59 lines
2 KiB
Java
59 lines
2 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.MapCodec;
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import com.mojang.serialization.codecs.RecordCodecBuilder;
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import it.unimi.dsi.fastutil.longs.LongOpenHashSet;
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import it.unimi.dsi.fastutil.longs.LongSet;
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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 UniformHeight extends HeightProvider {
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public static final MapCodec<UniformHeight> CODEC = RecordCodecBuilder.mapCodec(
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instance -> instance.group(
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VerticalAnchor.CODEC.fieldOf("min_inclusive").forGetter(uniformHeight -> uniformHeight.minInclusive),
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VerticalAnchor.CODEC.fieldOf("max_inclusive").forGetter(uniformHeight -> uniformHeight.maxInclusive)
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)
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.apply(instance, UniformHeight::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 LongSet warnedFor = new LongOpenHashSet();
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private UniformHeight(VerticalAnchor minInclusive, VerticalAnchor maxInclusive) {
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this.minInclusive = minInclusive;
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this.maxInclusive = maxInclusive;
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}
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public static UniformHeight of(VerticalAnchor minInclusive, VerticalAnchor maxInclusive) {
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return new UniformHeight(minInclusive, maxInclusive);
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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 (i > j) {
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if (this.warnedFor.add((long)i << 32 | j)) {
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LOGGER.warn("Empty height range: {}", this);
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}
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return i;
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} else {
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return Mth.randomBetweenInclusive(random, i, j);
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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.UNIFORM;
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}
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public String toString() {
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return "[" + this.minInclusive + "-" + this.maxInclusive + "]";
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}
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}
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