59 lines
2.3 KiB
Java
59 lines
2.3 KiB
Java
package net.minecraft.world.level.levelgen.heightproviders;
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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.MapCodec;
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import com.mojang.serialization.codecs.RecordCodecBuilder;
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import net.minecraft.util.Mth;
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import net.minecraft.util.RandomSource;
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import net.minecraft.world.level.levelgen.VerticalAnchor;
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import net.minecraft.world.level.levelgen.WorldGenerationContext;
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import org.slf4j.Logger;
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public class VeryBiasedToBottomHeight extends HeightProvider {
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public static final MapCodec<VeryBiasedToBottomHeight> CODEC = RecordCodecBuilder.mapCodec(
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instance -> instance.group(
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VerticalAnchor.CODEC.fieldOf("min_inclusive").forGetter(veryBiasedToBottomHeight -> veryBiasedToBottomHeight.minInclusive),
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VerticalAnchor.CODEC.fieldOf("max_inclusive").forGetter(veryBiasedToBottomHeight -> veryBiasedToBottomHeight.maxInclusive),
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Codec.intRange(1, Integer.MAX_VALUE).optionalFieldOf("inner", 1).forGetter(veryBiasedToBottomHeight -> veryBiasedToBottomHeight.inner)
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)
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.apply(instance, VeryBiasedToBottomHeight::new)
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);
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private static final Logger LOGGER = LogUtils.getLogger();
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private final VerticalAnchor minInclusive;
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private final VerticalAnchor maxInclusive;
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private final int inner;
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private VeryBiasedToBottomHeight(VerticalAnchor minInclusive, VerticalAnchor maxInclusive, int inner) {
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this.minInclusive = minInclusive;
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this.maxInclusive = maxInclusive;
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this.inner = inner;
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}
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public static VeryBiasedToBottomHeight of(VerticalAnchor minInclusive, VerticalAnchor maxInclusive, int inner) {
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return new VeryBiasedToBottomHeight(minInclusive, maxInclusive, inner);
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}
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@Override
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public int sample(RandomSource random, WorldGenerationContext context) {
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int i = this.minInclusive.resolveY(context);
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int j = this.maxInclusive.resolveY(context);
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if (j - i - this.inner + 1 <= 0) {
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LOGGER.warn("Empty height range: {}", this);
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return i;
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} else {
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int k = Mth.nextInt(random, i + this.inner, j);
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int l = Mth.nextInt(random, i, k - 1);
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return Mth.nextInt(random, i, l - 1 + this.inner);
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}
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}
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@Override
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public HeightProviderType<?> getType() {
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return HeightProviderType.VERY_BIASED_TO_BOTTOM;
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}
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public String toString() {
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return "biased[" + this.minInclusive + "-" + this.maxInclusive + " inner: " + this.inner + "]";
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}
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}
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