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From 0000000000000000000000000000000000000000 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 6943524c2dd8b12691b8ac5b08daee823ce50c3d..b67bd98cca4a06bc0ebaed577195dffc3b3251ec 100644
--- a/src/main/java/com/destroystokyo/paper/PaperCommand.java
+++ b/src/main/java/com/destroystokyo/paper/PaperCommand.java
@@ -209,6 +209,7 @@ public class PaperCommand extends Command {
Collection<Entity> entities = world.entitiesById.values();
entities.forEach(e -> {
MinecraftKey key = e.getMinecraftKey();
+ 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.chunkX, e.chunkZ);
diff --git a/src/main/java/net/minecraft/server/level/WorldServer.java b/src/main/java/net/minecraft/server/level/WorldServer.java
index ce7431ea8597c645bb2c97f596796dbf12206e72..4eda8d2065d72c67b1e1cf9e9560e13e7f24d470 100644
--- a/src/main/java/net/minecraft/server/level/WorldServer.java
+++ b/src/main/java/net/minecraft/server/level/WorldServer.java
@@ -1309,6 +1309,7 @@ public class WorldServer extends World implements GeneratorAccessSeed {
entity.origin = entity.getBukkitEntity().getLocation();
}
// Paper end
+ entity.shouldBeRemoved = false; // Paper - shouldn't be removed after being re-added
new com.destroystokyo.paper.event.entity.EntityAddToWorldEvent(entity.getBukkitEntity()).callEvent(); // Paper - fire while valid
}
@@ -1321,6 +1322,7 @@ public class WorldServer extends World implements GeneratorAccessSeed {
this.removeEntityFromChunk(entity);
this.entitiesById.remove(entity.getId());
this.unregisterEntity(entity);
+ entity.shouldBeRemoved = true; // Paper
}
}
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 102c2bb98a99cdbfcdf1297341dbba91434ee0e3..046b191e771ed9be337e095214a67febd768e5f6 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -276,6 +276,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, ne
protected int numCollisions = 0; // Paper
public void inactiveTick() { }
// Spigot end
+ public boolean shouldBeRemoved; // Paper
public float getBukkitYaw() {
return this.yaw;
diff --git a/src/main/java/net/minecraft/world/level/chunk/Chunk.java b/src/main/java/net/minecraft/world/level/chunk/Chunk.java
index e4accac8f2e8daa58f9b0c279ffcad9347448bb0..79ff96f18c53f3d1ce4a00be2e2d8fe68f77bf54 100644
--- a/src/main/java/net/minecraft/world/level/chunk/Chunk.java
+++ b/src/main/java/net/minecraft/world/level/chunk/Chunk.java
@@ -863,6 +863,7 @@ public class Chunk implements IChunkAccess {
for (int i1 = 0; i1 < l; ++i1) {
Entity entity1 = (Entity) list1.get(i1);
+ if (entity1.shouldBeRemoved) continue; // Paper
if (entity1.getBoundingBox().c(axisalignedbb) && entity1 != entity) {
if (predicate == null || predicate.test(entity1)) {
@@ -900,6 +901,7 @@ public class Chunk implements IChunkAccess {
while (iterator.hasNext()) {
T entity = (T) iterator.next(); // CraftBukkit - decompile error
+ if (entity.shouldBeRemoved) continue; // Paper
if ((entitytypes == null || entity.getEntityType() == entitytypes) && entity.getBoundingBox().c(axisalignedbb) && predicate.test(entity)) {
list.add(entity);
@@ -922,6 +924,7 @@ public class Chunk implements IChunkAccess {
while (iterator.hasNext()) {
T t0 = (T) iterator.next(); // CraftBukkit - decompile error
+ if (t0.shouldBeRemoved) continue; // Paper
if (oclass.isInstance(t0) && t0.getBoundingBox().c(axisalignedbb) && (predicate == null || predicate.test(t0))) { // Spigot - instance check
list.add(t0);
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
index 945ea6022d89bfb6ee4429233909f8294141fbb6..716974f9f455a8b35a2bee0ef17e795676f44105 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
@@ -1040,6 +1040,7 @@ public class CraftWorld implements World {
for (Object o : world.entitiesById.values()) {
if (o instanceof net.minecraft.world.entity.Entity) {
net.minecraft.world.entity.Entity mcEnt = (net.minecraft.world.entity.Entity) o;
+ if (mcEnt.shouldBeRemoved) continue; // Paper
Entity bukkitEntity = mcEnt.getBukkitEntity();
// Assuming that bukkitEntity isn't null
@@ -1059,6 +1060,7 @@ public class CraftWorld implements World {
for (Object o : world.entitiesById.values()) {
if (o instanceof net.minecraft.world.entity.Entity) {
net.minecraft.world.entity.Entity mcEnt = (net.minecraft.world.entity.Entity) o;
+ if (mcEnt.shouldBeRemoved) continue; // Paper
Entity bukkitEntity = mcEnt.getBukkitEntity();
// Assuming that bukkitEntity isn't null
@@ -1085,6 +1087,7 @@ public class CraftWorld implements World {
for (Object entity: world.entitiesById.values()) {
if (entity instanceof net.minecraft.world.entity.Entity) {
+ if (((net.minecraft.world.entity.Entity) entity).shouldBeRemoved) continue; // Paper
Entity bukkitEntity = ((net.minecraft.world.entity.Entity) entity).getBukkitEntity();
if (bukkitEntity == null) {
@@ -1108,6 +1111,7 @@ public class CraftWorld implements World {
for (Object entity: world.entitiesById.values()) {
if (entity instanceof net.minecraft.world.entity.Entity) {
+ if (((net.minecraft.world.entity.Entity) entity).shouldBeRemoved) continue; // Paper
Entity bukkitEntity = ((net.minecraft.world.entity.Entity) entity).getBukkitEntity();
if (bukkitEntity == null) {
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