PaperMC/Spigot-Server-Patches/0354-Fix-issues-with-entity-loss-due-to-unloaded-chunks.patch
Aikar 6fda3fd0ed
(FINAL 1.16.2) Improve Timings support for Active vs Inactive vs Passengers
This makes it so entities that are passengers of other entities no longer count in the parents timings, as well as
tracks them as a separate timers per their tick status.

This lets you see how much time is spent in activated entities vs inactive (as inactive still has to do work)

Passengers is also tracked separately so you can identify "Villagers in Minecarts" vs roaming villagers, as
the lack of ability to move can impact their performance characteristics.

This will likely break any plugin that was naughty and directly messed with our internal timings as this
moves the timings to the EntityTypes object, speeding up creation of Entities to no longer store
a timing handler object per entity.

This will also change the output of the entities in timings to use internal ID's instead of class names.

If a plugin is broken by this, shame them for doing bad things. Paper will not fix it, they will have to fix it.
2020-09-10 19:08:02 -04:00

53 lines
2.8 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Fri, 28 Sep 2018 21:49:53 -0400
Subject: [PATCH] Fix issues with entity loss due to unloaded chunks
Vanilla has risk of losing entities by causing them to be
removed from all chunks if they try to move into an unloaded chunk.
This pretty much means high chance this entity will be lost in this
scenario.
There is another case that adding an entity to the world can fail if
the chunk isn't loaded.
Lots of the server is designed around addEntity never expecting to fail
for these reasons, nor is it really logical.
This change ensures the chunks are always loaded when entities are
added to the world, or a valid entity moves between chunks.
diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
index ded3db003767e4455df1e6956b85ae4fc00f52fb..d9e87ef45970cefa8e9cd49b257b344c316c4dd2 100644
--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
@@ -738,11 +738,18 @@ public class WorldServer extends World implements GeneratorAccessSeed {
int k = MathHelper.floor(entity.locZ() / 16.0D);
if (!entity.inChunk || entity.chunkX != i || entity.chunkY != j || entity.chunkZ != k) {
+ // Paper start - remove entity if its in a chunk more correctly.
+ Chunk currentChunk = entity.getCurrentChunk();
+ if (currentChunk != null) {
+ currentChunk.removeEntity(entity);
+ }
+ // Paper end
+
if (entity.inChunk && this.isChunkLoaded(entity.chunkX, entity.chunkZ)) {
this.getChunkAt(entity.chunkX, entity.chunkZ).a(entity, entity.chunkY);
}
- if (!entity.cj() && !this.isChunkLoaded(i, k)) {
+ if (!entity.valid && !entity.cj() && !this.isChunkLoaded(i, k)) { // Paper - always load chunks to register valid entities location
if (entity.inChunk) {
WorldServer.LOGGER.warn("Entity {} left loaded chunk area", entity);
}
@@ -957,7 +964,7 @@ public class WorldServer extends World implements GeneratorAccessSeed {
return false;
}
// CraftBukkit end
- IChunkAccess ichunkaccess = this.getChunkAt(MathHelper.floor(entity.locX() / 16.0D), MathHelper.floor(entity.locZ() / 16.0D), ChunkStatus.FULL, entity.attachedToPlayer);
+ IChunkAccess ichunkaccess = this.getChunkAt(MathHelper.floor(entity.locX() / 16.0D), MathHelper.floor(entity.locZ() / 16.0D), ChunkStatus.FULL, true); // Paper - always load chunks for entity adds
if (!(ichunkaccess instanceof Chunk)) {
return false;