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Paper/Spigot-Server-Patches/0307-Properly-remove-entities-on-dimension-teleport.patch
Aikar 6745297b05
Only use stored chunk ref if it matches current chunk registration
Closes #1197

While this really undoes a lot of the desired performance gains avoiding chunk lookups,
we sadly have to accept this because we are seeing lots of bugs with entities.
2018-07-08 22:39:46 -04:00

52 Zeilen
2.3 KiB
Diff

From 24da81e684f7d7c01c3b5e6053899d60668157c1 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sun, 10 Jun 2018 20:04:42 -0400
Subject: [PATCH] Properly remove entities on dimension teleport
To teleport an entity between dimensions, the server makes a copy
and puts the copy in the new location, and marks the old one dead.
If this method got called for the same world in the same tick,
the entity would not have been removed from the UUID map, and the
world readd would fail.
This can be triggered even with a plugin if the entity is teleported
twice in the same tick, from world A to B, then back from B to A.
The re-add to A will fail to add the entity to the world. It will
actually be there, but it will not be visible on the client until
the server is restarted to re-try the add to world process again.
This bug was unlikely to be seen by many due to the double teleport
requirement, but plugins (such as my own) use this method to
trigger a "reload" of the entity on the client.
diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
index 9f2db9025..a96cdcbc6 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -2430,7 +2430,7 @@ public abstract class Entity implements ICommandListener, KeyedObject { // Paper
}
// CraftBukkit end */
- this.world.kill(this);
+ this.world.removeEntity(this); // Paper - Fully remove entity, can't have dupes in the UUID map
this.dead = false;
this.world.methodProfiler.a("reposition");
/* CraftBukkit start - Handled in calculateTarget
diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
index 49019d54d..9fe5c4406 100644
--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
@@ -1205,6 +1205,7 @@ public class WorldServer extends World implements IAsyncTaskHandler {
}
protected void c(Entity entity) {
+ if (!entity.valid) return; // Paper - Already removed, dont fire twice - this looks like it can happen even without our changes
super.c(entity);
this.entitiesById.d(entity.getId());
this.entitiesByUUID.remove(entity.getUniqueID());
--
2.18.0