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f289fa495472f8524119cc2820be5de1edadcea3
DivineMC/patches/server/0047-Implement-Secure-Seed.patch
NONPLAYT f289fa4954 update to 1.21.4
2024-12-05 00:25:45 +03:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: NONPLAYT <76615486+NONPLAYT@users.noreply.github.com>
Date: Sat, 20 Jul 2024 22:04:52 +0300
Subject: [PATCH] Implement Secure Seed
Original license: GPLv3
Original project: https://github.com/plasmoapp/matter
diff --git a/src/main/java/net/minecraft/server/commands/SeedCommand.java b/src/main/java/net/minecraft/server/commands/SeedCommand.java
index 0b500b19a99fa6c2740c0db350a166462668df9c..f13185628dec90a044bf03cf38394b5be8ab2003 100644
--- a/src/main/java/net/minecraft/server/commands/SeedCommand.java
+++ b/src/main/java/net/minecraft/server/commands/SeedCommand.java
@@ -12,6 +12,17 @@ public class SeedCommand {
long l = context.getSource().getLevel().getSeed();
Component component = ComponentUtils.copyOnClickText(String.valueOf(l));
context.getSource().sendSuccess(() -> Component.translatable("commands.seed.success", component), false);
+
+ // DivineMC start - Implement Secure Seed
+ if (space.bxteam.divinemc.configuration.DivineConfig.enableSecureSeed) {
+ space.bxteam.divinemc.seed.Globals.setupGlobals(context.getSource().getLevel());
+ String seedStr = space.bxteam.divinemc.seed.Globals.seedToString(space.bxteam.divinemc.seed.Globals.worldSeed);
+ Component featureSeedComponent = ComponentUtils.copyOnClickText(seedStr);
+
+ context.getSource().sendSuccess(() -> Component.translatable(("Feature seed: %s"), featureSeedComponent), false);
+ }
+ // DivineMC end
+
return (int)l;
}));
}
diff --git a/src/main/java/net/minecraft/server/dedicated/DedicatedServerProperties.java b/src/main/java/net/minecraft/server/dedicated/DedicatedServerProperties.java
index 05e16103af3fd276f0196ddf1a2e5b729b025c34..e0118dfee89d4319f70a0d2f84ba4c21b03a9ed9 100644
--- a/src/main/java/net/minecraft/server/dedicated/DedicatedServerProperties.java
+++ b/src/main/java/net/minecraft/server/dedicated/DedicatedServerProperties.java
@@ -167,7 +167,17 @@ public class DedicatedServerProperties extends Settings<DedicatedServerPropertie
boolean flag = this.get("generate-structures", true);
long i = WorldOptions.parseSeed(s).orElse(WorldOptions.randomSeed());
- this.worldOptions = new WorldOptions(i, flag, false);
+ // DivineMC start - Implement Secure Seed
+ if (space.bxteam.divinemc.configuration.DivineConfig.enableSecureSeed) {
+ String featureSeedStr = this.get("feature-level-seed", "");
+ long[] featureSeed = space.bxteam.divinemc.seed.Globals.parseSeed(featureSeedStr)
+ .orElse(space.bxteam.divinemc.seed.Globals.createRandomWorldSeed());
+
+ this.worldOptions = new WorldOptions(i, featureSeed, flag, false);
+ } else {
+ this.worldOptions = new WorldOptions(i, flag, false);
+ }
+ // DivineMC end
this.worldDimensionData = new DedicatedServerProperties.WorldDimensionData((JsonObject) this.get("generator-settings", (s1) -> {
return GsonHelper.parse(!s1.isEmpty() ? s1 : "{}");
}, new JsonObject()), (String) this.get("level-type", (s1) -> {
diff --git a/src/main/java/net/minecraft/server/level/ServerChunkCache.java b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
index aea9a45c0916501f71018d3250b56da435f5664e..564395b9be9f161dc3ea7956b9b2432dc8bf45fa 100644
--- a/src/main/java/net/minecraft/server/level/ServerChunkCache.java
+++ b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
@@ -692,6 +692,7 @@ public class ServerChunkCache extends ChunkSource implements ca.spottedleaf.moon
}
public ChunkGenerator getGenerator() {
+ space.bxteam.divinemc.seed.Globals.setupGlobals(level); // DivineMC - Implement Secure Seed
return this.chunkMap.generator();
}
diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index 48d6b3d45d73c8f235f51a9652f33c81b3472a12..d791deb1d345daeab2cfa86d0baee944edb28bc1 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -644,6 +644,7 @@ public class ServerLevel extends Level implements ServerEntityGetter, WorldGenLe
chunkgenerator = new org.bukkit.craftbukkit.generator.CustomChunkGenerator(this, chunkgenerator, gen);
}
// CraftBukkit end
+ space.bxteam.divinemc.seed.Globals.setupGlobals(this); // DivineMC - Implement Secure Seed
boolean flag2 = minecraftserver.forceSynchronousWrites();
DataFixer datafixer = minecraftserver.getFixerUpper();
EntityPersistentStorage<Entity> entitypersistentstorage = new EntityStorage(new SimpleRegionStorage(new RegionStorageInfo(convertable_conversionsession.getLevelId(), resourcekey, "entities"), convertable_conversionsession.getDimensionPath(resourcekey).resolve("entities"), datafixer, flag2, DataFixTypes.ENTITY_CHUNK), this, minecraftserver);
diff --git a/src/main/java/net/minecraft/world/entity/monster/Slime.java b/src/main/java/net/minecraft/world/entity/monster/Slime.java
index dad4ef9c672eb4247142de5d045678795951164c..c27684064163af48a5401db2efd72c1e3dbd1fa6 100644
--- a/src/main/java/net/minecraft/world/entity/monster/Slime.java
+++ b/src/main/java/net/minecraft/world/entity/monster/Slime.java
@@ -430,8 +430,13 @@ public class Slime extends Mob implements Enemy {
return false;
}
- ChunkPos chunkcoordintpair = new ChunkPos(pos);
- boolean flag = world.getMinecraftWorld().paperConfig().entities.spawning.allChunksAreSlimeChunks || WorldgenRandom.seedSlimeChunk(chunkcoordintpair.x, chunkcoordintpair.z, ((WorldGenLevel) world).getSeed(), world.getMinecraftWorld().spigotConfig.slimeSeed).nextInt(10) == 0; // Spigot // Paper
+ ChunkPos chunkcoordintpair = new ChunkPos(pos);
+ // DivineMC start - Implement Secure Seed
+ boolean isSlimeChunk = space.bxteam.divinemc.configuration.DivineConfig.enableSecureSeed
+ ? world.getChunk(chunkcoordintpair.x, chunkcoordintpair.z).isSlimeChunk()
+ : WorldgenRandom.seedSlimeChunk(chunkcoordintpair.x, chunkcoordintpair.z, ((WorldGenLevel) world).getSeed(), world.getMinecraftWorld().spigotConfig.slimeSeed).nextInt(10) == 0; // Spigot // Paper
+ boolean flag = world.getMinecraftWorld().paperConfig().entities.spawning.allChunksAreSlimeChunks || isSlimeChunk;
+ // DivineMC end
// Paper start - Replace rules for Height in Slime Chunks
final double maxHeightSlimeChunk = world.getMinecraftWorld().paperConfig().entities.spawning.slimeSpawnHeight.slimeChunk.maximum;
diff --git a/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java b/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java
index f87abb22dd161b2b74401086de80dc95c9ac2dbb..5ca052b94ff9fa36e3241a745229839a1e9bc852 100644
--- a/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java
+++ b/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java
@@ -85,6 +85,11 @@ public abstract class ChunkAccess implements BiomeManager.NoiseBiomeSource, Ligh
protected final LevelHeightAccessor levelHeightAccessor;
protected final LevelChunkSection[] sections;
+ // DivineMC start - Implement Secure Seed
+ private boolean slimeChunk;
+ private boolean hasComputedSlimeChunk;
+ // DivineMC end
+
// CraftBukkit start - SPIGOT-6814: move to IChunkAccess to account for 1.17 to 1.18 chunk upgrading.
private static final org.bukkit.craftbukkit.persistence.CraftPersistentDataTypeRegistry DATA_TYPE_REGISTRY = new org.bukkit.craftbukkit.persistence.CraftPersistentDataTypeRegistry();
public org.bukkit.craftbukkit.persistence.DirtyCraftPersistentDataContainer persistentDataContainer = new org.bukkit.craftbukkit.persistence.DirtyCraftPersistentDataContainer(ChunkAccess.DATA_TYPE_REGISTRY);
@@ -189,6 +194,17 @@ public abstract class ChunkAccess implements BiomeManager.NoiseBiomeSource, Ligh
return GameEventListenerRegistry.NOOP;
}
+ // DivineMC start - Implement Secure Seed
+ public boolean isSlimeChunk() {
+ if (!hasComputedSlimeChunk) {
+ hasComputedSlimeChunk = true;
+ slimeChunk = space.bxteam.divinemc.seed.WorldgenCryptoRandom.seedSlimeChunk(chunkPos.x, chunkPos.z).nextInt(10) == 0;
+ }
+
+ return slimeChunk;
+ }
+ // DivineMC end
+
public abstract BlockState getBlockState(final int x, final int y, final int z); // Paper
@Nullable
public abstract BlockState setBlockState(BlockPos pos, BlockState state, boolean moved);
diff --git a/src/main/java/net/minecraft/world/level/chunk/ChunkGenerator.java b/src/main/java/net/minecraft/world/level/chunk/ChunkGenerator.java
index e0cb360ece042c4fc6aa0d10106923fe25288f5c..b42ab192fec723a17acd70aeb093895c8938ece2 100644
--- a/src/main/java/net/minecraft/world/level/chunk/ChunkGenerator.java
+++ b/src/main/java/net/minecraft/world/level/chunk/ChunkGenerator.java
@@ -345,7 +345,11 @@ public abstract class ChunkGenerator {
return structure.step().ordinal();
}));
List<FeatureSorter.StepFeatureData> list = (List) this.featuresPerStep.get();
- WorldgenRandom seededrandom = new WorldgenRandom(new XoroshiroRandomSource(RandomSupport.generateUniqueSeed()));
+ // DivineMC start - Implement Secure Seed
+ WorldgenRandom seededrandom = space.bxteam.divinemc.configuration.DivineConfig.enableSecureSeed
+ ? new space.bxteam.divinemc.seed.WorldgenCryptoRandom(blockposition.getX(), blockposition.getZ(), space.bxteam.divinemc.seed.Globals.Salt.UNDEFINED, 0)
+ : new WorldgenRandom(new XoroshiroRandomSource(RandomSupport.generateUniqueSeed()));
+ // DivineMC end
long i = seededrandom.setDecorationSeed(generatoraccessseed.getSeed(), blockposition.getX(), blockposition.getZ());
Set<Holder<Biome>> set = new ObjectArraySet();
@@ -584,9 +588,18 @@ public abstract class ChunkGenerator {
ArrayList<StructureSet.StructureSelectionEntry> arraylist = new ArrayList(list.size());
arraylist.addAll(list);
- WorldgenRandom seededrandom = new WorldgenRandom(new LegacyRandomSource(0L));
-
- seededrandom.setLargeFeatureSeed(placementCalculator.getLevelSeed(), chunkcoordintpair.x, chunkcoordintpair.z);
+ // DivineMC start - Implement Secure Seed
+ WorldgenRandom seededrandom;
+ if (space.bxteam.divinemc.configuration.DivineConfig.enableSecureSeed) {
+ seededrandom = new space.bxteam.divinemc.seed.WorldgenCryptoRandom(
+ chunkcoordintpair.x, chunkcoordintpair.z, space.bxteam.divinemc.seed.Globals.Salt.GENERATE_FEATURE, 0
+ );
+ } else {
+ seededrandom = new WorldgenRandom(new LegacyRandomSource(0L));
+
+ seededrandom.setLargeFeatureSeed(placementCalculator.getLevelSeed(), chunkcoordintpair.x, chunkcoordintpair.z);
+ }
+ // DivineMC end
int i = 0;
StructureSet.StructureSelectionEntry structureset_a1;
diff --git a/src/main/java/net/minecraft/world/level/chunk/ChunkGeneratorStructureState.java b/src/main/java/net/minecraft/world/level/chunk/ChunkGeneratorStructureState.java
index a20520a6bd28bae1cee82258ac49d9753faba2bd..a0fbcf642f5a2aa6354d4287961d93779893d852 100644
--- a/src/main/java/net/minecraft/world/level/chunk/ChunkGeneratorStructureState.java
+++ b/src/main/java/net/minecraft/world/level/chunk/ChunkGeneratorStructureState.java
@@ -224,15 +224,20 @@ public class ChunkGeneratorStructureState {
List<CompletableFuture<ChunkPos>> list = new ArrayList(j);
int k = placement.spread();
HolderSet<Biome> holderset = placement.preferredBiomes();
- RandomSource randomsource = RandomSource.create();
-
- // Paper start - Add missing structure set seed configs
- if (this.conf.strongholdSeed != null && structureSetEntry.is(net.minecraft.world.level.levelgen.structure.BuiltinStructureSets.STRONGHOLDS)) {
- randomsource.setSeed(this.conf.strongholdSeed);
- } else {
- // Paper end - Add missing structure set seed configs
- randomsource.setSeed(this.concentricRingsSeed);
- } // Paper - Add missing structure set seed configs
+ // DivineMC start - Implement Secure Seed
+ RandomSource randomsource = space.bxteam.divinemc.configuration.DivineConfig.enableSecureSeed
+ ? new space.bxteam.divinemc.seed.WorldgenCryptoRandom(0, 0, space.bxteam.divinemc.seed.Globals.Salt.STRONGHOLDS, 0)
+ : RandomSource.create();
+
+ if (!space.bxteam.divinemc.configuration.DivineConfig.enableSecureSeed) {
+ // Paper start - Add missing structure set seed configs
+ if (this.conf.strongholdSeed != null && structureSetEntry.is(net.minecraft.world.level.levelgen.structure.BuiltinStructureSets.STRONGHOLDS)) {
+ randomsource.setSeed(this.conf.strongholdSeed);
+ } else {
+ // Paper end - Add missing structure set seed configs
+ randomsource.setSeed(this.concentricRingsSeed);
+ } // Paper - Add missing structure set seed configs
+ } // DivineMC end
double d0 = randomsource.nextDouble() * Math.PI * 2.0D;
int l = 0;
int i1 = 0;
diff --git a/src/main/java/net/minecraft/world/level/chunk/status/ChunkStep.java b/src/main/java/net/minecraft/world/level/chunk/status/ChunkStep.java
index f9aad1b8c02b70e620efdc2a58cadf4fff0f3ed5..261661977c3670d5173c677f041b2305a212718c 100644
--- a/src/main/java/net/minecraft/world/level/chunk/status/ChunkStep.java
+++ b/src/main/java/net/minecraft/world/level/chunk/status/ChunkStep.java
@@ -60,6 +60,7 @@ public final class ChunkStep implements ca.spottedleaf.moonrise.patches.chunk_sy
}
public CompletableFuture<ChunkAccess> apply(WorldGenContext context, StaticCache2D<GenerationChunkHolder> staticCache2D, ChunkAccess chunk) {
+ space.bxteam.divinemc.seed.Globals.setupGlobals(context.level()); // DivineMC - Implement Secure Seed
if (chunk.getPersistedStatus().isBefore(this.targetStatus)) {
ProfiledDuration profiledDuration = JvmProfiler.INSTANCE.onChunkGenerate(chunk.getPos(), context.level().dimension(), this.targetStatus.getName());
return this.task.doWork(context, this, staticCache2D, chunk).thenApply(generated -> this.completeChunkGeneration(generated, profiledDuration));
diff --git a/src/main/java/net/minecraft/world/level/levelgen/WorldOptions.java b/src/main/java/net/minecraft/world/level/levelgen/WorldOptions.java
index 41c19e4e7bde4632879da564f52f3d373de27ec4..6070110bdfada835dd6b04f66644a47aa868fe4e 100644
--- a/src/main/java/net/minecraft/world/level/levelgen/WorldOptions.java
+++ b/src/main/java/net/minecraft/world/level/levelgen/WorldOptions.java
@@ -9,8 +9,19 @@ import net.minecraft.util.RandomSource;
import org.apache.commons.lang3.StringUtils;
public class WorldOptions {
+ // DivineMC start - Implement Secure Seed
+ private static final boolean isSecureSeedEnabled = space.bxteam.divinemc.configuration.DivineConfig.enableSecureSeed;
public static final MapCodec<WorldOptions> CODEC = RecordCodecBuilder.mapCodec(
- instance -> instance.group(
+ instance -> isSecureSeedEnabled
+ ? instance.group(
+ Codec.LONG.fieldOf("seed").stable().forGetter(WorldOptions::seed),
+ Codec.LONG_STREAM.fieldOf("feature_seed").stable().forGetter(WorldOptions::featureSeedStream),
+ Codec.BOOL.fieldOf("generate_features").orElse(true).stable().forGetter(WorldOptions::generateStructures),
+ Codec.BOOL.fieldOf("bonus_chest").orElse(false).stable().forGetter(WorldOptions::generateBonusChest),
+ Codec.STRING.lenientOptionalFieldOf("legacy_custom_options").stable().forGetter(generatorOptions -> generatorOptions.legacyCustomOptions)
+ )
+ .apply(instance, instance.stable(WorldOptions::new))
+ : instance.group(
Codec.LONG.fieldOf("seed").stable().forGetter(WorldOptions::seed),
Codec.BOOL.fieldOf("generate_features").orElse(true).stable().forGetter(WorldOptions::generateStructures),
Codec.BOOL.fieldOf("bonus_chest").orElse(false).stable().forGetter(WorldOptions::generateBonusChest),
@@ -18,8 +29,14 @@ public class WorldOptions {
)
.apply(instance, instance.stable(WorldOptions::new))
);
- public static final WorldOptions DEMO_OPTIONS = new WorldOptions((long)"North Carolina".hashCode(), true, true);
+ // DivineMC end
+ // DivineMC start - Implement Secure Seed
+ public static final WorldOptions DEMO_OPTIONS = isSecureSeedEnabled
+ ? new WorldOptions((long) "North Carolina".hashCode(), space.bxteam.divinemc.seed.Globals.createRandomWorldSeed(), true, true)
+ : new WorldOptions("North Carolina".hashCode(), true, true);
+ // DivineMC end
private final long seed;
+ private long[] featureSeed = space.bxteam.divinemc.seed.Globals.createRandomWorldSeed(); // DivineMC - Implement Secure Seed
private final boolean generateStructures;
private final boolean generateBonusChest;
private final Optional<String> legacyCustomOptions;
@@ -28,8 +45,18 @@ public class WorldOptions {
this(seed, generateStructures, bonusChest, Optional.empty());
}
+ public WorldOptions(long seed, long[] featureSeed, boolean generateStructures, boolean bonusChest) {
+ this(seed, featureSeed, generateStructures, bonusChest, Optional.empty());
+ }
+
public static WorldOptions defaultWithRandomSeed() {
- return new WorldOptions(randomSeed(), true, false);
+ return isSecureSeedEnabled
+ ? new WorldOptions(randomSeed(), space.bxteam.divinemc.seed.Globals.createRandomWorldSeed(), true, false)
+ : new WorldOptions(randomSeed(), true, false);
+ }
+
+ private WorldOptions(long seed, java.util.stream.LongStream featureSeed, boolean generateStructures, boolean bonusChest, Optional<String> legacyCustomOptions) {
+ this(seed, featureSeed.toArray(), generateStructures, bonusChest, legacyCustomOptions);
}
public static WorldOptions testWorldWithRandomSeed() {
@@ -43,10 +70,27 @@ public class WorldOptions {
this.legacyCustomOptions = legacyCustomOptions;
}
+ // DivineMC start - Implement Secure Seed
+ private WorldOptions(long seed, long[] featureSeed, boolean generateStructures, boolean bonusChest, Optional<String> legacyCustomOptions) {
+ this(seed, generateStructures, bonusChest, legacyCustomOptions);
+ this.featureSeed = featureSeed;
+ }
+ // DivineMC end
+
public long seed() {
return this.seed;
}
+ // DivineMC start - Implement Secure Seed
+ public long[] featureSeed() {
+ return this.featureSeed;
+ }
+
+ public java.util.stream.LongStream featureSeedStream() {
+ return java.util.stream.LongStream.of(this.featureSeed);
+ }
+ // DivineMC end
+
public boolean generateStructures() {
return this.generateStructures;
}
@@ -59,17 +103,25 @@ public class WorldOptions {
return this.legacyCustomOptions.isPresent();
}
+ // DivineMC start - Implement Secure Seed
public WorldOptions withBonusChest(boolean bonusChest) {
- return new WorldOptions(this.seed, this.generateStructures, bonusChest, this.legacyCustomOptions);
+ return isSecureSeedEnabled
+ ? new WorldOptions(this.seed, this.featureSeed, this.generateStructures, bonusChest, this.legacyCustomOptions)
+ : new WorldOptions(this.seed, this.generateStructures, bonusChest, this.legacyCustomOptions);
}
public WorldOptions withStructures(boolean structures) {
- return new WorldOptions(this.seed, structures, this.generateBonusChest, this.legacyCustomOptions);
+ return isSecureSeedEnabled
+ ? new WorldOptions(this.seed, this.featureSeed, structures, this.generateBonusChest, this.legacyCustomOptions)
+ : new WorldOptions(this.seed, structures, this.generateBonusChest, this.legacyCustomOptions);
}
public WorldOptions withSeed(OptionalLong seed) {
- return new WorldOptions(seed.orElse(randomSeed()), this.generateStructures, this.generateBonusChest, this.legacyCustomOptions);
+ return isSecureSeedEnabled
+ ? new WorldOptions(seed.orElse(randomSeed()), space.bxteam.divinemc.seed.Globals.createRandomWorldSeed(), this.generateStructures, this.generateBonusChest, this.legacyCustomOptions)
+ : new WorldOptions(seed.orElse(randomSeed()), this.generateStructures, this.generateBonusChest, this.legacyCustomOptions);
}
+ // DivineMC end
public static OptionalLong parseSeed(String seed) {
seed = seed.trim();
diff --git a/src/main/java/net/minecraft/world/level/levelgen/feature/GeodeFeature.java b/src/main/java/net/minecraft/world/level/levelgen/feature/GeodeFeature.java
index 270db8b29cdf65e9bb932637425214eefeca86b7..6cf307b4ddb87ad54ead02dd10290a7a825095e3 100644
--- a/src/main/java/net/minecraft/world/level/levelgen/feature/GeodeFeature.java
+++ b/src/main/java/net/minecraft/world/level/levelgen/feature/GeodeFeature.java
@@ -41,7 +41,11 @@ public class GeodeFeature extends Feature<GeodeConfiguration> {
int j = geodeConfiguration.maxGenOffset;
List<Pair<BlockPos, Integer>> list = Lists.newLinkedList();
int k = geodeConfiguration.distributionPoints.sample(randomSource);
- WorldgenRandom worldgenRandom = new WorldgenRandom(new LegacyRandomSource(worldGenLevel.getSeed()));
+ // DivineMC start - Implement Secure Seed
+ WorldgenRandom worldgenRandom = space.bxteam.divinemc.configuration.DivineConfig.enableSecureSeed
+ ? new space.bxteam.divinemc.seed.WorldgenCryptoRandom(0, 0, space.bxteam.divinemc.seed.Globals.Salt.GEODE_FEATURE, 0)
+ : new WorldgenRandom(new LegacyRandomSource(worldGenLevel.getSeed()));
+ // DivineMC end
NormalNoise normalNoise = NormalNoise.create(worldgenRandom, -4, 1.0);
List<BlockPos> list2 = Lists.newLinkedList();
double d = (double)k / (double)geodeConfiguration.outerWallDistance.getMaxValue();
diff --git a/src/main/java/net/minecraft/world/level/levelgen/structure/Structure.java b/src/main/java/net/minecraft/world/level/levelgen/structure/Structure.java
index 13f7fce1959c0f44e047616674198176e667067f..23528e2eef5d097cad44e8f51a6199a7bf718044 100644
--- a/src/main/java/net/minecraft/world/level/levelgen/structure/Structure.java
+++ b/src/main/java/net/minecraft/world/level/levelgen/structure/Structure.java
@@ -248,6 +248,14 @@ public abstract class Structure {
}
private static WorldgenRandom makeRandom(long seed, ChunkPos chunkPos) {
+ // DivineMC start - Implement Secure Seed
+ if (space.bxteam.divinemc.configuration.DivineConfig.enableSecureSeed) {
+ return new space.bxteam.divinemc.seed.WorldgenCryptoRandom(
+ chunkPos.x, chunkPos.z, space.bxteam.divinemc.seed.Globals.Salt.GENERATE_FEATURE, seed
+ );
+ }
+ // DivineMC end
+
WorldgenRandom worldgenRandom = new WorldgenRandom(new LegacyRandomSource(0L));
worldgenRandom.setLargeFeatureSeed(seed, chunkPos.x, chunkPos.z);
return worldgenRandom;
diff --git a/src/main/java/net/minecraft/world/level/levelgen/structure/placement/RandomSpreadStructurePlacement.java b/src/main/java/net/minecraft/world/level/levelgen/structure/placement/RandomSpreadStructurePlacement.java
index f873a0a0734b4fe74ba5b5f8ae0cc3c78fa76b9f..1e29d5554ac2be3219f075092778e49022788723 100644
--- a/src/main/java/net/minecraft/world/level/levelgen/structure/placement/RandomSpreadStructurePlacement.java
+++ b/src/main/java/net/minecraft/world/level/levelgen/structure/placement/RandomSpreadStructurePlacement.java
@@ -71,8 +71,17 @@ public class RandomSpreadStructurePlacement extends StructurePlacement {
public ChunkPos getPotentialStructureChunk(long seed, int chunkX, int chunkZ) {
int i = Math.floorDiv(chunkX, this.spacing);
int j = Math.floorDiv(chunkZ, this.spacing);
- WorldgenRandom worldgenRandom = new WorldgenRandom(new LegacyRandomSource(0L));
- worldgenRandom.setLargeFeatureWithSalt(seed, i, j, this.salt());
+ // DivineMC start - Implement Secure Seed
+ WorldgenRandom worldgenRandom;
+ if (space.bxteam.divinemc.configuration.DivineConfig.enableSecureSeed) {
+ worldgenRandom = new space.bxteam.divinemc.seed.WorldgenCryptoRandom(
+ i, j, space.bxteam.divinemc.seed.Globals.Salt.POTENTIONAL_FEATURE, this.salt
+ );
+ } else {
+ worldgenRandom = new WorldgenRandom(new LegacyRandomSource(0L));
+ worldgenRandom.setLargeFeatureWithSalt(seed, i, j, this.salt());
+ }
+ // DivineMC end
int k = this.spacing - this.separation;
int l = this.spreadType.evaluate(worldgenRandom, k);
int m = this.spreadType.evaluate(worldgenRandom, k);
diff --git a/src/main/java/net/minecraft/world/level/levelgen/structure/placement/StructurePlacement.java b/src/main/java/net/minecraft/world/level/levelgen/structure/placement/StructurePlacement.java
index cbf13e4f2da6a27619e9bc9a7cd73bb6e69cad2a..8aebe917973f65123a3b0744172a307f95b05cb0 100644
--- a/src/main/java/net/minecraft/world/level/levelgen/structure/placement/StructurePlacement.java
+++ b/src/main/java/net/minecraft/world/level/levelgen/structure/placement/StructurePlacement.java
@@ -118,8 +118,18 @@ public abstract class StructurePlacement {
public abstract StructurePlacementType<?> type();
private static boolean probabilityReducer(long seed, int salt, int chunkX, int chunkZ, float frequency, @org.jetbrains.annotations.Nullable Integer saltOverride) { // Paper - Add missing structure set seed configs; ignore here
- WorldgenRandom worldgenRandom = new WorldgenRandom(new LegacyRandomSource(0L));
- worldgenRandom.setLargeFeatureWithSalt(seed, salt, chunkX, chunkZ);
+ // DivineMC start - Implement Secure Seed
+ WorldgenRandom worldgenRandom;
+ if (space.bxteam.divinemc.configuration.DivineConfig.enableSecureSeed) {
+ worldgenRandom = new space.bxteam.divinemc.seed.WorldgenCryptoRandom(
+ chunkX, chunkZ, space.bxteam.divinemc.seed.Globals.Salt.UNDEFINED, salt
+ );
+ } else {
+ worldgenRandom = new WorldgenRandom(new LegacyRandomSource(0L));
+ worldgenRandom.setLargeFeatureWithSalt(seed, salt, chunkX, chunkZ);
+ }
+ // DivineMC end
+
return worldgenRandom.nextFloat() < frequency;
}
diff --git a/src/main/java/net/minecraft/world/level/levelgen/structure/pools/JigsawPlacement.java b/src/main/java/net/minecraft/world/level/levelgen/structure/pools/JigsawPlacement.java
index 65a0d9e7dd742732974774daabce02e9e52039ac..53e1261ef3ec66d90bcc17e99cb21e7d8ef9ccea 100644
--- a/src/main/java/net/minecraft/world/level/levelgen/structure/pools/JigsawPlacement.java
+++ b/src/main/java/net/minecraft/world/level/levelgen/structure/pools/JigsawPlacement.java
@@ -64,7 +64,11 @@ public class JigsawPlacement {
ChunkGenerator chunkGenerator = context.chunkGenerator();
StructureTemplateManager structureTemplateManager = context.structureTemplateManager();
LevelHeightAccessor levelHeightAccessor = context.heightAccessor();
- WorldgenRandom worldgenRandom = context.random();
+ // DivineMC start - Implement Secure Seed
+ WorldgenRandom worldgenRandom = space.bxteam.divinemc.configuration.DivineConfig.enableSecureSeed
+ ? new space.bxteam.divinemc.seed.WorldgenCryptoRandom(context.chunkPos().x, context.chunkPos().z, space.bxteam.divinemc.seed.Globals.Salt.JIGSAW_PLACEMENT, 0)
+ : context.random();
+ // DivineMC end
Registry<StructureTemplatePool> registry = registryAccess.lookupOrThrow(Registries.TEMPLATE_POOL);
Rotation rotation = Rotation.getRandom(worldgenRandom);
StructureTemplatePool structureTemplatePool = structurePool.unwrapKey()
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftChunk.java b/src/main/java/org/bukkit/craftbukkit/CraftChunk.java
index 2dd38f40c8c0b48b12ffe557ceeed69213066a6a..11cad88fc387f64df0f4e13558611c4d69487266 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftChunk.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftChunk.java
@@ -205,7 +205,12 @@ public class CraftChunk implements Chunk {
@Override
public boolean isSlimeChunk() {
// 987234911L is deterimined in EntitySlime when seeing if a slime can spawn in a chunk
- return this.worldServer.paperConfig().entities.spawning.allChunksAreSlimeChunks || WorldgenRandom.seedSlimeChunk(this.getX(), this.getZ(), this.getWorld().getSeed(), worldServer.spigotConfig.slimeSeed).nextInt(10) == 0; // Paper
+ // DivineMC start - Implement Secure Seed
+ boolean isSlimeChunk = space.bxteam.divinemc.configuration.DivineConfig.enableSecureSeed
+ ? worldServer.getChunk(this.getX(), this.getZ()).isSlimeChunk()
+ : WorldgenRandom.seedSlimeChunk(this.getX(), this.getZ(), this.getWorld().getSeed(), worldServer.spigotConfig.slimeSeed).nextInt(10) == 0; // Paper
+ return this.worldServer.paperConfig().entities.spawning.allChunksAreSlimeChunks || isSlimeChunk;
+ // DivineMC end
}
@Override
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index d57338319e8267fe83ae6578322dfcc1eba336aa..1dacae97862e841fcb1c96dfb6c4fe4e87b872fe 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -1412,7 +1412,11 @@ public final class CraftServer implements Server {
iregistrycustom_dimension = leveldataanddimensions.dimensions().dimensionsRegistryAccess();
} else {
LevelSettings worldsettings;
- WorldOptions worldoptions = new WorldOptions(creator.seed(), creator.generateStructures(), false);
+ // DivineMC start - Implement Secure Seed
+ WorldOptions worldoptions = space.bxteam.divinemc.configuration.DivineConfig.enableSecureSeed
+ ? new WorldOptions(creator.seed(), space.bxteam.divinemc.seed.Globals.createRandomWorldSeed(), creator.generateStructures(), false)
+ : new WorldOptions(creator.seed(), creator.generateStructures(), false);
+ // DivineMC end
WorldDimensions worlddimensions;
DedicatedServerProperties.WorldDimensionData properties = new DedicatedServerProperties.WorldDimensionData(GsonHelper.parse((creator.generatorSettings().isEmpty()) ? "{}" : creator.generatorSettings()), creator.type().name().toLowerCase(Locale.ROOT));
diff --git a/src/main/java/space/bxteam/divinemc/configuration/DivineConfig.java b/src/main/java/space/bxteam/divinemc/configuration/DivineConfig.java
index 9deb9310b6829f2e1bac36327bbb21cee099b22b..c494d88cda016ff7a4da37ac1cee2a05876e595f 100644
--- a/src/main/java/space/bxteam/divinemc/configuration/DivineConfig.java
+++ b/src/main/java/space/bxteam/divinemc/configuration/DivineConfig.java
@@ -158,10 +158,12 @@ public class DivineConfig {
public static boolean disableNonEditableSignWarning = true;
public static boolean removeVanillaUsernameCheck = false;
public static boolean disableMovedWronglyThreshold = false;
+ public static boolean enableSecureSeed = false;
private static void miscSettings() {
disableNonEditableSignWarning = getBoolean("settings.misc.disable-non-editable-sign-warning", disableNonEditableSignWarning);
removeVanillaUsernameCheck = getBoolean("settings.misc.remove-vanilla-username-check", removeVanillaUsernameCheck);
disableMovedWronglyThreshold = getBoolean("settings.misc.disable-moved-wrongly-threshold", disableMovedWronglyThreshold);
+ enableSecureSeed = getBoolean("settings.misc.enable-secure-seed", enableSecureSeed);
}
public static boolean biomeManagerOptimization = true;
diff --git a/src/main/java/space/bxteam/divinemc/seed/Globals.java b/src/main/java/space/bxteam/divinemc/seed/Globals.java
new file mode 100644
index 0000000000000000000000000000000000000000..39d2d74f6a89ecbe42ef45d9fc500762a2dfce51
--- /dev/null
+++ b/src/main/java/space/bxteam/divinemc/seed/Globals.java
@@ -0,0 +1,94 @@
+package space.bxteam.divinemc.seed;
+
+import com.google.common.collect.Iterables;
+import net.minecraft.server.level.ServerLevel;
+
+import java.math.BigInteger;
+import java.security.SecureRandom;
+import java.util.Optional;
+
+public class Globals {
+ public static final int WORLD_SEED_LONGS = 16;
+ public static final int WORLD_SEED_BITS = WORLD_SEED_LONGS * 64;
+
+ public static final long[] worldSeed = new long[WORLD_SEED_LONGS];
+ public static final ThreadLocal<Integer> dimension = ThreadLocal.withInitial(() -> 0);
+
+ public enum Salt {
+ UNDEFINED,
+ BASTION_FEATURE,
+ WOODLAND_MANSION_FEATURE,
+ MINESHAFT_FEATURE,
+ BURIED_TREASURE_FEATURE,
+ NETHER_FORTRESS_FEATURE,
+ PILLAGER_OUTPOST_FEATURE,
+ GEODE_FEATURE,
+ NETHER_FOSSIL_FEATURE,
+ OCEAN_MONUMENT_FEATURE,
+ RUINED_PORTAL_FEATURE,
+ POTENTIONAL_FEATURE,
+ GENERATE_FEATURE,
+ JIGSAW_PLACEMENT,
+ STRONGHOLDS,
+ POPULATION,
+ DECORATION,
+ SLIME_CHUNK
+ }
+
+ public static void setupGlobals(ServerLevel world) {
+ if (!space.bxteam.divinemc.configuration.DivineConfig.enableSecureSeed) return;
+
+ long[] seed = world.getServer().getWorldData().worldGenOptions().featureSeed();
+ System.arraycopy(seed, 0, worldSeed, 0, WORLD_SEED_LONGS);
+ int worldIndex = Iterables.indexOf(world.getServer().levelKeys(), it -> it == world.dimension());
+ if (worldIndex == -1)
+ worldIndex = world.getServer().levelKeys().size(); // if we are in world construction it may not have been added to the map yet
+ dimension.set(worldIndex);
+ }
+
+ public static long[] createRandomWorldSeed() {
+ long[] seed = new long[WORLD_SEED_LONGS];
+ SecureRandom rand = new SecureRandom();
+ for (int i = 0; i < WORLD_SEED_LONGS; i++) {
+ seed[i] = rand.nextLong();
+ }
+ return seed;
+ }
+
+ // 1024-bit string -> 16 * 64 long[]
+ public static Optional<long[]> parseSeed(String seedStr) {
+ if (seedStr.isEmpty()) return Optional.empty();
+
+ if (seedStr.length() != WORLD_SEED_BITS) {
+ throw new IllegalArgumentException("Secure seed length must be " + WORLD_SEED_BITS + "-bit but found " + seedStr.length() + "-bit.");
+ }
+
+ long[] seed = new long[WORLD_SEED_LONGS];
+
+ for (int i = 0; i < WORLD_SEED_LONGS; i++) {
+ int start = i * 64;
+ int end = start + 64;
+ String seedSection = seedStr.substring(start, end);
+
+ BigInteger seedInDecimal = new BigInteger(seedSection, 2);
+ seed[i] = seedInDecimal.longValue();
+ }
+
+ return Optional.of(seed);
+ }
+
+ // 16 * 64 long[] -> 1024-bit string
+ public static String seedToString(long[] seed) {
+ StringBuilder sb = new StringBuilder();
+
+ for (long longV : seed) {
+ // Convert to 64-bit binary string per long
+ // Use format to keep 64-bit length, and use 0 to complete space
+ String binaryStr = String.format("%64s", Long.toBinaryString(longV)).replace(' ', '0');
+
+ sb.append(binaryStr);
+ }
+
+ return sb.toString();
+ }
+}
diff --git a/src/main/java/space/bxteam/divinemc/seed/Hashing.java b/src/main/java/space/bxteam/divinemc/seed/Hashing.java
new file mode 100644
index 0000000000000000000000000000000000000000..5974e52ec4ad6422ef0eac19d0b32be233889a40
--- /dev/null
+++ b/src/main/java/space/bxteam/divinemc/seed/Hashing.java
@@ -0,0 +1,73 @@
+package space.bxteam.divinemc.seed;
+
+public class Hashing {
+ // https://en.wikipedia.org/wiki/BLAKE_(hash_function)
+ // https://github.com/bcgit/bc-java/blob/master/core/src/main/java/org/bouncycastle/crypto/digests/Blake2bDigest.java
+
+ private final static long[] blake2b_IV = {
+ 0x6a09e667f3bcc908L, 0xbb67ae8584caa73bL, 0x3c6ef372fe94f82bL,
+ 0xa54ff53a5f1d36f1L, 0x510e527fade682d1L, 0x9b05688c2b3e6c1fL,
+ 0x1f83d9abfb41bd6bL, 0x5be0cd19137e2179L
+ };
+
+ private final static byte[][] blake2b_sigma = {
+ {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15},
+ {14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3},
+ {11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4},
+ {7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8},
+ {9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13},
+ {2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9},
+ {12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11},
+ {13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10},
+ {6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5},
+ {10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13, 0},
+ {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15},
+ {14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3}
+ };
+
+ public static long[] hashWorldSeed(long[] worldSeed) {
+ long[] result = blake2b_IV.clone();
+ result[0] ^= 0x01010040;
+ hash(worldSeed, result, new long[16], 0, false);
+ return result;
+ }
+
+ public static void hash(long[] message, long[] chainValue, long[] internalState, long messageOffset, boolean isFinal) {
+ assert message.length == 16;
+ assert chainValue.length == 8;
+ assert internalState.length == 16;
+
+ System.arraycopy(chainValue, 0, internalState, 0, chainValue.length);
+ System.arraycopy(blake2b_IV, 0, internalState, chainValue.length, 4);
+ internalState[12] = messageOffset ^ blake2b_IV[4];
+ internalState[13] = blake2b_IV[5];
+ if (isFinal) internalState[14] = ~blake2b_IV[6];
+ internalState[15] = blake2b_IV[7];
+
+ for (int round = 0; round < 12; round++) {
+ G(message[blake2b_sigma[round][0]], message[blake2b_sigma[round][1]], 0, 4, 8, 12, internalState);
+ G(message[blake2b_sigma[round][2]], message[blake2b_sigma[round][3]], 1, 5, 9, 13, internalState);
+ G(message[blake2b_sigma[round][4]], message[blake2b_sigma[round][5]], 2, 6, 10, 14, internalState);
+ G(message[blake2b_sigma[round][6]], message[blake2b_sigma[round][7]], 3, 7, 11, 15, internalState);
+ G(message[blake2b_sigma[round][8]], message[blake2b_sigma[round][9]], 0, 5, 10, 15, internalState);
+ G(message[blake2b_sigma[round][10]], message[blake2b_sigma[round][11]], 1, 6, 11, 12, internalState);
+ G(message[blake2b_sigma[round][12]], message[blake2b_sigma[round][13]], 2, 7, 8, 13, internalState);
+ G(message[blake2b_sigma[round][14]], message[blake2b_sigma[round][15]], 3, 4, 9, 14, internalState);
+ }
+
+ for (int i = 0; i < 8; i++) {
+ chainValue[i] ^= internalState[i] ^ internalState[i + 8];
+ }
+ }
+
+ private static void G(long m1, long m2, int posA, int posB, int posC, int posD, long[] internalState) {
+ internalState[posA] = internalState[posA] + internalState[posB] + m1;
+ internalState[posD] = Long.rotateRight(internalState[posD] ^ internalState[posA], 32);
+ internalState[posC] = internalState[posC] + internalState[posD];
+ internalState[posB] = Long.rotateRight(internalState[posB] ^ internalState[posC], 24); // replaces 25 of BLAKE
+ internalState[posA] = internalState[posA] + internalState[posB] + m2;
+ internalState[posD] = Long.rotateRight(internalState[posD] ^ internalState[posA], 16);
+ internalState[posC] = internalState[posC] + internalState[posD];
+ internalState[posB] = Long.rotateRight(internalState[posB] ^ internalState[posC], 63); // replaces 11 of BLAKE
+ }
+}
diff --git a/src/main/java/space/bxteam/divinemc/seed/WorldgenCryptoRandom.java b/src/main/java/space/bxteam/divinemc/seed/WorldgenCryptoRandom.java
new file mode 100644
index 0000000000000000000000000000000000000000..f6e69a105c8267c1cf85e77e406ec9fc634a8dd6
--- /dev/null
+++ b/src/main/java/space/bxteam/divinemc/seed/WorldgenCryptoRandom.java
@@ -0,0 +1,159 @@
+package space.bxteam.divinemc.seed;
+
+import net.minecraft.util.Mth;
+import net.minecraft.util.RandomSource;
+import net.minecraft.world.level.levelgen.LegacyRandomSource;
+import net.minecraft.world.level.levelgen.WorldgenRandom;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Arrays;
+
+public class WorldgenCryptoRandom extends WorldgenRandom {
+ // hash the world seed to guard against badly chosen world seeds
+ private static final long[] HASHED_ZERO_SEED = Hashing.hashWorldSeed(new long[Globals.WORLD_SEED_LONGS]);
+ private static final ThreadLocal<long[]> LAST_SEEN_WORLD_SEED = ThreadLocal.withInitial(() -> new long[Globals.WORLD_SEED_LONGS]);
+ private static final ThreadLocal<long[]> HASHED_WORLD_SEED = ThreadLocal.withInitial(() -> HASHED_ZERO_SEED);
+
+ private final long[] worldSeed = new long[Globals.WORLD_SEED_LONGS];
+ private final long[] randomBits = new long[8];
+ private int randomBitIndex;
+ private static final int MAX_RANDOM_BIT_INDEX = 64 * 8;
+ private static final int LOG2_MAX_RANDOM_BIT_INDEX = 9;
+ private long counter;
+ private final long[] message = new long[16];
+ private final long[] cachedInternalState = new long[16];
+
+ public WorldgenCryptoRandom(int x, int z, Globals.Salt typeSalt, long salt) {
+ super(new LegacyRandomSource(0L));
+ if (typeSalt != null) {
+ this.setSecureSeed(x, z, typeSalt, salt);
+ }
+ }
+
+ public void setSecureSeed(int x, int z, Globals.Salt typeSalt, long salt) {
+ System.arraycopy(Globals.worldSeed, 0, this.worldSeed, 0, Globals.WORLD_SEED_LONGS);
+ message[0] = ((long) x << 32) | ((long) z & 0xffffffffL);
+ message[1] = ((long) Globals.dimension.get() << 32) | ((long) salt & 0xffffffffL);
+ message[2] = typeSalt.ordinal();
+ message[3] = counter = 0;
+ randomBitIndex = MAX_RANDOM_BIT_INDEX;
+ }
+
+ private long[] getHashedWorldSeed() {
+ if (!Arrays.equals(worldSeed, LAST_SEEN_WORLD_SEED.get())) {
+ HASHED_WORLD_SEED.set(Hashing.hashWorldSeed(worldSeed));
+ System.arraycopy(worldSeed, 0, LAST_SEEN_WORLD_SEED.get(), 0, Globals.WORLD_SEED_LONGS);
+ }
+ return HASHED_WORLD_SEED.get();
+ }
+
+ private void moreRandomBits() {
+ message[3] = counter++;
+ System.arraycopy(getHashedWorldSeed(), 0, randomBits, 0, 8);
+ Hashing.hash(message, randomBits, cachedInternalState, 64, true);
+ }
+
+ private long getBits(int count) {
+ if (randomBitIndex >= MAX_RANDOM_BIT_INDEX) {
+ moreRandomBits();
+ randomBitIndex -= MAX_RANDOM_BIT_INDEX;
+ }
+
+ int alignment = randomBitIndex & 63;
+ if ((randomBitIndex >>> 6) == ((randomBitIndex + count) >>> 6)) {
+ long result = (randomBits[randomBitIndex >>> 6] >>> alignment) & ((1L << count) - 1);
+ randomBitIndex += count;
+ return result;
+ } else {
+ long result = (randomBits[randomBitIndex >>> 6] >>> alignment) & ((1L << (64 - alignment)) - 1);
+ randomBitIndex += count;
+ if (randomBitIndex >= MAX_RANDOM_BIT_INDEX) {
+ moreRandomBits();
+ randomBitIndex -= MAX_RANDOM_BIT_INDEX;
+ }
+ alignment = randomBitIndex & 63;
+ result <<= alignment;
+ result |= (randomBits[randomBitIndex >>> 6] >>> (64 - alignment)) & ((1L << alignment) - 1);
+
+ return result;
+ }
+ }
+
+ @Override
+ public @NotNull RandomSource fork() {
+ WorldgenCryptoRandom fork = new WorldgenCryptoRandom(0, 0, null, 0);
+
+ System.arraycopy(Globals.worldSeed, 0, fork.worldSeed, 0, Globals.WORLD_SEED_LONGS);
+ fork.message[0] = this.message[0];
+ fork.message[1] = this.message[1];
+ fork.message[2] = this.message[2];
+ fork.message[3] = this.message[3];
+ fork.randomBitIndex = this.randomBitIndex;
+ fork.counter = this.counter;
+ fork.nextLong();
+
+ return fork;
+ }
+
+ @Override
+ public int next(int bits) {
+ return (int) getBits(bits);
+ }
+
+ @Override
+ public void consumeCount(int count) {
+ randomBitIndex += count;
+ if (randomBitIndex >= MAX_RANDOM_BIT_INDEX * 2) {
+ randomBitIndex -= MAX_RANDOM_BIT_INDEX;
+ counter += randomBitIndex >>> LOG2_MAX_RANDOM_BIT_INDEX;
+ randomBitIndex &= MAX_RANDOM_BIT_INDEX - 1;
+ randomBitIndex += MAX_RANDOM_BIT_INDEX;
+ }
+ }
+
+ @Override
+ public int nextInt(int bound) {
+ int bits = Mth.ceillog2(bound);
+ int result;
+ do {
+ result = (int) getBits(bits);
+ } while (result >= bound);
+
+ return result;
+ }
+
+ @Override
+ public long nextLong() {
+ return getBits(64);
+ }
+
+ @Override
+ public double nextDouble() {
+ return getBits(53) * 0x1.0p-53;
+ }
+
+ @Override
+ public long setDecorationSeed(long worldSeed, int blockX, int blockZ) {
+ setSecureSeed(blockX, blockZ, Globals.Salt.POPULATION, 0);
+ return ((long) blockX << 32) | ((long) blockZ & 0xffffffffL);
+ }
+
+ @Override
+ public void setFeatureSeed(long populationSeed, int index, int step) {
+ setSecureSeed((int) (populationSeed >> 32), (int) populationSeed, Globals.Salt.DECORATION, index + 10000L * step);
+ }
+
+ @Override
+ public void setLargeFeatureSeed(long worldSeed, int chunkX, int chunkZ) {
+ super.setLargeFeatureSeed(worldSeed, chunkX, chunkZ);
+ }
+
+ @Override
+ public void setLargeFeatureWithSalt(long worldSeed, int regionX, int regionZ, int salt) {
+ super.setLargeFeatureWithSalt(worldSeed, regionX, regionZ, salt);
+ }
+
+ public static RandomSource seedSlimeChunk(int chunkX, int chunkZ) {
+ return new WorldgenCryptoRandom(chunkX, chunkZ, Globals.Salt.SLIME_CHUNK, 0);
+ }
+}
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