I've been trying to implement a custom biome and I've run across an error that crashes my game when trying to create a new world and disallows me to enter any existing worlds.

I followed this tutorial for making biomes (with one or two changes to class names and method names).

My code looks like this

Spoiler

 

public static final ResourceKey<Biome> MAPLE_BIOME = ResourceKey.create(Registry.BIOME_REGISTRY, new ResourceLocation(GooseMod.MODID, "maple_forest"));

private void setup(final FMLCommonSetupEvent event) {
   	event.enqueueWork(() -> {
        ModWorldGeneration.registerConfiguredFeatures();
        BiomeManager.addAdditionalOverworldBiomes(MAPLE_BIOME);
    });
}

@SubscribeEvent(priority = EventPriority.HIGH)
  public static void onBiomeLoad(BiomeLoadingEvent event) {
  ResourceKey<Biome> eventBiomeKey = ResourceKey.create(Registry.BIOME_REGISTRY, event.getName());
  if (eventBiomeKey == MAPLE_BIOME)
  {
    event.getGeneration().getFeatures(GenerationStep.Decoration.VEGETAL_DECORATION).add(() -> ORANGE_MAPLE);
    event.getGeneration().getFeatures(GenerationStep.Decoration.VEGETAL_DECORATION).add(() -> RED_MAPLE);
    event.getGeneration().getFeatures(GenerationStep.Decoration.VEGETAL_DECORATION).add(() -> YELLOW_MAPLE);
  }
}
}

 

and the exception is this

Spoiler

java.lang.IllegalStateException: Missing: ResourceKey[minecraft:worldgen/biome / goosemod:maple_forest]
    at net.minecraft.core.Registry.getOrThrow(Registry.java:476) ~[forge-1.17.1-37.0.104_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading}
    at net.minecraft.world.level.biome.OverworldBiomeSource.lambda$new$5(OverworldBiomeSource.java:36) ~[forge-1.17.1-37.0.104_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading}
    at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197) ~[?:?] {}
    at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197) ~[?:?] {}
    at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1625) ~[?:?] {}
    at java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:735) ~[?:?] {}
    at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) ~[?:?] {}
    at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) ~[?:?] {}
    at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913) ~[?:?] {}
    at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:?] {}
    at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:682) ~[?:?] {}
    at net.minecraft.world.level.biome.BiomeSource.<init>(BiomeSource.java:29) ~[forge-1.17.1-37.0.104_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading}
    at net.minecraft.world.level.biome.OverworldBiomeSource.<init>(OverworldBiomeSource.java:34) ~[forge-1.17.1-37.0.104_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading}
    at net.minecraft.client.gui.screens.worldselection.WorldPreset$1.generator(WorldPreset.java:36) ~[forge-1.17.1-37.0.104_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading}
    at net.minecraft.client.gui.screens.worldselection.WorldPreset.create(WorldPreset.java:166) ~[forge-1.17.1-37.0.104_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.gui.screens.worldselection.CreateWorldScreen.lambda$create$0(CreateWorldScreen.java:120) ~[forge-1.17.1-37.0.104_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:runtimedistcleaner:A}
    at java.util.Optional.map(Optional.java:260) ~[?:?] {}
    at net.minecraft.client.gui.screens.worldselection.CreateWorldScreen.create(CreateWorldScreen.java:120) ~[forge-1.17.1-37.0.104_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.gui.screens.worldselection.SelectWorldScreen.lambda$init$4(SelectWorldScreen.java:58) ~[forge-1.17.1-37.0.104_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.gui.components.Button.onPress(Button.java:29) ~[forge-1.17.1-37.0.104_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.gui.components.AbstractButton.onClick(AbstractButton.java:17) ~[forge-1.17.1-37.0.104_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.gui.components.AbstractWidget.mouseClicked(AbstractWidget.java:111) ~[forge-1.17.1-37.0.104_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.gui.components.events.ContainerEventHandler.mouseClicked(ContainerEventHandler.java:28) ~[forge-1.17.1-37.0.104_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.MouseHandler.lambda$onPress$0(MouseHandler.java:87) ~[forge-1.17.1-37.0.104_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.gui.screens.Screen.wrapScreenError(Screen.java:530) ~[forge-1.17.1-37.0.104_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at net.minecraft.client.MouseHandler.onPress(MouseHandler.java:85) ~[forge-1.17.1-37.0.104_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.MouseHandler.lambda$setup$4(MouseHandler.java:181) ~[forge-1.17.1-37.0.104_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.util.thread.BlockableEventLoop.execute(BlockableEventLoop.java:90) ~[forge-1.17.1-37.0.104_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:accesstransformer:B}
    at net.minecraft.client.MouseHandler.lambda$setup$5(MouseHandler.java:180) ~[forge-1.17.1-37.0.104_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:runtimedistcleaner:A}
    at org.lwjgl.glfw.GLFWMouseButtonCallbackI.callback(GLFWMouseButtonCallbackI.java:36) ~[lwjgl-glfw-3.2.2.jar%2354!:build 10] {}

What exactly am I missing? I understand that the tutorial is for 1.16, but I couldn't find anything for 1.17 and so far it hasn't been that difficult to implement it into my project. Did they add a step in 1.17?

why on earth are you creating a ResourceKey in BiomeLoadingEvent, you should use the Name you get from the Event and the Location of the ResourceKey (you can get it from ResourceKey#location) instead also is your FMLCommonSetupEvent fierd?

9 hours ago, Luis_ST said:

also is your FMLCommonSetupEvent fierd?

My FMLCommonSetupEvent is being fired, I've debugged the method call but nothing seems out of the ordinary.

12 hours ago, Luis_ST said:

why on earth are you creating a ResourceKey in BiomeLoadingEvent, you should use the Name you get from the Event and the Location of the ResourceKey (you can get it from ResourceKey#location) instead

Why?

39 minutes ago, Luis_ST said:

Why?

It's what it said to do here. Again it was the only resource I had on this.

yeah that's correct but you should call ResourceKey#get and not ResourceKey#create

12 hours ago, Luis_ST said:

yeah that's correct but you should call ResourceKey#get and not ResourceKey#create

I can't find any method named get in ResourceKey

sorry my mistake, did not see that the tutorial is for 1.16 and ResourceKey#get in 1.17 has been removed
i would recommend you to use the ResourceLocations instead,
one location you can get from the Event the other from your ResourceKey via ResourceKey#location

On 11/12/2021 at 4:09 PM, Luis_ST said:

sorry my mistake, did not see that the tutorial is for 1.16 and ResourceKey#get in 1.17 has been removed
i would recommend you to use the ResourceLocations instead,
one location you can get from the Event the other from your ResourceKey via ResourceKey#location

I've implemented this, but I am still getting errors when trying to add my custom biome

post updated code

21 hours ago, Luis_ST said:

post updated code

Spoiler

public static final ResourceKey<Biome> MAPLE_BIOME = ResourceKey.create(Registry.BIOME_REGISTRY, new ResourceLocation(GooseMod.MODID, "maple_forest"));

private void setup(final FMLCommonSetupEvent event) {
  event.enqueueWork(() -> {
    BiomeManager.addAdditionalOverworldBiomes(MAPLE_BIOME);
  });
}
  
  @SubscribeEvent(priority = EventPriority.HIGH)
  public static void onBiomeLoad(BiomeLoadingEvent event) {
    if (event.getName().equals(MAPLE_BIOME.location())) {
      event.getGeneration().getFeatures(GenerationStep.Decoration.VEGETAL_DECORATION).add(() -> ORANGE_MAPLE);
      event.getGeneration().getFeatures(GenerationStep.Decoration.VEGETAL_DECORATION).add(() -> RED_MAPLE);
      event.getGeneration().getFeatures(GenerationStep.Decoration.VEGETAL_DECORATION).add(() -> YELLOW_MAPLE);
    }
  }

 

 

post a git repo of your mod

On 11/25/2021 at 1:18 PM, Luis_ST said:

post a git repo of your mod

https://github.com/NotAFlyingGoose/GooseMod

if you add your Biome to the Overworld via BiomeManager#addAdditionalOverworldBiomes,
you need to register your Biome via DeferredRegister or RegistryEvent

unfortunately a json only Biome does not work in this case