An attempt at 1.19.4 Support

I tried.
2026-02-16 10:30:42 +00:00 · 2023-04-09 21:08:38 -07:00
parent 358e09d05b
commit f918f1ef66
11 changed files with 604 additions and 0 deletions
--- a/platforms/bukkit/nms/build.gradle.kts
+++ b/platforms/bukkit/nms/build.gradle.kts
@@ -0,0 +1,17 @@
+apply(plugin = "io.papermc.paperweight.userdev")
+
+repositories {
+    maven("https://s01.oss.sonatype.org/content/repositories/snapshots/")
+}
+
+dependencies {
+    api(project(":platforms:bukkit:common"))
+    paperDevBundle("1.19.4-R0.1-SNAPSHOT")
+    implementation("xyz.jpenilla", "reflection-remapper", "0.1.0-SNAPSHOT")
+}
+
+tasks {
+    assemble {
+        dependsOn("reobfJar")
+    }
+}
--- a/platforms/bukkit/nms/src/main/java/com/dfsek/terra/bukkit/nms/v1_19_R3/AwfulBukkitHacks.java
+++ b/platforms/bukkit/nms/src/main/java/com/dfsek/terra/bukkit/nms/v1_19_R3/AwfulBukkitHacks.java
@@ -0,0 +1,100 @@
+package com.dfsek.terra.bukkit.nms.v1_19_R3;
+
+import com.google.common.collect.ImmutableMap;
+import com.mojang.serialization.Lifecycle;
+import net.minecraft.core.Holder;
+import net.minecraft.core.Holder.Reference;
+import net.minecraft.core.MappedRegistry;
+import net.minecraft.core.WritableRegistry;
+import net.minecraft.core.registries.Registries;
+import net.minecraft.resources.ResourceKey;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.tags.TagKey;
+import net.minecraft.world.level.biome.Biome;
+import org.bukkit.NamespacedKey;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+
+import com.dfsek.terra.bukkit.world.BukkitPlatformBiome;
+import com.dfsek.terra.registry.master.ConfigRegistry;
+
+
+public class AwfulBukkitHacks {
+    private static final Logger LOGGER = LoggerFactory.getLogger(AwfulBukkitHacks.class);
+    
+    private static final Map<ResourceLocation, List<ResourceLocation>> terraBiomeMap = new HashMap<>();
+    
+    public static void registerBiomes(ConfigRegistry configRegistry) {
+        try {
+            LOGGER.info("Hacking biome registry...");
+            WritableRegistry<Biome> biomeRegistry = (WritableRegistry<Biome>) RegistryFetcher.biomeRegistry();
+            
+            Reflection.MAPPED_REGISTRY.setFrozen((MappedRegistry<?>) biomeRegistry, false);
+            
+            configRegistry.forEach(pack -> pack.getRegistry(com.dfsek.terra.api.world.biome.Biome.class).forEach((key, biome) -> {
+                try {
+                    BukkitPlatformBiome platformBiome = (BukkitPlatformBiome) biome.getPlatformBiome();
+                    NamespacedKey vanillaBukkitKey = platformBiome.getHandle().getKey();
+                    ResourceLocation vanillaMinecraftKey = new ResourceLocation(vanillaBukkitKey.getNamespace(), vanillaBukkitKey.getKey());
+                    Biome platform = NMSBiomeInjector.createBiome(biome, Objects.requireNonNull(biomeRegistry.get(vanillaMinecraftKey)));
+                    
+                    ResourceKey<Biome> delegateKey = ResourceKey.create(
+                            Registries.BIOME,
+                            new ResourceLocation("terra", NMSBiomeInjector.createBiomeID(pack, key))
+                                                                       );
+                    
+                    Reference<Biome> holder = biomeRegistry.register(delegateKey, platform, Lifecycle.stable());
+                    Reflection.REFERENCE.invokeBindValue(holder, platform); // IMPORTANT: bind holder.
+                    
+                    platformBiome.getContext().put(new NMSBiomeInfo(delegateKey));
+                    
+                    terraBiomeMap.computeIfAbsent(vanillaMinecraftKey, i -> new ArrayList<>()).add(delegateKey.location());
+                    
+                    LOGGER.debug("Registered biome: " + delegateKey);
+                } catch(NoSuchFieldException | SecurityException | IllegalArgumentException | IllegalAccessException e) {
+                    throw new RuntimeException(e);
+                }
+            }));
+            
+            Reflection.MAPPED_REGISTRY.setFrozen((MappedRegistry<?>) biomeRegistry, true); // freeze registry again :)
+            
+            LOGGER.info("Doing tag garbage....");
+            Map<TagKey<Biome>, List<Holder<Biome>>> collect = biomeRegistry
+                    .getTags() // streamKeysAndEntries
+                    .collect(HashMap::new,
+                             (map, pair) ->
+                                     map.put(pair.getFirst(), new ArrayList<>(pair.getSecond().stream().toList())),
+                             HashMap::putAll);
+            
+            terraBiomeMap
+                    .forEach((vb, terraBiomes) ->
+                                     NMSBiomeInjector.getEntry(biomeRegistry, vb).ifPresentOrElse(
+                                             vanilla -> terraBiomes.forEach(
+                                                     tb -> NMSBiomeInjector.getEntry(biomeRegistry, tb).ifPresentOrElse(
+                                                             terra -> {
+                                                                 LOGGER.debug("{} (vanilla for {}): {}",
+                                                                              vanilla.unwrapKey().orElseThrow().location(),
+                                                                              terra.unwrapKey().orElseThrow().location(),
+                                                                              vanilla.tags().toList());
+                                                                 vanilla.tags()
+                                                                        .forEach(tag -> collect
+                                                                                .computeIfAbsent(tag, t -> new ArrayList<>())
+                                                                                .add(terra));
+                                                             },
+                                                             () -> LOGGER.error("No such biome: {}", tb))),
+                                             () -> LOGGER.error("No vanilla biome: {}", vb)));
+            
+            biomeRegistry.resetTags();
+            biomeRegistry.bindTags(ImmutableMap.copyOf(collect));
+            
+        } catch(SecurityException | IllegalArgumentException exception) {
+            throw new RuntimeException(exception);
+        }
+    }
+}
--- a/platforms/bukkit/nms/src/main/java/com/dfsek/terra/bukkit/nms/v1_19_R3/NMSBiomeInfo.java
+++ b/platforms/bukkit/nms/src/main/java/com/dfsek/terra/bukkit/nms/v1_19_R3/NMSBiomeInfo.java
@@ -0,0 +1,10 @@
+package com.dfsek.terra.bukkit.nms.v1_19_R3;
+
+import net.minecraft.resources.ResourceKey;
+import net.minecraft.world.level.biome.Biome;
+
+import com.dfsek.terra.api.properties.Properties;
+
+
+public record NMSBiomeInfo(ResourceKey<Biome> biomeKey) implements Properties {
+}
--- a/platforms/bukkit/nms/src/main/java/com/dfsek/terra/bukkit/nms/v1_19_R3/NMSBiomeInjector.java
+++ b/platforms/bukkit/nms/src/main/java/com/dfsek/terra/bukkit/nms/v1_19_R3/NMSBiomeInjector.java
@@ -0,0 +1,81 @@
+package com.dfsek.terra.bukkit.nms.v1_19_R3;
+
+import net.minecraft.core.Holder;
+import java.util.stream.Stream;
+import net.minecraft.core.Registry;
+import net.minecraft.resources.ResourceKey;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.world.level.biome.Biome;
+import net.minecraft.world.level.biome.BiomeSpecialEffects;
+
+import java.util.Locale;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.function.Function;
+
+import com.dfsek.terra.api.config.ConfigPack;
+import com.dfsek.terra.bukkit.config.VanillaBiomeProperties;
+
+import static net.minecraft.world.level.biome.Biome.Precipitation;
+
+public class NMSBiomeInjector {
+
+    public static <T> Optional<Holder<T>> getEntry(Registry<T> registry, ResourceLocation identifier) {
+        return registry.getOptional(identifier)
+                       .flatMap(registry::getResourceKey)
+                       .flatMap(registry::getHolder);
+    }
+
+    public static Biome createBiome(com.dfsek.terra.api.world.biome.Biome biome, Biome vanilla)
+    throws NoSuchFieldException, SecurityException, IllegalArgumentException, IllegalAccessException {
+        Biome.BiomeBuilder builder = new Biome.BiomeBuilder();
+
+        builder
+                .temperature(vanilla.getBaseTemperature())
+                .mobSpawnSettings(vanilla.getMobSettings())
+                .generationSettings(vanilla.getGenerationSettings());
+
+
+        BiomeSpecialEffects.Builder effects = new BiomeSpecialEffects.Builder();
+
+        effects.grassColorModifier(vanilla.getSpecialEffects().getGrassColorModifier());
+
+        VanillaBiomeProperties vanillaBiomeProperties = biome.getContext().get(VanillaBiomeProperties.class);
+
+        effects.fogColor(Objects.requireNonNullElse(vanillaBiomeProperties.getFogColor(), vanilla.getFogColor()))
+
+               .waterColor(Objects.requireNonNullElse(vanillaBiomeProperties.getWaterColor(), vanilla.getWaterColor()))
+
+               .waterFogColor(Objects.requireNonNullElse(vanillaBiomeProperties.getWaterFogColor(), vanilla.getWaterFogColor()))
+
+               .skyColor(Objects.requireNonNullElse(vanillaBiomeProperties.getSkyColor(), vanilla.getSkyColor()));
+
+        if(vanillaBiomeProperties.getFoliageColor() == null) {
+            vanilla.getSpecialEffects().getFoliageColorOverride().ifPresent(effects::foliageColorOverride);
+        } else {
+            effects.foliageColorOverride(vanillaBiomeProperties.getFoliageColor());
+        }
+
+        if(vanillaBiomeProperties.getGrassColor() == null) {
+            vanilla.getSpecialEffects().getGrassColorOverride().ifPresent(effects::grassColorOverride);
+        } else {
+            // grass
+            effects.grassColorOverride(vanillaBiomeProperties.getGrassColor());
+        }
+
+        vanilla.getAmbientLoop().ifPresent(effects::ambientLoopSound);
+        vanilla.getAmbientAdditions().ifPresent(effects::ambientAdditionsSound);
+        vanilla.getAmbientMood().ifPresent(effects::ambientMoodSound);
+        vanilla.getBackgroundMusic().ifPresent(effects::backgroundMusic);
+        vanilla.getAmbientParticle().ifPresent(effects::ambientParticle);
+
+        builder.specialEffects(effects.build());
+
+        return builder.build();
+    }
+
+    public static String createBiomeID(ConfigPack pack, com.dfsek.terra.api.registry.key.RegistryKey biomeID) {
+        return pack.getID()
+                   .toLowerCase() + "/" + biomeID.getNamespace().toLowerCase(Locale.ROOT) + "/" + biomeID.getID().toLowerCase(Locale.ROOT);
+    }
+}
--- a/platforms/bukkit/nms/src/main/java/com/dfsek/terra/bukkit/nms/v1_19_R3/NMSBiomeProvider.java
+++ b/platforms/bukkit/nms/src/main/java/com/dfsek/terra/bukkit/nms/v1_19_R3/NMSBiomeProvider.java
@@ -0,0 +1,47 @@
+package com.dfsek.terra.bukkit.nms.v1_19_R3;
+
+import com.mojang.serialization.Codec;
+import net.minecraft.core.Holder;
+import java.util.stream.Stream;
+import net.minecraft.core.Registry;
+import net.minecraft.world.level.biome.Biome;
+import net.minecraft.world.level.biome.BiomeSource;
+import net.minecraft.world.level.biome.Climate.Sampler;
+import org.jetbrains.annotations.NotNull;
+
+import com.dfsek.terra.api.world.biome.generation.BiomeProvider;
+import com.dfsek.terra.bukkit.world.BukkitPlatformBiome;
+
+
+public class NMSBiomeProvider extends BiomeSource {
+    private final BiomeProvider delegate;
+    private final long seed;
+    private final Registry<Biome> biomeRegistry = RegistryFetcher.biomeRegistry();
+
+    public NMSBiomeProvider(BiomeProvider delegate, long seed) {
+        super();
+        this.delegate = delegate;
+        this.seed = seed;
+    }
+    @Override
+    protected Stream<Holder<Biome>> collectPossibleBiomes() {
+      return delegate.stream()
+                    .map(biome -> RegistryFetcher.biomeRegistry()
+                                                 .getHolderOrThrow(((BukkitPlatformBiome) biome.getPlatformBiome()).getContext()
+                                                                                                              .get(NMSBiomeInfo.class)
+                                                                                                              .biomeKey()));
+    }
+
+    @Override
+    protected @NotNull Codec<? extends BiomeSource> codec() {
+        return BiomeSource.CODEC;
+    }
+
+    @Override
+    public @NotNull Holder<Biome> getNoiseBiome(int x, int y, int z, @NotNull Sampler sampler) {
+        return biomeRegistry.getHolderOrThrow(((BukkitPlatformBiome) delegate.getBiome(x << 2, y << 2, z << 2, seed)
+                                                                             .getPlatformBiome()).getContext()
+                                                                                                 .get(NMSBiomeInfo.class)
+                                                                                                 .biomeKey());
+    }
+}
--- a/platforms/bukkit/nms/src/main/java/com/dfsek/terra/bukkit/nms/v1_19_R3/NMSChunkGeneratorDelegate.java
+++ b/platforms/bukkit/nms/src/main/java/com/dfsek/terra/bukkit/nms/v1_19_R3/NMSChunkGeneratorDelegate.java
@@ -0,0 +1,173 @@
+package com.dfsek.terra.bukkit.nms.v1_19_R3;
+
+import com.mojang.serialization.Codec;
+import net.minecraft.core.BlockPos;
+import net.minecraft.server.level.WorldGenRegion;
+import net.minecraft.world.level.LevelAccessor;
+import net.minecraft.world.level.LevelHeightAccessor;
+import net.minecraft.world.level.NoiseColumn;
+import net.minecraft.world.level.StructureManager;
+import net.minecraft.world.level.WorldGenLevel;
+import net.minecraft.world.level.biome.BiomeManager;
+import net.minecraft.world.level.block.Blocks;
+import net.minecraft.world.level.chunk.ChunkAccess;
+import net.minecraft.world.level.chunk.ChunkGenerator;
+import net.minecraft.world.level.levelgen.Beardifier;
+import net.minecraft.world.level.levelgen.DensityFunction.SinglePointContext;
+import net.minecraft.world.level.levelgen.GenerationStep.Carving;
+import net.minecraft.world.level.levelgen.Heightmap.Types;
+import net.minecraft.world.level.levelgen.RandomState;
+import net.minecraft.world.level.levelgen.blending.Blender;
+import org.bukkit.craftbukkit.v1_19_R3.block.data.CraftBlockData;
+import org.jetbrains.annotations.NotNull;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.List;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.Executor;
+
+import com.dfsek.terra.api.config.ConfigPack;
+import com.dfsek.terra.api.world.biome.generation.BiomeProvider;
+import com.dfsek.terra.api.world.info.WorldProperties;
+import com.dfsek.terra.bukkit.config.PreLoadCompatibilityOptions;
+import com.dfsek.terra.bukkit.world.BukkitWorldProperties;
+import com.dfsek.terra.bukkit.world.block.data.BukkitBlockState;
+
+
+public class NMSChunkGeneratorDelegate extends ChunkGenerator {
+    private static final Logger LOGGER = LoggerFactory.getLogger(NMSChunkGeneratorDelegate.class);
+    private final com.dfsek.terra.api.world.chunk.generation.ChunkGenerator delegate;
+    
+    private final ChunkGenerator vanilla;
+    private final ConfigPack pack;
+    
+    private final long seed;
+    
+    public NMSChunkGeneratorDelegate(ChunkGenerator vanilla, ConfigPack pack, NMSBiomeProvider biomeProvider, long seed) {
+        super(biomeProvider);
+        this.delegate = pack.getGeneratorProvider().newInstance(pack);
+        this.vanilla = vanilla;
+        this.pack = pack;
+        this.seed = seed;
+    }
+    
+    @Override
+    protected @NotNull Codec<? extends ChunkGenerator> codec() {
+        return ChunkGenerator.CODEC;
+    }
+    
+    @Override
+    public void applyCarvers(@NotNull WorldGenRegion chunkRegion, long seed, @NotNull RandomState noiseConfig, @NotNull BiomeManager world,
+                             @NotNull StructureManager structureAccessor, @NotNull ChunkAccess chunk, @NotNull Carving carverStep) {
+        // no-op
+    }
+    
+    @Override
+    public void buildSurface(@NotNull WorldGenRegion region, @NotNull StructureManager structures, @NotNull RandomState noiseConfig,
+                             @NotNull ChunkAccess chunk) {
+        // no-op
+    }
+    
+    @Override
+    public void applyBiomeDecoration(@NotNull WorldGenLevel world, @NotNull ChunkAccess chunk,
+                                     @NotNull StructureManager structureAccessor) {
+        vanilla.applyBiomeDecoration(world, chunk, structureAccessor);
+    }
+    
+    @Override
+    public void spawnOriginalMobs(@NotNull WorldGenRegion region) {
+        vanilla.spawnOriginalMobs(region);
+    }
+    
+    @Override
+    public int getGenDepth() {
+        return vanilla.getGenDepth();
+    }
+    
+    @Override
+    public @NotNull CompletableFuture<ChunkAccess> fillFromNoise(@NotNull Executor executor, @NotNull Blender blender,
+                                                                 @NotNull RandomState noiseConfig,
+                                                                 @NotNull StructureManager structureAccessor, @NotNull ChunkAccess chunk) {
+        return vanilla.fillFromNoise(executor, blender, noiseConfig, structureAccessor, chunk)
+                .thenApply(c -> {
+                    LevelAccessor level = Reflection.STRUCTURE_MANAGER.getLevel(structureAccessor);
+                    BiomeProvider biomeProvider = pack.getBiomeProvider();
+                    PreLoadCompatibilityOptions compatibilityOptions = pack.getContext().get(PreLoadCompatibilityOptions.class);
+                    if(compatibilityOptions.isBeard()) {
+                        beard(structureAccessor, chunk, new BukkitWorldProperties(level.getMinecraftWorld().getWorld()), biomeProvider, compatibilityOptions);
+                    }
+                    return c;
+                });
+    }
+    
+    private void beard(StructureManager structureAccessor, ChunkAccess chunk, WorldProperties world, BiomeProvider biomeProvider,
+                       PreLoadCompatibilityOptions compatibilityOptions) {
+        Beardifier structureWeightSampler = Beardifier.forStructuresInChunk(structureAccessor, chunk.getPos());
+        double threshold = compatibilityOptions.getBeardThreshold();
+        double airThreshold = compatibilityOptions.getAirThreshold();
+        int xi = chunk.getPos().x << 4;
+        int zi = chunk.getPos().z << 4;
+        for(int x = 0; x < 16; x++) {
+            for(int z = 0; z < 16; z++) {
+                int depth = 0;
+                for(int y = world.getMaxHeight(); y >= world.getMinHeight(); y--) {
+                    double noise = structureWeightSampler.compute(new SinglePointContext(x + xi, y, z + zi));
+                    if(noise > threshold) {
+                        chunk.setBlockState(new BlockPos(x, y, z), ((CraftBlockData) ((BukkitBlockState) delegate
+                                .getPalette(x + xi, y, z + zi, world, biomeProvider)
+                                .get(depth, x + xi, y, z + zi, world.getSeed())).getHandle()).getState(), false);
+                        depth++;
+                    } else if(noise < airThreshold) {
+                        chunk.setBlockState(new BlockPos(x, y, z), Blocks.AIR.defaultBlockState(), false);
+                    } else {
+                        depth = 0;
+                    }
+                }
+            }
+        }
+    }
+    
+    @Override
+    public int getSeaLevel() {
+        return vanilla.getSeaLevel();
+    }
+    
+    @Override
+    public int getMinY() {
+        return vanilla.getMinY();
+    }
+    
+    @Override
+    public int getBaseHeight(int x, int z, @NotNull Types heightmap, @NotNull LevelHeightAccessor world, @NotNull RandomState noiseConfig) {
+        WorldProperties properties = new NMSWorldProperties(seed, world);
+        int y = properties.getMaxHeight();
+        BiomeProvider biomeProvider = pack.getBiomeProvider();
+        while(y >= getMinY() && !heightmap.isOpaque().test(
+                ((CraftBlockData) delegate.getBlock(properties, x, y - 1, z, biomeProvider).getHandle()).getState())) {
+            y--;
+        }
+        return y;
+    }
+    
+    @Override
+    public @NotNull NoiseColumn getBaseColumn(int x, int z, @NotNull LevelHeightAccessor world, @NotNull RandomState noiseConfig) {
+        /*
+        BlockState[] array = new BlockState[world.getHeight()];
+        WorldProperties properties = new NMSWorldProperties(seed, world);
+        BiomeProvider biomeProvider = pack.getBiomeProvider().caching(properties);
+        for(int y = properties.getMaxHeight() - 1; y >= properties.getMinHeight(); y--) {
+            array[y - properties.getMinHeight()] = ((CraftBlockData) delegate.getBlock(properties, x, y, z, biomeProvider)
+                                                                             .getHandle()).getState();
+        }
+        return new NoiseColumn(getMinY(), array);
+
+         */
+        return vanilla.getBaseColumn(x, z, world, noiseConfig);
+    }
+
+    @Override
+    public void addDebugScreenInfo(@NotNull List<String> text, @NotNull RandomState noiseConfig, @NotNull BlockPos pos) {
+
+    }
+}
--- a/platforms/bukkit/nms/src/main/java/com/dfsek/terra/bukkit/nms/v1_19_R3/NMSInitializer.java
+++ b/platforms/bukkit/nms/src/main/java/com/dfsek/terra/bukkit/nms/v1_19_R3/NMSInitializer.java
@@ -0,0 +1,15 @@
+package com.dfsek.terra.bukkit.nms.v1_19_R3;
+
+import org.bukkit.Bukkit;
+
+import com.dfsek.terra.bukkit.PlatformImpl;
+import com.dfsek.terra.bukkit.nms.Initializer;
+
+
+public class NMSInitializer implements Initializer {
+    @Override
+    public void initialize(PlatformImpl platform) {
+        AwfulBukkitHacks.registerBiomes(platform.getRawConfigRegistry());
+        Bukkit.getPluginManager().registerEvents(new NMSInjectListener(), platform.getPlugin());
+    }
+}
--- a/platforms/bukkit/nms/src/main/java/com/dfsek/terra/bukkit/nms/v1_19_R3/NMSInjectListener.java
+++ b/platforms/bukkit/nms/src/main/java/com/dfsek/terra/bukkit/nms/v1_19_R3/NMSInjectListener.java
@@ -0,0 +1,48 @@
+package com.dfsek.terra.bukkit.nms.v1_19_R3;
+
+import net.minecraft.server.level.ServerLevel;
+import net.minecraft.world.level.chunk.ChunkGenerator;
+import org.bukkit.World;
+import org.bukkit.craftbukkit.v1_19_R3.CraftWorld;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.world.WorldInitEvent;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.HashSet;
+import java.util.Set;
+import java.util.concurrent.locks.ReentrantLock;
+
+import com.dfsek.terra.api.config.ConfigPack;
+import com.dfsek.terra.bukkit.generator.BukkitChunkGeneratorWrapper;
+
+
+public class NMSInjectListener implements Listener {
+    private static final Logger LOGGER = LoggerFactory.getLogger(NMSInjectListener.class);
+    private static final Set<World> INJECTED = new HashSet<>();
+    private static final ReentrantLock INJECT_LOCK = new ReentrantLock();
+    
+    @EventHandler
+    public void onWorldInit(WorldInitEvent event) {
+        if(!INJECTED.contains(event.getWorld()) &&
+           event.getWorld().getGenerator() instanceof BukkitChunkGeneratorWrapper bukkitChunkGeneratorWrapper) {
+            INJECT_LOCK.lock();
+            INJECTED.add(event.getWorld());
+            LOGGER.info("Preparing to take over the world: {}", event.getWorld().getName());
+            CraftWorld craftWorld = (CraftWorld) event.getWorld();
+            ServerLevel serverWorld = craftWorld.getHandle();
+            
+            ConfigPack pack = bukkitChunkGeneratorWrapper.getPack();
+            
+            ChunkGenerator vanilla = serverWorld.getChunkSource().getGenerator();
+            NMSBiomeProvider provider = new NMSBiomeProvider(pack.getBiomeProvider(), craftWorld.getSeed());
+    
+            serverWorld.getChunkSource().chunkMap.generator = new NMSChunkGeneratorDelegate(vanilla, pack, provider, craftWorld.getSeed());
+            
+            LOGGER.info("Successfully injected into world.");
+            
+            INJECT_LOCK.unlock();
+        }
+    }
+}
--- a/platforms/bukkit/nms/src/main/java/com/dfsek/terra/bukkit/nms/v1_19_R3/NMSWorldProperties.java
+++ b/platforms/bukkit/nms/src/main/java/com/dfsek/terra/bukkit/nms/v1_19_R3/NMSWorldProperties.java
@@ -0,0 +1,36 @@
+package com.dfsek.terra.bukkit.nms.v1_19_R3;
+
+import net.minecraft.world.level.LevelHeightAccessor;
+
+import com.dfsek.terra.api.world.info.WorldProperties;
+
+
+public class NMSWorldProperties implements WorldProperties {
+    private final long seed;
+    private final LevelHeightAccessor height;
+    
+    public NMSWorldProperties(long seed, LevelHeightAccessor height) {
+        this.seed = seed;
+        this.height = height;
+    }
+    
+    @Override
+    public Object getHandle() {
+        return height;
+    }
+    
+    @Override
+    public long getSeed() {
+        return seed;
+    }
+    
+    @Override
+    public int getMaxHeight() {
+        return height.getMaxBuildHeight();
+    }
+    
+    @Override
+    public int getMinHeight() {
+        return height.getMinBuildHeight();
+    }
+}
--- a/platforms/bukkit/nms/src/main/java/com/dfsek/terra/bukkit/nms/v1_19_R3/Reflection.java
+++ b/platforms/bukkit/nms/src/main/java/com/dfsek/terra/bukkit/nms/v1_19_R3/Reflection.java
@@ -0,0 +1,52 @@
+package com.dfsek.terra.bukkit.nms.v1_19_R3;
+
+import net.minecraft.core.Holder;
+import net.minecraft.core.Holder.Reference;
+import net.minecraft.core.MappedRegistry;
+import net.minecraft.world.level.LevelAccessor;
+import net.minecraft.world.level.StructureManager;
+import xyz.jpenilla.reflectionremapper.ReflectionRemapper;
+import xyz.jpenilla.reflectionremapper.proxy.ReflectionProxyFactory;
+import xyz.jpenilla.reflectionremapper.proxy.annotation.FieldGetter;
+import xyz.jpenilla.reflectionremapper.proxy.annotation.FieldSetter;
+import xyz.jpenilla.reflectionremapper.proxy.annotation.MethodName;
+import xyz.jpenilla.reflectionremapper.proxy.annotation.Proxies;
+
+import java.util.Objects;
+
+
+public class Reflection {
+    public static final MappedRegistryProxy MAPPED_REGISTRY;
+    public static final StructureManagerProxy STRUCTURE_MANAGER;
+    
+    public static final ReferenceProxy REFERENCE;
+    
+    static {
+        ReflectionRemapper reflectionRemapper = ReflectionRemapper.forReobfMappingsInPaperJar();
+        ReflectionProxyFactory reflectionProxyFactory = ReflectionProxyFactory.create(reflectionRemapper,
+                                                                                      Reflection.class.getClassLoader());
+        
+        MAPPED_REGISTRY = reflectionProxyFactory.reflectionProxy(MappedRegistryProxy.class);
+        STRUCTURE_MANAGER = reflectionProxyFactory.reflectionProxy(StructureManagerProxy.class);
+        REFERENCE = reflectionProxyFactory.reflectionProxy(ReferenceProxy.class);
+    }
+    
+    
+    @Proxies(MappedRegistry.class)
+    public interface MappedRegistryProxy {
+        @FieldSetter("frozen")
+        void setFrozen(MappedRegistry<?> instance, boolean frozen);
+    }
+    
+    @Proxies(StructureManager.class)
+    public interface StructureManagerProxy {
+        @FieldGetter("level")
+        LevelAccessor getLevel(StructureManager instance);
+    }
+    
+    @Proxies(Holder.Reference.class)
+    public interface ReferenceProxy {
+        @MethodName("bindValue")
+        <T> void invokeBindValue(Reference<T> instance, T value);
+    }
+}
--- a/platforms/bukkit/nms/src/main/java/com/dfsek/terra/bukkit/nms/v1_19_R3/RegistryFetcher.java
+++ b/platforms/bukkit/nms/src/main/java/com/dfsek/terra/bukkit/nms/v1_19_R3/RegistryFetcher.java
@@ -0,0 +1,25 @@
+package com.dfsek.terra.bukkit.nms.v1_19_R3;
+
+import net.minecraft.core.Registry;
+import net.minecraft.core.registries.Registries;
+import net.minecraft.resources.ResourceKey;
+import net.minecraft.server.dedicated.DedicatedServer;
+import net.minecraft.world.level.biome.Biome;
+import net.minecraft.world.level.levelgen.structure.StructureSet;
+import org.bukkit.Bukkit;
+import org.bukkit.craftbukkit.v1_19_R3.CraftServer;
+
+
+public class RegistryFetcher {
+    private static <T> Registry<T> getRegistry(ResourceKey<Registry<T>> key) {
+        CraftServer craftserver = (CraftServer) Bukkit.getServer();
+        DedicatedServer dedicatedserver = craftserver.getServer();
+        return dedicatedserver
+                .registryAccess()
+                .registryOrThrow(key);
+    }
+    
+    public static Registry<Biome> biomeRegistry() {
+        return getRegistry(Registries.BIOME);
+    }
+}