DBot/overdrive_that_matters
DBot/overdrive_that_matters
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Use thread local non-cryptographic random for Quantum Battery UUIDs

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since they dont need to be cryptographically secure
This commit is contained in:
DBotThePony 2025-03-09 20:06:49 +07:00
parent 9b6fa89850
commit 29edf383cd
Signed by: DBot
GPG Key ID: DCC23B5715498507
4 changed files with 16 additions and 5 deletions
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6
src/main/kotlin/ru/dbotthepony/mc/otm/GlobalEventHandler.kt
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@ -7,6 +7,7 @@ import com.google.common.util.concurrent.ThreadFactoryBuilder
import net.minecraft.client.server.IntegratedServer
import net.minecraft.core.HolderLookup
import net.minecraft.server.MinecraftServer
import net.minecraft.util.RandomSource
import net.minecraft.world.level.Level
import net.neoforged.api.distmarker.Dist
import net.neoforged.fml.loading.FMLLoader
@ -22,12 +23,17 @@ import ru.dbotthepony.mc.otm.core.collect.WeakHashSet
import ru.dbotthepony.mc.otm.core.util.AtomicallyInvalidatedLazy
import ru.dbotthepony.mc.otm.core.util.IConditionalTickable
import ru.dbotthepony.mc.otm.core.util.ITickable
import ru.dbotthepony.mc.otm.core.util.PCG32RandomSource
import ru.dbotthepony.mc.otm.core.util.TickList
import ru.dbotthepony.mc.otm.graph.GraphNodeList
import java.lang.ref.Cleaner
import java.util.*
import java.util.concurrent.atomic.AtomicInteger
private val threadLocalRandom = ThreadLocal.withInitial { PCG32RandomSource() }
internal val THREAD_LOCAL_RANDOM: RandomSource
get() = threadLocalRandom.get()
private val preServerTick = TickList()
private val postServerTick = TickList()
private val preWorldTick = WeakHashMap<Level, TickList>()

4
src/main/kotlin/ru/dbotthepony/mc/otm/core/Ext.kt
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@ -627,6 +627,10 @@ infix fun FluidStack.isNotSameAs(other: FluidStack): Boolean {
data class DoublePair(val first: Double, val second: Double)
fun RandomSource.nextUUID(): UUID {
return UUID(nextLong(), nextLong())
}
// normal distribution via Marsaglia polar method
fun RandomGenerator.nextNormalDoubles(stddev: Double, mean: Double): DoublePair {
var rand1: Double

2
src/main/kotlin/ru/dbotthepony/mc/otm/core/util/PCG32RandomSource.kt
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@ -2,11 +2,9 @@ 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

9
src/main/kotlin/ru/dbotthepony/mc/otm/item/QuantumBatteryItem.kt
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@ -24,6 +24,7 @@ import net.neoforged.neoforge.event.tick.ServerTickEvent
import net.neoforged.neoforge.network.PacketDistributor
import net.neoforged.neoforge.network.handling.IPayloadContext
import ru.dbotthepony.mc.otm.OverdriveThatMatters
import ru.dbotthepony.mc.otm.THREAD_LOCAL_RANDOM
import ru.dbotthepony.mc.otm.capability.FlowDirection
import ru.dbotthepony.mc.otm.capability.MatteryCapability
import ru.dbotthepony.mc.otm.capability.trackedItems
@ -42,6 +43,8 @@ import ru.dbotthepony.mc.otm.core.math.readDecimal
import ru.dbotthepony.mc.otm.core.math.set
import ru.dbotthepony.mc.otm.core.math.writeDecimal
import ru.dbotthepony.mc.otm.core.nbt.set
import ru.dbotthepony.mc.otm.core.nextUUID
import ru.dbotthepony.mc.otm.core.util.PCG32RandomSource
import ru.dbotthepony.mc.otm.core.util.formatPower
import ru.dbotthepony.mc.otm.isClientThread
import ru.dbotthepony.mc.otm.isServerThread
@ -82,7 +85,7 @@ class QuantumBatteryItem(val savedataID: String, val balanceValues: EnergyBalanc
}
}
class UnboundValues(override val uuid: UUID = UUID.randomUUID()) : IValues {
class UnboundValues(override val uuid: UUID = THREAD_LOCAL_RANDOM.nextUUID()) : IValues {
override var energy: Decimal = Decimal.ZERO
override var passed: Decimal = Decimal.ZERO
override var received: Decimal = Decimal.ZERO
@ -125,7 +128,7 @@ class QuantumBatteryItem(val savedataID: String, val balanceValues: EnergyBalanc
}
fun values(): Values {
return values(UUID.randomUUID())
return values(THREAD_LOCAL_RANDOM.nextUUID())
}
override fun save(nbt: CompoundTag, registry: HolderLookup.Provider): CompoundTag {
@ -160,7 +163,7 @@ class QuantumBatteryItem(val savedataID: String, val balanceValues: EnergyBalanc
fun updateValues() {
if (!values.isServer && isServerThread()) {
values = serverData.values(stack[MDataComponentTypes.QUANTUM_LINK_ID] ?: UUID.randomUUID().also { stack[MDataComponentTypes.QUANTUM_LINK_ID] = it })
values = serverData.values(stack[MDataComponentTypes.QUANTUM_LINK_ID] ?: THREAD_LOCAL_RANDOM.nextUUID().also { stack[MDataComponentTypes.QUANTUM_LINK_ID] = it })
} else if (isClientThread()) {
val id = stack[MDataComponentTypes.QUANTUM_LINK_ID] ?: return