Paper/patches/server/0350-Tracking-Range-Improvements.patch
Spottedleaf 01a13871de
Rewrite chunk system (#8177)
Patch documentation to come

Issues with the old system that are fixed now:
- World generation does not scale with cpu cores effectively.
- Relies on the main thread for scheduling and maintaining chunk state, dropping chunk load/generate rates at lower tps.
- Unreliable prioritisation of chunk gen/load calls that block the main thread.
- Shutdown logic is utterly unreliable, as it has to wait for all chunks to unload - is it guaranteed that the chunk system is in a state on shutdown that it can reliably do this? Watchdog shutdown also typically failed due to thread checks, which is now resolved.
- Saving of data is not unified (i.e can save chunk data without saving entity data, poses problems for desync if shutdown is really abnormal.
- Entities are not loaded with chunks. This caused quite a bit of headache for Chunk#getEntities API, but now the new chunk system loads entities with chunks so that they are ready whenever the chunk loads in. Effectively brings the behavior back to 1.16 era, but still storing entities in their own separate regionfiles.

The above list is not complete. The patch documentation will complete it.

New chunk system hard relies on starlight and dataconverter, and most importantly the new concurrent utilities in ConcurrentUtil.

Some of the old async chunk i/o interface (i.e the old file io thread reroutes _some_ calls to the new file io thread) is kept for plugin compat reasons. It will be removed in the next major version of minecraft.

The old legacy chunk system patches have been moved to the removed folder in case we need them again.
2022-09-26 01:02:51 -07:00

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Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: kickash32 <kickash32@gmail.com>
Date: Sat, 21 Dec 2019 15:22:09 -0500
Subject: [PATCH] Tracking Range Improvements
Sets tracking range of watermobs to animals instead of misc and simplifies code
Also ignores Enderdragon, defaulting it to Mojang's setting
diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
index e3296ca34a47f37cdb3f475fcc66c2412fd39ee0..3f1bd5e0efa72e8805fcf74f20c0d46f67cfde6b 100644
--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
@@ -1287,6 +1287,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
while (iterator.hasNext()) {
Entity entity = (Entity) iterator.next();
int j = entity.getType().clientTrackingRange() * 16;
+ j = org.spigotmc.TrackingRange.getEntityTrackingRange(entity, j); // Paper
if (j > i) {
i = j;
diff --git a/src/main/java/org/spigotmc/TrackingRange.java b/src/main/java/org/spigotmc/TrackingRange.java
index 2d5cb8991e368372f1ab227735aac0c060deb199..55ce69b5fe097841d00ef5c241459dce9bb0d4db 100644
--- a/src/main/java/org/spigotmc/TrackingRange.java
+++ b/src/main/java/org/spigotmc/TrackingRange.java
@@ -6,7 +6,6 @@ import net.minecraft.world.entity.ExperienceOrb;
import net.minecraft.world.entity.decoration.ItemFrame;
import net.minecraft.world.entity.decoration.Painting;
import net.minecraft.world.entity.item.ItemEntity;
-import net.minecraft.world.entity.monster.Ghast;
public class TrackingRange
{
@@ -29,26 +28,26 @@ public class TrackingRange
if ( entity instanceof ServerPlayer )
{
return config.playerTrackingRange;
- } else if ( entity.activationType == ActivationRange.ActivationType.MONSTER || entity.activationType == ActivationRange.ActivationType.RAIDER )
- {
- return config.monsterTrackingRange;
- } else if ( entity instanceof Ghast )
- {
- if ( config.monsterTrackingRange > config.monsterActivationRange )
- {
+ // Paper start - Simplify and set water mobs to animal tracking range
+ }
+ switch (entity.activationType) {
+ case RAIDER:
+ case MONSTER:
+ case FLYING_MONSTER:
return config.monsterTrackingRange;
- } else
- {
- return config.monsterActivationRange;
- }
- } else if ( entity.activationType == ActivationRange.ActivationType.ANIMAL )
- {
- return config.animalTrackingRange;
- } else if ( entity instanceof ItemFrame || entity instanceof Painting || entity instanceof ItemEntity || entity instanceof ExperienceOrb )
+ case WATER:
+ case VILLAGER:
+ case ANIMAL:
+ return config.animalTrackingRange;
+ case MISC:
+ }
+ if ( entity instanceof ItemFrame || entity instanceof Painting || entity instanceof ItemEntity || entity instanceof ExperienceOrb )
+ // Paper end
{
return config.miscTrackingRange;
} else
{
+ if (entity instanceof net.minecraft.world.entity.boss.enderdragon.EnderDragon) return ((net.minecraft.server.level.ServerLevel)(entity.getCommandSenderWorld())).getChunkSource().chunkMap.getEffectiveViewDistance(); // Paper - enderdragon is exempt
return config.otherTrackingRange;
}
}