papermc/Spigot-Server-Patches/0105-Fix-Double-World-Add-issues.patch
Aikar b6925c36af
Remove no longer needed undead horse leash patch
This is now default vanilla behavior

Fixes #3644
2020-06-28 04:35:41 -04:00

21 lines
1.3 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Tue, 21 Jun 2016 22:54:34 -0400
Subject: [PATCH] Fix Double World Add issues
Vanilla will double add Spider Jockeys to the world, so ignore already added.
Also add debug if something else tries to, and abort before world gets bad state
diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
index 792d2cb535954e02aec779b5076024f9fc0baf38..0ae5eb7da3c8baf6ff54cc3b83bba41127457134 100644
--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
@@ -919,6 +919,7 @@ public class WorldServer extends World implements GeneratorAccessSeed {
// CraftBukkit start
private boolean addEntity0(Entity entity, CreatureSpawnEvent.SpawnReason spawnReason) {
org.spigotmc.AsyncCatcher.catchOp("entity add"); // Spigot
+ if (entity.valid) { MinecraftServer.LOGGER.error("Attempted Double World add on " + entity, new Throwable()); return true; } // Paper
if (entity.dead) {
// WorldServer.LOGGER.warn("Tried to add entity {} but it was marked as removed already", EntityTypes.getName(entity.getEntityType())); // CraftBukkit
return false;