DBot/overdrive_that_matters
DBot/overdrive_that_matters
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Provide PCG32 wrapper of RandomSource

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This commit is contained in:
DBotThePony 2025-03-08 17:18:45 +07:00
parent 430bc70c7e
commit 1ca2348adf
Signed by: DBot
GPG Key ID: DCC23B5715498507
3 changed files with 54 additions and 6 deletions
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2
gradle.properties
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@ -22,7 +22,7 @@ mixin_version=0.8.5
neogradle.subsystems.parchment.minecraftVersion=1.21.1
neogradle.subsystems.parchment.mappingsVersion=2024.11.17
kommons_version=3.2.1
kommons_version=3.3.0
caffeine_cache_version=3.1.5
jei_version=19.16.4.171

5
src/main/kotlin/ru/dbotthepony/mc/otm/core/util/LCG64RandomSource.kt
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@ -56,9 +56,4 @@ class LCG64RandomSource(seed: Long = RandomSupport.generateUniqueSeed()) : LCG64
throw UnsupportedOperationException()
}
}
companion object {
const val MULTIPLIER = 6364136223846793005
const val INCREMENT = 1442695040888963407
}
}

53
src/main/kotlin/ru/dbotthepony/mc/otm/core/util/PCG32RandomSource.kt Normal file
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@ -0,0 +1,53 @@
package ru.dbotthepony.mc.otm.core.util
import net.minecraft.util.Mth
import net.minecraft.util.RandomSource
import net.minecraft.world.level.levelgen.LegacyRandomSource
import net.minecraft.world.level.levelgen.MarsagliaPolarGaussian
import net.minecraft.world.level.levelgen.PositionalRandomFactory
import net.minecraft.world.level.levelgen.RandomSupport
import ru.dbotthepony.kommons.random.LCG64Random
import ru.dbotthepony.kommons.random.PCG32Random
import java.lang.StringBuilder
/**
* @see PCG32Random
*/
class PCG32RandomSource(seed: Long = RandomSupport.generateUniqueSeed()) : PCG32Random(seed), IRandomSourceGenerator {
private val gaussian = MarsagliaPolarGaussian(this)
override fun setSeed(seed: Long) {
this.seed = seed
gaussian.reset()
}
override fun nextGaussian(): Double {
return gaussian.nextGaussian()
}
override fun fork(): RandomSource {
return PCG32RandomSource(nextLong())
}
override fun forkPositional(): PositionalRandomFactory {
return Positional(nextLong())
}
class Positional(val seed: Long) : PositionalRandomFactory {
override fun at(x: Int, y: Int, z: Int): RandomSource {
return PCG32RandomSource(Mth.getSeed(x, y, z).xor(seed))
}
override fun fromHashOf(name: String): RandomSource {
return PCG32RandomSource(name.hashCode().toLong().xor(seed))
}
override fun fromSeed(seed: Long): RandomSource {
return PCG32RandomSource(seed)
}
override fun parityConfigString(builder: StringBuilder) {
throw UnsupportedOperationException()
}
}
}