mirrors/papermc
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages 1 Wiki Activity Actions

Remove wall-time / unused skip tick protection (#11412)

Browse source 
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.
This commit is contained in:
Bjarne Koll 2024-09-19 16:36:07 +02:00 • committed by GitHub
parent 5c82955733
commit c5a10665b8
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
794 changed files with 402 additions and 282 deletions
Download patch file Download diff file Expand all files Collapse all files

54
patches/server/0654-Fix-NotePlayEvent.patch Normal file
View file

@ -0,0 +1,54 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Kieran Wallbanks <kieran.wallbanks@gmail.com>
Date: Mon, 21 Jun 2021 14:23:50 +0100
Subject: [PATCH] Fix NotePlayEvent
== AT ==
public org.bukkit.craftbukkit.block.data.CraftBlockData toNMS(Ljava/lang/Enum;Ljava/lang/Class;)Ljava/lang/Enum;
diff --git a/src/main/java/net/minecraft/world/level/block/NoteBlock.java b/src/main/java/net/minecraft/world/level/block/NoteBlock.java
index 6215f096849f48843d6e25875b8b71f6827ec0a5..f77d51d10e01fc4eaf5516c05c8be0ef7a425893 100644
--- a/src/main/java/net/minecraft/world/level/block/NoteBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/NoteBlock.java
@@ -94,11 +94,12 @@ public class NoteBlock extends Block {
private void playNote(@Nullable Entity entity, BlockState state, Level world, BlockPos pos) {
if (((NoteBlockInstrument) state.getValue(NoteBlock.INSTRUMENT)).worksAboveNoteBlock() || world.getBlockState(pos.above()).isAir()) {
// CraftBukkit start
- org.bukkit.event.block.NotePlayEvent event = org.bukkit.craftbukkit.event.CraftEventFactory.callNotePlayEvent(world, pos, state.getValue(NoteBlock.INSTRUMENT), state.getValue(NoteBlock.NOTE));
- if (event.isCancelled()) {
- return;
- }
+ // org.bukkit.event.block.NotePlayEvent event = org.bukkit.craftbukkit.event.CraftEventFactory.callNotePlayEvent(world, pos, state.getValue(NoteBlock.INSTRUMENT), state.getValue(NoteBlock.NOTE));
+ // if (event.isCancelled()) {
+ // return;
+ // }
// CraftBukkit end
+ // Paper - move NotePlayEvent call to fix instrument/note changes; TODO any way to cancel the game event?
world.blockEvent(pos, this, 0, 0);
world.gameEvent(entity, (Holder) GameEvent.NOTE_BLOCK_PLAY, pos);
}
@@ -138,10 +139,14 @@ public class NoteBlock extends Block {
@Override
protected boolean triggerEvent(BlockState state, Level world, BlockPos pos, int type, int data) {
NoteBlockInstrument blockpropertyinstrument = (NoteBlockInstrument) state.getValue(NoteBlock.INSTRUMENT);
+ // Paper start - move NotePlayEvent call to fix instrument/note changes
+ org.bukkit.event.block.NotePlayEvent event = org.bukkit.craftbukkit.event.CraftEventFactory.callNotePlayEvent(world, pos, blockpropertyinstrument, state.getValue(NOTE));
+ if (event.isCancelled()) return false;
+ // Paper end - move NotePlayEvent call to fix instrument/note changes
float f;
if (blockpropertyinstrument.isTunable()) {
- int k = (Integer) state.getValue(NoteBlock.NOTE);
+ int k = event.getNote().getId(); // Paper - move NotePlayEvent call to fix instrument/note changes
f = NoteBlock.getPitchFromNote(k);
world.addParticle(ParticleTypes.NOTE, (double) pos.getX() + 0.5D, (double) pos.getY() + 1.2D, (double) pos.getZ() + 0.5D, (double) k / 24.0D, 0.0D, 0.0D);
@@ -160,7 +165,7 @@ public class NoteBlock extends Block {
holder = Holder.direct(SoundEvent.createVariableRangeEvent(minecraftkey));
} else {
- holder = blockpropertyinstrument.getSoundEvent();
+ holder = org.bukkit.craftbukkit.block.data.CraftBlockData.toNMS(event.getInstrument(), NoteBlockInstrument.class).getSoundEvent(); // Paper - move NotePlayEvent call to fix instrument/note changes
}
world.playSeededSound((Player) null, (double) pos.getX() + 0.5D, (double) pos.getY() + 0.5D, (double) pos.getZ() + 0.5D, holder, SoundSource.RECORDS, 3.0F, f, world.random.nextLong());