Uses of Class
net.minecraft.world.gen.StructureAccessor
Packages that use StructureAccessor
Package
Description
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Uses of StructureAccessor in net.minecraft.server.world
Fields in net.minecraft.server.world declared as StructureAccessorMethods in net.minecraft.server.world that return StructureAccessor -
Uses of StructureAccessor in net.minecraft.structure
Methods in net.minecraft.structure with parameters of type StructureAccessorModifier and TypeMethodDescriptionvoidPostPlacementProcessor.afterPlace(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos pos, StructurePiecesList children) voidBuriedTreasureGenerator.Piece.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidDesertTempleGenerator.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidIglooGenerator.Piece.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidJungleTempleGenerator.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidMineshaftGenerator.MineshaftCorridor.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidMineshaftGenerator.MineshaftCrossing.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidMineshaftGenerator.MineshaftRoom.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidMineshaftGenerator.MineshaftStairs.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidNetherFortressGenerator.Bridge.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidNetherFortressGenerator.BridgeCrossing.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidNetherFortressGenerator.BridgeEnd.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidNetherFortressGenerator.BridgePlatform.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidNetherFortressGenerator.BridgeSmallCrossing.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidNetherFortressGenerator.BridgeStairs.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidNetherFortressGenerator.CorridorBalcony.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidNetherFortressGenerator.CorridorCrossing.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidNetherFortressGenerator.CorridorExit.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidNetherFortressGenerator.CorridorLeftTurn.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidNetherFortressGenerator.CorridorNetherWartsRoom.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidNetherFortressGenerator.CorridorRightTurn.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidNetherFortressGenerator.CorridorStairs.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidNetherFortressGenerator.SmallCorridor.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidNetherFossilGenerator.Piece.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidOceanMonumentGenerator.Base.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidOceanMonumentGenerator.CoreRoom.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidOceanMonumentGenerator.DoubleXRoom.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidOceanMonumentGenerator.DoubleXYRoom.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidOceanMonumentGenerator.DoubleYRoom.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidOceanMonumentGenerator.DoubleYZRoom.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidOceanMonumentGenerator.DoubleZRoom.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidOceanMonumentGenerator.Entry.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidOceanMonumentGenerator.Penthouse.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidOceanMonumentGenerator.SimpleRoom.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidOceanMonumentGenerator.SimpleRoomTop.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidOceanMonumentGenerator.WingRoom.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidOceanRuinGenerator.Piece.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidPoolStructurePiece.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox boundingBox, BlockPos pivot, boolean keepJigsaws) voidPoolStructurePiece.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidRuinedPortalStructurePiece.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidShipwreckGenerator.Piece.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidSimpleStructurePiece.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidStrongholdGenerator.ChestCorridor.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidStrongholdGenerator.Corridor.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidStrongholdGenerator.FiveWayCrossing.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidStrongholdGenerator.LeftTurn.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidStrongholdGenerator.Library.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidStrongholdGenerator.PortalRoom.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidStrongholdGenerator.PrisonHall.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidStrongholdGenerator.RightTurn.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidStrongholdGenerator.SmallCorridor.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidStrongholdGenerator.SpiralStaircase.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidStrongholdGenerator.SquareRoom.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidStrongholdGenerator.Stairs.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) abstract voidStructurePiece.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidSwampHutGenerator.generate(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos, BlockPos pivot) voidStructureStart.place(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox chunkBox, ChunkPos chunkPos) -
Uses of StructureAccessor in net.minecraft.structure.pool
Methods in net.minecraft.structure.pool with parameters of type StructureAccessorModifier and TypeMethodDescriptionbooleanEmptyPoolElement.generate(StructureTemplateManager structureTemplateManager, StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, BlockPos pos, BlockPos pivot, BlockRotation rotation, BlockBox box, Random random, boolean keepJigsaws) booleanFeaturePoolElement.generate(StructureTemplateManager structureTemplateManager, StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, BlockPos pos, BlockPos pivot, BlockRotation rotation, BlockBox box, Random random, boolean keepJigsaws) booleanListPoolElement.generate(StructureTemplateManager structureTemplateManager, StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, BlockPos pos, BlockPos pivot, BlockRotation rotation, BlockBox box, Random random, boolean keepJigsaws) booleanSinglePoolElement.generate(StructureTemplateManager structureTemplateManager, StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, BlockPos pos, BlockPos pivot, BlockRotation rotation, BlockBox box, Random random, boolean keepJigsaws) abstract booleanStructurePoolElement.generate(StructureTemplateManager structureTemplateManager, StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, BlockPos pos, BlockPos pivot, BlockRotation rotation, BlockBox box, Random random, boolean keepJigsaws) -
Uses of StructureAccessor in net.minecraft.world
Fields in net.minecraft.world declared as StructureAccessorMethods in net.minecraft.world with parameters of type StructureAccessorModifier and TypeMethodDescriptionprivate static booleanSpawnHelper.canSpawn(ServerWorld world, SpawnGroup group, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, SpawnSettings.SpawnEntry spawnEntry, BlockPos.Mutable pos, double squaredDistance) private static booleanSpawnHelper.containsSpawnEntry(ServerWorld world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, SpawnGroup spawnGroup, SpawnSettings.SpawnEntry spawnEntry, BlockPos pos) private static Pool<SpawnSettings.SpawnEntry>SpawnHelper.getSpawnEntries(ServerWorld world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, SpawnGroup spawnGroup, BlockPos pos, @Nullable RegistryEntry<Biome> biomeEntry) private static Optional<SpawnSettings.SpawnEntry>SpawnHelper.pickRandomSpawnEntry(ServerWorld world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, SpawnGroup spawnGroup, Random random, BlockPos pos) static booleanSpawnHelper.shouldUseNetherFortressSpawns(BlockPos pos, ServerWorld world, SpawnGroup spawnGroup, StructureAccessor structureAccessor) -
Uses of StructureAccessor in net.minecraft.world.gen
Methods in net.minecraft.world.gen that return StructureAccessorMethods in net.minecraft.world.gen with parameters of type StructureAccessorModifier and TypeMethodDescriptionstatic StructureWeightSamplerStructureWeightSampler.method_42695(StructureAccessor structureAccessor, ChunkPos chunkPos) -
Uses of StructureAccessor in net.minecraft.world.gen.chunk
Methods in net.minecraft.world.gen.chunk with parameters of type StructureAccessorModifier and TypeMethodDescriptionvoidChunkGenerator.addStructureReferences(StructureWorldAccess world, StructureAccessor structureAccessor, Chunk chunk) Finds all structures that the given chunk intersects, and adds references to their starting chunks to it.abstract voidChunkGenerator.buildSurface(ChunkRegion region, StructureAccessor structures, NoiseConfig noiseConfig, Chunk chunk) Places the surface blocks of the biomes after the noise has been generated.voidDebugChunkGenerator.buildSurface(ChunkRegion region, StructureAccessor structures, NoiseConfig noiseConfig, Chunk chunk) Places the surface blocks of the biomes after the noise has been generated.voidFlatChunkGenerator.buildSurface(ChunkRegion region, StructureAccessor structures, NoiseConfig noiseConfig, Chunk chunk) Places the surface blocks of the biomes after the noise has been generated.voidNoiseChunkGenerator.buildSurface(ChunkRegion region, StructureAccessor structures, NoiseConfig noiseConfig, Chunk chunk) Places the surface blocks of the biomes after the noise has been generated.abstract voidChunkGenerator.carve(ChunkRegion chunkRegion, long seed, NoiseConfig noiseConfig, BiomeAccess world, StructureAccessor structureAccessor, Chunk chunk, GenerationStep.Carver carverStep) Generates caves for the given chunk.voidDebugChunkGenerator.carve(ChunkRegion chunkRegion, long seed, NoiseConfig noiseConfig, BiomeAccess world, StructureAccessor structureAccessor, Chunk chunk, GenerationStep.Carver carverStep) Generates caves for the given chunk.voidFlatChunkGenerator.carve(ChunkRegion chunkRegion, long seed, NoiseConfig noiseConfig, BiomeAccess world, StructureAccessor structureAccessor, Chunk chunk, GenerationStep.Carver carverStep) Generates caves for the given chunk.voidNoiseChunkGenerator.carve(ChunkRegion chunkRegion, long seed, NoiseConfig noiseConfig, BiomeAccess world, StructureAccessor structureAccessor, Chunk chunk, GenerationStep.Carver carverStep) Generates caves for the given chunk.private static booleanChunkGenerator.checkNotReferenced(StructureAccessor structureAccessor, StructureStart start) voidChunkGenerator.generateFeatures(StructureWorldAccess world, Chunk chunk, StructureAccessor structureAccessor) voidDebugChunkGenerator.generateFeatures(StructureWorldAccess world, Chunk chunk, StructureAccessor structureAccessor) ChunkGenerator.getEntitySpawnList(RegistryEntry<Biome> biome, StructureAccessor accessor, SpawnGroup group, BlockPos pos) private static intChunkGenerator.getStructureReferences(StructureAccessor structureAccessor, Chunk chunk, ChunkSectionPos sectionPos, Structure structure) private @Nullable com.mojang.datafixers.util.Pair<BlockPos,RegistryEntry<Structure>> ChunkGenerator.locateConcentricRingsStructure(Set<RegistryEntry<Structure>> structures, ServerWorld world, StructureAccessor structureAccessor, BlockPos center, boolean skipReferencedStructures, ConcentricRingsStructurePlacement placement) private static @Nullable com.mojang.datafixers.util.Pair<BlockPos,RegistryEntry<Structure>> ChunkGenerator.locateRandomSpreadStructure(Set<RegistryEntry<Structure>> structures, WorldView world, StructureAccessor structureAccessor, int centerChunkX, int centerChunkZ, int radius, boolean skipReferencedStructures, long seed, RandomSpreadStructurePlacement placement) private static @Nullable com.mojang.datafixers.util.Pair<BlockPos,RegistryEntry<Structure>> ChunkGenerator.locateStructure(Set<RegistryEntry<Structure>> structures, WorldView world, StructureAccessor structureAccessor, boolean skipReferencedStructures, StructurePlacement placement, ChunkPos pos) private ChunkNoiseSamplerNoiseChunkGenerator.method_41537(Chunk chunk, StructureAccessor structureAccessor, Blender blender, NoiseConfig noiseConfig) voidNoiseChunkGenerator.method_41538(Chunk chunk, HeightContext heightContext, NoiseConfig noiseConfig, StructureAccessor structureAccessor, BiomeAccess biomeAccess, Registry<Biome> registry, Blender blender) ChunkGenerator.populateBiomes(Registry<Biome> biomeRegistry, Executor executor, NoiseConfig noiseConfig, Blender blender, StructureAccessor structureAccessor, Chunk chunk) NoiseChunkGenerator.populateBiomes(Registry<Biome> biomeRegistry, Executor executor, NoiseConfig noiseConfig, Blender blender, StructureAccessor structureAccessor, Chunk chunk) private voidNoiseChunkGenerator.populateBiomes(Blender blender, NoiseConfig noiseConfig, StructureAccessor structureAccessor, Chunk chunk) abstract CompletableFuture<Chunk>ChunkGenerator.populateNoise(Executor executor, Blender blender, NoiseConfig noiseConfig, StructureAccessor structureAccessor, Chunk chunk) Generates the base shape of the chunk out of the basic block states as decided by this chunk generator's config.DebugChunkGenerator.populateNoise(Executor executor, Blender blender, NoiseConfig noiseConfig, StructureAccessor structureAccessor, Chunk chunk) Generates the base shape of the chunk out of the basic block states as decided by this chunk generator's config.FlatChunkGenerator.populateNoise(Executor executor, Blender blender, NoiseConfig noiseConfig, StructureAccessor structureAccessor, Chunk chunk) Generates the base shape of the chunk out of the basic block states as decided by this chunk generator's config.NoiseChunkGenerator.populateNoise(Executor executor, Blender blender, NoiseConfig noiseConfig, StructureAccessor structureAccessor, Chunk chunk) Generates the base shape of the chunk out of the basic block states as decided by this chunk generator's config.private ChunkNoiseChunkGenerator.populateNoise(Blender blender, StructureAccessor structureAccessor, NoiseConfig noiseConfig, Chunk chunk, int int2, int int3) voidChunkGenerator.setStructureStarts(DynamicRegistryManager registryManager, NoiseConfig noiseConfig, StructureAccessor structureAccessor, Chunk chunk, StructureTemplateManager structureTemplateManager, long seed) Determines which structures should start in the given chunk and creates their starting points.private booleanChunkGenerator.trySetStructureStart(StructureSet.WeightedEntry weightedEntry, StructureAccessor structureAccessor, DynamicRegistryManager dynamicRegistryManager, NoiseConfig noiseConfig, StructureTemplateManager structureManager, long seed, Chunk chunk, ChunkPos pos, ChunkSectionPos sectionPos) -
Uses of StructureAccessor in net.minecraft.world.gen.structure
Methods in net.minecraft.world.gen.structure with parameters of type StructureAccessorModifier and TypeMethodDescriptionvoidStructure.postPlace(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox box, ChunkPos chunkPos, StructurePiecesList pieces) voidWoodlandMansionStructure.postPlace(StructureWorldAccess world, StructureAccessor structureAccessor, ChunkGenerator chunkGenerator, Random random, BlockBox box, ChunkPos chunkPos, StructurePiecesList pieces)