/*
 * Decompiled with CFR 0.152.
 */
package net.minecraft.world.level.levelgen;

import java.util.concurrent.atomic.AtomicLong;
import net.minecraft.util.RandomSource;
import net.minecraft.world.level.levelgen.BitRandomSource;
import net.minecraft.world.level.levelgen.LegacyRandomSource;
import net.minecraft.world.level.levelgen.MarsagliaPolarGaussian;
import net.minecraft.world.level.levelgen.PositionalRandomFactory;

@Deprecated
public class ThreadSafeLegacyRandomSource
implements BitRandomSource {
    private static final int MODULUS_BITS = 48;
    private static final long MODULUS_MASK = 0xFFFFFFFFFFFFL;
    private static final long MULTIPLIER = 25214903917L;
    private static final long INCREMENT = 11L;
    private final AtomicLong seed = new AtomicLong();
    private final MarsagliaPolarGaussian gaussianSource = new MarsagliaPolarGaussian(this);

    public ThreadSafeLegacyRandomSource(long seed) {
        this.setSeed(seed);
    }

    @Override
    public RandomSource fork() {
        return new ThreadSafeLegacyRandomSource(this.nextLong());
    }

    @Override
    public PositionalRandomFactory forkPositional() {
        return new LegacyRandomSource.LegacyPositionalRandomFactory(this.nextLong());
    }

    @Override
    public void setSeed(long seed) {
        this.seed.set((seed ^ 0x5DEECE66DL) & 0xFFFFFFFFFFFFL);
    }

    @Override
    public int next(int bits) {
        long nextSeed;
        long oldSeed;
        while (!this.seed.compareAndSet(oldSeed = this.seed.get(), nextSeed = oldSeed * 25214903917L + 11L & 0xFFFFFFFFFFFFL)) {
        }
        return (int)(nextSeed >>> 48 - bits);
    }

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