Paper/patches/server/0652-Fix-xp-reward-for-baby-zombies.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: Sun, 16 Jan 2022 10:34:02 -0800
Subject: [PATCH] Fix xp reward for baby zombies
The field that tracks the xpReward was not
getting reset if the death was cancelled
so this resets it after each call to
Zombie#getExperienceReward
diff --git a/src/main/java/net/minecraft/world/entity/monster/Zombie.java b/src/main/java/net/minecraft/world/entity/monster/Zombie.java
index fd304e7d8305877d56de7a38b8664e5a70bf0c33..2280004638fd19ed018cb3e77d53a018b34ec516 100644
--- a/src/main/java/net/minecraft/world/entity/monster/Zombie.java
+++ b/src/main/java/net/minecraft/world/entity/monster/Zombie.java
@@ -176,11 +176,16 @@ public class Zombie extends Monster {
@Override
protected int getBaseExperienceReward() {
+ final int previousReward = this.xpReward; // Paper - store previous value to reset after calculating XP reward
if (this.isBaby()) {
this.xpReward = (int) ((double) this.xpReward * 2.5D);
}
- return super.getBaseExperienceReward();
+ // Paper start - store previous value to reset after calculating XP reward
+ int reward = super.getBaseExperienceReward();
+ this.xpReward = previousReward;
+ return reward;
+ // Paper end - store previous value to reset after calculating XP reward
}
@Override