics.Texture.<init>(Texture.java:100)
    at com.badlogic.gdx.graphics.Texture.<init>(Texture.java:92)
    at org.hofrob.entities.Player.<init>(Player.java:29)
    at org.hofrob.screens.misc.Play.show(Play.java:121)
    at com.badlogic.gdx.Game.setScreen(Game.java:61)
    at org.hofrob.screens.Screenmanager.setToNewScreen(Screenmanager.java:63)
    at org.hofrob.pkgame.MyPkGame.create(MyPkGame.java:20)
    at com.badlogic.gdx.backends.lwjgl.LwjglApplication.mainLoop(LwjglApplication.java:136)
    at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:114)
Caused by: com.badlogic.gdx.utils.GdxRuntimeException: File not found: img\player\player_16_down.png (Internal)
    at com.badlogic.gdx.files.FileHandle.read(FileHandle.java:136)
    at com.badlogic.gdx.files.FileHandle.readBytes(FileHandle.java:220)
    at com.badlogic.gdx.graphics.Pixmap.<init>(Pixmap.java:137)
    ... 12 more

Problem line:

private final Sprite player_down =
    new Sprite(new Texture("img/player/player_16_down.png"));

I created a libgdx wiki to create a jar. The assets folder is included in the build path, and the content of the assets folder is in the exported jar:

  • / Com
  • / IMG
  • / javazoom
  • / META_INF
  • /net
  • / org tile
  • ...

I also tried using Gdx.files.internal

(also by removing final )

private final Sprite player_down = new Sprite(new Texture(Gdx.files.internal("img/player/player_16_down.png")));

but there was no difference.

I can export a base project that exists when a new gradle project is imported into eclipse as a jar executable (no jar execution errors).

Similar questions I found were related to the assets folder not being included in the jar, which doesn't seem to be the issue.

Any ideas?

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3 answers


Just put all the contents of your data folder in the same directory as the jar.



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I loaded the assets a little differently, my jar executable is working fine. Here's my Assets class:

public abstract class Assets {
private static AssetManager asm = new AssetManager();
private static String assetsPackPath = "assets.pack";
public static TextureAtlas atlas;

public static void load(){
    asm.load(assetsPackPath, TextureAtlas.class);
    asm.finishLoading();

    atlas = asm.get(assetsPackPath);
}

public static void dispose(){
    asm.dispose();
}
}


If you are not using a texture packer then you need to! If you are interested in checking HERE

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I had the same problem as you. I also used Eclipse to generate jar files, and no matter what I did, the files were not found when I ran the jar file.

Solution :

  • First go to your project directory on the command line.

  • Run the command gradlew desktop:dist

    .

  • The generated jar file can be found in desktop/build/libs

    .

Note. ... Another problem I found out about is that when you run your project in Eclipse, it does not respect file registration. This means that in Eclipse the project is being loaded into a file img.png

in code, but in fact img.png

, you won't get an error. However, when you run the jar file, you will get an error.

I hope this answer helped you, and if you have any further questions, feel free to leave comments below!

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