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Paper/patches/server/0994-Optional-per-player-mob-spawns.patch
Owen 89d51d5f29
Allow enabling sand duping (#10191) 
Because this exploit has been widely known for years and has not been fixed by Mojang, we decided that it was worth allowing people to toggle it on/off due to how easy it is to make it configurable.

It should be noted that this decision does not promise all future exploits will be configurable.
2024-03-03 17:05:34 -05:00

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Raw Blame History

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: kickash32 <kickash32@gmail.com>
Date: Mon, 19 Aug 2019 01:27:58 +0500
Subject: [PATCH] Optional per player mob spawns
diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
index 07a9a11c7fa608e221c0f0e759c483b44de9fdd5..ccf0f7c7feaf47f451cec30ba02bea39ba192b3c 100644
--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
@@ -288,9 +288,28 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
});
}
+ // Paper start - Optional per player mob spawns
+ public void updatePlayerMobTypeMap(final Entity entity) {
+ if (!this.level.paperConfig().entities.spawning.perPlayerMobSpawns) {
+ return;
+ }
+ int index = entity.getType().getCategory().ordinal();
+
+ final com.destroystokyo.paper.util.maplist.ReferenceList<ServerPlayer> inRange =
+ this.getNearbyPlayers().getPlayers(entity.chunkPosition(), io.papermc.paper.util.player.NearbyPlayers.NearbyMapType.TICK_VIEW_DISTANCE);
+ if (inRange == null) {
+ return;
+ }
+ final Object[] backingSet = inRange.getRawData();
+ for (int i = 0, len = inRange.size(); i < len; i++) {
+ ++((ServerPlayer)backingSet[i]).mobCounts[index];
+ }
+ }
+
public int getMobCountNear(final ServerPlayer player, final net.minecraft.world.entity.MobCategory mobCategory) {
- return -1;
+ return player.mobCounts[mobCategory.ordinal()];
}
+ // Paper end - Optional per player mob spawns
private static double euclideanDistanceSquared(ChunkPos pos, Entity entity) {
double d0 = (double) SectionPos.sectionToBlockCoord(pos.x, 8);
diff --git a/src/main/java/net/minecraft/server/level/ServerChunkCache.java b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
index 20cdfd2bbd5dc71fd37ccedaf3a8d06b45553c9b..059ab637adf1be576fa1fff36a91b6c5f1b5f035 100644
--- a/src/main/java/net/minecraft/server/level/ServerChunkCache.java
+++ b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
@@ -518,7 +518,19 @@ public class ServerChunkCache extends ChunkSource {
gameprofilerfiller.popPush("naturalSpawnCount");
this.level.timings.countNaturalMobs.startTiming(); // Paper - timings
int k = this.distanceManager.getNaturalSpawnChunkCount();
- NaturalSpawner.SpawnState spawnercreature_d = NaturalSpawner.createState(k, this.level.getAllEntities(), this::getFullChunk, new LocalMobCapCalculator(this.chunkMap));
+ // Paper start - Optional per player mob spawns
+ int naturalSpawnChunkCount = k;
+ NaturalSpawner.SpawnState spawnercreature_d; // moved down
+ if ((this.spawnFriendlies || this.spawnEnemies) && this.level.paperConfig().entities.spawning.perPlayerMobSpawns) { // don't count mobs when animals and monsters are disabled
+ // re-set mob counts
+ for (ServerPlayer player : this.level.players) {
+ Arrays.fill(player.mobCounts, 0);
+ }
+ spawnercreature_d = NaturalSpawner.createState(naturalSpawnChunkCount, this.level.getAllEntities(), this::getFullChunk, null, true);
+ } else {
+ spawnercreature_d = NaturalSpawner.createState(naturalSpawnChunkCount, this.level.getAllEntities(), this::getFullChunk, !this.level.paperConfig().entities.spawning.perPlayerMobSpawns ? new LocalMobCapCalculator(this.chunkMap) : null, false);
+ }
+ // Paper end - Optional per player mob spawns
this.level.timings.countNaturalMobs.stopTiming(); // Paper - timings
this.lastSpawnState = spawnercreature_d;
diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
index 910c5087406837033e580ec2a23f5d30d807b723..651aceca9030e1f6060af9fc9f8d349dc0451728 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -256,6 +256,10 @@ public class ServerPlayer extends Player {
public boolean queueHealthUpdatePacket;
public net.minecraft.network.protocol.game.ClientboundSetHealthPacket queuedHealthUpdatePacket;
// Paper end - cancellable death event
+ // Paper start - Optional per player mob spawns
+ public static final int MOBCATEGORY_TOTAL_ENUMS = net.minecraft.world.entity.MobCategory.values().length;
+ public final int[] mobCounts = new int[MOBCATEGORY_TOTAL_ENUMS]; // Paper
+ // Paper end - Optional per player mob spawns
// CraftBukkit start
public String displayName;
diff --git a/src/main/java/net/minecraft/world/level/NaturalSpawner.java b/src/main/java/net/minecraft/world/level/NaturalSpawner.java
index c44c10e15564af6ba0f6d60a1b5f38c6e874a43a..14f4ceb6c0be34d23b24c1695f966145c3aaee96 100644
--- a/src/main/java/net/minecraft/world/level/NaturalSpawner.java
+++ b/src/main/java/net/minecraft/world/level/NaturalSpawner.java
@@ -70,6 +70,12 @@ public final class NaturalSpawner {
private NaturalSpawner() {}
public static NaturalSpawner.SpawnState createState(int spawningChunkCount, Iterable<Entity> entities, NaturalSpawner.ChunkGetter chunkSource, LocalMobCapCalculator densityCapper) {
+ // Paper start - Optional per player mob spawns
+ return createState(spawningChunkCount, entities, chunkSource, densityCapper, false);
+ }
+
+ public static NaturalSpawner.SpawnState createState(int spawningChunkCount, Iterable<Entity> entities, NaturalSpawner.ChunkGetter chunkSource, LocalMobCapCalculator densityCapper, boolean countMobs) {
+ // Paper end - Optional per player mob spawns
PotentialCalculator spawnercreatureprobabilities = new PotentialCalculator();
Object2IntOpenHashMap<MobCategory> object2intopenhashmap = new Object2IntOpenHashMap();
Iterator iterator = entities.iterator();
@@ -104,11 +110,16 @@ public final class NaturalSpawner {
spawnercreatureprobabilities.addCharge(entity.blockPosition(), biomesettingsmobs_b.charge());
}
- if (entity instanceof Mob) {
+ if (densityCapper != null && entity instanceof Mob) { // Paper - Optional per player mob spawns
densityCapper.addMob(chunk.getPos(), enumcreaturetype);
}
object2intopenhashmap.addTo(enumcreaturetype, 1);
+ // Paper start - Optional per player mob spawns
+ if (countMobs) {
+ chunk.level.getChunkSource().chunkMap.updatePlayerMobTypeMap(entity);
+ }
+ // Paper end - Optional per player mob spawns
});
}
}
@@ -143,13 +154,35 @@ public final class NaturalSpawner {
continue;
}
- if ((spawnAnimals || !enumcreaturetype.isFriendly()) && (spawnMonsters || enumcreaturetype.isFriendly()) && (rareSpawn || !enumcreaturetype.isPersistent()) && info.canSpawnForCategory(enumcreaturetype, chunk.getPos(), limit)) {
+ // Paper start - Optional per player mob spawns; only allow spawns upto the limit per chunk and update count afterwards
+ int currEntityCount = info.mobCategoryCounts.getInt(enumcreaturetype);
+ int k1 = limit * info.getSpawnableChunkCount() / NaturalSpawner.MAGIC_NUMBER;
+ int difference = k1 - currEntityCount;
+
+ if (world.paperConfig().entities.spawning.perPlayerMobSpawns) {
+ int minDiff = Integer.MAX_VALUE;
+ final com.destroystokyo.paper.util.maplist.ReferenceList<net.minecraft.server.level.ServerPlayer> inRange =
+ world.chunkSource.chunkMap.getNearbyPlayers().getPlayers(chunk.getPos(), io.papermc.paper.util.player.NearbyPlayers.NearbyMapType.TICK_VIEW_DISTANCE);
+ if (inRange != null) {
+ final Object[] backingSet = inRange.getRawData();
+ for (int k = 0, len = inRange.size(); k < len; k++) {
+ minDiff = Math.min(limit - world.getChunkSource().chunkMap.getMobCountNear((net.minecraft.server.level.ServerPlayer)backingSet[k], enumcreaturetype), minDiff);
+ }
+ }
+ difference = (minDiff == Integer.MAX_VALUE) ? 0 : minDiff;
+ }
+ if ((spawnAnimals || !enumcreaturetype.isFriendly()) && (spawnMonsters || enumcreaturetype.isFriendly()) && (rareSpawn || !enumcreaturetype.isPersistent()) && difference > 0) {
+ // Paper end - Optional per player mob spawns
// CraftBukkit end
Objects.requireNonNull(info);
NaturalSpawner.SpawnPredicate spawnercreature_c = info::canSpawn;
Objects.requireNonNull(info);
- NaturalSpawner.spawnCategoryForChunk(enumcreaturetype, world, chunk, spawnercreature_c, info::afterSpawn);
+ // Paper start - Optional per player mob spawns
+ int spawnCount = NaturalSpawner.spawnCategoryForChunk(enumcreaturetype, world, chunk, spawnercreature_c, info::afterSpawn,
+ difference, world.paperConfig().entities.spawning.perPlayerMobSpawns ? world.getChunkSource().chunkMap::updatePlayerMobTypeMap : null);
+ info.mobCategoryCounts.mergeInt(enumcreaturetype, spawnCount, Integer::sum);
+ // Paper end - Optional per player mob spawns
}
}
@@ -168,11 +201,17 @@ public final class NaturalSpawner {
// Paper end - Add mobcaps commands
public static void spawnCategoryForChunk(MobCategory group, ServerLevel world, LevelChunk chunk, NaturalSpawner.SpawnPredicate checker, NaturalSpawner.AfterSpawnCallback runner) {
+ // Paper start - Optional per player mob spawns
+ spawnCategoryForChunk(group, world, chunk, checker, runner, Integer.MAX_VALUE, null);
+ }
+ public static int spawnCategoryForChunk(MobCategory group, ServerLevel world, LevelChunk chunk, NaturalSpawner.SpawnPredicate checker, NaturalSpawner.AfterSpawnCallback runner, int maxSpawns, Consumer<Entity> trackEntity) {
+ // Paper end - Optional per player mob spawns
BlockPos blockposition = NaturalSpawner.getRandomPosWithin(world, chunk);
if (blockposition.getY() >= world.getMinBuildHeight() + 1) {
- NaturalSpawner.spawnCategoryForPosition(group, world, chunk, blockposition, checker, runner);
+ return NaturalSpawner.spawnCategoryForPosition(group, world, chunk, blockposition, checker, runner, maxSpawns, trackEntity); // Paper - Optional per player mob spawns
}
+ return 0; // Paper - Optional per player mob spawns
}
@VisibleForDebug
@@ -183,15 +222,21 @@ public final class NaturalSpawner {
});
}
+ // Paper start - Optional per player mob spawns
public static void spawnCategoryForPosition(MobCategory group, ServerLevel world, ChunkAccess chunk, BlockPos pos, NaturalSpawner.SpawnPredicate checker, NaturalSpawner.AfterSpawnCallback runner) {
+ spawnCategoryForPosition(group, world,chunk, pos, checker, runner, Integer.MAX_VALUE, null);
+ }
+ public static int spawnCategoryForPosition(MobCategory group, ServerLevel world, ChunkAccess chunk, BlockPos pos, NaturalSpawner.SpawnPredicate checker, NaturalSpawner.AfterSpawnCallback runner, int maxSpawns, Consumer<Entity> trackEntity) {
+ // Paper end - Optional per player mob spawns
StructureManager structuremanager = world.structureManager();
ChunkGenerator chunkgenerator = world.getChunkSource().getGenerator();
int i = pos.getY();
BlockState iblockdata = world.getBlockStateIfLoadedAndInBounds(pos); // Paper - don't load chunks for mob spawn
+ int j = 0; // Paper - Optional per player mob spawns; moved up
if (iblockdata != null && !iblockdata.isRedstoneConductor(chunk, pos)) { // Paper - don't load chunks for mob spawn
BlockPos.MutableBlockPos blockposition_mutableblockposition = new BlockPos.MutableBlockPos();
- int j = 0;
+ //int j = 0; // Paper - Optional per player mob spawns; moved up
int k = 0;
while (k < 3) {
@@ -233,14 +278,14 @@ public final class NaturalSpawner {
// Paper start - PreCreatureSpawnEvent
PreSpawnStatus doSpawning = isValidSpawnPostitionForType(world, group, structuremanager, chunkgenerator, biomesettingsmobs_c, blockposition_mutableblockposition, d2);
if (doSpawning == PreSpawnStatus.ABORT) {
- return;
+ return j; // Paper - Optional per player mob spawns
}
if (doSpawning == PreSpawnStatus.SUCCESS && checker.test(biomesettingsmobs_c.type, blockposition_mutableblockposition, chunk)) {
// Paper end - PreCreatureSpawnEvent
Mob entityinsentient = NaturalSpawner.getMobForSpawn(world, biomesettingsmobs_c.type);
if (entityinsentient == null) {
- return;
+ return j; // Paper - Optional per player mob spawns
}
entityinsentient.moveTo(d0, (double) i, d1, world.random.nextFloat() * 360.0F, 0.0F);
@@ -253,10 +298,15 @@ public final class NaturalSpawner {
++j;
++k1;
runner.run(entityinsentient, chunk);
+ // Paper start - Optional per player mob spawns
+ if (trackEntity != null) {
+ trackEntity.accept(entityinsentient);
+ }
+ // Paper end - Optional per player mob spawns
}
// CraftBukkit end
- if (j >= entityinsentient.getMaxSpawnClusterSize()) {
- return;
+ if (j >= entityinsentient.getMaxSpawnClusterSize() || j >= maxSpawns) { // Paper - Optional per player mob spawns
+ return j; // Paper - Optional per player mob spawns
}
if (entityinsentient.isMaxGroupSizeReached(k1)) {
@@ -278,6 +328,7 @@ public final class NaturalSpawner {
}
}
+ return j; // Paper - Optional per player mob spawns
}
private static boolean isRightDistanceToPlayerAndSpawnPoint(ServerLevel world, ChunkAccess chunk, BlockPos.MutableBlockPos pos, double squaredDistance) {
@@ -573,7 +624,7 @@ public final class NaturalSpawner {
MobCategory enumcreaturetype = entitytypes.getCategory();
this.mobCategoryCounts.addTo(enumcreaturetype, 1);
- this.localMobCapCalculator.addMob(new ChunkPos(blockposition), enumcreaturetype);
+ if (this.localMobCapCalculator != null) this.localMobCapCalculator.addMob(new ChunkPos(blockposition), enumcreaturetype); // Paper - Optional per player mob spawns
}
public int getSpawnableChunkCount() {
@@ -589,6 +640,7 @@ public final class NaturalSpawner {
int i = limit * this.spawnableChunkCount / NaturalSpawner.MAGIC_NUMBER;
// CraftBukkit end
+ if (this.localMobCapCalculator == null) return this.mobCategoryCounts.getInt(enumcreaturetype) < i; // Paper - Optional per player mob spawns
return this.mobCategoryCounts.getInt(enumcreaturetype) >= i ? false : this.localMobCapCalculator.canSpawn(enumcreaturetype, chunkcoordintpair);
}
}
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