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matterMC/patches/server/0001-Feature-Secure-Seed.patch
Apehum cf08ab192b Update to 1.19 
caution: version not fully compatible with 1.18, structure locations are same but generation is different (it won't be fixed, so upgrade on your own risk)
2022-06-14 20:34:10 +08:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Apehum <apehumchik@gmail.com>
Date: Thu, 9 Dec 2021 02:18:17 +0800
Subject: [PATCH] Feature Secure Seed
diff --git a/src/main/java/net/minecraft/server/dedicated/DedicatedServerProperties.java b/src/main/java/net/minecraft/server/dedicated/DedicatedServerProperties.java
index 26345494ce190b5cd2ab58dd7d4b046796767b20..5212a4fc7ce68e4345882b9f25b7e410883a951d 100644
--- a/src/main/java/net/minecraft/server/dedicated/DedicatedServerProperties.java
+++ b/src/main/java/net/minecraft/server/dedicated/DedicatedServerProperties.java
@@ -148,7 +148,8 @@ public class DedicatedServerProperties extends Settings<DedicatedServerPropertie
this.playerIdleTimeout = this.getMutable("player-idle-timeout", 0);
this.whiteList = this.getMutable("white-list", false);
this.enforceSecureProfile = this.get("enforce-secure-profile", false);
- this.worldGenProperties = new DedicatedServerProperties.WorldGenProperties(this.get("level-seed", ""), (JsonObject) this.get("generator-settings", (s) -> {
+ // Matter - Feature Secure Seed
+ this.worldGenProperties = new DedicatedServerProperties.WorldGenProperties(this.get("level-seed", ""), this.get("feature-level-seed", ""), (JsonObject) this.get("generator-settings", (s) -> {
return GsonHelper.parse(!s.isEmpty() ? s : "{}");
}, new JsonObject()), this.get("generate-structures", true), (String) this.get("level-type", (s) -> {
return s.toLowerCase(Locale.ROOT);
@@ -225,10 +226,14 @@ public class DedicatedServerProperties extends Settings<DedicatedServerPropertie
return this.worldGenSettings;
}
- public static record WorldGenProperties(String levelSeed, JsonObject generatorSettings, boolean generateStructures, String levelType) {
-
+ public static record WorldGenProperties(String levelSeed, String featureSeed, JsonObject generatorSettings, boolean generateStructures, String levelType) {
private static final Map<String, ResourceKey<WorldPreset>> LEGACY_PRESET_NAMES = Map.of("default", WorldPresets.NORMAL, "largebiomes", WorldPresets.LARGE_BIOMES);
+ // Matter todo: check why?
+ public String featureSeed() {
+ return this.featureSeed;
+ }
+
public WorldGenSettings create(RegistryAccess dynamicRegistryManager) {
long i = WorldGenSettings.parseSeed(this.levelSeed()).orElse(RandomSource.create().nextLong());
Registry<WorldPreset> iregistry = dynamicRegistryManager.registryOrThrow(Registry.WORLD_PRESET_REGISTRY);
diff --git a/src/main/java/net/minecraft/server/level/ServerChunkCache.java b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
index 378cc1f9e19eb9b18037ab8af92f65897e15a405..33cb2fc823624b40a32c6f5513abb073214a8ffd 100644
--- a/src/main/java/net/minecraft/server/level/ServerChunkCache.java
+++ b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
@@ -48,6 +48,7 @@ import net.minecraft.world.level.storage.DimensionDataStorage;
import net.minecraft.world.level.storage.LevelData;
import net.minecraft.world.level.storage.LevelStorageSource;
import it.unimi.dsi.fastutil.objects.ReferenceOpenHashSet; // Paper
+import su.plo.matter.Globals;
public class ServerChunkCache extends ChunkSource {
@@ -1140,6 +1141,8 @@ public class ServerChunkCache extends ChunkSource {
}
public ChunkGenerator getGenerator() {
+ // Matter
+ Globals.setupGlobals(level);
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 8043a1aa9d785c78e220ea54a6ffa7388f2d501e..253698b4006ec45fa09198b8e39fddf33af3882b 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -170,6 +170,10 @@ import org.bukkit.event.world.TimeSkipEvent;
// CraftBukkit end
import it.unimi.dsi.fastutil.ints.IntArrayList; // Paper
+// Matter start
+import su.plo.matter.Globals;
+// Matter end
+
public class ServerLevel extends Level implements WorldGenLevel {
public static final BlockPos END_SPAWN_POINT = new BlockPos(100, 50, 0);
@@ -524,6 +528,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
}
chunkgenerator.conf = spigotConfig; // Spigot
// CraftBukkit end
+ Globals.setupGlobals(this); // Matter
boolean flag2 = minecraftserver.forceSynchronousWrites();
DataFixer datafixer = minecraftserver.getFixerUpper();
EntityPersistentStorage<Entity> entitypersistentstorage = new EntityStorage(this, convertable_conversionsession.getDimensionPath(resourcekey).resolve("entities"), datafixer, flag2, 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 7e85ad7ba31bbb32ea1e1dff5d1c83e7ce68b4b3..94a1868843407d421e6aa3b7719cff6727eb113c 100644
--- a/src/main/java/net/minecraft/world/entity/monster/Slime.java
+++ b/src/main/java/net/minecraft/world/entity/monster/Slime.java
@@ -338,7 +338,7 @@ public class Slime extends Mob implements Enemy {
}
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
+ boolean flag = world.getMinecraftWorld().paperConfig().entities.spawning.allChunksAreSlimeChunks || world.getChunk(chunkcoordintpair.x, chunkcoordintpair.z).isSlimeChunk(); // Spigot // Paper // Matter
// 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 8d7d10f620b30c35d2ef580ea914f2c62054a785..c06ee8618b58806e7114f0c253dcc48e4386bf14 100644
--- a/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java
+++ b/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java
@@ -50,6 +50,7 @@ import net.minecraft.world.level.material.Fluid;
import net.minecraft.world.ticks.SerializableTickContainer;
import net.minecraft.world.ticks.TickContainerAccess;
import org.slf4j.Logger;
+import su.plo.matter.WorldgenCryptoRandom;
public abstract class ChunkAccess implements BlockGetter, BiomeManager.NoiseBiomeSource, StructureAccess {
@@ -77,6 +78,11 @@ public abstract class ChunkAccess implements BlockGetter, BiomeManager.NoiseBiom
protected final LevelHeightAccessor levelHeightAccessor;
protected final LevelChunkSection[] sections;
+ // Matter start
+ private boolean slimeChunk;
+ private boolean hasComputedSlimeChunk;
+ // Matter 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);
@@ -147,6 +153,17 @@ public abstract class ChunkAccess implements BlockGetter, BiomeManager.NoiseBiom
public final Registry<Biome> biomeRegistry;
// CraftBukkit end
+ // Matter start
+ public boolean isSlimeChunk() {
+ if (!hasComputedSlimeChunk) {
+ hasComputedSlimeChunk = true;
+ slimeChunk = WorldgenCryptoRandom.seedSlimeChunk(chunkPos.x, chunkPos.z).nextInt(10) == 0;
+ }
+
+ return slimeChunk;
+ }
+ // Matter end
+
private static void replaceMissingSections(LevelHeightAccessor world, Registry<Biome> biome, LevelChunkSection[] sectionArray) {
for (int i = 0; i < sectionArray.length; ++i) {
if (sectionArray[i] == null) {
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 cdfe2589ca598263d58a11a978e176ab3ecb87e6..805510b9eeec2c48bfe2aae680483b1286daca24 100644
--- a/src/main/java/net/minecraft/world/level/chunk/ChunkGenerator.java
+++ b/src/main/java/net/minecraft/world/level/chunk/ChunkGenerator.java
@@ -86,6 +86,11 @@ import net.minecraft.world.level.levelgen.structure.templatesystem.StructureTemp
import org.apache.commons.lang3.mutable.MutableBoolean;
import org.slf4j.Logger;
+// Matter start
+import su.plo.matter.Globals;
+import su.plo.matter.WorldgenCryptoRandom;
+// Matter end
+
public abstract class ChunkGenerator {
private static final Logger LOGGER = LogUtils.getLogger();
@@ -234,15 +239,9 @@ public abstract class ChunkGenerator {
int j = concentricringsstructureplacement.count();
int k = concentricringsstructureplacement.spread();
HolderSet<Biome> holderset = concentricringsstructureplacement.preferredBiomes();
- RandomSource randomsource = RandomSource.create();
+ // Matter
+ RandomSource randomsource = new WorldgenCryptoRandom(0, 0, Globals.Salt.STRONGHOLDS, 0);
- // Paper start
- if (this.conf.strongholdSeed != null && this.structureSets.getResourceKey(holder).orElse(null) == net.minecraft.world.level.levelgen.structure.BuiltinStructureSets.STRONGHOLDS) {
- randomsource.setSeed(this.conf.strongholdSeed);
- } else {
- randomsource.setSeed(this instanceof FlatLevelSource ? 0L : randomstate.legacyLevelSeed());
- }
- // Paper end
double d0 = randomsource.nextDouble() * 3.141592653589793D * 2.0D;
int l = 0;
int i1 = 0;
@@ -514,8 +513,12 @@ public abstract class ChunkGenerator {
return structure.step().ordinal();
}));
List<FeatureSorter.StepFeatureData> list = (List) this.featuresPerStep.get();
- WorldgenRandom seededrandom = new WorldgenRandom(new XoroshiroRandomSource(RandomSupport.generateUniqueSeed()));
+ // Matter start - Feature Secure Seed
+ WorldgenRandom seededrandom = new WorldgenCryptoRandom(
+ blockposition.getX(), blockposition.getZ(), Globals.Salt.UNDEFINED, 0
+ );
long i = seededrandom.setDecorationSeed(generatoraccessseed.getSeed(), blockposition.getX(), blockposition.getZ());
+ // Matter end
Set<Holder<Biome>> set = new ObjectArraySet();
ChunkPos.rangeClosed(sectionposition.chunk(), 1).forEach((chunkcoordintpair1) -> {
@@ -774,9 +777,11 @@ public abstract class ChunkGenerator {
ArrayList<StructureSet.StructureSelectionEntry> arraylist = new ArrayList(list.size());
arraylist.addAll(list);
- WorldgenRandom seededrandom = new WorldgenRandom(new LegacyRandomSource(0L));
-
- seededrandom.setLargeFeatureSeed(seed, chunkcoordintpair.x, chunkcoordintpair.z);
+ // Matter start - Feature Secure Seed
+ WorldgenRandom seededrandom = new WorldgenCryptoRandom(
+ chunkcoordintpair.x, chunkcoordintpair.z, Globals.Salt.GENERATE_FEATURE, 0
+ );
+ // Matter end
int j = 0;
StructureSet.StructureSelectionEntry structureset_a1;
diff --git a/src/main/java/net/minecraft/world/level/chunk/ChunkStatus.java b/src/main/java/net/minecraft/world/level/chunk/ChunkStatus.java
index e6240f891e396d91e31b02fdf3084be77e9d6697..06d4013467b55bb5096f410eb1abb4bcbeb9e8a3 100644
--- a/src/main/java/net/minecraft/world/level/chunk/ChunkStatus.java
+++ b/src/main/java/net/minecraft/world/level/chunk/ChunkStatus.java
@@ -27,6 +27,10 @@ import net.minecraft.world.level.levelgen.Heightmap;
import net.minecraft.world.level.levelgen.blending.Blender;
import net.minecraft.world.level.levelgen.structure.templatesystem.StructureTemplateManager;
+// Matter start
+import su.plo.matter.Globals;
+// Matter end
+
public class ChunkStatus {
public static final int MAX_STRUCTURE_DISTANCE = 8;
@@ -270,6 +274,7 @@ public class ChunkStatus {
}
public CompletableFuture<Either<ChunkAccess, ChunkHolder.ChunkLoadingFailure>> generate(Executor executor, ServerLevel world, ChunkGenerator generator, StructureTemplateManager structureTemplateManager, ThreadedLevelLightEngine lightingProvider, Function<ChunkAccess, CompletableFuture<Either<ChunkAccess, ChunkHolder.ChunkLoadingFailure>>> fullChunkConverter, List<ChunkAccess> chunks, boolean regenerate) {
+ Globals.setupGlobals(world); // Matter
ChunkAccess ichunkaccess = (ChunkAccess) chunks.get(chunks.size() / 2);
ProfiledDuration profiledduration = JvmProfiler.INSTANCE.onChunkGenerate(ichunkaccess.getPos(), world.dimension(), this.name);
CompletableFuture<Either<ChunkAccess, ChunkHolder.ChunkLoadingFailure>> completablefuture = this.generationTask.doWork(this, executor, world, generator, structureTemplateManager, lightingProvider, fullChunkConverter, chunks, ichunkaccess, regenerate);
diff --git a/src/main/java/net/minecraft/world/level/levelgen/WorldGenSettings.java b/src/main/java/net/minecraft/world/level/levelgen/WorldGenSettings.java
index 503c23d15cdeaee84ab81859ceeafb0d437d2f6c..b6fd578921ad0656d51ffa1f3d065fdce628d217 100644
--- a/src/main/java/net/minecraft/world/level/levelgen/WorldGenSettings.java
+++ b/src/main/java/net/minecraft/world/level/levelgen/WorldGenSettings.java
@@ -23,9 +23,21 @@ import net.minecraft.world.level.dimension.DimensionType;
import net.minecraft.world.level.dimension.LevelStem;
import org.apache.commons.lang3.StringUtils;
+// Matter start
+import java.util.stream.LongStream;
+
+import su.plo.matter.Globals;
+// Matter end
+
public class WorldGenSettings {
- public static final Codec<WorldGenSettings> CODEC = RecordCodecBuilder.create((instance) -> {
- return instance.group(Codec.LONG.fieldOf("seed").stable().forGetter(WorldGenSettings::seed), Codec.BOOL.fieldOf("generate_features").orElse(true).stable().forGetter(WorldGenSettings::generateStructures), Codec.BOOL.fieldOf("bonus_chest").orElse(false).stable().forGetter(WorldGenSettings::generateBonusChest), RegistryCodecs.dataPackAwareCodec(Registry.LEVEL_STEM_REGISTRY, Lifecycle.stable(), LevelStem.CODEC).xmap(LevelStem::sortMap, Function.identity()).fieldOf("dimensions").forGetter(WorldGenSettings::dimensions), Codec.STRING.optionalFieldOf("legacy_custom_options").stable().forGetter((worldGenSettings) -> {
+ // Matter start - Feature Secure Seed
+ public static final Codec<WorldGenSettings> CODEC = RecordCodecBuilder.<WorldGenSettings>create((instance) -> {
+ return instance.group(Codec.LONG.fieldOf("seed").stable().forGetter(WorldGenSettings::seed),
+ Codec.LONG_STREAM.fieldOf("feature_seed").stable().forGetter((settings) -> LongStream.of(settings.featureSeed())),
+ Codec.BOOL.fieldOf("generate_features").orElse(true).stable().forGetter(WorldGenSettings::generateStructures),
+ Codec.BOOL.fieldOf("bonus_chest").orElse(false).stable().forGetter(WorldGenSettings::generateBonusChest),
+ RegistryCodecs.dataPackAwareCodec(Registry.LEVEL_STEM_REGISTRY, Lifecycle.stable(), LevelStem.CODEC).xmap(LevelStem::sortMap, Function.identity()).fieldOf("dimensions").forGetter(WorldGenSettings::dimensions),
+ Codec.STRING.optionalFieldOf("legacy_custom_options").stable().forGetter((worldGenSettings) -> { // Matter end
return worldGenSettings.legacyCustomOptions;
})).apply(instance, instance.stable(WorldGenSettings::new));
}).comapFlatMap(WorldGenSettings::guardExperimental, Function.identity());
@@ -35,6 +47,9 @@ public class WorldGenSettings {
private final Registry<LevelStem> dimensions;
private final Optional<String> legacyCustomOptions;
+ // Matter - Feature Secure Seed
+ private final long[] featureSeed;
+
private DataResult<WorldGenSettings> guardExperimental() {
LevelStem levelStem = this.dimensions.get(LevelStem.OVERWORLD);
if (levelStem == null) {
@@ -48,15 +63,24 @@ public class WorldGenSettings {
return LevelStem.stable(this.dimensions);
}
- public WorldGenSettings(long seed, boolean generateStructures, boolean bonusChest, Registry<LevelStem> options) {
- this(seed, generateStructures, bonusChest, options, Optional.empty());
+ // Matter start - Feature Secure Seed
+ public WorldGenSettings(long seed, long[] featureSeed, boolean generateStructures, boolean bonusChest, Registry<LevelStem> options) {
+ this(seed, featureSeed, generateStructures, bonusChest, options, Optional.empty());
+ // Matter end - Feature Secure Seed
LevelStem levelStem = options.get(LevelStem.OVERWORLD);
if (levelStem == null) {
throw new IllegalStateException("Overworld settings missing");
}
}
- private WorldGenSettings(long seed, boolean generateStructures, boolean bonusChest, Registry<LevelStem> options, Optional<String> legacyCustomOptions) {
+ // Matter start - Feature Secure Seed
+ private WorldGenSettings(long seed, LongStream featureSeed, boolean generateStructures, boolean bonusChest, Registry<LevelStem> options, Optional<String> legacyCustomOptions) {
+ this(seed, featureSeed.toArray(), generateStructures, bonusChest, options, legacyCustomOptions);
+ }
+
+ private WorldGenSettings(long seed, long[] featureSeed, boolean generateStructures, boolean bonusChest, Registry<LevelStem> options, Optional<String> legacyCustomOptions) {
+ this.featureSeed = featureSeed;
+ // Matter end - Feature Secure Seed
this.seed = seed;
this.generateStructures = generateStructures;
this.generateBonusChest = bonusChest;
@@ -68,6 +92,12 @@ public class WorldGenSettings {
return this.seed;
}
+ // Matter start - Feature Secure Seed
+ public long[] featureSeed() {
+ return this.featureSeed;
+ }
+ // Matter end
+
public boolean generateStructures() {
return this.generateStructures;
}
@@ -79,7 +109,8 @@ public class WorldGenSettings {
public static WorldGenSettings replaceOverworldGenerator(RegistryAccess dynamicRegistryManager, WorldGenSettings generatorOptions, ChunkGenerator chunkGenerator) {
Registry<DimensionType> registry = dynamicRegistryManager.registryOrThrow(Registry.DIMENSION_TYPE_REGISTRY);
Registry<LevelStem> registry2 = withOverworld(registry, generatorOptions.dimensions(), chunkGenerator);
- return new WorldGenSettings(generatorOptions.seed(), generatorOptions.generateStructures(), generatorOptions.generateBonusChest(), registry2);
+ // Matter - Feature Secure Seed
+ return new WorldGenSettings(generatorOptions.seed(), Globals.createRandomWorldSeed(), generatorOptions.generateStructures(), generatorOptions.generateBonusChest(), registry2);
}
public static Registry<LevelStem> withOverworld(Registry<DimensionType> dimensionTypeRegistry, Registry<LevelStem> options, ChunkGenerator overworldGenerator) {
@@ -140,19 +171,24 @@ public class WorldGenSettings {
}
public WorldGenSettings withBonusChest() {
- return new WorldGenSettings(this.seed, this.generateStructures, true, this.dimensions, this.legacyCustomOptions);
+ // Matter - Feature Secure Seed
+ return new WorldGenSettings(this.seed, this.featureSeed, this.generateStructures, true, this.dimensions, this.legacyCustomOptions);
}
public WorldGenSettings withStructuresToggled() {
- return new WorldGenSettings(this.seed, !this.generateStructures, this.generateBonusChest, this.dimensions);
+ // Matter - Feature Secure Seed
+ return new WorldGenSettings(this.seed, this.featureSeed, !this.generateStructures, this.generateBonusChest, this.dimensions);
}
public WorldGenSettings withBonusChestToggled() {
- return new WorldGenSettings(this.seed, this.generateStructures, !this.generateBonusChest, this.dimensions);
+ // Matter - Feature Secure Seed
+ return new WorldGenSettings(this.seed, this.featureSeed, this.generateStructures, !this.generateBonusChest, this.dimensions);
}
public WorldGenSettings withSeed(boolean hardcore, OptionalLong seed) {
long l = seed.orElse(this.seed);
+ // Matter - Feature Secure Seed
+ long[] featureSeed = Globals.createRandomWorldSeed();
Registry<LevelStem> registry;
if (seed.isPresent()) {
WritableRegistry<LevelStem> writableRegistry = new MappedRegistry<>(Registry.LEVEL_STEM_REGISTRY, Lifecycle.experimental(), (Function<LevelStem, Holder.Reference<LevelStem>>)null);
@@ -169,9 +205,11 @@ public class WorldGenSettings {
WorldGenSettings worldGenSettings;
if (this.isDebug()) {
- worldGenSettings = new WorldGenSettings(l, false, false, registry);
+ // Matter - Feature Secure Seed
+ worldGenSettings = new WorldGenSettings(l, featureSeed, false, false, registry);
} else {
- worldGenSettings = new WorldGenSettings(l, this.generateStructures(), this.generateBonusChest() && !hardcore, registry);
+ // Matter - Feature Secure Seed
+ worldGenSettings = new WorldGenSettings(l, featureSeed, this.generateStructures(), this.generateBonusChest() && !hardcore, registry);
}
return worldGenSettings;
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 512942f75552b0b068e9eebcee55ee9d0ac6e5d7..53f8db3b881a1edc6729e7b4730f2f4de3cf8ec1 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
@@ -25,6 +25,11 @@ import net.minecraft.world.level.levelgen.feature.configurations.GeodeConfigurat
import net.minecraft.world.level.levelgen.synth.NormalNoise;
import net.minecraft.world.level.material.FluidState;
+// Matter start
+import su.plo.matter.Globals;
+import su.plo.matter.WorldgenCryptoRandom;
+// Matter end
+
public class GeodeFeature extends Feature<GeodeConfiguration> {
private static final Direction[] DIRECTIONS = Direction.values();
@@ -42,7 +47,8 @@ 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()));
+ // Matter - Feature Secure Seed
+ WorldgenRandom worldgenRandom = new WorldgenCryptoRandom(0, 0, Globals.Salt.GEODE_FEATURE, 0);
NormalNoise normalNoise = NormalNoise.create(worldgenRandom, -4, 1.0D);
List<BlockPos> list2 = Lists.newLinkedList();
double d = (double)k / (double)geodeConfiguration.outerWallDistance.getMaxValue();
diff --git a/src/main/java/net/minecraft/world/level/levelgen/presets/WorldPreset.java b/src/main/java/net/minecraft/world/level/levelgen/presets/WorldPreset.java
index a2f448d3eb94bdfc99c4810cca08b56741c0b0b5..ec21a02832e88eba5d2566b557cc887006b62786 100644
--- a/src/main/java/net/minecraft/world/level/levelgen/presets/WorldPreset.java
+++ b/src/main/java/net/minecraft/world/level/levelgen/presets/WorldPreset.java
@@ -16,8 +16,13 @@ import net.minecraft.resources.ResourceKey;
import net.minecraft.world.level.dimension.LevelStem;
import net.minecraft.world.level.levelgen.WorldGenSettings;
+// Matter start
+import su.plo.matter.Globals;
+// Matter end
+
public class WorldPreset {
- public static final Codec<WorldPreset> DIRECT_CODEC = RecordCodecBuilder.create((instance) -> {
+ // Matter - compile fix
+ public static final Codec<WorldPreset> DIRECT_CODEC = RecordCodecBuilder.<WorldPreset>create((instance) -> {
return instance.group(Codec.unboundedMap(ResourceKey.codec(Registry.LEVEL_STEM_REGISTRY), LevelStem.CODEC).fieldOf("dimensions").forGetter((preset) -> {
return preset.dimensions;
})).apply(instance, WorldPreset::new);
@@ -42,7 +47,8 @@ public class WorldPreset {
}
public WorldGenSettings createWorldGenSettings(long seed, boolean generateStructures, boolean bonusChest) {
- return new WorldGenSettings(seed, generateStructures, bonusChest, this.createRegistry());
+ // Matter - Feature Secure Seed
+ return new WorldGenSettings(seed, Globals.createRandomWorldSeed(), generateStructures, bonusChest, this.createRegistry());
}
public WorldGenSettings recreateWorldGenSettings(WorldGenSettings generatorOptions) {
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 b8649eab719a1b71dc686386a8db756eefb9802e..9508419308c82e5935a858233d04e327365c00ff 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
@@ -37,6 +37,11 @@ import net.minecraft.world.level.levelgen.structure.pieces.PiecesContainer;
import net.minecraft.world.level.levelgen.structure.pieces.StructurePiecesBuilder;
import net.minecraft.world.level.levelgen.structure.templatesystem.StructureTemplateManager;
+// Matter start
+import su.plo.matter.Globals;
+import su.plo.matter.WorldgenCryptoRandom;
+// Matter end
+
public abstract class Structure {
public static final Codec<Structure> DIRECT_CODEC = Registry.STRUCTURE_TYPES.byNameCodec().dispatch(Structure::type, StructureType::codec);
public static final Codec<Holder<Structure>> CODEC = RegistryFileCodec.create(Registry.STRUCTURE_REGISTRY, DIRECT_CODEC);
@@ -157,9 +162,11 @@ public abstract class Structure {
}
private static WorldgenRandom makeRandom(long seed, ChunkPos chunkPos) {
- WorldgenRandom worldgenRandom = new WorldgenRandom(new LegacyRandomSource(0L));
- worldgenRandom.setLargeFeatureSeed(seed, chunkPos.x, chunkPos.z);
- return worldgenRandom;
+ // Matter start - Feature Secure Seed
+ return new WorldgenCryptoRandom(
+ chunkPos.x, chunkPos.z, Globals.Salt.GENERATE_FEATURE, seed
+ );
+ // Matter end
}
}
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 638e2c868342ae133717936487d4048cde2fafc0..26f9afc05f843addaf05e7df9329b8d075f11321 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
@@ -11,8 +11,13 @@ import net.minecraft.world.level.levelgen.LegacyRandomSource;
import net.minecraft.world.level.levelgen.RandomState;
import net.minecraft.world.level.levelgen.WorldgenRandom;
+// Matter start
+import su.plo.matter.Globals;
+import su.plo.matter.WorldgenCryptoRandom;
+// Matter end
+
public class RandomSpreadStructurePlacement extends StructurePlacement {
- public static final Codec<RandomSpreadStructurePlacement> CODEC = RecordCodecBuilder.mapCodec((instance) -> {
+ public static final Codec<RandomSpreadStructurePlacement> CODEC = RecordCodecBuilder.<RandomSpreadStructurePlacement>mapCodec((instance) -> { // Matter - compile fix
return placementCodec(instance).and(instance.group(Codec.intRange(0, 4096).fieldOf("spacing").forGetter(RandomSpreadStructurePlacement::spacing), Codec.intRange(0, 4096).fieldOf("separation").forGetter(RandomSpreadStructurePlacement::separation), RandomSpreadType.CODEC.optionalFieldOf("spread_type", RandomSpreadType.LINEAR).forGetter(RandomSpreadStructurePlacement::spreadType))).apply(instance, RandomSpreadStructurePlacement::new);
}).flatXmap((placement) -> {
return placement.spacing <= placement.separation ? DataResult.error("Spacing has to be larger than separation") : DataResult.success(placement);
@@ -47,8 +52,11 @@ public class RandomSpreadStructurePlacement extends StructurePlacement {
public ChunkPos getPotentialStructureChunk(long seed, int x, int z) {
int i = Math.floorDiv(x, this.spacing);
int j = Math.floorDiv(z, this.spacing);
- WorldgenRandom worldgenRandom = new WorldgenRandom(new LegacyRandomSource(0L));
- worldgenRandom.setLargeFeatureWithSalt(seed, i, j, this.salt());
+ // Matter start
+ WorldgenRandom worldgenRandom = new WorldgenCryptoRandom(
+ i, j, Globals.Salt.POTENTIONAL_FEATURE, this.salt
+ );
+ // Matter 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 df4ef6c9dd5747f7d8eebeff149bcfab96832864..10c9308537a2e7ae9b466712863b1eaa6b066f02 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
@@ -17,6 +17,8 @@ import net.minecraft.world.level.levelgen.LegacyRandomSource;
import net.minecraft.world.level.levelgen.RandomState;
import net.minecraft.world.level.levelgen.WorldgenRandom;
import net.minecraft.world.level.levelgen.structure.StructureSet;
+import su.plo.matter.Globals;
+import su.plo.matter.WorldgenCryptoRandom;
public abstract class StructurePlacement {
public static final Codec<StructurePlacement> CODEC = Registry.STRUCTURE_PLACEMENT_TYPE.byNameCodec().dispatch(StructurePlacement::type, StructurePlacementType::codec);
@@ -78,32 +80,43 @@ public abstract class StructurePlacement {
public abstract StructurePlacementType<?> type();
private static boolean probabilityReducer(long seed, int regionX, int regionZ, int salt, float frequency) {
- WorldgenRandom worldgenRandom = new WorldgenRandom(new LegacyRandomSource(0L));
- worldgenRandom.setLargeFeatureWithSalt(seed, regionX, regionZ, salt);
+ // Matter start
+ WorldgenRandom worldgenRandom = new WorldgenCryptoRandom(
+ regionX, regionZ, Globals.Salt.UNDEFINED, salt
+ );
+ // Matter end
return worldgenRandom.nextFloat() < frequency;
}
private static boolean legacyProbabilityReducerWithDouble(long seed, int i, int chunkX, int chunkZ, float frequency) {
- WorldgenRandom worldgenRandom = new WorldgenRandom(new LegacyRandomSource(0L));
- worldgenRandom.setLargeFeatureSeed(seed, chunkX, chunkZ);
+ // Matter start
+ WorldgenRandom worldgenRandom = new WorldgenCryptoRandom(
+ chunkX, chunkZ, Globals.Salt.MINESHAFT_FEATURE, 0
+ );
+ // Matter end
return worldgenRandom.nextDouble() < (double)frequency;
}
private static boolean legacyArbitrarySaltProbabilityReducer(long seed, int i, int regionX, int regionZ, float frequency) {
- WorldgenRandom worldgenRandom = new WorldgenRandom(new LegacyRandomSource(0L));
- worldgenRandom.setLargeFeatureWithSalt(seed, regionX, regionZ, 10387320);
+ // Matter start
+ WorldgenRandom worldgenRandom = new WorldgenCryptoRandom(
+ regionX, regionZ, Globals.Salt.BURIED_TREASURE_FEATURE, 0
+ );
+ // Matter end
return worldgenRandom.nextFloat() < frequency;
}
private static boolean legacyPillagerOutpostReducer(long seed, int i, int j, int k, float frequency) {
int l = j >> 4;
int m = k >> 4;
- WorldgenRandom worldgenRandom = new WorldgenRandom(new LegacyRandomSource(0L));
- worldgenRandom.setSeed((long)(l ^ m << 4) ^ seed);
+ // Matter - Secure Feature Seed
+ WorldgenRandom worldgenRandom = new WorldgenCryptoRandom(
+ l, m, Globals.Salt.PILLAGER_OUTPOST_FEATURE, 0
+ );
+ // Matter end
worldgenRandom.nextInt();
return worldgenRandom.nextInt((int)(1.0F / frequency)) == 0;
}
-
/** @deprecated */
@Deprecated
public static record ExclusionZone(Holder<StructureSet> otherSet, int chunkCount) {
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 33a886cd55bb6af2e4b8fcc6bb05465ee3fe4186..f058feee1b62ba20102e6d3ff0eac1df7e07c7c0 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
@@ -40,6 +40,11 @@ import net.minecraft.world.phys.shapes.VoxelShape;
import org.apache.commons.lang3.mutable.MutableObject;
import org.slf4j.Logger;
+// Matter start
+import su.plo.matter.Globals;
+import su.plo.matter.WorldgenCryptoRandom;
+// Matter end
+
public class JigsawPlacement {
static final Logger LOGGER = LogUtils.getLogger();
@@ -48,7 +53,11 @@ public class JigsawPlacement {
ChunkGenerator chunkGenerator = context.chunkGenerator();
StructureTemplateManager structureTemplateManager = context.structureTemplateManager();
LevelHeightAccessor levelHeightAccessor = context.heightAccessor();
- WorldgenRandom worldgenRandom = context.random();
+ // Matter start
+ WorldgenRandom worldgenRandom = new WorldgenCryptoRandom(
+ context.chunkPos().x, context.chunkPos().z, Globals.Salt.JIGSAW_PLACEMENT, 0
+ );
+ // Matter end
Registry<StructureTemplatePool> registry = registryAccess.registryOrThrow(Registry.TEMPLATE_POOL_REGISTRY);
Rotation rotation = Rotation.getRandom(worldgenRandom);
StructureTemplatePool structureTemplatePool = structurePool.value();
@@ -235,18 +244,21 @@ public class JigsawPlacement {
if (!boundingBox2.isInside(structureBlockInfox.pos.relative(JigsawBlock.getFrontFacing(structureBlockInfox.state)))) {
return 0;
} else {
- ResourceLocation resourceLocation = new ResourceLocation(structureBlockInfox.nbt.getString("pool"));
- Optional<StructureTemplatePool> optional = this.pools.getOptional(resourceLocation);
- Optional<StructureTemplatePool> optional2 = optional.flatMap((pool) -> {
+ // Mater start - compile fix
+ ResourceLocation poolLocation = new ResourceLocation(structureBlockInfox.nbt.getString("pool"));
+ Optional<StructureTemplatePool> pool1 = this.pools.getOptional(poolLocation);
+ Optional<StructureTemplatePool> pool2 = pool1.flatMap((pool) -> {
return this.pools.getOptional(pool.getFallback());
});
- int i = optional.map((pool) -> {
+
+ int i1 = pool1.map((pool) -> {
return pool.getMaxSize(this.structureTemplateManager);
}).orElse(0);
- int j = optional2.map((pool) -> {
+ int j1 = pool2.map((pool) -> {
return pool.getMaxSize(this.structureTemplateManager);
}).orElse(0);
- return Math.max(i, j);
+ return Math.max(i1, j1);
+ // Mater end - compile fix
}
}).max().orElse(0);
} else {
diff --git a/src/main/java/net/minecraft/world/level/levelgen/structure/structures/EndCityStructure.java b/src/main/java/net/minecraft/world/level/levelgen/structure/structures/EndCityStructure.java
index 2d4a14e8c3f876186c417b9e4284a95f65cf9cd5..991010f818dcb26581a09341201087379b52ee04 100644
--- a/src/main/java/net/minecraft/world/level/levelgen/structure/structures/EndCityStructure.java
+++ b/src/main/java/net/minecraft/world/level/levelgen/structure/structures/EndCityStructure.java
@@ -10,6 +10,7 @@ import net.minecraft.world.level.levelgen.structure.Structure;
import net.minecraft.world.level.levelgen.structure.StructurePiece;
import net.minecraft.world.level.levelgen.structure.StructureType;
import net.minecraft.world.level.levelgen.structure.pieces.StructurePiecesBuilder;
+import su.plo.matter.WorldgenCryptoRandom;
public class EndCityStructure extends Structure {
public static final Codec<EndCityStructure> CODEC = simpleCodec(EndCityStructure::new);
diff --git a/src/main/java/net/minecraft/world/level/levelgen/structure/structures/MineshaftStructure.java b/src/main/java/net/minecraft/world/level/levelgen/structure/structures/MineshaftStructure.java
index 36cd894c3a9261d6c3bda7178f4b4d4f1045bd11..e9cade3b86f6e24c6fa2064d6bbb92b322e640c8 100644
--- a/src/main/java/net/minecraft/world/level/levelgen/structure/structures/MineshaftStructure.java
+++ b/src/main/java/net/minecraft/world/level/levelgen/structure/structures/MineshaftStructure.java
@@ -17,6 +17,7 @@ import net.minecraft.world.level.levelgen.WorldgenRandom;
import net.minecraft.world.level.levelgen.structure.Structure;
import net.minecraft.world.level.levelgen.structure.StructureType;
import net.minecraft.world.level.levelgen.structure.pieces.StructurePiecesBuilder;
+import su.plo.matter.WorldgenCryptoRandom;
public class MineshaftStructure extends Structure {
public static final Codec<MineshaftStructure> CODEC = RecordCodecBuilder.create((instance) -> {
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftChunk.java b/src/main/java/org/bukkit/craftbukkit/CraftChunk.java
index 947b0b10fb965f30513fd0df5bc0910fb9cb9a71..05d7e197da45579a28ef0180d6f43a5ab1da794f 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftChunk.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftChunk.java
@@ -207,7 +207,8 @@ 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
+ // Matter - Feature Secure Seed
+ return this.worldServer.paperConfig().entities.spawning.allChunksAreSlimeChunks ||worldServer.getChunk(this.getX(), this.getZ()).isSlimeChunk();
}
@Override
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index 7899ae5e60ee2b30c6d4d7056c59bb38cc05b7c8..c8ce729ea50ed2f4bdd2cafdadb7278cfef1f5a2 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -238,6 +238,7 @@ import org.yaml.snakeyaml.constructor.SafeConstructor;
import org.yaml.snakeyaml.error.MarkedYAMLException;
import net.md_5.bungee.api.chat.BaseComponent; // Spigot
+import su.plo.matter.Globals;
import javax.annotation.Nullable; // Paper
import javax.annotation.Nonnull; // Paper
@@ -1193,7 +1194,8 @@ public final class CraftServer implements Server {
LevelSettings worldSettings;
// See MinecraftServer.a(String, String, long, WorldType, JsonElement)
if (worlddata == null) {
- DedicatedServerProperties.WorldGenProperties properties = new DedicatedServerProperties.WorldGenProperties(Objects.toString(creator.seed()), GsonHelper.parse((creator.generatorSettings().isEmpty()) ? "{}" : creator.generatorSettings()), creator.generateStructures(), creator.type().name().toLowerCase(Locale.ROOT));
+ // Matter
+ DedicatedServerProperties.WorldGenProperties properties = new DedicatedServerProperties.WorldGenProperties(Objects.toString(creator.seed()), Globals.seedToString(Globals.createRandomWorldSeed()), GsonHelper.parse((creator.generatorSettings().isEmpty()) ? "{}" : creator.generatorSettings()), creator.generateStructures(), creator.type().name().toLowerCase(Locale.ROOT));
WorldGenSettings generatorsettings = properties.create(this.console.registryAccess());
worldSettings = new LevelSettings(name, GameType.byId(this.getDefaultGameMode().getValue()), hardcore, Difficulty.EASY, false, new GameRules(), console.datapackconfiguration);
diff --git a/src/main/java/su/plo/matter/Globals.java b/src/main/java/su/plo/matter/Globals.java
new file mode 100644
index 0000000000000000000000000000000000000000..c8f77c791ce10bb85244c55682c743a7bd65f8d6
--- /dev/null
+++ b/src/main/java/su/plo/matter/Globals.java
@@ -0,0 +1,87 @@
+package su.plo.matter;
+
+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) {
+ long[] seed = world.getServer().getWorldData().worldGenSettings().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;
+ }
+
+ public static Optional<long[]> parseSeed(String seedStr) {
+ if (seedStr.isEmpty()) return Optional.empty();
+
+ try {
+ long[] seed = new long[WORLD_SEED_LONGS];
+ BigInteger seedBigInt = new BigInteger(seedStr);
+ if (seedBigInt.signum() < 0) {
+ seedBigInt = seedBigInt.and(BigInteger.ONE.shiftLeft(WORLD_SEED_BITS).subtract(BigInteger.ONE));
+ }
+ for (int i = 0; i < WORLD_SEED_LONGS; i++) {
+ BigInteger[] divRem = seedBigInt.divideAndRemainder(BigInteger.ONE.shiftLeft(64));
+ seed[i] = divRem[1].longValue();
+ seedBigInt = divRem[0];
+ }
+ return Optional.of(seed);
+ } catch (NumberFormatException ignored) {
+ return Optional.empty();
+ }
+ }
+
+ public static String seedToString(long[] seed) {
+ BigInteger seedBigInt = BigInteger.ZERO;
+ for (int i = WORLD_SEED_LONGS - 1; i >= 0; i--) {
+ BigInteger val = BigInteger.valueOf(seed[i]);
+ if (val.signum() < 0) {
+ val = val.add(BigInteger.ONE.shiftLeft(64));
+ }
+ seedBigInt = seedBigInt.shiftLeft(64).add(val);
+ }
+
+ return seedBigInt.toString();
+ }
+}
diff --git a/src/main/java/su/plo/matter/Hashing.java b/src/main/java/su/plo/matter/Hashing.java
new file mode 100644
index 0000000000000000000000000000000000000000..d18b15ca0b6585f08b30b019c8c17a0f641c8be0
--- /dev/null
+++ b/src/main/java/su/plo/matter/Hashing.java
@@ -0,0 +1,74 @@
+package su.plo.matter;
+
+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/su/plo/matter/WorldgenCryptoRandom.java b/src/main/java/su/plo/matter/WorldgenCryptoRandom.java
new file mode 100644
index 0000000000000000000000000000000000000000..1d76b84a4d9eeeb975efe9d7ba2440d31ab41ce7
--- /dev/null
+++ b/src/main/java/su/plo/matter/WorldgenCryptoRandom.java
@@ -0,0 +1,140 @@
+package su.plo.matter;
+
+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 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));
+ 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 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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