Paper/patches/server/0482-Reset-shield-blocking-on-dimension-change.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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1.2 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Yive <admin@yive.me>
Date: Sun, 24 Jan 2021 08:55:19 -0800
Subject: [PATCH] Reset shield blocking on dimension change
diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
index 2ea613f818403f8e8ece4b36891738139345cf89..fffd3ae6c4fc0b86057cd915bb4f0987f41a64d0 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -1349,6 +1349,11 @@ public class ServerPlayer extends net.minecraft.world.entity.player.Player {
PlayerChangedWorldEvent changeEvent = new PlayerChangedWorldEvent(this.getBukkitEntity(), worldserver1.getWorld());
this.level().getCraftServer().getPluginManager().callEvent(changeEvent);
// CraftBukkit end
+ // Paper start - Reset shield blocking on dimension change
+ if (this.isBlocking()) {
+ this.stopUsingItem();
+ }
+ // Paper end - Reset shield blocking on dimension change
return this;
}
}