Paper/patches/server/0309-Tracking-Range-Improvements.patch
Bjarne Koll c5a10665b8
Remove wall-time / unused skip tick protection (#11412)
Spigot still maintains some partial implementation of "tick skipping", a
practice in which the MinecraftServer.currentTick field is updated not
by an increment of one per actual tick, but instead set to
System.currentTimeMillis() / 50. This behaviour means that the tracked
tick may "skip" a tick value in case a previous tick took more than the
expected 50ms.

To compensate for this in important paths, spigot/craftbukkit
implements "wall-time". Instead of incrementing/decrementing ticks on
block entities/entities by one for each call to their tick() method,
they instead increment/decrement important values, like
an ItemEntity's age or pickupDelay, by the difference of
`currentTick - lastTick`, where `lastTick` is the value of
`currentTick` during the last tick() call.

These "fixes" however do not play nicely with minecraft's simulation
distance as entities/block entities implementing the above behaviour
would "catch up" their values when moving from a non-ticking chunk to a
ticking one as their `lastTick` value remains stuck on the last tick in
a ticking chunk and hence lead to a large "catch up" once ticked again.

Paper completely removes the "tick skipping" behaviour (See patch
"Further-improve-server-tick-loop"), making the above precautions
completely unnecessary, which also rids paper of the previous described
incompatibility with non-ticking chunks.
2024-09-19 16:36:07 +02:00

79 lines
3.7 KiB
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 5573a5d0d0e10e3c584e821d3e8e7ba64a41a627..ee54706b36bd227edacea2a1b6099009bd652039 100644
--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
@@ -1545,6 +1545,7 @@ 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 73f9563551632a5369ba55e8fe9211afc325e869..bb06f89a29f30144e7e2113e088a503db006a83c 100644
--- a/src/main/java/org/spigotmc/TrackingRange.java
+++ b/src/main/java/org/spigotmc/TrackingRange.java
@@ -7,7 +7,6 @@ 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
{
@@ -30,22 +29,21 @@ 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 Display )
@@ -53,6 +51,7 @@ public class TrackingRange
return config.displayTrackingRange;
} else
{
+ if (entity instanceof net.minecraft.world.entity.boss.enderdragon.EnderDragon) return ((net.minecraft.server.level.ServerLevel)(entity.getCommandSenderWorld())).getChunkSource().chunkMap.serverViewDistance; // Paper - enderdragon is exempt
return config.otherTrackingRange;
}
}