55 lines
1.9 KiB
Java
55 lines
1.9 KiB
Java
/*
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* Decompiled with CFR 0.152.
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*
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* Could not load the following classes:
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* com.mojang.datafixers.kinds.App
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* com.mojang.datafixers.kinds.Applicative
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* com.mojang.serialization.Codec
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* com.mojang.serialization.codecs.RecordCodecBuilder
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*/
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package net.minecraft.world;
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import com.mojang.datafixers.kinds.App;
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import com.mojang.datafixers.kinds.Applicative;
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import com.mojang.serialization.Codec;
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import com.mojang.serialization.codecs.RecordCodecBuilder;
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import java.util.Optional;
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import net.minecraft.resources.Identifier;
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import net.minecraft.util.RandomSource;
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import net.minecraft.world.level.levelgen.RandomSupport;
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import net.minecraft.world.level.levelgen.XoroshiroRandomSource;
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public class RandomSequence {
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public static final Codec<RandomSequence> CODEC = RecordCodecBuilder.create(i -> i.group((App)XoroshiroRandomSource.CODEC.fieldOf("source").forGetter(r -> r.source)).apply((Applicative)i, RandomSequence::new));
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private final XoroshiroRandomSource source;
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public RandomSequence(XoroshiroRandomSource source) {
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this.source = source;
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}
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public RandomSequence(long seed, Identifier key) {
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this(RandomSequence.createSequence(seed, Optional.of(key)));
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}
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public RandomSequence(long seed, Optional<Identifier> key) {
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this(RandomSequence.createSequence(seed, key));
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}
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private static XoroshiroRandomSource createSequence(long seed, Optional<Identifier> key) {
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RandomSupport.Seed128bit seed128bit = RandomSupport.upgradeSeedTo128bitUnmixed(seed);
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if (key.isPresent()) {
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seed128bit = seed128bit.xor(RandomSequence.seedForKey(key.get()));
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}
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return new XoroshiroRandomSource(seed128bit.mixed());
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}
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public static RandomSupport.Seed128bit seedForKey(Identifier key) {
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return RandomSupport.seedFromHashOf(key.toString());
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}
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public RandomSource random() {
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return this.source;
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}
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}
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