Paper/patches/server/0823-fix-MapLike-spam-for-missing-key-selector.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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1.9 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Wed, 14 Jun 2023 13:17:40 -0700
Subject: [PATCH] fix MapLike spam for missing key 'selector'
diff --git a/src/main/java/net/minecraft/world/level/gameevent/vibrations/VibrationSystem.java b/src/main/java/net/minecraft/world/level/gameevent/vibrations/VibrationSystem.java
index 8c8c16ce53f5bdf88274cb80767decf0a2612637..0efe935e1f0a25bff95cdb849117b222ae8c603e 100644
--- a/src/main/java/net/minecraft/world/level/gameevent/vibrations/VibrationSystem.java
+++ b/src/main/java/net/minecraft/world/level/gameevent/vibrations/VibrationSystem.java
@@ -353,7 +353,7 @@ public interface VibrationSystem {
public static Codec<VibrationSystem.Data> CODEC = RecordCodecBuilder.create((instance) -> {
return instance.group(VibrationInfo.CODEC.lenientOptionalFieldOf("event").forGetter((vibrationsystem_a) -> {
return Optional.ofNullable(vibrationsystem_a.currentVibration);
- }), VibrationSelector.CODEC.fieldOf("selector").forGetter(VibrationSystem.Data::getSelectionStrategy), ExtraCodecs.NON_NEGATIVE_INT.fieldOf("event_delay").orElse(0).forGetter(VibrationSystem.Data::getTravelTimeInTicks)).apply(instance, (optional, vibrationselector, integer) -> {
+ }), VibrationSelector.CODEC.optionalFieldOf("selector").xmap(o -> o.orElseGet(VibrationSelector::new), Optional::of).forGetter(VibrationSystem.Data::getSelectionStrategy), ExtraCodecs.NON_NEGATIVE_INT.fieldOf("event_delay").orElse(0).forGetter(VibrationSystem.Data::getTravelTimeInTicks)).apply(instance, (optional, vibrationselector, integer) -> { // Paper - fix MapLike spam for missing "selector" in 1.19.2
return new VibrationSystem.Data((VibrationInfo) optional.orElse(null), vibrationselector, integer, true); // CraftBukkit - decompile error
});
});