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Ignore Dead Entities in entityList iteration

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A spigot change delays removal of entities from the entity list.
This causes a change in behavior from Vanilla where getEntities type
methods will return dead entities that they shouldn't otherwise be doing.

This will ensure that dead entities are skipped from iteration since
they shouldn't of been in the list in the first place.
This commit is contained in:
Aikar 2018-07-28 12:26:36 -04:00
parent 9e250168e8
commit d98f6afef0
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GPG key ID: 401ADFC9891FAAFE
1 changed files with 103 additions and 0 deletions
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Spigot-Server-Patches/0343-Ignore-Dead-Entities-in-entityList-iteration.patch Normal file
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@ -0,0 +1,103 @@
From 3e0a26eb873fcf1fa259f775320ae0a6a6346ec0 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sat, 28 Jul 2018 12:18:27 -0400
Subject: [PATCH] Ignore Dead Entities in entityList iteration
A spigot change delays removal of entities from the entity list.
This causes a change in behavior from Vanilla where getEntities type
methods will return dead entities that they shouldn't otherwise be doing.
This will ensure that dead entities are skipped from iteration since
they shouldn't of been in the list in the first place.
diff --git a/src/main/java/com/destroystokyo/paper/PaperCommand.java b/src/main/java/com/destroystokyo/paper/PaperCommand.java
index ecd1c65a9..1898ab897 100644
--- a/src/main/java/com/destroystokyo/paper/PaperCommand.java
+++ b/src/main/java/com/destroystokyo/paper/PaperCommand.java
@@ -128,6 +128,7 @@ public class PaperCommand extends Command {
List<Entity> entities = world.entityList;
entities.forEach(e -> {
MinecraftKey key = EntityTypes.getKey(e);
+ if (e.shouldBeRemoved) return; // Paper
MutablePair<Integer, Map<ChunkCoordIntPair, Integer>> info = list.computeIfAbsent(key, k -> MutablePair.of(0, Maps.newHashMap()));
ChunkCoordIntPair chunk = new ChunkCoordIntPair(e.getChunkX(), e.getChunkZ());
diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
index 89f9bd347..d163acd8f 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -124,6 +124,7 @@ public abstract class Entity implements ICommandListener, KeyedObject { // Paper
protected boolean E;
private boolean aw;
public boolean dead;
+ public boolean shouldBeRemoved; // Paper
public float width;
public float length;
public float I;
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index df98a4f44..8f82fbf67 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -1279,6 +1279,7 @@ public abstract class World implements IBlockAccess {
if (entity.aa && this.isChunkLoaded(i, j, true)) {
this.getChunkAt(i, j).b(entity);
}
+ entity.shouldBeRemoved = true; // Paper
if (!guardEntityList) { // Spigot - It will get removed after the tick if we are ticking // Paper - always remove from current chunk above
// CraftBukkit start - Decrement loop variable field if we've already ticked this entity
@@ -2633,6 +2634,7 @@ public abstract class World implements IBlockAccess {
while (iterator.hasNext()) {
Entity entity = (Entity) iterator.next();
+ if (entity.shouldBeRemoved) continue; // Paper
if (oclass.isAssignableFrom(entity.getClass()) && predicate.apply((T) entity)) {
arraylist.add(entity);
@@ -2719,6 +2721,7 @@ public abstract class World implements IBlockAccess {
while (iterator.hasNext()) {
Entity entity = (Entity) iterator.next();
+ if (entity.shouldBeRemoved) continue; // Paper
// CraftBukkit start - Split out persistent check, don't apply it to special persistent mobs
if (entity instanceof EntityInsentient) {
EntityInsentient entityinsentient = (EntityInsentient) entity;
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
index 210e3bc4e..e6ecd1796 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
@@ -678,6 +678,7 @@ public class CraftWorld implements World {
for (Object o : world.entityList) {
if (o instanceof net.minecraft.server.Entity) {
net.minecraft.server.Entity mcEnt = (net.minecraft.server.Entity) o;
+ if (mcEnt.shouldBeRemoved) continue; // Paper
Entity bukkitEntity = mcEnt.getBukkitEntity();
// Assuming that bukkitEntity isn't null
@@ -696,6 +697,7 @@ public class CraftWorld implements World {
for (Object o : world.entityList) {
if (o instanceof net.minecraft.server.Entity) {
net.minecraft.server.Entity mcEnt = (net.minecraft.server.Entity) o;
+ if (mcEnt.shouldBeRemoved) continue; // Paper
Entity bukkitEntity = mcEnt.getBukkitEntity();
// Assuming that bukkitEntity isn't null
@@ -720,6 +722,7 @@ public class CraftWorld implements World {
for (Object entity: world.entityList) {
if (entity instanceof net.minecraft.server.Entity) {
+ if (((net.minecraft.server.Entity) entity).shouldBeRemoved) continue; // Paper
Entity bukkitEntity = ((net.minecraft.server.Entity) entity).getBukkitEntity();
if (bukkitEntity == null) {
@@ -742,6 +745,7 @@ public class CraftWorld implements World {
for (Object entity: world.entityList) {
if (entity instanceof net.minecraft.server.Entity) {
+ if (((net.minecraft.server.Entity) entity).shouldBeRemoved) continue; // Paper
Entity bukkitEntity = ((net.minecraft.server.Entity) entity).getBukkitEntity();
if (bukkitEntity == null) {
--
2.18.0