Paper/patches/server/0748-Fix-custom-piglin-loved-items.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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1.4 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Mon, 4 Jul 2022 21:50:44 -0700
Subject: [PATCH] Fix custom piglin loved items
Upstream didn't modify the isLovedItem check in wantsToPickup
so piglins never actually tried to pickup interestItems
diff --git a/src/main/java/net/minecraft/world/entity/monster/piglin/PiglinAi.java b/src/main/java/net/minecraft/world/entity/monster/piglin/PiglinAi.java
index d601bff8e8f62af78791ad357b51b92faf04e55f..d3d50ec0f4466464c048449d8a844569c447d59b 100644
--- a/src/main/java/net/minecraft/world/entity/monster/piglin/PiglinAi.java
+++ b/src/main/java/net/minecraft/world/entity/monster/piglin/PiglinAi.java
@@ -403,7 +403,7 @@ public class PiglinAi {
} else {
boolean flag = piglin.canAddToInventory(stack);
- return stack.is(Items.GOLD_NUGGET) ? flag : (PiglinAi.isFood(stack) ? !PiglinAi.hasEatenRecently(piglin) && flag : (!PiglinAi.isLovedItem(stack) ? piglin.canReplaceCurrentItem(stack) : PiglinAi.isNotHoldingLovedItemInOffHand(piglin) && flag));
+ return stack.is(Items.GOLD_NUGGET) ? flag : (PiglinAi.isFood(stack) ? !PiglinAi.hasEatenRecently(piglin) && flag : (!PiglinAi.isLovedItem(stack, piglin) ? piglin.canReplaceCurrentItem(stack) : PiglinAi.isNotHoldingLovedItemInOffHand(piglin) && flag)); // Paper - upstream missed isLovedItem check
}
}