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52 lines
2.4 KiB
Diff
52 lines
2.4 KiB
Diff
From fc66da2297c31678b873891cfc210bafde45c4e2 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Sun, 10 Jun 2018 20:04:42 -0400
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Subject: [PATCH] Properly remove entities on dimension teleport
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To teleport an entity between dimensions, the server makes a copy
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and puts the copy in the new location, and marks the old one dead.
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If this method got called for the same world in the same tick,
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the entity would not have been removed from the UUID map, and the
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world readd would fail.
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This can be triggered even with a plugin if the entity is teleported
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twice in the same tick, from world A to B, then back from B to A.
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The re-add to A will fail to add the entity to the world. It will
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actually be there, but it will not be visible on the client until
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the server is restarted to re-try the add to world process again.
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This bug was unlikely to be seen by many due to the double teleport
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requirement, but plugins (such as my own) use this method to
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trigger a "reload" of the entity on the client.
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diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
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index e64d032b7f..f54e9784c4 100644
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--- a/src/main/java/net/minecraft/server/Entity.java
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+++ b/src/main/java/net/minecraft/server/Entity.java
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@@ -2608,7 +2608,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
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}
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// CraftBukkit end */
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- this.world.kill(this);
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+ this.world.removeEntity(this); // Paper - Fully remove entity, can't have dupes in the UUID map
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this.dead = false;
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this.world.methodProfiler.enter("reposition");
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/* CraftBukkit start - Handled in calculateTarget
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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 e4730352d3..c08ee62e84 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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@@ -997,6 +997,7 @@ public class WorldServer extends World implements IAsyncTaskHandler {
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}
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protected void c(Entity entity) {
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+ if (!this.entitiesByUUID.containsKey(entity.getUniqueID()) && !entity.valid) return; // Paper - Already removed, dont fire twice - this looks like it can happen even without our changes
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super.c(entity);
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this.entitiesById.d(entity.getId());
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this.entitiesByUUID.remove(entity.getUniqueID());
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--
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2.20.1
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