38 lines
1.2 KiB
Java
38 lines
1.2 KiB
Java
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package net.minecraft.world.level.levelgen;
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import com.mojang.serialization.Codec;
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import java.util.stream.LongStream;
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import net.minecraft.Util;
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public class Xoroshiro128PlusPlus {
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private long seedLo;
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private long seedHi;
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public static final Codec<Xoroshiro128PlusPlus> CODEC = Codec.LONG_STREAM
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.comapFlatMap(
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p_327461_ -> Util.fixedSize(p_327461_, 2).map(p_287742_ -> new Xoroshiro128PlusPlus(p_287742_[0], p_287742_[1])),
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p_287687_ -> LongStream.of(p_287687_.seedLo, p_287687_.seedHi)
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);
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public Xoroshiro128PlusPlus(RandomSupport.Seed128bit p_190095_) {
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this(p_190095_.seedLo(), p_190095_.seedHi());
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}
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public Xoroshiro128PlusPlus(long p_190092_, long p_190093_) {
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this.seedLo = p_190092_;
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this.seedHi = p_190093_;
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if ((this.seedLo | this.seedHi) == 0L) {
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this.seedLo = -7046029254386353131L;
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this.seedHi = 7640891576956012809L;
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}
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}
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public long nextLong() {
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long i = this.seedLo;
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long j = this.seedHi;
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long k = Long.rotateLeft(i + j, 17) + i;
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j ^= i;
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this.seedLo = Long.rotateLeft(i, 49) ^ j ^ j << 21;
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this.seedHi = Long.rotateLeft(j, 28);
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return k;
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}
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}
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