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Paper-Old/patches/server/0719-Fix-Bee-flower-NPE.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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1.1 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Wed, 6 Jul 2022 14:59:38 -0700
Subject: [PATCH] Fix Bee flower NPE
diff --git a/src/main/java/net/minecraft/world/entity/animal/Bee.java b/src/main/java/net/minecraft/world/entity/animal/Bee.java
index f933654b66f7474dc071da5f10cf1684fdac367a..1b3978f4ea7e8491e0c0cb6de23c141f44fab414 100644
--- a/src/main/java/net/minecraft/world/entity/animal/Bee.java
+++ b/src/main/java/net/minecraft/world/entity/animal/Bee.java
@@ -805,7 +805,7 @@ public class Bee extends Animal implements NeutralMob, FlyingAnimal {
++this.pollinatingTicks;
if (this.pollinatingTicks > 600) {
Bee.this.savedFlowerPos = null;
- } else {
+ } else if (Bee.this.savedFlowerPos != null) { // Paper - add null check since API can manipulate this
Vec3 vec3d = Vec3.atBottomCenterOf(Bee.this.savedFlowerPos).add(0.0D, 0.6000000238418579D, 0.0D);
if (vec3d.distanceTo(Bee.this.position()) > 1.0D) {