What does processResources do?

[Cydhra]

I am developing a mod within IntelliJ Ultimate and I'm using Kotlin instead of Java. This comes with various problems, because Forge and ForgeGradle are vastly undocumented. To solve one of my problems, I tried to move the resource output into the classes output within the IDE. Forge seems unable to load resources using the ResourceLocation system (again, undocumented), if the resources do not reside alongside the classes in the filesystem. If I try to load a resource using the classloader:
 

SomeClass.class.getResourceAsStream("/assets/<mod.id>/textures/items/someTexture.png")

 

the resource is found, so it is not a problem to find resources in general. Just forge is unable to find them, as long as they are not in the same output folder as the JVM class files.
But when I tried to move the output resources into the compilation output folder like this:

 

sourceSets {
    main {
        output.resourcesDir = output.classesDirs.find { it.getPath().contains("kotlin") }
    }
}

 

then creating the reobfuscated jar file (using the reobf task of forge-gradle) failed: (the assets are found this way, if the client is started within the IDE)

 

Error while building FML annotations cache: duplicate entry: assets/<mod.id>/blockstates/someFile.json
java.util.zip.ZipException: duplicate entry: assets/<mod.id>/blockstates/someFile.json
	at java.util.zip.ZipOutputStream.putNextEntry(ZipOutputStream.java:232)
	at net.minecraftforge.gradle.user.TaskExtractAnnotations.processJar(TaskExtractAnnotations.java:96)
	at net.minecraftforge.gradle.user.TaskExtractAnnotations.doTask(TaskExtractAnnotations.java:69)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	// 133 further calls omitted 

 

However, the build output folders only contained one version of the resource files, so I suspect the gradle processResources task to be responsible. It is, again, undocumented and I have no idea what the task is actually doing (besides expanding some variables within the mcmod.info file, if configured that way. I tried to omit the task configuration and I tried to reconfigure the task to exclude all resources. The result of reobfJar was exactly the same. 

So: What does processResources do, why can't I relocate the resources output of gradle and why do I need to do that (so resources can be found) in the first place?

 

Edited April 30, 2019 by Cydhra

[DavidM]

37 minutes ago, Cydhra said:

I'm using Kotlin instead of Java

Launch the nukes.

 

39 minutes ago, Cydhra said:

Forge seems unable to load resources using the ResourceLocation

Please elaborate. What happened? What is the error message?

It would be helpful if you could post your code with ResourceLocation that caused the problem.

[Cydhra]

22 minutes ago, DavidM said:

Please elaborate. What happened? What is the error message?

It would be helpful if you could post your code with ResourceLocation that caused the problem.

Oh well, that is really easy: You know what happens, when you fail to create a blockstate file when adding a new block? The loader will complain and the block model will fail to display ingame, because your blockstate is missing. That is exactly what happens (only with all the assets, not just one), if I do not copy the resources into the compilation code output.

So I do not really have any code using ResourceLocations, because the default model loading etc is done by forge and already not working.

Here is an excerpt of the error message, if you still need it:

[13:41:47] [Client thread/ERROR] [FML]: Exception loading blockstate for the variant <mod.id>:<some.block>#facing=west: 
java.lang.Exception: Could not load model definition for variant <mod.id>:<some.block>
	at net.minecraftforge.client.model.ModelLoader.getModelBlockDefinition(ModelLoader.java:269) ~[ModelLoader.class:?]
	at net.minecraft.client.renderer.block.model.ModelBakery.loadBlock(ModelBakery.java:121) ~[ModelBakery.class:?]
	at net.minecraftforge.client.model.ModelLoader.loadBlocks(ModelLoader.java:223) ~[ModelLoader.class:?]
	at net.minecraftforge.client.model.ModelLoader.setupModelRegistry(ModelLoader.java:150) ~[ModelLoader.class:?]
	at net.minecraft.client.renderer.block.model.ModelManager.onResourceManagerReload(ModelManager.java:28) [ModelManager.class:?]
	at net.minecraft.client.resources.SimpleReloadableResourceManager.registerReloadListener(SimpleReloadableResourceManager.java:132) [SimpleReloadableResourceManager.class:?]
	at net.minecraft.client.Minecraft.init(Minecraft.java:560) [Minecraft.class:?]
	at net.minecraft.client.Minecraft.run(Minecraft.java:422) [Minecraft.class:?]
	at net.minecraft.client.main.Main.main(Main.java:118) [Main.class:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_191]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_191]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_191]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_191]
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_191]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_191]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_191]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_191]
	at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97) [start/:?]
	at GradleStart.main(GradleStart.java:25) [start/:?]
Caused by: java.lang.RuntimeException: Encountered an exception when loading model definition of model <mod.id>:blockstates/<some.block>.json
	at net.minecraft.client.renderer.block.model.ModelBakery.loadMultipartMBD(ModelBakery.java:228) ~[ModelBakery.class:?]
	at net.minecraft.client.renderer.block.model.ModelBakery.getModelBlockDefinition(ModelBakery.java:208) ~[ModelBakery.class:?]
	at net.minecraftforge.client.model.ModelLoader.getModelBlockDefinition(ModelLoader.java:265) ~[ModelLoader.class:?]
	... 20 more
Caused by: java.io.FileNotFoundException: <mod.id>:blockstates/<some.block>.json
	at net.minecraft.client.resources.SimpleReloadableResourceManager.getAllResources(SimpleReloadableResourceManager.java:87) ~[SimpleReloadableResourceManager.class:?]
	at net.minecraft.client.renderer.block.model.ModelBakery.loadMultipartMBD(ModelBakery.java:221) ~[ModelBakery.class:?]
	at net.minecraft.client.renderer.block.model.ModelBakery.getModelBlockDefinition(ModelBakery.java:208) ~[ModelBakery.class:?]
	at net.minecraftforge.client.model.ModelLoader.getModelBlockDefinition(ModelLoader.java:265) ~[ModelLoader.class:?]
	... 20 more
[13:41:47] [Client thread/FATAL] [FML]: Suppressed additional 130 model loading errors for domain <mod.id>

 

actually I was mixing a few things up: It is not a problem solely with the ResourceLocations. Its a problem with the resource loading system in general, I just used the ResourceLocations to reference this system in general. Sorry for the confusion.

Edited April 30, 2019 by Cydhra
disabled syntax hightlighting

[Cydhra]

The root build.gradle:
https://github.com/Cydhra/Technocracy/blob/master/build.gradle

The module build.gradle

https://github.com/Cydhra/Technocracy/blob/master/foundation/build.gradle

Edited April 30, 2019 by Cydhra