Code/net/minecraft/world/level/biome/MultiNoiseBiomeSourceParameterList.java

package net.minecraft.world.level.biome;

import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableList.Builder;
import com.mojang.datafixers.util.Pair;
import com.mojang.serialization.Codec;
import com.mojang.serialization.DataResult;
import com.mojang.serialization.codecs.RecordCodecBuilder;
import com.mojang.serialization.codecs.RecordCodecBuilder.Instance;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.function.Function;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import net.minecraft.core.Holder;
import net.minecraft.core.HolderGetter;
import net.minecraft.core.registries.Registries;
import net.minecraft.resources.RegistryFileCodec;
import net.minecraft.resources.RegistryOps;
import net.minecraft.resources.ResourceKey;
import net.minecraft.resources.ResourceLocation;

public class MultiNoiseBiomeSourceParameterList {
    public static final Codec<MultiNoiseBiomeSourceParameterList> DIRECT_CODEC = RecordCodecBuilder.create(
        p_275469_ -> p_275469_.group(
                MultiNoiseBiomeSourceParameterList.Preset.CODEC.fieldOf("preset").forGetter(p_275196_ -> p_275196_.preset),
                RegistryOps.retrieveGetter(Registries.BIOME)
            )
            .apply(p_275469_, MultiNoiseBiomeSourceParameterList::new)
    );
    public static final Codec<Holder<MultiNoiseBiomeSourceParameterList>> CODEC = RegistryFileCodec.create(Registries.MULTI_NOISE_BIOME_SOURCE_PARAMETER_LIST, DIRECT_CODEC);
    private final MultiNoiseBiomeSourceParameterList.Preset preset;
    private final Climate.ParameterList<Holder<Biome>> parameters;

    public MultiNoiseBiomeSourceParameterList(MultiNoiseBiomeSourceParameterList.Preset p_275275_, HolderGetter<Biome> p_275192_) {
        this.preset = p_275275_;
        this.parameters = p_275275_.provider.apply(p_275192_::getOrThrow);
    }

    public Climate.ParameterList<Holder<Biome>> parameters() {
        return this.parameters;
    }

    public static Map<MultiNoiseBiomeSourceParameterList.Preset, Climate.ParameterList<ResourceKey<Biome>>> knownPresets() {
        return MultiNoiseBiomeSourceParameterList.Preset.BY_NAME
            .values()
            .stream()
            .collect(
                Collectors.toMap(
                    p_275210_ -> (MultiNoiseBiomeSourceParameterList.Preset)p_275210_, p_275480_ -> p_275480_.provider().apply(p_275406_ -> p_275406_)
                )
            );
    }

    public record Preset(ResourceLocation id, MultiNoiseBiomeSourceParameterList.Preset.SourceProvider provider) {
        public static final MultiNoiseBiomeSourceParameterList.Preset NETHER = new MultiNoiseBiomeSourceParameterList.Preset(
            ResourceLocation.withDefaultNamespace("nether"),
            new MultiNoiseBiomeSourceParameterList.Preset.SourceProvider() {
                @Override
                public <T> Climate.ParameterList<T> apply(Function<ResourceKey<Biome>, T> p_275356_) {
                    return new Climate.ParameterList<>(
                        List.of(
                            Pair.of(Climate.parameters(0.0F, 0.0F, 0.0F, 0.0F, 0.0F, 0.0F, 0.0F), p_275356_.apply(Biomes.NETHER_WASTES)),
                            Pair.of(Climate.parameters(0.0F, -0.5F, 0.0F, 0.0F, 0.0F, 0.0F, 0.0F), p_275356_.apply(Biomes.SOUL_SAND_VALLEY)),
                            Pair.of(Climate.parameters(0.4F, 0.0F, 0.0F, 0.0F, 0.0F, 0.0F, 0.0F), p_275356_.apply(Biomes.CRIMSON_FOREST)),
                            Pair.of(Climate.parameters(0.0F, 0.5F, 0.0F, 0.0F, 0.0F, 0.0F, 0.375F), p_275356_.apply(Biomes.WARPED_FOREST)),
                            Pair.of(Climate.parameters(-0.5F, 0.0F, 0.0F, 0.0F, 0.0F, 0.0F, 0.175F), p_275356_.apply(Biomes.BASALT_DELTAS))
                        )
                    );
                }
            }
        );
        public static final MultiNoiseBiomeSourceParameterList.Preset OVERWORLD = new MultiNoiseBiomeSourceParameterList.Preset(
            ResourceLocation.withDefaultNamespace("overworld"), new MultiNoiseBiomeSourceParameterList.Preset.SourceProvider() {
                @Override
                public <T> Climate.ParameterList<T> apply(Function<ResourceKey<Biome>, T> p_275530_) {
                    return MultiNoiseBiomeSourceParameterList.Preset.generateOverworldBiomes(p_275530_);
                }
            }
        );
        static final Map<ResourceLocation, MultiNoiseBiomeSourceParameterList.Preset> BY_NAME = Stream.of(NETHER, OVERWORLD)
            .collect(Collectors.toMap(MultiNoiseBiomeSourceParameterList.Preset::id, p_275365_ -> (MultiNoiseBiomeSourceParameterList.Preset)p_275365_));
        public static final Codec<MultiNoiseBiomeSourceParameterList.Preset> CODEC = ResourceLocation.CODEC
            .flatXmap(
                p_275567_ -> Optional.ofNullable(BY_NAME.get(p_275567_))
                    .map(DataResult::success)
                    .orElseGet(() -> DataResult.error(() -> "Unknown preset: " + p_275567_)),
                p_275325_ -> DataResult.success(p_275325_.id)
            );

        static <T> Climate.ParameterList<T> generateOverworldBiomes(Function<ResourceKey<Biome>, T> p_277826_) {
            Builder<Pair<Climate.ParameterPoint, T>> builder = ImmutableList.builder();
            new OverworldBiomeBuilder().addBiomes(p_275579_ -> builder.add(p_275579_.mapSecond(p_277826_)));
            return new Climate.ParameterList<>(builder.build());
        }

        public Stream<ResourceKey<Biome>> usedBiomes() {
            return this.provider.apply(p_275429_ -> p_275429_).values().stream().map(Pair::getSecond).distinct();
        }

        @FunctionalInterface
        interface SourceProvider {
            <T> Climate.ParameterList<T> apply(Function<ResourceKey<Biome>, T> p_275485_);
        }
    }
}