Paper/patches/server/0589-Fix-issues-with-mob-conversion.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

60 lines
3.2 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Sun, 24 Oct 2021 20:29:45 -0700
Subject: [PATCH] Fix issues with mob conversion
diff --git a/src/main/java/net/minecraft/world/entity/monster/Skeleton.java b/src/main/java/net/minecraft/world/entity/monster/Skeleton.java
index 44313973318cc330bb0288ec5b857c61d4c8f9be..cee42ae2b75c29c89e7fc5b1c77d3b45ce40e9ba 100644
--- a/src/main/java/net/minecraft/world/entity/monster/Skeleton.java
+++ b/src/main/java/net/minecraft/world/entity/monster/Skeleton.java
@@ -91,10 +91,15 @@ public class Skeleton extends AbstractSkeleton {
}
protected void doFreezeConversion() {
- this.convertTo(EntityType.STRAY, true, org.bukkit.event.entity.EntityTransformEvent.TransformReason.FROZEN, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.FROZEN); // CraftBukkit - add spawn and transform reasons
+ Stray stray = this.convertTo(EntityType.STRAY, true, org.bukkit.event.entity.EntityTransformEvent.TransformReason.FROZEN, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.FROZEN); // CraftBukkit - add spawn and transform reasons // Paper - Fix issues with mob conversion
if (!this.isSilent()) {
this.level().levelEvent((Player) null, 1048, this.blockPosition(), 0);
}
+ // Paper start - Fix issues with mob conversion; reset conversion time to prevent event spam
+ if (stray == null) {
+ this.conversionTime = 300;
+ }
+ // Paper end - Fix issues with mob conversion
}
diff --git a/src/main/java/net/minecraft/world/entity/monster/hoglin/Hoglin.java b/src/main/java/net/minecraft/world/entity/monster/hoglin/Hoglin.java
index d35214c485dfc3abdb3f2d6683c9293b3b5f035d..d5e0c493f4c348724958193795ceb987765a465f 100644
--- a/src/main/java/net/minecraft/world/entity/monster/hoglin/Hoglin.java
+++ b/src/main/java/net/minecraft/world/entity/monster/hoglin/Hoglin.java
@@ -258,6 +258,11 @@ public class Hoglin extends Animal implements Enemy, HoglinBase {
if (zoglin != null) {
zoglin.addEffect(new MobEffectInstance(MobEffects.CONFUSION, 200, 0));
}
+ // Paper start - Fix issues with mob conversion; reset to prevent event spam
+ else {
+ this.timeInOverworld = 0;
+ }
+ // Paper end - Fix issues with mob conversion
}
@Override
diff --git a/src/main/java/net/minecraft/world/entity/monster/piglin/AbstractPiglin.java b/src/main/java/net/minecraft/world/entity/monster/piglin/AbstractPiglin.java
index 4e4cfbcaa5c236969da288b9d6f9cd7773bf4687..dedbf88e03d5840fa9f5c5198033379701a9a29e 100644
--- a/src/main/java/net/minecraft/world/entity/monster/piglin/AbstractPiglin.java
+++ b/src/main/java/net/minecraft/world/entity/monster/piglin/AbstractPiglin.java
@@ -99,6 +99,11 @@ public abstract class AbstractPiglin extends Monster {
if (entitypigzombie != null) {
entitypigzombie.addEffect(new MobEffectInstance(MobEffects.CONFUSION, 200, 0));
}
+ // Paper start - Fix issues with mob conversion; reset to prevent event spam
+ else {
+ this.timeInOverworld = 0;
+ }
+ // Paper end - Fix issues with mob conversion
}