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Mirror von https://github.com/PaperMC/Paper.git synchronisiert 2024-11-15 04:20:04 +01:00
Paper/patches/server/0895-Fix-NPE-in-SculkBloomEvent-world-access.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

44 Zeilen
2.6 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Lulu13022002 <41980282+Lulu13022002@users.noreply.github.com>
Date: Fri, 20 Oct 2023 19:50:22 +0200
Subject: [PATCH] Fix NPE in SculkBloomEvent world access
diff --git a/src/main/java/net/minecraft/world/level/block/entity/SculkCatalystBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/SculkCatalystBlockEntity.java
index 8d95d129cae03af9ded699047742324807186994..a74732902c0494c67e6acf2fc04581ff9c46b832 100644
--- a/src/main/java/net/minecraft/world/level/block/entity/SculkCatalystBlockEntity.java
+++ b/src/main/java/net/minecraft/world/level/block/entity/SculkCatalystBlockEntity.java
@@ -35,9 +35,16 @@ public class SculkCatalystBlockEntity extends BlockEntity implements GameEventLi
public SculkCatalystBlockEntity(BlockPos pos, BlockState state) {
super(BlockEntityType.SCULK_CATALYST, pos, state);
this.catalystListener = new SculkCatalystBlockEntity.CatalystListener(state, new BlockPositionSource(pos));
- this.catalystListener.level = this.level; // CraftBukkit
}
+ // Paper start - Fix NPE in SculkBloomEvent world access
+ @Override
+ public void setLevel(Level level) {
+ super.setLevel(level);
+ this.catalystListener.sculkSpreader.level = level;
+ }
+ // Paper end - Fix NPE in SculkBloomEvent world access
+
public static void serverTick(Level world, BlockPos pos, BlockState state, SculkCatalystBlockEntity blockEntity) {
org.bukkit.craftbukkit.event.CraftEventFactory.sourceBlockOverride = blockEntity.getBlockPos(); // CraftBukkit - SPIGOT-7068: Add source block override, not the most elegant way but better than passing down a BlockPosition up to five methods deep.
blockEntity.catalystListener.getSculkSpreader().updateCursors(world, pos, world.getRandom(), true);
@@ -67,13 +74,12 @@ public class SculkCatalystBlockEntity extends BlockEntity implements GameEventLi
final SculkSpreader sculkSpreader;
private final BlockState blockState;
private final PositionSource positionSource;
- private Level level; // CraftBukkit
public CatalystListener(BlockState state, PositionSource positionSource) {
this.blockState = state;
this.positionSource = positionSource;
this.sculkSpreader = SculkSpreader.createLevelSpreader();
- this.sculkSpreader.level = this.level; // CraftBukkit
+ // this.sculkSpreader.level = this.level; // CraftBukkit // Paper - Fix NPE in SculkBloomEvent world access
}
@Override