240 lines
9.1 KiB
Java
240 lines
9.1 KiB
Java
package net.minecraft.world.level.levelgen.flat;
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import com.google.common.collect.Lists;
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import com.mojang.logging.LogUtils;
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import com.mojang.serialization.Codec;
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import com.mojang.serialization.DataResult;
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import com.mojang.serialization.codecs.RecordCodecBuilder;
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import java.util.List;
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import java.util.Optional;
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import java.util.function.Function;
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import net.minecraft.core.Holder;
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import net.minecraft.core.HolderGetter;
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import net.minecraft.core.HolderSet;
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import net.minecraft.core.RegistryCodecs;
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import net.minecraft.core.registries.Registries;
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import net.minecraft.data.worldgen.placement.MiscOverworldPlacements;
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import net.minecraft.data.worldgen.placement.PlacementUtils;
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import net.minecraft.resources.RegistryOps;
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import net.minecraft.world.level.biome.Biome;
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import net.minecraft.world.level.biome.BiomeGenerationSettings;
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import net.minecraft.world.level.biome.Biomes;
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import net.minecraft.world.level.block.Blocks;
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import net.minecraft.world.level.block.state.BlockState;
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import net.minecraft.world.level.dimension.DimensionType;
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import net.minecraft.world.level.levelgen.GenerationStep;
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import net.minecraft.world.level.levelgen.Heightmap;
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import net.minecraft.world.level.levelgen.feature.Feature;
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import net.minecraft.world.level.levelgen.feature.configurations.LayerConfiguration;
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import net.minecraft.world.level.levelgen.placement.PlacedFeature;
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import net.minecraft.world.level.levelgen.structure.BuiltinStructureSets;
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import net.minecraft.world.level.levelgen.structure.StructureSet;
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import org.slf4j.Logger;
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public class FlatLevelGeneratorSettings {
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private static final Logger LOGGER = LogUtils.getLogger();
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public static final Codec<FlatLevelGeneratorSettings> CODEC = RecordCodecBuilder.create(
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instance -> instance.group(
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RegistryCodecs.homogeneousList(Registries.STRUCTURE_SET)
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.lenientOptionalFieldOf("structure_overrides")
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.forGetter(flatLevelGeneratorSettings -> flatLevelGeneratorSettings.structureOverrides),
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FlatLayerInfo.CODEC.listOf().fieldOf("layers").forGetter(FlatLevelGeneratorSettings::getLayersInfo),
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Codec.BOOL.fieldOf("lakes").orElse(false).forGetter(flatLevelGeneratorSettings -> flatLevelGeneratorSettings.addLakes),
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Codec.BOOL.fieldOf("features").orElse(false).forGetter(flatLevelGeneratorSettings -> flatLevelGeneratorSettings.decoration),
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Biome.CODEC
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.lenientOptionalFieldOf("biome")
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.orElseGet(Optional::empty)
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.forGetter(flatLevelGeneratorSettings -> Optional.of(flatLevelGeneratorSettings.biome)),
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RegistryOps.retrieveElement(Biomes.PLAINS),
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RegistryOps.retrieveElement(MiscOverworldPlacements.LAKE_LAVA_UNDERGROUND),
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RegistryOps.retrieveElement(MiscOverworldPlacements.LAKE_LAVA_SURFACE)
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)
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.apply(instance, FlatLevelGeneratorSettings::new)
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)
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.<FlatLevelGeneratorSettings>comapFlatMap(FlatLevelGeneratorSettings::validateHeight, Function.identity())
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.stable();
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private final Optional<HolderSet<StructureSet>> structureOverrides;
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private final List<FlatLayerInfo> layersInfo = Lists.<FlatLayerInfo>newArrayList();
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private final Holder<Biome> biome;
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private final List<BlockState> layers;
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private boolean voidGen;
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private boolean decoration;
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private boolean addLakes;
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private final List<Holder<PlacedFeature>> lakes;
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private static DataResult<FlatLevelGeneratorSettings> validateHeight(FlatLevelGeneratorSettings flatSettings) {
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int i = flatSettings.layersInfo.stream().mapToInt(FlatLayerInfo::getHeight).sum();
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return i > DimensionType.Y_SIZE
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? DataResult.error(() -> "Sum of layer heights is > " + DimensionType.Y_SIZE, flatSettings)
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: DataResult.success(flatSettings);
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}
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private FlatLevelGeneratorSettings(
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Optional<HolderSet<StructureSet>> structureOverrides,
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List<FlatLayerInfo> layersInfo,
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boolean addLakes,
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boolean decoration,
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Optional<Holder<Biome>> biome,
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Holder.Reference<Biome> defaultBiome,
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Holder<PlacedFeature> lavaUnderground,
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Holder<PlacedFeature> lavaSurface
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) {
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this(structureOverrides, getBiome(biome, defaultBiome), List.of(lavaUnderground, lavaSurface));
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if (addLakes) {
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this.setAddLakes();
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}
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if (decoration) {
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this.setDecoration();
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}
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this.layersInfo.addAll(layersInfo);
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this.updateLayers();
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}
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private static Holder<Biome> getBiome(Optional<? extends Holder<Biome>> biome, Holder<Biome> defaultBiome) {
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if (biome.isEmpty()) {
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LOGGER.error("Unknown biome, defaulting to plains");
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return defaultBiome;
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} else {
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return (Holder<Biome>)biome.get();
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}
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}
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public FlatLevelGeneratorSettings(Optional<HolderSet<StructureSet>> structureOverrides, Holder<Biome> biome, List<Holder<PlacedFeature>> lakes) {
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this.structureOverrides = structureOverrides;
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this.biome = biome;
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this.layers = Lists.<BlockState>newArrayList();
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this.lakes = lakes;
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}
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public FlatLevelGeneratorSettings withBiomeAndLayers(List<FlatLayerInfo> layerInfos, Optional<HolderSet<StructureSet>> structureSets, Holder<Biome> biome) {
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FlatLevelGeneratorSettings flatLevelGeneratorSettings = new FlatLevelGeneratorSettings(structureSets, biome, this.lakes);
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for (FlatLayerInfo flatLayerInfo : layerInfos) {
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flatLevelGeneratorSettings.layersInfo.add(new FlatLayerInfo(flatLayerInfo.getHeight(), flatLayerInfo.getBlockState().getBlock()));
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flatLevelGeneratorSettings.updateLayers();
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}
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if (this.decoration) {
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flatLevelGeneratorSettings.setDecoration();
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}
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if (this.addLakes) {
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flatLevelGeneratorSettings.setAddLakes();
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}
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return flatLevelGeneratorSettings;
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}
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public void setDecoration() {
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this.decoration = true;
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}
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public void setAddLakes() {
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this.addLakes = true;
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}
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public BiomeGenerationSettings adjustGenerationSettings(Holder<Biome> biome) {
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if (!biome.equals(this.biome)) {
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return biome.value().getGenerationSettings();
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} else {
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BiomeGenerationSettings biomeGenerationSettings = this.getBiome().value().getGenerationSettings();
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BiomeGenerationSettings.PlainBuilder plainBuilder = new BiomeGenerationSettings.PlainBuilder();
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if (this.addLakes) {
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for (Holder<PlacedFeature> holder : this.lakes) {
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plainBuilder.addFeature(GenerationStep.Decoration.LAKES, holder);
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}
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}
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boolean bl = (!this.voidGen || biome.is(Biomes.THE_VOID)) && this.decoration;
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if (bl) {
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List<HolderSet<PlacedFeature>> list = biomeGenerationSettings.features();
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for (int i = 0; i < list.size(); i++) {
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if (i != GenerationStep.Decoration.UNDERGROUND_STRUCTURES.ordinal()
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&& i != GenerationStep.Decoration.SURFACE_STRUCTURES.ordinal()
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&& (!this.addLakes || i != GenerationStep.Decoration.LAKES.ordinal())) {
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for (Holder<PlacedFeature> holder2 : (HolderSet)list.get(i)) {
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plainBuilder.addFeature(i, holder2);
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}
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}
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}
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}
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List<BlockState> list = this.getLayers();
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for (int ix = 0; ix < list.size(); ix++) {
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BlockState blockState = (BlockState)list.get(ix);
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if (!Heightmap.Types.MOTION_BLOCKING.isOpaque().test(blockState)) {
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list.set(ix, null);
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plainBuilder.addFeature(
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GenerationStep.Decoration.TOP_LAYER_MODIFICATION, PlacementUtils.inlinePlaced(Feature.FILL_LAYER, new LayerConfiguration(ix, blockState))
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);
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}
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}
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return plainBuilder.build();
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}
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}
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public Optional<HolderSet<StructureSet>> structureOverrides() {
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return this.structureOverrides;
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}
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/**
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* Return the biome used on this preset.
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*/
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public Holder<Biome> getBiome() {
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return this.biome;
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}
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/**
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* Return the list of layers on this preset.
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*/
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public List<FlatLayerInfo> getLayersInfo() {
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return this.layersInfo;
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}
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public List<BlockState> getLayers() {
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return this.layers;
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}
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public void updateLayers() {
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this.layers.clear();
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for (FlatLayerInfo flatLayerInfo : this.layersInfo) {
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for (int i = 0; i < flatLayerInfo.getHeight(); i++) {
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this.layers.add(flatLayerInfo.getBlockState());
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}
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}
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this.voidGen = this.layers.stream().allMatch(blockState -> blockState.is(Blocks.AIR));
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}
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public static FlatLevelGeneratorSettings getDefault(
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HolderGetter<Biome> biomes, HolderGetter<StructureSet> structureSetGetter, HolderGetter<PlacedFeature> placedFeatureGetter
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) {
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HolderSet<StructureSet> holderSet = HolderSet.direct(
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structureSetGetter.getOrThrow(BuiltinStructureSets.STRONGHOLDS), structureSetGetter.getOrThrow(BuiltinStructureSets.VILLAGES)
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);
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FlatLevelGeneratorSettings flatLevelGeneratorSettings = new FlatLevelGeneratorSettings(
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Optional.of(holderSet), getDefaultBiome(biomes), createLakesList(placedFeatureGetter)
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);
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flatLevelGeneratorSettings.getLayersInfo().add(new FlatLayerInfo(1, Blocks.BEDROCK));
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flatLevelGeneratorSettings.getLayersInfo().add(new FlatLayerInfo(2, Blocks.DIRT));
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flatLevelGeneratorSettings.getLayersInfo().add(new FlatLayerInfo(1, Blocks.GRASS_BLOCK));
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flatLevelGeneratorSettings.updateLayers();
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return flatLevelGeneratorSettings;
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}
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public static Holder<Biome> getDefaultBiome(HolderGetter<Biome> biomes) {
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return biomes.getOrThrow(Biomes.PLAINS);
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}
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public static List<Holder<PlacedFeature>> createLakesList(HolderGetter<PlacedFeature> placedFeatureGetter) {
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return List.of(
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placedFeatureGetter.getOrThrow(MiscOverworldPlacements.LAKE_LAVA_UNDERGROUND), placedFeatureGetter.getOrThrow(MiscOverworldPlacements.LAKE_LAVA_SURFACE)
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);
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}
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}
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