PaperMC/patches/server/0891-Update-entity-data-when-attaching-firework-to-entity.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

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1.2 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: booky10 <boooky10@gmail.com>
Date: Sun, 27 Aug 2023 16:11:31 +0200
Subject: [PATCH] Update entity data when attaching firework to entity
== AT ==
public net.minecraft.world.entity.projectile.FireworkRocketEntity DATA_ATTACHED_TO_TARGET
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftFirework.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftFirework.java
index 2d54cf6f3d9696c55335f0a2057025e2034d4e13..759b6e54db93792c9862b1f1625118ac6fa49d7a 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftFirework.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftFirework.java
@@ -69,6 +69,10 @@ public class CraftFirework extends CraftProjectile implements Firework {
}
this.getHandle().attachedToEntity = (entity != null) ? ((CraftLivingEntity) entity).getHandle() : null;
+ // Paper start - update entity data
+ this.getHandle().getEntityData().set(FireworkRocketEntity.DATA_ATTACHED_TO_TARGET,
+ entity != null ? java.util.OptionalInt.of(entity.getEntityId()) : java.util.OptionalInt.empty());
+ // Paper end - update entity data
return true;
}