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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Thu, 23 Nov 2023 10:33:25 -0800
Subject: [PATCH] Don't fire sync events during worldgen
Fixes EntityPotionEffectEvent
Fixes EntityPoseChangeEvent
Asynchronous chunk generation provides an opportunity for things
to happen async that previously fired synchronous-only events. This
patch is for mitigating those issues by various methods.
Also fixes correctly marking/clearing the entity generation flag.
This patch sets the generation flag anytime an entity is created
via StructureTemplate before loading from NBT to catch uses of
the flag during the loading logic. This patch clears the generation
flag from an entity when added to a ServerLevel for the situation
where generation happened directly to a ServerLevel and the
entity still has the flag set.
diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index 7acb24c2a34fdcbcb1c0e3cc03b01996689667d3..7a713fd31a2155b1c77c54817a67e354b1d4640d 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -1219,6 +1219,7 @@ public class ServerLevel extends Level implements ServerEntityGetter, WorldGenLe
// CraftBukkit start
private boolean addEntity(Entity entity, CreatureSpawnEvent.SpawnReason spawnReason) {
org.spigotmc.AsyncCatcher.catchOp("entity add"); // Spigot
+ entity.generation = false; // Paper - Don't fire sync event during generation; Reset flag if it was added during a ServerLevel generation process
// Paper start - extra debug info
if (entity.valid) {
MinecraftServer.LOGGER.error("Attempted Double World add on {}", entity, new Throwable());
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index e9142414c7d247ae2a27c0bc9ea2be3bb8e3db16..1d66c35b1092b8101f0a803d8c087e5a958875b1 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -631,7 +631,11 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
if (pose == this.getPose()) {
return;
}
- this.level.getCraftServer().getPluginManager().callEvent(new EntityPoseChangeEvent(this.getBukkitEntity(), Pose.values()[pose.ordinal()]));
+ // Paper start - Don't fire sync event during generation
+ if (!this.generation) {
+ this.level.getCraftServer().getPluginManager().callEvent(new EntityPoseChangeEvent(this.getBukkitEntity(), Pose.values()[pose.ordinal()]));
+ }
+ // Paper end - Don't fire sync event during generation
// CraftBukkit end
this.entityData.set(Entity.DATA_POSE, pose);
}
diff --git a/src/main/java/net/minecraft/world/entity/EntityType.java b/src/main/java/net/minecraft/world/entity/EntityType.java
index 9be3f9b218b28fe8dde6321d8377232fbc634ee3..d036b02af0a4f63bd1e4e306f1ecd102b3d991fb 100644
--- a/src/main/java/net/minecraft/world/entity/EntityType.java
+++ b/src/main/java/net/minecraft/world/entity/EntityType.java
@@ -659,9 +659,15 @@ public class EntityType<T extends Entity> implements FeatureElement, EntityTypeT
}
public static Optional<Entity> create(CompoundTag nbt, Level world, EntitySpawnReason reason) {
+ // Paper start - Don't fire sync event during generation
+ return create(nbt, world, reason, false);
+ }
+ public static Optional<Entity> create(CompoundTag nbt, Level world, EntitySpawnReason reason, boolean generation) {
+ // Paper end - Don't fire sync event during generation
return Util.ifElse(EntityType.by(nbt).map((entitytypes) -> {
return entitytypes.create(world, reason);
}), (entity) -> {
+ if (generation) entity.generation = true; // Paper - Don't fire sync event during generation
entity.load(nbt);
}, () -> {
EntityType.LOGGER.warn("Skipping Entity with id {}", nbt.getString("id"));
diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index 30424789ba1c8d25f830145501b4a7399b91f2d1..9bc6ed9fd8e5154d39fe12ffed1ecd5ec8e70df8 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -1161,6 +1161,11 @@ public abstract class LivingEntity extends Entity implements Attackable {
}
public boolean addEffect(MobEffectInstance mobeffect, @Nullable Entity entity, EntityPotionEffectEvent.Cause cause) {
+ // Paper start - Don't fire sync event during generation
+ return this.addEffect(mobeffect, entity, cause, true);
+ }
+ public boolean addEffect(MobEffectInstance mobeffect, @Nullable Entity entity, EntityPotionEffectEvent.Cause cause, boolean fireEvent) {
+ // Paper end - Don't fire sync event during generation
// org.spigotmc.AsyncCatcher.catchOp("effect add"); // Spigot // Paper - move to API
if (this.isTickingEffects) {
this.effectsToProcess.add(new ProcessableEffect(mobeffect, cause));
@@ -1180,10 +1185,13 @@ public abstract class LivingEntity extends Entity implements Attackable {
override = new MobEffectInstance(mobeffect1).update(mobeffect);
}
+ if (fireEvent) { // Paper - Don't fire sync event during generation
EntityPotionEffectEvent event = CraftEventFactory.callEntityPotionEffectChangeEvent(this, mobeffect1, mobeffect, cause, override);
+ override = event.isOverride(); // Paper - Don't fire sync event during generation
if (event.isCancelled()) {
return false;
}
+ } // Paper - Don't fire sync event during generation
// CraftBukkit end
if (mobeffect1 == null) {
@@ -1192,7 +1200,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
flag = true;
mobeffect.onEffectAdded(this);
// CraftBukkit start
- } else if (event.isOverride()) {
+ } else if (override) { // Paper - Don't fire sync event during generation
mobeffect1.update(mobeffect);
this.onEffectUpdated(mobeffect1, true, entity);
// CraftBukkit end
diff --git a/src/main/java/net/minecraft/world/entity/monster/Spider.java b/src/main/java/net/minecraft/world/entity/monster/Spider.java
index 6c2d4c2163cf299c0943af21d4dc367b5677c089..72e42605c278028480c368762da18f61806d766a 100644
--- a/src/main/java/net/minecraft/world/entity/monster/Spider.java
+++ b/src/main/java/net/minecraft/world/entity/monster/Spider.java
@@ -172,7 +172,7 @@ public class Spider extends Monster {
Holder<MobEffect> holder = entityspider_groupdataspider.effect;
if (holder != null) {
- this.addEffect(new MobEffectInstance(holder, -1), org.bukkit.event.entity.EntityPotionEffectEvent.Cause.SPIDER_SPAWN); // CraftBukkit
+ this.addEffect(new MobEffectInstance(holder, -1), null, org.bukkit.event.entity.EntityPotionEffectEvent.Cause.SPIDER_SPAWN, world instanceof net.minecraft.server.level.ServerLevel); // CraftBukkit
}
}
diff --git a/src/main/java/net/minecraft/world/level/levelgen/structure/templatesystem/StructureTemplate.java b/src/main/java/net/minecraft/world/level/levelgen/structure/templatesystem/StructureTemplate.java
index 734f511d197bc6bf2b02588069eb02c0224781f5..d35b731751e851bee531aa5e7996557658ba6fae 100644
--- a/src/main/java/net/minecraft/world/level/levelgen/structure/templatesystem/StructureTemplate.java
+++ b/src/main/java/net/minecraft/world/level/levelgen/structure/templatesystem/StructureTemplate.java
@@ -549,7 +549,7 @@ public class StructureTemplate {
private static Optional<Entity> createEntityIgnoreException(ServerLevelAccessor world, CompoundTag nbt) {
// CraftBukkit start
// try {
- return EntityType.create(nbt, world.getLevel(), EntitySpawnReason.STRUCTURE);
+ return EntityType.create(nbt, world.getLevel(), EntitySpawnReason.STRUCTURE, true); // Paper - Don't fire sync event during generation
// } catch (Exception exception) {
// return Optional.empty();
// }
diff --git a/src/main/java/org/bukkit/craftbukkit/util/DelegatedGeneratorAccess.java b/src/main/java/org/bukkit/craftbukkit/util/DelegatedGeneratorAccess.java
index e444662ee4d9405eeea7caa41b9cd6b36586d840..54c4434662d057a08800918641b95708cda61207 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/DelegatedGeneratorAccess.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/DelegatedGeneratorAccess.java
@@ -90,15 +90,17 @@ public abstract class DelegatedGeneratorAccess implements WorldGenLevel {
return this.handle.getLevel();
}
- @Override
- public void addFreshEntityWithPassengers(Entity entity) {
- this.handle.addFreshEntityWithPassengers(entity);
- }
-
- @Override
- public void addFreshEntityWithPassengers(Entity entity, CreatureSpawnEvent.SpawnReason reason) {
- this.handle.addFreshEntityWithPassengers(entity, reason);
- }
+ // Paper start - Don't fire sync event during generation; don't override these methods so all entities are run through addFreshEntity
+ // @Override
+ // public void addFreshEntityWithPassengers(Entity entity) {
+ // this.handle.addFreshEntityWithPassengers(entity);
+ // }
+ //
+ // @Override
+ // public void addFreshEntityWithPassengers(Entity entity, CreatureSpawnEvent.SpawnReason reason) {
+ // this.handle.addFreshEntityWithPassengers(entity, reason);
+ // }
+ // Paper end - Don't fire sync event during generation; don't override these methods so all entities are run through addFreshEntity
@Override
public ServerLevel getMinecraftWorld() {
diff --git a/src/main/java/org/bukkit/craftbukkit/util/TransformerGeneratorAccess.java b/src/main/java/org/bukkit/craftbukkit/util/TransformerGeneratorAccess.java
index 35ecf6f824aca56a20280dd683123df1d0c7d66e..1d1fdcf10498c421f106158254e052da6d68d8a5 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/TransformerGeneratorAccess.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/TransformerGeneratorAccess.java
@@ -39,21 +39,23 @@ public class TransformerGeneratorAccess extends DelegatedGeneratorAccess {
return super.addFreshEntity(arg0, arg1);
}
- @Override
- public void addFreshEntityWithPassengers(Entity entity) {
- if (this.structureTransformer != null && !this.structureTransformer.transformEntity(entity)) {
- return;
- }
- super.addFreshEntityWithPassengers(entity);
- }
-
- @Override
- public void addFreshEntityWithPassengers(Entity arg0, SpawnReason arg1) {
- if (this.structureTransformer != null && !this.structureTransformer.transformEntity(arg0)) {
- return;
- }
- super.addFreshEntityWithPassengers(arg0, arg1);
- }
+ // Paper start - Don't fire sync event during generation; don't override these methods so all entities are run through addFreshEntity
+ // @Override
+ // public void addFreshEntityWithPassengers(Entity entity) {
+ // if (this.structureTransformer != null && !this.structureTransformer.transformEntity(entity)) {
+ // return;
+ // }
+ // super.addFreshEntityWithPassengers(entity);
+ // }
+ //
+ // @Override
+ // public void addFreshEntityWithPassengers(Entity arg0, SpawnReason arg1) {
+ // if (this.structureTransformer != null && !this.structureTransformer.transformEntity(arg0)) {
+ // return;
+ // }
+ // super.addFreshEntityWithPassengers(arg0, arg1);
+ // }
+ // Paper end - Don't fire sync event during generation; don't override these methods
public boolean setCraftBlock(BlockPos position, CraftBlockState craftBlockState, int i, int j) {
if (this.structureTransformer != null) {
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