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Paper/patches/server/0747-Remove-unnecessary-onTrackingStart-during-navigation.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

29 Zeilen
1.8 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Nassim Jahnke <nassim@njahnke.dev>
Date: Mon, 3 Oct 2022 20:48:19 +0200
Subject: [PATCH] Remove unnecessary onTrackingStart during navigation warning
diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index 1edad85fc5c199dcab66497fa758e48dd14aec8c..faacbdcce7de32f4e3e4a9528ea59808ccaee70b 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -2184,7 +2184,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
}
if (entity instanceof Mob entityinsentient) {
- if (ServerLevel.this.isUpdatingNavigations) {
+ if (false && ServerLevel.this.isUpdatingNavigations) { // Paper - Remove unnecessary onTrackingStart during navigation warning
String s = "onTrackingStart called during navigation iteration";
Util.logAndPauseIfInIde("onTrackingStart called during navigation iteration", new IllegalStateException("onTrackingStart called during navigation iteration"));
@@ -2264,7 +2264,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
}
if (entity instanceof Mob entityinsentient) {
- if (ServerLevel.this.isUpdatingNavigations) {
+ if (false && ServerLevel.this.isUpdatingNavigations) { // Paper - Remove unnecessary onTrackingStart during navigation warning
String s = "onTrackingStart called during navigation iteration";
Util.logAndPauseIfInIde("onTrackingStart called during navigation iteration", new IllegalStateException("onTrackingStart called during navigation iteration"));