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Mirror von https://github.com/PaperMC/Paper.git synchronisiert 2024-12-15 02:50:09 +01:00
Paper/patches/server/0345-Don-t-fire-BlockFade-on-worldgen-threads.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

28 Zeilen
1.7 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Thu, 23 Apr 2020 01:36:39 -0400
Subject: [PATCH] Don't fire BlockFade on worldgen threads
diff --git a/src/main/java/net/minecraft/world/level/block/FireBlock.java b/src/main/java/net/minecraft/world/level/block/FireBlock.java
index c1111bd8065b53cb140e4289cb72985f03e6f549..9db6df5f28be559a324ead2fcfbe189eac076e2e 100644
--- a/src/main/java/net/minecraft/world/level/block/FireBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/FireBlock.java
@@ -108,6 +108,7 @@ public class FireBlock extends BaseFireBlock {
@Override
protected BlockState updateShape(BlockState state, Direction direction, BlockState neighborState, LevelAccessor world, BlockPos pos, BlockPos neighborPos) {
// CraftBukkit start
+ if (!(world instanceof ServerLevel)) return this.canSurvive(state, world, pos) ? (BlockState) this.getStateWithAge(world, pos, (Integer) state.getValue(FireBlock.AGE)) : Blocks.AIR.defaultBlockState(); // Paper - don't fire events in world generation
if (!this.canSurvive(state, world, pos)) {
// Suppress during worldgen
if (!(world instanceof Level)) {
@@ -123,7 +124,7 @@ public class FireBlock extends BaseFireBlock {
return blockState.getHandle();
}
}
- return this.getStateWithAge(world, pos, (Integer) state.getValue(FireBlock.AGE));
+ return this.getStateWithAge(world, pos, (Integer) state.getValue(FireBlock.AGE)); // Paper - don't fire events in world generation; diff on change, see "don't fire events in world generation"
// CraftBukkit end
}