89 lines
4 KiB
Diff
89 lines
4 KiB
Diff
From c6e17840efbbe99481a355f085e8044eb0a2fb52 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Mon, 23 Jul 2018 22:44:23 -0400
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Subject: [PATCH] Add some Debug to Chunk Entity slices
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If we detect unexpected state, log and try to recover
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This should hopefully avoid duplicate entities ever being created
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if the entity was to end up in 2 different chunk slices
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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 33ce24479..e8af8f419 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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@@ -716,8 +716,34 @@ public class Chunk implements IChunkAccess {
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entity.ae = this.locX;
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entity.af = k;
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entity.ag = this.locZ;
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- this.entitySlices[k].add(entity);
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+
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// Paper start
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+ List<Entity> entitySlice = this.entitySlices[k];
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+ boolean inThis = entitySlice.contains(entity);
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+ List<Entity> currentSlice = entity.entitySlice;
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+ if ((currentSlice != null && currentSlice.contains(entity)) || inThis) {
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+ if (currentSlice == entitySlice || inThis) {
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+ LogManager.getLogger().warn(entity + " was already in this chunk section! Report this to https://github.com/PaperMC/Paper/issues/1302");
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+ new Throwable().printStackTrace();
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+ return;
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+ } else {
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+ LogManager.getLogger().warn(entity + " is still in another ChunkSection! Report this to https://github.com/PaperMC/Paper/issues/1302");
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+
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+ Chunk chunk = entity.getCurrentChunk();
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+ if (chunk != null) {
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+ if (chunk != this) {
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+ LogManager.getLogger().warn(entity + " was in another chunk at that! " + chunk.locX + "," + chunk.locZ);
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+ }
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+ chunk.removeEntity(entity);
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+ } else {
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+ removeEntity(entity);
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+ }
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+ new Throwable().printStackTrace();
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+ }
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+ }
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+ entity.entitySlice = entitySlice;
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+ entitySlice.add(entity);
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+
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this.markDirty();
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if (entity instanceof EntityItem) {
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itemCounts[k]++;
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@@ -747,9 +773,13 @@ public class Chunk implements IChunkAccess {
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i = this.entitySlices.length - 1;
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}
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// Paper start
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- if (!this.entitySlices[i].remove(entity)) {
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- return;
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+ if (entity.entitySlice == null || !entity.entitySlice.contains(entity) || entitySlices[i] == entity.entitySlice) {
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+ entity.entitySlice = null;
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+ } else {
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+ LogManager.getLogger().warn(entity + " was removed from a entitySlice we did not expect. Report this to https://github.com/PaperMC/Paper/issues/1302");
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+ new Throwable().printStackTrace();
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}
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+ if (!this.entitySlices[i].remove(entity)) { return; }
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this.markDirty();
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if (entity instanceof EntityItem) {
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itemCounts[i]--;
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@@ -986,6 +1016,7 @@ public class Chunk implements IChunkAccess {
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}
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// Spigot End
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entity.setCurrentChunk(null); // Paper
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+ entity.entitySlice = null; // Paper
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// Do not pass along players, as doing so can get them stuck outside of time.
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// (which for example disables inventory icon updates and prevents block breaking)
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diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
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index 9339b3255..f2eb479ad 100644
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--- a/src/main/java/net/minecraft/server/Entity.java
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+++ b/src/main/java/net/minecraft/server/Entity.java
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@@ -64,6 +64,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
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}
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}
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};
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+ List<Entity> entitySlice = null;
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// Paper end
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static boolean isLevelAtLeast(NBTTagCompound tag, int level) {
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return tag.hasKey("Bukkit.updateLevel") && tag.getInt("Bukkit.updateLevel") >= level;
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--
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2.18.0
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