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

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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
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45
patches/server/0465-Add-PlayerLoomPatternSelectEvent.patch Normal file
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@ -0,0 +1,45 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Wed, 25 Nov 2020 16:33:27 -0800
Subject: [PATCH] Add PlayerLoomPatternSelectEvent
diff --git a/src/main/java/net/minecraft/world/inventory/LoomMenu.java b/src/main/java/net/minecraft/world/inventory/LoomMenu.java
index 2de558dd205a1078fdcac1bce256d059b9bf5d5f..dc23b646e55bb66e0aa584d82b75b4b3d233276a 100644
--- a/src/main/java/net/minecraft/world/inventory/LoomMenu.java
+++ b/src/main/java/net/minecraft/world/inventory/LoomMenu.java
@@ -174,8 +174,32 @@ public class LoomMenu extends AbstractContainerMenu {
@Override
public boolean clickMenuButton(net.minecraft.world.entity.player.Player player, int id) {
if (id >= 0 && id < this.selectablePatterns.size()) {
- this.selectedBannerPatternIndex.set(id);
- this.setupResultSlot((Holder) this.selectablePatterns.get(id));
+ // Paper start - Add PlayerLoomPatternSelectEvent
+ int selectablePatternIndex = id;
+ io.papermc.paper.event.player.PlayerLoomPatternSelectEvent event = new io.papermc.paper.event.player.PlayerLoomPatternSelectEvent((Player) player.getBukkitEntity(), ((CraftInventoryLoom) getBukkitView().getTopInventory()), org.bukkit.craftbukkit.block.banner.CraftPatternType.minecraftHolderToBukkit(this.selectablePatterns.get(selectablePatternIndex)));
+ if (!event.callEvent()) {
+ player.containerMenu.sendAllDataToRemote();
+ return false;
+ }
+ final Holder<BannerPattern> eventPattern = org.bukkit.craftbukkit.block.banner.CraftPatternType.bukkitToMinecraftHolder(event.getPatternType());
+ Holder<BannerPattern> selectedPattern = null;
+ for (int i = 0; i < this.selectablePatterns.size(); i++) {
+ final Holder<BannerPattern> holder = this.selectablePatterns.get(i);
+ if (eventPattern.equals(holder)) {
+ selectablePatternIndex = i;
+ selectedPattern = holder;
+ break;
+ }
+ }
+ if (selectedPattern == null) {
+ selectedPattern = eventPattern;
+ selectablePatternIndex = -1;
+ }
+
+ player.containerMenu.sendAllDataToRemote();
+ this.selectedBannerPatternIndex.set(selectablePatternIndex);
+ this.setupResultSlot(java.util.Objects.requireNonNull(selectedPattern, "selectedPattern was null, this is unexpected"));
+ // Paper end - Add PlayerLoomPatternSelectEvent
return true;
} else {
return false;