106 lines
4.9 KiB
Diff
106 lines
4.9 KiB
Diff
From a03528da903b6a8261c06c40ad9fde7267b3434e 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 56a74c6062..fd1e53febb 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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@@ -911,11 +911,12 @@ public class Chunk implements IChunkAccess {
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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 a97e024ec4..bd52bf6561 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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@@ -561,11 +561,22 @@ public class ChunkRegionLoader implements IChunkLoader, IAsyncChunkSaver {
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Iterator iterator;
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+ java.util.List<Entity> toUpdate = new java.util.ArrayList<>(); // Paper
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for (int j = 0; j < chunk.getEntitySlices().length; ++j) {
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iterator = chunk.getEntitySlices()[j].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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NBTTagCompound nbttagcompound1 = new NBTTagCompound();
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if (entity.d(nbttagcompound1)) {
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@@ -574,6 +585,11 @@ 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 6d80e55c19..27398806d3 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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@@ -1053,7 +1053,7 @@ public abstract class World implements GeneratorAccess, IIBlockAccess, AutoClose
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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 7a9f28421b..b57e1ff364 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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@@ -992,7 +992,7 @@ 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.g.contains(entity1)) {
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+ if (this.g.contains(entity1) || entity1.dead) { // Paper - overwrite the current dead one
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this.g.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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