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Upstream has released updates that appears to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing
CraftBukkit Changes:
bb6f384a
SPIGOT-4534: Only call event for new chunks
99 lines
4.8 KiB
Diff
99 lines
4.8 KiB
Diff
From 9371f9dbc894ceb59d0a7fc7ac0df987c8c8b520 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Fri, 3 Aug 2018 22:47:46 -0400
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Subject: [PATCH] Entity add to world fixes
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1) Chunk Registration might kill an entity, don't add it to the world if it did!
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2) By default, entities are added to the world per slice iteration.
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This opens risk of the slices being manipulated during chunk add if an
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EntityAddToWorldEvent spawns an entity into this chunk.
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Fix this by differing entity add to world for all entities at the same time
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3) If a duplicate entity is attempted to add to the world of an entity, and
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the original entity is dead, overwrite it as the logic does for unloaod queued entities.
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diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
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index 37bb6f40c..ee4332eda 100644
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--- a/src/main/java/net/minecraft/server/Chunk.java
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+++ b/src/main/java/net/minecraft/server/Chunk.java
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@@ -916,6 +916,7 @@ public class Chunk implements IChunkAccess {
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this.world.a(this.tileEntities.values());
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List[] aentityslice = this.entitySlices; // Spigot
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int i = aentityslice.length;
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+ List<Entity> toAdd = new java.util.ArrayList<>(32); // Paper
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for (int j = 0; j < i; ++j) {
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// CraftBukkit start
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@@ -964,18 +965,18 @@ public class Chunk implements IChunkAccess {
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}
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}
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// Paper end
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-
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- List<Entity> toRemove = new LinkedList<>();
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- this.world.a(entityslice.stream().filter((entity) -> {
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- if (this.needsDecoration && !CraftEventFactory.doEntityAddEventCalling(this.world, entity, CreatureSpawnEvent.SpawnReason.CHUNK_GEN)) { // Only call for new chunks
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- toRemove.add(entity);
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- return false;
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- }
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- return !(entity instanceof EntityHuman);
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- }));
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- entityslice.removeAll(toRemove);
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// CraftBukkit end
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}
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+ this.world.addChunkEntities(toAdd.stream() // Paper - add all at same time to avoid entities adding to world modifying slice state, skip already added entities (not normal, but can happen)
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+ // Paper start - Inline event into stream
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+ .filter((entity) -> {
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+ if (!this.needsDecoration) {
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+ return true;
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+ }
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+ return CraftEventFactory.doEntityAddEventCalling(this.world, entity, CreatureSpawnEvent.SpawnReason.CHUNK_GEN);
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+ })
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+ // Paper end - Inline event into stream
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+ .filter((entity) -> !(entity instanceof EntityHuman || entity.valid))); // Paper - add all at same time to avoid entities adding to world modifying slice state, skip already added entities (not normal, but can happen)
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// CraftBukkit start
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org.bukkit.Server server = this.world.getServer();
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diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
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index 5e61826f6..bd6f64e52 100644
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--- a/src/main/java/net/minecraft/server/World.java
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+++ b/src/main/java/net/minecraft/server/World.java
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@@ -1037,6 +1037,7 @@ public abstract class World implements IEntityAccess, GeneratorAccess, IIBlockAc
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}
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this.getChunkAt(i, j).a(entity);
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+ if (entity.dead) return false; // Paper - don't add dead entities, chunk registration may of killed it
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this.entityList.add(entity);
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this.b(entity);
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return true;
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@@ -2442,9 +2443,13 @@ public abstract class World implements IEntityAccess, GeneratorAccess, IIBlockAc
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return j;
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}
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+ public void addChunkEntities(Stream<Entity> collection) { a(collection); } // Paper - OBFHELPER
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public void a(Stream<Entity> stream) {
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org.spigotmc.AsyncCatcher.catchOp( "entity world add"); // Spigot
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stream.forEach((entity) -> {
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+ if (entity == null || entity.dead || entity.valid) { // Paper - prevent adding already added or dead entities
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+ return;
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+ }
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this.entityList.add(entity);
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this.b(entity);
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});
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diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
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index af9cdd9dc..10630ac96 100644
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--- a/src/main/java/net/minecraft/server/WorldServer.java
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+++ b/src/main/java/net/minecraft/server/WorldServer.java
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@@ -991,7 +991,7 @@ public class WorldServer extends World implements IAsyncTaskHandler {
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if (this.entitiesByUUID.containsKey(uuid)) {
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Entity entity1 = (Entity) this.entitiesByUUID.get(uuid);
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- if (this.g.contains(entity1)) {
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+ if (this.g.contains(entity1) || entity1.dead) { // Paper - if dupe is dead, overwrite
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this.g.remove(entity1);
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} else {
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if (!(entity instanceof EntityHuman)) {
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--
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2.20.0
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