Code/net/minecraft/world/level/levelgen/DensityFunctions.java

package net.minecraft.world.level.levelgen;

import com.mojang.datafixers.util.Either;
import com.mojang.logging.LogUtils;
import com.mojang.serialization.Codec;
import com.mojang.serialization.MapCodec;
import com.mojang.serialization.codecs.RecordCodecBuilder;
import com.mojang.serialization.codecs.RecordCodecBuilder.Instance;
import it.unimi.dsi.fastutil.doubles.Double2DoubleFunction;
import java.util.Arrays;
import java.util.Optional;
import java.util.function.BiFunction;
import java.util.function.Function;
import net.minecraft.core.Holder;
import net.minecraft.core.Registry;
import net.minecraft.core.registries.BuiltInRegistries;
import net.minecraft.resources.ResourceKey;
import net.minecraft.util.CubicSpline;
import net.minecraft.util.KeyDispatchDataCodec;
import net.minecraft.util.Mth;
import net.minecraft.util.RandomSource;
import net.minecraft.util.StringRepresentable;
import net.minecraft.util.ToFloatFunction;
import net.minecraft.util.VisibleForDebug;
import net.minecraft.world.level.dimension.DimensionType;
import net.minecraft.world.level.levelgen.synth.BlendedNoise;
import net.minecraft.world.level.levelgen.synth.NormalNoise;
import net.minecraft.world.level.levelgen.synth.SimplexNoise;
import org.slf4j.Logger;

public final class DensityFunctions {
    private static final Codec<DensityFunction> CODEC = BuiltInRegistries.DENSITY_FUNCTION_TYPE
        .byNameCodec()
        .dispatch(p_327452_ -> p_327452_.codec().codec(), Function.identity());
    protected static final double MAX_REASONABLE_NOISE_VALUE = 1000000.0;
    static final Codec<Double> NOISE_VALUE_CODEC = Codec.doubleRange(-1000000.0, 1000000.0);
    public static final Codec<DensityFunction> DIRECT_CODEC = Codec.either(NOISE_VALUE_CODEC, CODEC)
        .xmap(
            p_224023_ -> p_224023_.map(DensityFunctions::constant, Function.identity()),
            p_224051_ -> p_224051_ instanceof DensityFunctions.Constant densityfunctions$constant
                ? Either.left(densityfunctions$constant.value())
                : Either.right(p_224051_)
        );

    public static MapCodec<? extends DensityFunction> bootstrap(Registry<MapCodec<? extends DensityFunction>> p_208343_) {
        register(p_208343_, "blend_alpha", DensityFunctions.BlendAlpha.CODEC);
        register(p_208343_, "blend_offset", DensityFunctions.BlendOffset.CODEC);
        register(p_208343_, "beardifier", DensityFunctions.BeardifierMarker.CODEC);
        register(p_208343_, "old_blended_noise", BlendedNoise.CODEC);

        for (DensityFunctions.Marker.Type densityfunctions$marker$type : DensityFunctions.Marker.Type.values()) {
            register(p_208343_, densityfunctions$marker$type.getSerializedName(), densityfunctions$marker$type.codec);
        }

        register(p_208343_, "noise", DensityFunctions.Noise.CODEC);
        register(p_208343_, "end_islands", DensityFunctions.EndIslandDensityFunction.CODEC);
        register(p_208343_, "weird_scaled_sampler", DensityFunctions.WeirdScaledSampler.CODEC);
        register(p_208343_, "shifted_noise", DensityFunctions.ShiftedNoise.CODEC);
        register(p_208343_, "range_choice", DensityFunctions.RangeChoice.CODEC);
        register(p_208343_, "shift_a", DensityFunctions.ShiftA.CODEC);
        register(p_208343_, "shift_b", DensityFunctions.ShiftB.CODEC);
        register(p_208343_, "shift", DensityFunctions.Shift.CODEC);
        register(p_208343_, "blend_density", DensityFunctions.BlendDensity.CODEC);
        register(p_208343_, "clamp", DensityFunctions.Clamp.CODEC);

        for (DensityFunctions.Mapped.Type densityfunctions$mapped$type : DensityFunctions.Mapped.Type.values()) {
            register(p_208343_, densityfunctions$mapped$type.getSerializedName(), densityfunctions$mapped$type.codec);
        }

        for (DensityFunctions.TwoArgumentSimpleFunction.Type densityfunctions$twoargumentsimplefunction$type : DensityFunctions.TwoArgumentSimpleFunction.Type.values()) {
            register(p_208343_, densityfunctions$twoargumentsimplefunction$type.getSerializedName(), densityfunctions$twoargumentsimplefunction$type.codec);
        }

        register(p_208343_, "spline", DensityFunctions.Spline.CODEC);
        register(p_208343_, "constant", DensityFunctions.Constant.CODEC);
        return register(p_208343_, "y_clamped_gradient", DensityFunctions.YClampedGradient.CODEC);
    }

    private static MapCodec<? extends DensityFunction> register(
        Registry<MapCodec<? extends DensityFunction>> p_224035_, String p_224036_, KeyDispatchDataCodec<? extends DensityFunction> p_224037_
    ) {
        return Registry.register(p_224035_, p_224036_, p_224037_.codec());
    }

    static <A, O> KeyDispatchDataCodec<O> singleArgumentCodec(Codec<A> p_224025_, Function<A, O> p_224026_, Function<O, A> p_224027_) {
        return KeyDispatchDataCodec.of(p_224025_.fieldOf("argument").xmap(p_224026_, p_224027_));
    }

    static <O> KeyDispatchDataCodec<O> singleFunctionArgumentCodec(Function<DensityFunction, O> p_224043_, Function<O, DensityFunction> p_224044_) {
        return singleArgumentCodec(DensityFunction.HOLDER_HELPER_CODEC, p_224043_, p_224044_);
    }

    static <O> KeyDispatchDataCodec<O> doubleFunctionArgumentCodec(
        BiFunction<DensityFunction, DensityFunction, O> p_224039_, Function<O, DensityFunction> p_224040_, Function<O, DensityFunction> p_224041_
    ) {
        return KeyDispatchDataCodec.of(
            RecordCodecBuilder.mapCodec(
                p_224049_ -> p_224049_.group(
                        DensityFunction.HOLDER_HELPER_CODEC.fieldOf("argument1").forGetter(p_224040_),
                        DensityFunction.HOLDER_HELPER_CODEC.fieldOf("argument2").forGetter(p_224041_)
                    )
                    .apply(p_224049_, p_224039_)
            )
        );
    }

    static <O> KeyDispatchDataCodec<O> makeCodec(MapCodec<O> p_224029_) {
        return KeyDispatchDataCodec.of(p_224029_);
    }

    private DensityFunctions() {
    }

    public static DensityFunction interpolated(DensityFunction p_208282_) {
        return new DensityFunctions.Marker(DensityFunctions.Marker.Type.Interpolated, p_208282_);
    }

    public static DensityFunction flatCache(DensityFunction p_208362_) {
        return new DensityFunctions.Marker(DensityFunctions.Marker.Type.FlatCache, p_208362_);
    }

    public static DensityFunction cache2d(DensityFunction p_208374_) {
        return new DensityFunctions.Marker(DensityFunctions.Marker.Type.Cache2D, p_208374_);
    }

    public static DensityFunction cacheOnce(DensityFunction p_208381_) {
        return new DensityFunctions.Marker(DensityFunctions.Marker.Type.CacheOnce, p_208381_);
    }

    public static DensityFunction cacheAllInCell(DensityFunction p_208388_) {
        return new DensityFunctions.Marker(DensityFunctions.Marker.Type.CacheAllInCell, p_208388_);
    }

    public static DensityFunction mappedNoise(
        Holder<NormalNoise.NoiseParameters> p_208337_, @Deprecated double p_208338_, double p_208339_, double p_208340_, double p_208341_
    ) {
        return mapFromUnitTo(new DensityFunctions.Noise(new DensityFunction.NoiseHolder(p_208337_), p_208338_, p_208339_), p_208340_, p_208341_);
    }

    public static DensityFunction mappedNoise(Holder<NormalNoise.NoiseParameters> p_208332_, double p_208333_, double p_208334_, double p_208335_) {
        return mappedNoise(p_208332_, 1.0, p_208333_, p_208334_, p_208335_);
    }

    public static DensityFunction mappedNoise(Holder<NormalNoise.NoiseParameters> p_208328_, double p_208329_, double p_208330_) {
        return mappedNoise(p_208328_, 1.0, 1.0, p_208329_, p_208330_);
    }

    public static DensityFunction shiftedNoise2d(
        DensityFunction p_208297_, DensityFunction p_208298_, double p_208299_, Holder<NormalNoise.NoiseParameters> p_208300_
    ) {
        return new DensityFunctions.ShiftedNoise(p_208297_, zero(), p_208298_, p_208299_, 0.0, new DensityFunction.NoiseHolder(p_208300_));
    }

    public static DensityFunction noise(Holder<NormalNoise.NoiseParameters> p_208323_) {
        return noise(p_208323_, 1.0, 1.0);
    }

    public static DensityFunction noise(Holder<NormalNoise.NoiseParameters> p_208369_, double p_208370_, double p_208371_) {
        return new DensityFunctions.Noise(new DensityFunction.NoiseHolder(p_208369_), p_208370_, p_208371_);
    }

    public static DensityFunction noise(Holder<NormalNoise.NoiseParameters> p_208325_, double p_208326_) {
        return noise(p_208325_, 1.0, p_208326_);
    }

    public static DensityFunction rangeChoice(DensityFunction p_208288_, double p_208289_, double p_208290_, DensityFunction p_208291_, DensityFunction p_208292_) {
        return new DensityFunctions.RangeChoice(p_208288_, p_208289_, p_208290_, p_208291_, p_208292_);
    }

    public static DensityFunction shiftA(Holder<NormalNoise.NoiseParameters> p_208367_) {
        return new DensityFunctions.ShiftA(new DensityFunction.NoiseHolder(p_208367_));
    }

    public static DensityFunction shiftB(Holder<NormalNoise.NoiseParameters> p_208379_) {
        return new DensityFunctions.ShiftB(new DensityFunction.NoiseHolder(p_208379_));
    }

    public static DensityFunction shift(Holder<NormalNoise.NoiseParameters> p_208386_) {
        return new DensityFunctions.Shift(new DensityFunction.NoiseHolder(p_208386_));
    }

    public static DensityFunction blendDensity(DensityFunction p_208390_) {
        return new DensityFunctions.BlendDensity(p_208390_);
    }

    public static DensityFunction endIslands(long p_208272_) {
        return new DensityFunctions.EndIslandDensityFunction(p_208272_);
    }

    public static DensityFunction weirdScaledSampler(
        DensityFunction p_208316_, Holder<NormalNoise.NoiseParameters> p_208317_, DensityFunctions.WeirdScaledSampler.RarityValueMapper p_208318_
    ) {
        return new DensityFunctions.WeirdScaledSampler(p_208316_, new DensityFunction.NoiseHolder(p_208317_), p_208318_);
    }

    public static DensityFunction add(DensityFunction p_208294_, DensityFunction p_208295_) {
        return DensityFunctions.TwoArgumentSimpleFunction.create(DensityFunctions.TwoArgumentSimpleFunction.Type.ADD, p_208294_, p_208295_);
    }

    public static DensityFunction mul(DensityFunction p_208364_, DensityFunction p_208365_) {
        return DensityFunctions.TwoArgumentSimpleFunction.create(DensityFunctions.TwoArgumentSimpleFunction.Type.MUL, p_208364_, p_208365_);
    }

    public static DensityFunction min(DensityFunction p_208376_, DensityFunction p_208377_) {
        return DensityFunctions.TwoArgumentSimpleFunction.create(DensityFunctions.TwoArgumentSimpleFunction.Type.MIN, p_208376_, p_208377_);
    }

    public static DensityFunction max(DensityFunction p_208383_, DensityFunction p_208384_) {
        return DensityFunctions.TwoArgumentSimpleFunction.create(DensityFunctions.TwoArgumentSimpleFunction.Type.MAX, p_208383_, p_208384_);
    }

    public static DensityFunction spline(CubicSpline<DensityFunctions.Spline.Point, DensityFunctions.Spline.Coordinate> p_224021_) {
        return new DensityFunctions.Spline(p_224021_);
    }

    public static DensityFunction zero() {
        return DensityFunctions.Constant.ZERO;
    }

    public static DensityFunction constant(double p_208265_) {
        return new DensityFunctions.Constant(p_208265_);
    }

    public static DensityFunction yClampedGradient(int p_208267_, int p_208268_, double p_208269_, double p_208270_) {
        return new DensityFunctions.YClampedGradient(p_208267_, p_208268_, p_208269_, p_208270_);
    }

    public static DensityFunction map(DensityFunction p_208313_, DensityFunctions.Mapped.Type p_208314_) {
        return DensityFunctions.Mapped.create(p_208314_, p_208313_);
    }

    private static DensityFunction mapFromUnitTo(DensityFunction p_208284_, double p_208285_, double p_208286_) {
        double d0 = (p_208285_ + p_208286_) * 0.5;
        double d1 = (p_208286_ - p_208285_) * 0.5;
        return add(constant(d0), mul(constant(d1), p_208284_));
    }

    public static DensityFunction blendAlpha() {
        return DensityFunctions.BlendAlpha.INSTANCE;
    }

    public static DensityFunction blendOffset() {
        return DensityFunctions.BlendOffset.INSTANCE;
    }

    public static DensityFunction lerp(DensityFunction p_208302_, DensityFunction p_208303_, DensityFunction p_208304_) {
        if (p_208303_ instanceof DensityFunctions.Constant densityfunctions$constant) {
            return lerp(p_208302_, densityfunctions$constant.value, p_208304_);
        } else {
            DensityFunction densityfunction = cacheOnce(p_208302_);
            DensityFunction densityfunction1 = add(mul(densityfunction, constant(-1.0)), constant(1.0));
            return add(mul(p_208303_, densityfunction1), mul(p_208304_, densityfunction));
        }
    }

    public static DensityFunction lerp(DensityFunction p_224031_, double p_224032_, DensityFunction p_224033_) {
        return add(mul(p_224031_, add(p_224033_, constant(-p_224032_))), constant(p_224032_));
    }

    record Ap2(
        DensityFunctions.TwoArgumentSimpleFunction.Type type, DensityFunction argument1, DensityFunction argument2, double minValue, double maxValue
    ) implements DensityFunctions.TwoArgumentSimpleFunction {
        @Override
        public double compute(DensityFunction.FunctionContext p_208410_) {
            double d0 = this.argument1.compute(p_208410_);

            return switch (this.type) {
                case ADD -> d0 + this.argument2.compute(p_208410_);
                case MUL -> d0 == 0.0 ? 0.0 : d0 * this.argument2.compute(p_208410_);
                case MIN -> d0 < this.argument2.minValue() ? d0 : Math.min(d0, this.argument2.compute(p_208410_));
                case MAX -> d0 > this.argument2.maxValue() ? d0 : Math.max(d0, this.argument2.compute(p_208410_));
            };
        }

        @Override
        public void fillArray(double[] p_208414_, DensityFunction.ContextProvider p_208415_) {
            this.argument1.fillArray(p_208414_, p_208415_);
            switch (this.type) {
                case ADD:
                    double[] adouble = new double[p_208414_.length];
                    this.argument2.fillArray(adouble, p_208415_);

                    for (int k = 0; k < p_208414_.length; k++) {
                        p_208414_[k] += adouble[k];
                    }
                    break;
                case MUL:
                    for (int j = 0; j < p_208414_.length; j++) {
                        double d1 = p_208414_[j];
                        p_208414_[j] = d1 == 0.0 ? 0.0 : d1 * this.argument2.compute(p_208415_.forIndex(j));
                    }
                    break;
                case MIN:
                    double d3 = this.argument2.minValue();

                    for (int l = 0; l < p_208414_.length; l++) {
                        double d4 = p_208414_[l];
                        p_208414_[l] = d4 < d3 ? d4 : Math.min(d4, this.argument2.compute(p_208415_.forIndex(l)));
                    }
                    break;
                case MAX:
                    double d0 = this.argument2.maxValue();

                    for (int i = 0; i < p_208414_.length; i++) {
                        double d2 = p_208414_[i];
                        p_208414_[i] = d2 > d0 ? d2 : Math.max(d2, this.argument2.compute(p_208415_.forIndex(i)));
                    }
            }
        }

        @Override
        public DensityFunction mapAll(DensityFunction.Visitor p_208412_) {
            return p_208412_.apply(
                DensityFunctions.TwoArgumentSimpleFunction.create(this.type, this.argument1.mapAll(p_208412_), this.argument2.mapAll(p_208412_))
            );
        }

        @Override
        public double minValue() {
            return this.minValue;
        }

        @Override
        public double maxValue() {
            return this.maxValue;
        }

        @Override
        public DensityFunctions.TwoArgumentSimpleFunction.Type type() {
            return this.type;
        }

        @Override
        public DensityFunction argument1() {
            return this.argument1;
        }

        @Override
        public DensityFunction argument2() {
            return this.argument2;
        }
    }

    protected static enum BeardifierMarker implements DensityFunctions.BeardifierOrMarker {
        INSTANCE;

        @Override
        public double compute(DensityFunction.FunctionContext p_208515_) {
            return 0.0;
        }

        @Override
        public void fillArray(double[] p_208517_, DensityFunction.ContextProvider p_208518_) {
            Arrays.fill(p_208517_, 0.0);
        }

        @Override
        public double minValue() {
            return 0.0;
        }

        @Override
        public double maxValue() {
            return 0.0;
        }
    }

    public interface BeardifierOrMarker extends DensityFunction.SimpleFunction {
        KeyDispatchDataCodec<DensityFunction> CODEC = KeyDispatchDataCodec.of(MapCodec.unit(DensityFunctions.BeardifierMarker.INSTANCE));

        @Override
        default KeyDispatchDataCodec<? extends DensityFunction> codec() {
            return CODEC;
        }
    }

    protected static enum BlendAlpha implements DensityFunction.SimpleFunction {
        INSTANCE;

        public static final KeyDispatchDataCodec<DensityFunction> CODEC = KeyDispatchDataCodec.of(MapCodec.unit(INSTANCE));

        @Override
        public double compute(DensityFunction.FunctionContext p_208536_) {
            return 1.0;
        }

        @Override
        public void fillArray(double[] p_208538_, DensityFunction.ContextProvider p_208539_) {
            Arrays.fill(p_208538_, 1.0);
        }

        @Override
        public double minValue() {
            return 1.0;
        }

        @Override
        public double maxValue() {
            return 1.0;
        }

        @Override
        public KeyDispatchDataCodec<? extends DensityFunction> codec() {
            return CODEC;
        }
    }

    record BlendDensity(DensityFunction input) implements DensityFunctions.TransformerWithContext {
        static final KeyDispatchDataCodec<DensityFunctions.BlendDensity> CODEC = DensityFunctions.singleFunctionArgumentCodec(
            DensityFunctions.BlendDensity::new, DensityFunctions.BlendDensity::input
        );

        @Override
        public double transform(DensityFunction.FunctionContext p_208553_, double p_208554_) {
            return p_208553_.getBlender().blendDensity(p_208553_, p_208554_);
        }

        @Override
        public DensityFunction mapAll(DensityFunction.Visitor p_208556_) {
            return p_208556_.apply(new DensityFunctions.BlendDensity(this.input.mapAll(p_208556_)));
        }

        @Override
        public double minValue() {
            return Double.NEGATIVE_INFINITY;
        }

        @Override
        public double maxValue() {
            return Double.POSITIVE_INFINITY;
        }

        @Override
        public KeyDispatchDataCodec<? extends DensityFunction> codec() {
            return CODEC;
        }

        @Override
        public DensityFunction input() {
            return this.input;
        }
    }

    protected static enum BlendOffset implements DensityFunction.SimpleFunction {
        INSTANCE;

        public static final KeyDispatchDataCodec<DensityFunction> CODEC = KeyDispatchDataCodec.of(MapCodec.unit(INSTANCE));

        @Override
        public double compute(DensityFunction.FunctionContext p_208573_) {
            return 0.0;
        }

        @Override
        public void fillArray(double[] p_208575_, DensityFunction.ContextProvider p_208576_) {
            Arrays.fill(p_208575_, 0.0);
        }

        @Override
        public double minValue() {
            return 0.0;
        }

        @Override
        public double maxValue() {
            return 0.0;
        }

        @Override
        public KeyDispatchDataCodec<? extends DensityFunction> codec() {
            return CODEC;
        }
    }

    protected record Clamp(DensityFunction input, double minValue, double maxValue) implements DensityFunctions.PureTransformer {
        private static final MapCodec<DensityFunctions.Clamp> DATA_CODEC = RecordCodecBuilder.mapCodec(
            p_208597_ -> p_208597_.group(
                    DensityFunction.DIRECT_CODEC.fieldOf("input").forGetter(DensityFunctions.Clamp::input),
                    DensityFunctions.NOISE_VALUE_CODEC.fieldOf("min").forGetter(DensityFunctions.Clamp::minValue),
                    DensityFunctions.NOISE_VALUE_CODEC.fieldOf("max").forGetter(DensityFunctions.Clamp::maxValue)
                )
                .apply(p_208597_, DensityFunctions.Clamp::new)
        );
        public static final KeyDispatchDataCodec<DensityFunctions.Clamp> CODEC = DensityFunctions.makeCodec(DATA_CODEC);

        @Override
        public double transform(double p_208595_) {
            return Mth.clamp(p_208595_, this.minValue, this.maxValue);
        }

        @Override
        public DensityFunction mapAll(DensityFunction.Visitor p_208599_) {
            return new DensityFunctions.Clamp(this.input.mapAll(p_208599_), this.minValue, this.maxValue);
        }

        @Override
        public KeyDispatchDataCodec<? extends DensityFunction> codec() {
            return CODEC;
        }

        @Override
        public DensityFunction input() {
            return this.input;
        }

        @Override
        public double minValue() {
            return this.minValue;
        }

        @Override
        public double maxValue() {
            return this.maxValue;
        }
    }

    record Constant(double value) implements DensityFunction.SimpleFunction {
        static final KeyDispatchDataCodec<DensityFunctions.Constant> CODEC = DensityFunctions.singleArgumentCodec(
            DensityFunctions.NOISE_VALUE_CODEC, DensityFunctions.Constant::new, DensityFunctions.Constant::value
        );
        static final DensityFunctions.Constant ZERO = new DensityFunctions.Constant(0.0);

        @Override
        public double compute(DensityFunction.FunctionContext p_208615_) {
            return this.value;
        }

        @Override
        public void fillArray(double[] p_208617_, DensityFunction.ContextProvider p_208618_) {
            Arrays.fill(p_208617_, this.value);
        }

        @Override
        public double minValue() {
            return this.value;
        }

        @Override
        public double maxValue() {
            return this.value;
        }

        @Override
        public KeyDispatchDataCodec<? extends DensityFunction> codec() {
            return CODEC;
        }
    }

    protected static final class EndIslandDensityFunction implements DensityFunction.SimpleFunction {
        public static final KeyDispatchDataCodec<DensityFunctions.EndIslandDensityFunction> CODEC = KeyDispatchDataCodec.of(
            MapCodec.unit(new DensityFunctions.EndIslandDensityFunction(0L))
        );
        private static final float ISLAND_THRESHOLD = -0.9F;
        private final SimplexNoise islandNoise;

        public EndIslandDensityFunction(long p_208630_) {
            RandomSource randomsource = new LegacyRandomSource(p_208630_);
            randomsource.consumeCount(17292);
            this.islandNoise = new SimplexNoise(randomsource);
        }

        private static float getHeightValue(SimplexNoise p_224063_, int p_224064_, int p_224065_) {
            int i = p_224064_ / 2;
            int j = p_224065_ / 2;
            int k = p_224064_ % 2;
            int l = p_224065_ % 2;
            float f = 100.0F - Mth.sqrt(p_224064_ * p_224064_ + p_224065_ * p_224065_) * 8.0F;
            f = Mth.clamp(f, -100.0F, 80.0F);

            for (int i1 = -12; i1 <= 12; i1++) {
                for (int j1 = -12; j1 <= 12; j1++) {
                    long k1 = i + i1;
                    long l1 = j + j1;
                    if (k1 * k1 + l1 * l1 > 4096L && p_224063_.getValue(k1, l1) < -0.9F) {
                        float f1 = (Mth.abs((float)k1) * 3439.0F + Mth.abs((float)l1) * 147.0F) % 13.0F + 9.0F;
                        float f2 = k - i1 * 2;
                        float f3 = l - j1 * 2;
                        float f4 = 100.0F - Mth.sqrt(f2 * f2 + f3 * f3) * f1;
                        f4 = Mth.clamp(f4, -100.0F, 80.0F);
                        f = Math.max(f, f4);
                    }
                }
            }

            return f;
        }

        @Override
        public double compute(DensityFunction.FunctionContext p_208633_) {
            return (getHeightValue(this.islandNoise, p_208633_.blockX() / 8, p_208633_.blockZ() / 8) - 8.0) / 128.0;
        }

        @Override
        public double minValue() {
            return -0.84375;
        }

        @Override
        public double maxValue() {
            return 0.5625;
        }

        @Override
        public KeyDispatchDataCodec<? extends DensityFunction> codec() {
            return CODEC;
        }
    }

    @VisibleForDebug
    public record HolderHolder(Holder<DensityFunction> function) implements DensityFunction {
        @Override
        public double compute(DensityFunction.FunctionContext p_208641_) {
            return this.function.value().compute(p_208641_);
        }

        @Override
        public void fillArray(double[] p_208645_, DensityFunction.ContextProvider p_208646_) {
            this.function.value().fillArray(p_208645_, p_208646_);
        }

        @Override
        public DensityFunction mapAll(DensityFunction.Visitor p_208643_) {
            return p_208643_.apply(new DensityFunctions.HolderHolder(new Holder.Direct<>(this.function.value().mapAll(p_208643_))));
        }

        @Override
        public double minValue() {
            return this.function.isBound() ? this.function.value().minValue() : Double.NEGATIVE_INFINITY;
        }

        @Override
        public double maxValue() {
            return this.function.isBound() ? this.function.value().maxValue() : Double.POSITIVE_INFINITY;
        }

        @Override
        public KeyDispatchDataCodec<? extends DensityFunction> codec() {
            throw new UnsupportedOperationException("Calling .codec() on HolderHolder");
        }
    }

    protected record Mapped(DensityFunctions.Mapped.Type type, DensityFunction input, double minValue, double maxValue)
        implements DensityFunctions.PureTransformer {
        public static DensityFunctions.Mapped create(DensityFunctions.Mapped.Type p_208672_, DensityFunction p_208673_) {
            double d0 = p_208673_.minValue();
            double d1 = transform(p_208672_, d0);
            double d2 = transform(p_208672_, p_208673_.maxValue());
            return p_208672_ != DensityFunctions.Mapped.Type.ABS && p_208672_ != DensityFunctions.Mapped.Type.SQUARE
                ? new DensityFunctions.Mapped(p_208672_, p_208673_, d1, d2)
                : new DensityFunctions.Mapped(p_208672_, p_208673_, Math.max(0.0, d0), Math.max(d1, d2));
        }

        private static double transform(DensityFunctions.Mapped.Type p_208669_, double p_208670_) {
            return switch (p_208669_) {
                case ABS -> Math.abs(p_208670_);
                case SQUARE -> p_208670_ * p_208670_;
                case CUBE -> p_208670_ * p_208670_ * p_208670_;
                case HALF_NEGATIVE -> p_208670_ > 0.0 ? p_208670_ : p_208670_ * 0.5;
                case QUARTER_NEGATIVE -> p_208670_ > 0.0 ? p_208670_ : p_208670_ * 0.25;
                case SQUEEZE -> {
                    double d0 = Mth.clamp(p_208670_, -1.0, 1.0);
                    yield d0 / 2.0 - d0 * d0 * d0 / 24.0;
                }
            };
        }

        @Override
        public double transform(double p_208665_) {
            return transform(this.type, p_208665_);
        }

        public DensityFunctions.Mapped mapAll(DensityFunction.Visitor p_208677_) {
            return create(this.type, this.input.mapAll(p_208677_));
        }

        @Override
        public KeyDispatchDataCodec<? extends DensityFunction> codec() {
            return this.type.codec;
        }

        @Override
        public DensityFunction input() {
            return this.input;
        }

        @Override
        public double minValue() {
            return this.minValue;
        }

        @Override
        public double maxValue() {
            return this.maxValue;
        }

        static enum Type implements StringRepresentable {
            ABS("abs"),
            SQUARE("square"),
            CUBE("cube"),
            HALF_NEGATIVE("half_negative"),
            QUARTER_NEGATIVE("quarter_negative"),
            SQUEEZE("squeeze");

            private final String name;
            final KeyDispatchDataCodec<DensityFunctions.Mapped> codec = DensityFunctions.singleFunctionArgumentCodec(
                p_208700_ -> DensityFunctions.Mapped.create(this, p_208700_), DensityFunctions.Mapped::input
            );

            private Type(final String p_208697_) {
                this.name = p_208697_;
            }

            @Override
            public String getSerializedName() {
                return this.name;
            }
        }
    }

    protected record Marker(DensityFunctions.Marker.Type type, DensityFunction wrapped) implements DensityFunctions.MarkerOrMarked {
        @Override
        public double compute(DensityFunction.FunctionContext p_208712_) {
            return this.wrapped.compute(p_208712_);
        }

        @Override
        public void fillArray(double[] p_208716_, DensityFunction.ContextProvider p_208717_) {
            this.wrapped.fillArray(p_208716_, p_208717_);
        }

        @Override
        public double minValue() {
            return this.wrapped.minValue();
        }

        @Override
        public double maxValue() {
            return this.wrapped.maxValue();
        }

        @Override
        public DensityFunctions.Marker.Type type() {
            return this.type;
        }

        @Override
        public DensityFunction wrapped() {
            return this.wrapped;
        }

        static enum Type implements StringRepresentable {
            Interpolated("interpolated"),
            FlatCache("flat_cache"),
            Cache2D("cache_2d"),
            CacheOnce("cache_once"),
            CacheAllInCell("cache_all_in_cell");

            private final String name;
            final KeyDispatchDataCodec<DensityFunctions.MarkerOrMarked> codec = DensityFunctions.singleFunctionArgumentCodec(
                p_208740_ -> new DensityFunctions.Marker(this, p_208740_), DensityFunctions.MarkerOrMarked::wrapped
            );

            private Type(final String p_208737_) {
                this.name = p_208737_;
            }

            @Override
            public String getSerializedName() {
                return this.name;
            }
        }
    }

    public interface MarkerOrMarked extends DensityFunction {
        DensityFunctions.Marker.Type type();

        DensityFunction wrapped();

        @Override
        default KeyDispatchDataCodec<? extends DensityFunction> codec() {
            return this.type().codec;
        }

        @Override
        default DensityFunction mapAll(DensityFunction.Visitor p_224070_) {
            return p_224070_.apply(new DensityFunctions.Marker(this.type(), this.wrapped().mapAll(p_224070_)));
        }
    }

    record MulOrAdd(DensityFunctions.MulOrAdd.Type specificType, DensityFunction input, double minValue, double maxValue, double argument)
        implements DensityFunctions.PureTransformer,
        DensityFunctions.TwoArgumentSimpleFunction {
        @Override
        public DensityFunctions.TwoArgumentSimpleFunction.Type type() {
            return this.specificType == DensityFunctions.MulOrAdd.Type.MUL
                ? DensityFunctions.TwoArgumentSimpleFunction.Type.MUL
                : DensityFunctions.TwoArgumentSimpleFunction.Type.ADD;
        }

        @Override
        public DensityFunction argument1() {
            return DensityFunctions.constant(this.argument);
        }

        @Override
        public DensityFunction argument2() {
            return this.input;
        }

        @Override
        public double transform(double p_208759_) {
            return switch (this.specificType) {
                case MUL -> p_208759_ * this.argument;
                case ADD -> p_208759_ + this.argument;
            };
        }

        @Override
        public DensityFunction mapAll(DensityFunction.Visitor p_208761_) {
            DensityFunction densityfunction = this.input.mapAll(p_208761_);
            double d0 = densityfunction.minValue();
            double d1 = densityfunction.maxValue();
            double d2;
            double d3;
            if (this.specificType == DensityFunctions.MulOrAdd.Type.ADD) {
                d2 = d0 + this.argument;
                d3 = d1 + this.argument;
            } else if (this.argument >= 0.0) {
                d2 = d0 * this.argument;
                d3 = d1 * this.argument;
            } else {
                d2 = d1 * this.argument;
                d3 = d0 * this.argument;
            }

            return new DensityFunctions.MulOrAdd(this.specificType, densityfunction, d2, d3, this.argument);
        }

        @Override
        public DensityFunction input() {
            return this.input;
        }

        @Override
        public double minValue() {
            return this.minValue;
        }

        @Override
        public double maxValue() {
            return this.maxValue;
        }

        static enum Type {
            MUL,
            ADD;
        }
    }

    protected record Noise(DensityFunction.NoiseHolder noise, @Deprecated double xzScale, double yScale) implements DensityFunction {
        public static final MapCodec<DensityFunctions.Noise> DATA_CODEC = RecordCodecBuilder.mapCodec(
            p_208798_ -> p_208798_.group(
                    DensityFunction.NoiseHolder.CODEC.fieldOf("noise").forGetter(DensityFunctions.Noise::noise),
                    Codec.DOUBLE.fieldOf("xz_scale").forGetter(DensityFunctions.Noise::xzScale),
                    Codec.DOUBLE.fieldOf("y_scale").forGetter(DensityFunctions.Noise::yScale)
                )
                .apply(p_208798_, DensityFunctions.Noise::new)
        );
        public static final KeyDispatchDataCodec<DensityFunctions.Noise> CODEC = DensityFunctions.makeCodec(DATA_CODEC);

        @Override
        public double compute(DensityFunction.FunctionContext p_208800_) {
            return this.noise
                .getValue(p_208800_.blockX() * this.xzScale, p_208800_.blockY() * this.yScale, p_208800_.blockZ() * this.xzScale);
        }

        @Override
        public void fillArray(double[] p_224079_, DensityFunction.ContextProvider p_224080_) {
            p_224080_.fillAllDirectly(p_224079_, this);
        }

        @Override
        public DensityFunction mapAll(DensityFunction.Visitor p_224077_) {
            return p_224077_.apply(new DensityFunctions.Noise(p_224077_.visitNoise(this.noise), this.xzScale, this.yScale));
        }

        @Override
        public double minValue() {
            return -this.maxValue();
        }

        @Override
        public double maxValue() {
            return this.noise.maxValue();
        }

        @Override
        public KeyDispatchDataCodec<? extends DensityFunction> codec() {
            return CODEC;
        }
    }

    interface PureTransformer extends DensityFunction {
        DensityFunction input();

        @Override
        default double compute(DensityFunction.FunctionContext p_208817_) {
            return this.transform(this.input().compute(p_208817_));
        }

        @Override
        default void fillArray(double[] p_208819_, DensityFunction.ContextProvider p_208820_) {
            this.input().fillArray(p_208819_, p_208820_);

            for (int i = 0; i < p_208819_.length; i++) {
                p_208819_[i] = this.transform(p_208819_[i]);
            }
        }

        double transform(double p_208815_);
    }

    record RangeChoice(DensityFunction input, double minInclusive, double maxExclusive, DensityFunction whenInRange, DensityFunction whenOutOfRange)
        implements DensityFunction {
        public static final MapCodec<DensityFunctions.RangeChoice> DATA_CODEC = RecordCodecBuilder.mapCodec(
            p_208837_ -> p_208837_.group(
                    DensityFunction.HOLDER_HELPER_CODEC.fieldOf("input").forGetter(DensityFunctions.RangeChoice::input),
                    DensityFunctions.NOISE_VALUE_CODEC.fieldOf("min_inclusive").forGetter(DensityFunctions.RangeChoice::minInclusive),
                    DensityFunctions.NOISE_VALUE_CODEC.fieldOf("max_exclusive").forGetter(DensityFunctions.RangeChoice::maxExclusive),
                    DensityFunction.HOLDER_HELPER_CODEC.fieldOf("when_in_range").forGetter(DensityFunctions.RangeChoice::whenInRange),
                    DensityFunction.HOLDER_HELPER_CODEC.fieldOf("when_out_of_range").forGetter(DensityFunctions.RangeChoice::whenOutOfRange)
                )
                .apply(p_208837_, DensityFunctions.RangeChoice::new)
        );
        public static final KeyDispatchDataCodec<DensityFunctions.RangeChoice> CODEC = DensityFunctions.makeCodec(DATA_CODEC);

        @Override
        public double compute(DensityFunction.FunctionContext p_208839_) {
            double d0 = this.input.compute(p_208839_);
            return d0 >= this.minInclusive && d0 < this.maxExclusive ? this.whenInRange.compute(p_208839_) : this.whenOutOfRange.compute(p_208839_);
        }

        @Override
        public void fillArray(double[] p_208843_, DensityFunction.ContextProvider p_208844_) {
            this.input.fillArray(p_208843_, p_208844_);

            for (int i = 0; i < p_208843_.length; i++) {
                double d0 = p_208843_[i];
                if (d0 >= this.minInclusive && d0 < this.maxExclusive) {
                    p_208843_[i] = this.whenInRange.compute(p_208844_.forIndex(i));
                } else {
                    p_208843_[i] = this.whenOutOfRange.compute(p_208844_.forIndex(i));
                }
            }
        }

        @Override
        public DensityFunction mapAll(DensityFunction.Visitor p_208841_) {
            return p_208841_.apply(
                new DensityFunctions.RangeChoice(
                    this.input.mapAll(p_208841_),
                    this.minInclusive,
                    this.maxExclusive,
                    this.whenInRange.mapAll(p_208841_),
                    this.whenOutOfRange.mapAll(p_208841_)
                )
            );
        }

        @Override
        public double minValue() {
            return Math.min(this.whenInRange.minValue(), this.whenOutOfRange.minValue());
        }

        @Override
        public double maxValue() {
            return Math.max(this.whenInRange.maxValue(), this.whenOutOfRange.maxValue());
        }

        @Override
        public KeyDispatchDataCodec<? extends DensityFunction> codec() {
            return CODEC;
        }
    }

    protected record Shift(DensityFunction.NoiseHolder offsetNoise) implements DensityFunctions.ShiftNoise {
        static final KeyDispatchDataCodec<DensityFunctions.Shift> CODEC = DensityFunctions.singleArgumentCodec(
            DensityFunction.NoiseHolder.CODEC, DensityFunctions.Shift::new, DensityFunctions.Shift::offsetNoise
        );

        @Override
        public double compute(DensityFunction.FunctionContext p_208864_) {
            return this.compute(p_208864_.blockX(), p_208864_.blockY(), p_208864_.blockZ());
        }

        @Override
        public DensityFunction mapAll(DensityFunction.Visitor p_224087_) {
            return p_224087_.apply(new DensityFunctions.Shift(p_224087_.visitNoise(this.offsetNoise)));
        }

        @Override
        public KeyDispatchDataCodec<? extends DensityFunction> codec() {
            return CODEC;
        }

        @Override
        public DensityFunction.NoiseHolder offsetNoise() {
            return this.offsetNoise;
        }
    }

    protected record ShiftA(DensityFunction.NoiseHolder offsetNoise) implements DensityFunctions.ShiftNoise {
        static final KeyDispatchDataCodec<DensityFunctions.ShiftA> CODEC = DensityFunctions.singleArgumentCodec(
            DensityFunction.NoiseHolder.CODEC, DensityFunctions.ShiftA::new, DensityFunctions.ShiftA::offsetNoise
        );

        @Override
        public double compute(DensityFunction.FunctionContext p_208884_) {
            return this.compute(p_208884_.blockX(), 0.0, p_208884_.blockZ());
        }

        @Override
        public DensityFunction mapAll(DensityFunction.Visitor p_224093_) {
            return p_224093_.apply(new DensityFunctions.ShiftA(p_224093_.visitNoise(this.offsetNoise)));
        }

        @Override
        public KeyDispatchDataCodec<? extends DensityFunction> codec() {
            return CODEC;
        }

        @Override
        public DensityFunction.NoiseHolder offsetNoise() {
            return this.offsetNoise;
        }
    }

    protected record ShiftB(DensityFunction.NoiseHolder offsetNoise) implements DensityFunctions.ShiftNoise {
        static final KeyDispatchDataCodec<DensityFunctions.ShiftB> CODEC = DensityFunctions.singleArgumentCodec(
            DensityFunction.NoiseHolder.CODEC, DensityFunctions.ShiftB::new, DensityFunctions.ShiftB::offsetNoise
        );

        @Override
        public double compute(DensityFunction.FunctionContext p_208904_) {
            return this.compute(p_208904_.blockZ(), p_208904_.blockX(), 0.0);
        }

        @Override
        public DensityFunction mapAll(DensityFunction.Visitor p_224099_) {
            return p_224099_.apply(new DensityFunctions.ShiftB(p_224099_.visitNoise(this.offsetNoise)));
        }

        @Override
        public KeyDispatchDataCodec<? extends DensityFunction> codec() {
            return CODEC;
        }

        @Override
        public DensityFunction.NoiseHolder offsetNoise() {
            return this.offsetNoise;
        }
    }

    interface ShiftNoise extends DensityFunction {
        DensityFunction.NoiseHolder offsetNoise();

        @Override
        default double minValue() {
            return -this.maxValue();
        }

        @Override
        default double maxValue() {
            return this.offsetNoise().maxValue() * 4.0;
        }

        default double compute(double p_208918_, double p_208919_, double p_208920_) {
            return this.offsetNoise().getValue(p_208918_ * 0.25, p_208919_ * 0.25, p_208920_ * 0.25) * 4.0;
        }

        @Override
        default void fillArray(double[] p_224103_, DensityFunction.ContextProvider p_224104_) {
            p_224104_.fillAllDirectly(p_224103_, this);
        }
    }

    protected record ShiftedNoise(
        DensityFunction shiftX,
        DensityFunction shiftY,
        DensityFunction shiftZ,
        double xzScale,
        double yScale,
        DensityFunction.NoiseHolder noise
    ) implements DensityFunction {
        private static final MapCodec<DensityFunctions.ShiftedNoise> DATA_CODEC = RecordCodecBuilder.mapCodec(
            p_208943_ -> p_208943_.group(
                    DensityFunction.HOLDER_HELPER_CODEC.fieldOf("shift_x").forGetter(DensityFunctions.ShiftedNoise::shiftX),
                    DensityFunction.HOLDER_HELPER_CODEC.fieldOf("shift_y").forGetter(DensityFunctions.ShiftedNoise::shiftY),
                    DensityFunction.HOLDER_HELPER_CODEC.fieldOf("shift_z").forGetter(DensityFunctions.ShiftedNoise::shiftZ),
                    Codec.DOUBLE.fieldOf("xz_scale").forGetter(DensityFunctions.ShiftedNoise::xzScale),
                    Codec.DOUBLE.fieldOf("y_scale").forGetter(DensityFunctions.ShiftedNoise::yScale),
                    DensityFunction.NoiseHolder.CODEC.fieldOf("noise").forGetter(DensityFunctions.ShiftedNoise::noise)
                )
                .apply(p_208943_, DensityFunctions.ShiftedNoise::new)
        );
        public static final KeyDispatchDataCodec<DensityFunctions.ShiftedNoise> CODEC = DensityFunctions.makeCodec(DATA_CODEC);

        @Override
        public double compute(DensityFunction.FunctionContext p_208945_) {
            double d0 = p_208945_.blockX() * this.xzScale + this.shiftX.compute(p_208945_);
            double d1 = p_208945_.blockY() * this.yScale + this.shiftY.compute(p_208945_);
            double d2 = p_208945_.blockZ() * this.xzScale + this.shiftZ.compute(p_208945_);
            return this.noise.getValue(d0, d1, d2);
        }

        @Override
        public void fillArray(double[] p_208956_, DensityFunction.ContextProvider p_208957_) {
            p_208957_.fillAllDirectly(p_208956_, this);
        }

        @Override
        public DensityFunction mapAll(DensityFunction.Visitor p_208947_) {
            return p_208947_.apply(
                new DensityFunctions.ShiftedNoise(
                    this.shiftX.mapAll(p_208947_),
                    this.shiftY.mapAll(p_208947_),
                    this.shiftZ.mapAll(p_208947_),
                    this.xzScale,
                    this.yScale,
                    p_208947_.visitNoise(this.noise)
                )
            );
        }

        @Override
        public double minValue() {
            return -this.maxValue();
        }

        @Override
        public double maxValue() {
            return this.noise.maxValue();
        }

        @Override
        public KeyDispatchDataCodec<? extends DensityFunction> codec() {
            return CODEC;
        }
    }

    public record Spline(CubicSpline<DensityFunctions.Spline.Point, DensityFunctions.Spline.Coordinate> spline) implements DensityFunction {
        private static final Codec<CubicSpline<DensityFunctions.Spline.Point, DensityFunctions.Spline.Coordinate>> SPLINE_CODEC = CubicSpline.codec(
            DensityFunctions.Spline.Coordinate.CODEC
        );
        private static final MapCodec<DensityFunctions.Spline> DATA_CODEC = SPLINE_CODEC.fieldOf("spline")
            .xmap(DensityFunctions.Spline::new, DensityFunctions.Spline::spline);
        public static final KeyDispatchDataCodec<DensityFunctions.Spline> CODEC = DensityFunctions.makeCodec(DATA_CODEC);

        @Override
        public double compute(DensityFunction.FunctionContext p_211715_) {
            return this.spline.apply(new DensityFunctions.Spline.Point(p_211715_));
        }

        @Override
        public double minValue() {
            return this.spline.minValue();
        }

        @Override
        public double maxValue() {
            return this.spline.maxValue();
        }

        @Override
        public void fillArray(double[] p_211722_, DensityFunction.ContextProvider p_211723_) {
            p_211723_.fillAllDirectly(p_211722_, this);
        }

        @Override
        public DensityFunction mapAll(DensityFunction.Visitor p_211717_) {
            return p_211717_.apply(new DensityFunctions.Spline(this.spline.mapAll(p_224119_ -> p_224119_.mapAll(p_211717_))));
        }

        @Override
        public KeyDispatchDataCodec<? extends DensityFunction> codec() {
            return CODEC;
        }

        public record Coordinate(Holder<DensityFunction> function) implements ToFloatFunction<DensityFunctions.Spline.Point> {
            public static final Codec<DensityFunctions.Spline.Coordinate> CODEC = DensityFunction.CODEC
                .xmap(DensityFunctions.Spline.Coordinate::new, DensityFunctions.Spline.Coordinate::function);

            @Override
            public String toString() {
                Optional<ResourceKey<DensityFunction>> optional = this.function.unwrapKey();
                if (optional.isPresent()) {
                    ResourceKey<DensityFunction> resourcekey = optional.get();
                    if (resourcekey == NoiseRouterData.CONTINENTS) {
                        return "continents";
                    }

                    if (resourcekey == NoiseRouterData.EROSION) {
                        return "erosion";
                    }

                    if (resourcekey == NoiseRouterData.RIDGES) {
                        return "weirdness";
                    }

                    if (resourcekey == NoiseRouterData.RIDGES_FOLDED) {
                        return "ridges";
                    }
                }

                return "Coordinate[" + this.function + "]";
            }

            public float apply(DensityFunctions.Spline.Point p_224130_) {
                return (float)this.function.value().compute(p_224130_.context());
            }

            @Override
            public float minValue() {
                return this.function.isBound() ? (float)this.function.value().minValue() : Float.NEGATIVE_INFINITY;
            }

            @Override
            public float maxValue() {
                return this.function.isBound() ? (float)this.function.value().maxValue() : Float.POSITIVE_INFINITY;
            }

            public DensityFunctions.Spline.Coordinate mapAll(DensityFunction.Visitor p_224128_) {
                return new DensityFunctions.Spline.Coordinate(new Holder.Direct<>(this.function.value().mapAll(p_224128_)));
            }
        }

        public record Point(DensityFunction.FunctionContext context) {
        }
    }

    interface TransformerWithContext extends DensityFunction {
        DensityFunction input();

        @Override
        default double compute(DensityFunction.FunctionContext p_209065_) {
            return this.transform(p_209065_, this.input().compute(p_209065_));
        }

        @Override
        default void fillArray(double[] p_209069_, DensityFunction.ContextProvider p_209070_) {
            this.input().fillArray(p_209069_, p_209070_);

            for (int i = 0; i < p_209069_.length; i++) {
                p_209069_[i] = this.transform(p_209070_.forIndex(i), p_209069_[i]);
            }
        }

        double transform(DensityFunction.FunctionContext p_209066_, double p_209067_);
    }

    interface TwoArgumentSimpleFunction extends DensityFunction {
        Logger LOGGER = LogUtils.getLogger();

        static DensityFunctions.TwoArgumentSimpleFunction create(
            DensityFunctions.TwoArgumentSimpleFunction.Type p_209074_, DensityFunction p_209075_, DensityFunction p_209076_
        ) {
            double d0 = p_209075_.minValue();
            double d1 = p_209076_.minValue();
            double d2 = p_209075_.maxValue();
            double d3 = p_209076_.maxValue();
            if (p_209074_ == DensityFunctions.TwoArgumentSimpleFunction.Type.MIN || p_209074_ == DensityFunctions.TwoArgumentSimpleFunction.Type.MAX) {
                boolean flag = d0 >= d3;
                boolean flag1 = d1 >= d2;
                if (flag || flag1) {
                    LOGGER.warn("Creating a " + p_209074_ + " function between two non-overlapping inputs: " + p_209075_ + " and " + p_209076_);
                }
            }
            double d5 = switch (p_209074_) {
                case ADD -> d0 + d1;
                case MUL -> d0 > 0.0 && d1 > 0.0 ? d0 * d1 : (d2 < 0.0 && d3 < 0.0 ? d2 * d3 : Math.min(d0 * d3, d2 * d1));
                case MIN -> Math.min(d0, d1);
                case MAX -> Math.max(d0, d1);
            };

            double d4 = switch (p_209074_) {
                case ADD -> d2 + d3;
                case MUL -> d0 > 0.0 && d1 > 0.0 ? d2 * d3 : (d2 < 0.0 && d3 < 0.0 ? d0 * d1 : Math.max(d0 * d1, d2 * d3));
                case MIN -> Math.min(d2, d3);
                case MAX -> Math.max(d2, d3);
            };
            if (p_209074_ == DensityFunctions.TwoArgumentSimpleFunction.Type.MUL || p_209074_ == DensityFunctions.TwoArgumentSimpleFunction.Type.ADD) {
                if (p_209075_ instanceof DensityFunctions.Constant densityfunctions$constant1) {
                    return new DensityFunctions.MulOrAdd(
                        p_209074_ == DensityFunctions.TwoArgumentSimpleFunction.Type.ADD
                            ? DensityFunctions.MulOrAdd.Type.ADD
                            : DensityFunctions.MulOrAdd.Type.MUL,
                        p_209076_,
                        d5,
                        d4,
                        densityfunctions$constant1.value
                    );
                }

                if (p_209076_ instanceof DensityFunctions.Constant densityfunctions$constant) {
                    return new DensityFunctions.MulOrAdd(
                        p_209074_ == DensityFunctions.TwoArgumentSimpleFunction.Type.ADD
                            ? DensityFunctions.MulOrAdd.Type.ADD
                            : DensityFunctions.MulOrAdd.Type.MUL,
                        p_209075_,
                        d5,
                        d4,
                        densityfunctions$constant.value
                    );
                }
            }

            return new DensityFunctions.Ap2(p_209074_, p_209075_, p_209076_, d5, d4);
        }

        DensityFunctions.TwoArgumentSimpleFunction.Type type();

        DensityFunction argument1();

        DensityFunction argument2();

        @Override
        default KeyDispatchDataCodec<? extends DensityFunction> codec() {
            return this.type().codec;
        }

        public static enum Type implements StringRepresentable {
            ADD("add"),
            MUL("mul"),
            MIN("min"),
            MAX("max");

            final KeyDispatchDataCodec<DensityFunctions.TwoArgumentSimpleFunction> codec = DensityFunctions.doubleFunctionArgumentCodec(
                (p_209092_, p_209093_) -> DensityFunctions.TwoArgumentSimpleFunction.create(this, p_209092_, p_209093_),
                DensityFunctions.TwoArgumentSimpleFunction::argument1,
                DensityFunctions.TwoArgumentSimpleFunction::argument2
            );
            private final String name;

            private Type(final String p_209089_) {
                this.name = p_209089_;
            }

            @Override
            public String getSerializedName() {
                return this.name;
            }
        }
    }

    protected record WeirdScaledSampler(
        DensityFunction input, DensityFunction.NoiseHolder noise, DensityFunctions.WeirdScaledSampler.RarityValueMapper rarityValueMapper
    ) implements DensityFunctions.TransformerWithContext {
        private static final MapCodec<DensityFunctions.WeirdScaledSampler> DATA_CODEC = RecordCodecBuilder.mapCodec(
            p_208438_ -> p_208438_.group(
                    DensityFunction.HOLDER_HELPER_CODEC.fieldOf("input").forGetter(DensityFunctions.WeirdScaledSampler::input),
                    DensityFunction.NoiseHolder.CODEC.fieldOf("noise").forGetter(DensityFunctions.WeirdScaledSampler::noise),
                    DensityFunctions.WeirdScaledSampler.RarityValueMapper.CODEC
                        .fieldOf("rarity_value_mapper")
                        .forGetter(DensityFunctions.WeirdScaledSampler::rarityValueMapper)
                )
                .apply(p_208438_, DensityFunctions.WeirdScaledSampler::new)
        );
        public static final KeyDispatchDataCodec<DensityFunctions.WeirdScaledSampler> CODEC = DensityFunctions.makeCodec(DATA_CODEC);

        @Override
        public double transform(DensityFunction.FunctionContext p_208440_, double p_208441_) {
            double d0 = this.rarityValueMapper.mapper.get(p_208441_);
            return d0 * Math.abs(this.noise.getValue(p_208440_.blockX() / d0, p_208440_.blockY() / d0, p_208440_.blockZ() / d0));
        }

        @Override
        public DensityFunction mapAll(DensityFunction.Visitor p_208443_) {
            return p_208443_.apply(
                new DensityFunctions.WeirdScaledSampler(this.input.mapAll(p_208443_), p_208443_.visitNoise(this.noise), this.rarityValueMapper)
            );
        }

        @Override
        public double minValue() {
            return 0.0;
        }

        @Override
        public double maxValue() {
            return this.rarityValueMapper.maxRarity * this.noise.maxValue();
        }

        @Override
        public KeyDispatchDataCodec<? extends DensityFunction> codec() {
            return CODEC;
        }

        @Override
        public DensityFunction input() {
            return this.input;
        }

        public static enum RarityValueMapper implements StringRepresentable {
            TYPE1("type_1", NoiseRouterData.QuantizedSpaghettiRarity::getSpaghettiRarity3D, 2.0),
            TYPE2("type_2", NoiseRouterData.QuantizedSpaghettiRarity::getSphaghettiRarity2D, 3.0);

            public static final Codec<DensityFunctions.WeirdScaledSampler.RarityValueMapper> CODEC = StringRepresentable.fromEnum(
                DensityFunctions.WeirdScaledSampler.RarityValueMapper::values
            );
            private final String name;
            final Double2DoubleFunction mapper;
            final double maxRarity;

            private RarityValueMapper(final String p_208470_, final Double2DoubleFunction p_208471_, final double p_208472_) {
                this.name = p_208470_;
                this.mapper = p_208471_;
                this.maxRarity = p_208472_;
            }

            @Override
            public String getSerializedName() {
                return this.name;
            }
        }
    }

    record YClampedGradient(int fromY, int toY, double fromValue, double toValue) implements DensityFunction.SimpleFunction {
        private static final MapCodec<DensityFunctions.YClampedGradient> DATA_CODEC = RecordCodecBuilder.mapCodec(
            p_208494_ -> p_208494_.group(
                    Codec.intRange(DimensionType.MIN_Y * 2, DimensionType.MAX_Y * 2)
                        .fieldOf("from_y")
                        .forGetter(DensityFunctions.YClampedGradient::fromY),
                    Codec.intRange(DimensionType.MIN_Y * 2, DimensionType.MAX_Y * 2)
                        .fieldOf("to_y")
                        .forGetter(DensityFunctions.YClampedGradient::toY),
                    DensityFunctions.NOISE_VALUE_CODEC.fieldOf("from_value").forGetter(DensityFunctions.YClampedGradient::fromValue),
                    DensityFunctions.NOISE_VALUE_CODEC.fieldOf("to_value").forGetter(DensityFunctions.YClampedGradient::toValue)
                )
                .apply(p_208494_, DensityFunctions.YClampedGradient::new)
        );
        public static final KeyDispatchDataCodec<DensityFunctions.YClampedGradient> CODEC = DensityFunctions.makeCodec(DATA_CODEC);

        @Override
        public double compute(DensityFunction.FunctionContext p_208496_) {
            return Mth.clampedMap(p_208496_.blockY(), this.fromY, this.toY, this.fromValue, this.toValue);
        }

        @Override
        public double minValue() {
            return Math.min(this.fromValue, this.toValue);
        }

        @Override
        public double maxValue() {
            return Math.max(this.fromValue, this.toValue);
        }

        @Override
        public KeyDispatchDataCodec<? extends DensityFunction> codec() {
            return CODEC;
        }
    }
}