38 lines
1.9 KiB
Diff
38 lines
1.9 KiB
Diff
From 5998e59699d7927e6937cc3df8d056504fa7f2c0 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Tue, 21 Jun 2016 22:54:34 -0400
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Subject: [PATCH] Fix Double World Add issues
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Vanilla will double add Spider Jockeys to the world, so ignore already added.
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Also add debug if something else tries to, and abort before world gets bad state
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diff --git a/src/main/java/net/minecraft/server/ChunkRegionLoader.java b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
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index 21ee154a5..a144118f6 100644
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--- a/src/main/java/net/minecraft/server/ChunkRegionLoader.java
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+++ b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
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@@ -1041,7 +1041,7 @@ public class ChunkRegionLoader implements IChunkLoader, IAsyncChunkSaver {
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}
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public static void a(Entity entity, GeneratorAccess generatoraccess, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason reason) {
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- if (generatoraccess.addEntity(entity, reason) && entity.isVehicle()) {
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+ if (!entity.valid && generatoraccess.addEntity(entity, reason) && entity.isVehicle()) { // Paper
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// CraftBukkit end
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Iterator iterator = entity.bP().iterator();
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diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
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index 06991baca..56676f34b 100644
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--- a/src/main/java/net/minecraft/server/World.java
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+++ b/src/main/java/net/minecraft/server/World.java
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@@ -992,6 +992,7 @@ public abstract class World implements IEntityAccess, GeneratorAccess, IIBlockAc
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public boolean addEntity(Entity entity, SpawnReason spawnReason) { // Changed signature, added SpawnReason
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org.spigotmc.AsyncCatcher.catchOp( "entity add"); // Spigot
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+ if (entity.valid) { MinecraftServer.LOGGER.error("Attempted Double World add on " + entity, new Throwable()); return true; } // Paper
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if (!CraftEventFactory.doEntityAddEventCalling(this, entity, spawnReason)) {
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return false;
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}
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--
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2.20.1
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