OreGeneration.java

public class OreGeneration {

    @Mod.EventBusSubscriber(modid = TestMod.MODID, bus = Bus.FORGE)
    public static class ForgeBusSubscriber {
        @SubscribeEvent
        public static void biomeLoading(BiomeLoadingEvent event) {
            switch (event.getCategory()) {
            case NETHER -> OreGeneration.NETHER_ORES
                    .forEach(ore -> event.getGeneration().addFeature(Decoration.UNDERGROUND_ORES, ore));
            case THEEND -> OreGeneration.END_ORES
                    .forEach(ore -> event.getGeneration().addFeature(Decoration.UNDERGROUND_ORES, ore));
            default -> OreGeneration.OVERWORLD_ORES
                    .forEach(ore -> event.getGeneration().addFeature(Decoration.UNDERGROUND_ORES, ore));
            }
        }
    }

    @Mod.EventBusSubscriber(modid = TestMod.MODID, bus = Bus.MOD)
    public static class ModBusSubscriber {
        @SubscribeEvent
        public static void commonSetup(FMLCommonSetupEvent event) {
            event.enqueueWork(OreGeneration::registerOres);
        }
    }

    public static final List<ConfiguredFeature<OreConfiguration, OreFeature>> OVERWORLD_ORES = List.of();
    public static final List<ConfiguredFeature<OreConfiguration, OreFeature>> END_ORES = List.of();
    public static final List<ConfiguredFeature<OreConfiguration, OreFeature>> NETHER_ORES = List.of();

    private static <Config extends FeatureConfiguration> ConfiguredFeature<Config, ?> register(String name,
            ConfiguredFeature<Config, ?> configuredFeature) {
        return Registry.register(BuiltinRegistries.CONFIGURED_FEATURE, new ResourceLocation(TestMod.MODID, name),
                configuredFeature);
    }

    @SuppressWarnings("unchecked")
    public static void registerOres() {
        ConfiguredFeature<?, ?> acacia = Feature.ORE
                .configured(new OreConfiguration(
                        ImmutableList.of(OreConfiguration.target(OreConfiguration.Predicates.STONE_ORE_REPLACEABLES,
                                Blocks.ACACIA_WOOD.defaultBlockState())),
                        11))
                .rangeUniform(VerticalAnchor.bottom(), VerticalAnchor.absolute(50)).squared().count(10).rarity(5);
        register("acacia_ore", acacia);
        OVERWORLD_ORES.add((ConfiguredFeature<OreConfiguration, OreFeature>) acacia);
    }
}