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1) Chunk Registration might kill an entity, don't add it to the world if it did! 2) By default, entities are added to the world per slice iteration. This opens risk of the slices being manipulated during chunk add if an EntityAddToWorldEvent spawns an entity into this chunk. Fix this by differing entity add to world for all entities at the same time 3) If a duplicate entity is attempted to add to the world of an entity, and the original entity is dead, overwrite it as the logic does for unloaod queued entities. Should hopefully finish up issues with #1223
61 lines
2.4 KiB
Diff
61 lines
2.4 KiB
Diff
From 354cae3bd5b0d32cf8c1f8cebdff763013606fd5 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/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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--
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2.18.0
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