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See https://github.com/PaperMC/Paper/issues/1223 Should fix Vanilla bugs Minecraft is saving invalid entities to the chunk files. Avoid saving bad data, and also make improvements to handle loading these chunks. Any invalid entity will be instant killed, so lets avoid adding it to the world... This lets us be safer about the dupe UUID resolver too, as now we can ignore instant killed entities and avoid risk of duplicating an invalid entity. This should reduce log occurrences of dupe uuid messages. Also reduce the logging spam overall.
105 lines
4.8 KiB
Diff
105 lines
4.8 KiB
Diff
From 192eaaeea08d9440107cf701c7d769341386855f Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Thu, 26 Jul 2018 00:11:12 -0400
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Subject: [PATCH] Prevent Saving Bad entities to chunks
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See https://github.com/PaperMC/Paper/issues/1223
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Minecraft is saving invalid entities to the chunk files.
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Avoid saving bad data, and also make improvements to handle
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loading these chunks. Any invalid entity will be instant killed,
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so lets avoid adding it to the world...
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This lets us be safer about the dupe UUID resolver too, as now
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we can ignore instant killed entities and avoid risk of duplicating
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an invalid entity.
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This should reduce log occurrences of dupe uuid messages.
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diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
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index be0b411e5c..e5a5217429 100644
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--- a/src/main/java/net/minecraft/server/Chunk.java
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+++ b/src/main/java/net/minecraft/server/Chunk.java
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@@ -897,11 +897,12 @@ public class Chunk {
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Map<UUID, Entity> thisChunk = new HashMap<>();
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for (Iterator<Entity> iterator = ((List<Entity>) entityslice).iterator(); iterator.hasNext(); ) {
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Entity entity = iterator.next();
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+ if (entity.dead) continue;
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Entity other = ((WorldServer) world).entitiesByUUID.get(entity.uniqueID);
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if (other == null) {
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other = thisChunk.get(entity.uniqueID);
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}
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- if (other != null) {
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+ if (other != null && !other.dead) {
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switch (mode) {
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case REGEN: {
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entity.setUUID(UUID.randomUUID());
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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 bcce5e8b7e..bad287fca4 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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@@ -346,11 +346,22 @@ public class ChunkRegionLoader implements IChunkLoader, IAsyncChunkSaver {
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Iterator iterator;
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+ List<Entity> toUpdate = new java.util.ArrayList<>(); // Paper
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for (i = 0; i < chunk.getEntitySlices().length; ++i) {
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iterator = chunk.getEntitySlices()[i].iterator();
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while (iterator.hasNext()) {
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Entity entity = (Entity) iterator.next();
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+ // Paper start
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+ if ((int)Math.floor(entity.locX) >> 4 != chunk.locX || (int)Math.floor(entity.locZ) >> 4 != chunk.locZ) {
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+ LogManager.getLogger().warn(entity + " is not in this chunk, skipping save. This a bug fix to a vanilla bug. Do not report this to PaperMC please.");
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+ toUpdate.add(entity);
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+ continue;
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+ }
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+ if (entity.dead) {
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+ continue;
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+ }
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+ // Paper end
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nbttagcompound1 = new NBTTagCompound();
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if (entity.d(nbttagcompound1)) {
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@@ -359,6 +370,11 @@ public class ChunkRegionLoader implements IChunkLoader, IAsyncChunkSaver {
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}
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}
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}
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+ // Paper start - move entities to the correct chunk
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+ for (Entity entity : toUpdate) {
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+ world.entityJoinedWorld(entity, false);
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+ }
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+ // Paper end
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nbttagcompound.set("Entities", nbttaglist1);
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NBTTagList nbttaglist2 = new NBTTagList();
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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 52adee8806..c2b92ad3a5 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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@@ -1202,7 +1202,7 @@ public abstract class World implements IBlockAccess {
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}
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this.getChunkAt(i, j).a(entity);
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- this.entityList.add(entity);
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+ if (!entity.dead) this.entityList.add(entity); // Paper - don't add dead entities, chunk registration may of killed it
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this.b(entity);
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return true;
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}
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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 1244baf45a..1763d9f94d 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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@@ -1173,7 +1173,7 @@ public class WorldServer extends World implements IAsyncTaskHandler {
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if (this.entitiesByUUID.containsKey(uuid)) {
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Entity entity1 = (Entity) this.entitiesByUUID.get(uuid);
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- if (this.f.contains(entity1)) {
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+ if (this.f.contains(entity1) || entity1.dead) { // Paper - overwrite the current dead one
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this.f.remove(entity1);
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} else {
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if (!(entity instanceof EntityHuman)) {
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--
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2.18.0
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