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DivineMC/divinemc-server/minecraft-patches/features/0005-Paper-PR-Throttle-failed-spawn-attempts.patch
2025-10-11 01:35:35 +03:00

324 lines
18 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: NONPLAYT <76615486+NONPLAYT@users.noreply.github.com>
Date: Thu, 27 Mar 2025 00:04:19 +0300
Subject: [PATCH] Paper PR: Throttle failed spawn attempts
Original license: GPLv3
Original project: https://github.com/PaperMC/Paper
Paper pull request: https://github.com/PaperMC/Paper/pull/11099
Example config in paper-world-defaults.yml:
```
spawning-throttle:
failed-attempts-threshold: 1200
throttled-ticks-per-spawn:
ambient: 10 # default value in bukkit.yml tickers-per * 10
axolotls: 10
creature: 4000
monster: 10
underground_water_creature: 10
water_ambient: 10
water_creature: 10
```
diff --git a/net/minecraft/world/level/NaturalSpawner.java b/net/minecraft/world/level/NaturalSpawner.java
index b3649c97e5452d8cc6b7230891e827c6b460af44..f233841c43a0b3f71ed5a90b4df7d8b4902a642d 100644
--- a/net/minecraft/world/level/NaturalSpawner.java
+++ b/net/minecraft/world/level/NaturalSpawner.java
@@ -160,29 +160,52 @@ public final class NaturalSpawner {
// Copied from getFilteredSpawningCategories
int limit = mobCategory.getMaxInstancesPerChunk();
org.bukkit.entity.SpawnCategory spawnCategory = org.bukkit.craftbukkit.util.CraftSpawnCategory.toBukkit(mobCategory);
+ // Paper start - throttle failed spawn attempts
+ boolean spawnThisTick = true;
+ long ticksPerSpawn = level.ticksPerSpawnCategory.getLong(spawnCategory);
+ long ticksPerSpawnTmp = ticksPerSpawn;
+ io.papermc.paper.configuration.WorldConfiguration.Entities.Spawning.SpawningThrottle spawningThrottle = level.paperConfig().entities.spawning.spawningThrottle;
+ if (spawningThrottle.failedAttemptsThreshold.test(threshold -> chunk.failedSpawnAttempts[mobCategory.ordinal()] > threshold)) {
+ ticksPerSpawn = Math.max(ticksPerSpawn, spawningThrottle.throttledTicksPerSpawn.getOrDefault(mobCategory, -1));
+ }
+ // Paper end - throttle failed spawn attempts
if (org.bukkit.craftbukkit.util.CraftSpawnCategory.isValidForLimits(spawnCategory)) {
+ spawnThisTick = ticksPerSpawnTmp != 0 && level.getGameTime() % ticksPerSpawn == 0; // Paper - throttle failed spawn attempts
limit = level.getWorld().getSpawnLimit(spawnCategory);
}
- // Apply per-player limit
- int minDiff = Integer.MAX_VALUE;
- final ca.spottedleaf.moonrise.common.list.ReferenceList<net.minecraft.server.level.ServerPlayer> inRange =
- level.moonrise$getNearbyPlayers().getPlayers(chunk.getPos(), ca.spottedleaf.moonrise.common.misc.NearbyPlayers.NearbyMapType.TICK_VIEW_DISTANCE);
- if (inRange != null) {
- final net.minecraft.server.level.ServerPlayer[] backingSet = inRange.getRawDataUnchecked();
- for (int k = 0, len = inRange.size(); k < len; k++) {
- minDiff = Math.min(limit - level.getChunkSource().chunkMap.getMobCountNear(backingSet[k], mobCategory), minDiff);
+ // Paper start - throttle failed spawn attempts
+ if (!spawningThrottle.failedAttemptsThreshold.enabled() || spawnThisTick) {
+ // Apply per-player limit
+ int minDiff = Integer.MAX_VALUE;
+ final ca.spottedleaf.moonrise.common.list.ReferenceList<net.minecraft.server.level.ServerPlayer> inRange =
+ level.moonrise$getNearbyPlayers().getPlayers(chunk.getPos(), ca.spottedleaf.moonrise.common.misc.NearbyPlayers.NearbyMapType.TICK_VIEW_DISTANCE);
+ if (inRange != null) {
+ final net.minecraft.server.level.ServerPlayer[] backingSet = inRange.getRawDataUnchecked();
+ for (int k = 0, len = inRange.size(); k < len; k++) {
+ minDiff = Math.min(limit - level.getChunkSource().chunkMap.getMobCountNear(backingSet[k], mobCategory), minDiff);
+ }
}
- }
- maxSpawns = (minDiff == Integer.MAX_VALUE) ? 0 : minDiff;
- canSpawn = maxSpawns > 0;
+ maxSpawns = (minDiff == Integer.MAX_VALUE) ? 0 : minDiff;
+ canSpawn = maxSpawns > 0;
+ } else {
+ canSpawn = false;
+ }
+ // Paper end - throttle failed spawn attempts
} else {
canSpawn = spawnState.canSpawnForCategoryLocal(mobCategory, chunk.getPos());
}
if (canSpawn) {
- spawnCategoryForChunk(mobCategory, level, chunk, spawnState::canSpawn, spawnState::afterSpawn,
+ // Paper start - throttle failed spawn attempts
+ int spawnCount = spawnCategoryForChunk(mobCategory, level, chunk, spawnState::canSpawn, spawnState::afterSpawn,
maxSpawns, level.paperConfig().entities.spawning.perPlayerMobSpawns ? level.getChunkSource().chunkMap::updatePlayerMobTypeMap : null);
+ if (spawnCount == 0) {
+ chunk.failedSpawnAttempts[mobCategory.ordinal()]++;
+ } else {
+ chunk.failedSpawnAttempts[mobCategory.ordinal()] = 0;
+ }
+ // Paper end - throttle failed spawn attempts
// Paper end - Optional per player mob spawns
}
}
@@ -204,14 +227,16 @@ public final class NaturalSpawner {
// Paper start - Optional per player mob spawns
spawnCategoryForChunk(category, level, chunk, filter, callback, Integer.MAX_VALUE, null);
}
- public static void spawnCategoryForChunk(
+ public static int spawnCategoryForChunk( // Paper - throttle failed spawn attempts
MobCategory category, ServerLevel level, LevelChunk chunk, NaturalSpawner.SpawnPredicate filter, NaturalSpawner.AfterSpawnCallback callback, final int maxSpawns, final Consumer<Entity> trackEntity
) {
// Paper end - Optional per player mob spawns
BlockPos randomPosWithin = getRandomPosWithin(level, chunk);
if (randomPosWithin.getY() >= level.getMinY() + 1) {
- spawnCategoryForPosition(category, level, chunk, randomPosWithin, filter, callback, maxSpawns, trackEntity); // Paper - Optional per player mob spawns
+ return spawnCategoryForPosition(category, level, chunk, randomPosWithin, filter, callback, maxSpawns, trackEntity); // Paper - Optional per player mob spawns // Paper - throttle failed spawn attempts
}
+
+ return 0; // Paper - throttle failed spawn attempts
}
@VisibleForDebug
@@ -229,18 +254,17 @@ public final class NaturalSpawner {
) {
spawnCategoryForPosition(category, level, chunk, pos, filter, callback, Integer.MAX_VALUE, null);
}
- public static void spawnCategoryForPosition(
+ public static int spawnCategoryForPosition( // Paper - throttle failed spawn attempts
MobCategory category, ServerLevel level, ChunkAccess chunk, BlockPos pos, NaturalSpawner.SpawnPredicate filter, NaturalSpawner.AfterSpawnCallback callback, final int maxSpawns, final @Nullable Consumer<Entity> trackEntity
) {
// Paper end - Optional per player mob spawns
StructureManager structureManager = level.structureManager();
ChunkGenerator generator = level.getChunkSource().getGenerator();
int y = pos.getY();
+ int i = 0; // Paper - throttle failed spawn attempts
BlockState blockState = level.getBlockStateIfLoadedAndInBounds(pos); // Paper - don't load chunks for mob spawn
if (blockState != null && !blockState.isRedstoneConductor(chunk, pos)) { // Paper - don't load chunks for mob spawn
BlockPos.MutableBlockPos mutableBlockPos = new BlockPos.MutableBlockPos();
- int i = 0;
-
for (int i1 = 0; i1 < 3; i1++) {
int x = pos.getX();
int z = pos.getZ();
@@ -280,14 +304,14 @@ public final class NaturalSpawner {
}
// Paper end - per player mob count backoff
if (doSpawning == PreSpawnStatus.ABORT) {
- return;
+ return i; // Paper - throttle failed spawn attempts
}
if (doSpawning == PreSpawnStatus.SUCCESS
// Paper end - PreCreatureSpawnEvent
&& filter.test(spawnerData.type(), mutableBlockPos, chunk)) {
Mob mobForSpawn = getMobForSpawn(level, spawnerData.type());
if (mobForSpawn == null) {
- return;
+ return i; // Paper - throttle failed spawn attempts
}
mobForSpawn.snapTo(d, y, d1, level.random.nextFloat() * 360.0F, 0.0F);
@@ -310,7 +334,7 @@ public final class NaturalSpawner {
}
// CraftBukkit end
if (i >= mobForSpawn.getMaxSpawnClusterSize() || i >= maxSpawns) { // Paper - Optional per player mob spawns
- return;
+ return i; // Paper - throttle failed spawn attempts
}
if (mobForSpawn.isMaxGroupSizeReached(i3)) {
@@ -323,6 +347,8 @@ public final class NaturalSpawner {
}
}
}
+
+ return i; // Paper - throttle failed spawn attempts
}
private static boolean isRightDistanceToPlayerAndSpawnPoint(ServerLevel level, ChunkAccess chunk, BlockPos.MutableBlockPos pos, double distance) {
diff --git a/net/minecraft/world/level/chunk/ChunkAccess.java b/net/minecraft/world/level/chunk/ChunkAccess.java
index 9889485b15501c1adf1a73bb4603d3477860482d..2457247d2bc1c3e3b042a091c3a8290d55203da8 100644
--- a/net/minecraft/world/level/chunk/ChunkAccess.java
+++ b/net/minecraft/world/level/chunk/ChunkAccess.java
@@ -86,6 +86,7 @@ public abstract class ChunkAccess implements BiomeManager.NoiseBiomeSource, Ligh
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);
// CraftBukkit end
+ public final long[] failedSpawnAttempts = new long[net.minecraft.world.entity.MobCategory.values().length]; // Paper - throttle failed spawn attempts
// Paper start - rewrite chunk system
private volatile ca.spottedleaf.moonrise.patches.starlight.light.SWMRNibbleArray[] blockNibbles;
diff --git a/net/minecraft/world/level/chunk/storage/SerializableChunkData.java b/net/minecraft/world/level/chunk/storage/SerializableChunkData.java
index 84840f50d1bcebc7b0bdb1d2f79b53fd6fc98abb..38cdc0f8ce03cfd99658177f609ba3a6590cf000 100644
--- a/net/minecraft/world/level/chunk/storage/SerializableChunkData.java
+++ b/net/minecraft/world/level/chunk/storage/SerializableChunkData.java
@@ -93,6 +93,7 @@ public record SerializableChunkData(
List<CompoundTag> blockEntities,
CompoundTag structureData
, @Nullable net.minecraft.nbt.Tag persistentDataContainer // CraftBukkit - persistentDataContainer
+ , @Nullable long[] failedSpawnAttempts // Paper - throttle failed spawn attempts
) {
private static final Codec<List<SavedTick<Block>>> BLOCK_TICKS_CODEC = SavedTick.codec(BuiltInRegistries.BLOCK.byNameCodec()).listOf();
private static final Codec<List<SavedTick<Fluid>>> FLUID_TICKS_CODEC = SavedTick.codec(BuiltInRegistries.FLUID.byNameCodec()).listOf();
@@ -186,6 +187,19 @@ public record SerializableChunkData(
lists[i] = list2;
}
+ // Paper start - throttle failed spawn attempts
+ long[] failedSpawnAttemptsData = null;
+ if (tag.contains("Paper.FailedSpawnAttempts")) {
+ failedSpawnAttemptsData = new long[net.minecraft.world.entity.MobCategory.values().length];
+ CompoundTag failedSpawnAttemptsTag = tag.getCompoundOrEmpty("Paper.FailedSpawnAttempts");
+ for (net.minecraft.world.entity.MobCategory mobCategory : net.minecraft.world.level.NaturalSpawner.SPAWNING_CATEGORIES) {
+ if (failedSpawnAttemptsTag.contains(mobCategory.getSerializedName())) {
+ failedSpawnAttemptsData[mobCategory.ordinal()] = failedSpawnAttemptsTag.getLongOr(mobCategory.getSerializedName(), 0);
+ }
+ }
+ }
+ // Paper end - throttle failed spawn attempts
+
List<CompoundTag> list3 = tag.getList("entities").stream().flatMap(ListTag::compoundStream).toList();
List<CompoundTag> list4 = tag.getList("block_entities").stream().flatMap(ListTag::compoundStream).toList();
CompoundTag compoundOrEmpty = tag.getCompoundOrEmpty("structures");
@@ -258,6 +272,7 @@ public record SerializableChunkData(
list4,
compoundOrEmpty
, tag.get("ChunkBukkitValues") // CraftBukkit - ChunkBukkitValues
+ , failedSpawnAttemptsData // Paper - throttle failed spawn attempts
);
}
}
@@ -421,6 +436,15 @@ public record SerializableChunkData(
chunkAccess.addPackedPostProcess(this.postProcessingSections[i], i);
}
+ // Paper start - throttle failed spawn attempts
+ long[] failedSpawnAttemptsData = this.failedSpawnAttempts;
+ if (failedSpawnAttemptsData != null) {
+ for (net.minecraft.world.entity.MobCategory mobCategory : net.minecraft.world.entity.MobCategory.values()) {
+ System.arraycopy(failedSpawnAttemptsData, 0, chunkAccess.failedSpawnAttempts, 0, failedSpawnAttemptsData.length);
+ }
+ }
+ // Paper end - throttle failed spawn attempts
+
if (chunkType == ChunkType.LEVELCHUNK) {
return this.loadStarlightLightData(level, new ImposterProtoChunk((LevelChunk)chunkAccess, false)); // Paper - starlight
} else {
@@ -536,6 +560,7 @@ public record SerializableChunkData(
persistentDataContainer = chunk.persistentDataContainer.toTagCompound();
}
// CraftBukkit end
+ final long[] failedSpawnAttemptsData = chunk.failedSpawnAttempts; // Paper - throttle failed spawn attempts
return new SerializableChunkData(
level.palettedContainerFactory(),
pos,
@@ -556,6 +581,7 @@ public record SerializableChunkData(
list1,
compoundTag
, persistentDataContainer // CraftBukkit - persistentDataContainer
+ , failedSpawnAttemptsData // Paper - throttle failed spawn attempts
);
}
}
@@ -641,6 +667,21 @@ public record SerializableChunkData(
compoundTag.put("ChunkBukkitValues", this.persistentDataContainer);
}
// CraftBukkit end
+ // Paper start - throttle failed spawn attempts
+ CompoundTag failedSpawnAttemptsTag = new CompoundTag();
+ long[] failedSpawnAttemptsData = this.failedSpawnAttempts;
+ if (failedSpawnAttemptsData != null) {
+ for (net.minecraft.world.entity.MobCategory mobCategory : net.minecraft.world.entity.MobCategory.values()) {
+ long failedAttempts = failedSpawnAttemptsData[mobCategory.ordinal()];
+ if (failedAttempts > 0) {
+ failedSpawnAttemptsTag.putLong(mobCategory.getSerializedName(), failedAttempts);
+ }
+ }
+ }
+ if (!failedSpawnAttemptsTag.isEmpty()) {
+ compoundTag.put("Paper.FailedSpawnAttempts", failedSpawnAttemptsTag);
+ }
+ // Paper end - throttle failed spawn attempts
// Paper start - starlight
if (this.lightCorrect && !this.chunkStatus.isBefore(net.minecraft.world.level.chunk.status.ChunkStatus.LIGHT)) {
// clobber vanilla value to force vanilla to relight
@@ -856,4 +897,49 @@ public record SerializableChunkData(
}
// Paper end - starlight - convert from record
}
+
+ // Paper start - throttle failed spawn attempts - for plugin compatibility
+ public SerializableChunkData(
+ Registry<Biome> biomeRegistry,
+ ChunkPos chunkPos,
+ int minSectionY,
+ long lastUpdateTime,
+ long inhabitedTime,
+ ChunkStatus chunkStatus,
+ @Nullable BlendingData.Packed blendingData,
+ @Nullable BelowZeroRetrogen belowZeroRetrogen,
+ UpgradeData upgradeData,
+ @Nullable long[] carvingMask,
+ Map<Heightmap.Types, long[]> heightmaps,
+ ChunkAccess.PackedTicks packedTicks,
+ ShortList[] postProcessingSections,
+ boolean lightCorrect,
+ List<net.minecraft.world.level.chunk.storage.SerializableChunkData.SectionData> sectionData,
+ List<CompoundTag> entities,
+ List<CompoundTag> blockEntities,
+ CompoundTag structureData,
+ @Nullable net.minecraft.nbt.Tag persistentDataContainer // CraftBukkit - persistentDataContainer
+ ) {
+ this(biomeRegistry,
+ chunkPos,
+ minSectionY,
+ lastUpdateTime,
+ inhabitedTime,
+ chunkStatus,
+ blendingData,
+ belowZeroRetrogen,
+ upgradeData,
+ carvingMask,
+ heightmaps,
+ packedTicks,
+ postProcessingSections,
+ lightCorrect,
+ sectionData,
+ entities,
+ blockEntities,
+ structureData,
+ persistentDataContainer,
+ null);
+ }
+ // Paper end - throttle failed spawn attempts
}