3
0
Mirror von https://github.com/PaperMC/Paper.git synchronisiert 2024-11-15 04:20:04 +01:00
Paper/patches/server/0878-Skip-POI-finding-if-stuck-in-vehicle.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

33 Zeilen
1.9 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Paul Sauve <paul@technove.co>
Date: Thu, 18 Feb 2021 13:13:27 -0600
Subject: [PATCH] Skip POI finding if stuck in vehicle
Copyright (C) 2020 Technove LLC
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
diff --git a/src/main/java/net/minecraft/world/entity/ai/behavior/AcquirePoi.java b/src/main/java/net/minecraft/world/entity/ai/behavior/AcquirePoi.java
index 21e50342598f7cd9efa1a39e70bd72d152d98812..e8aa27547e3fa1a42720889c7038d4fb0273e7b5 100644
--- a/src/main/java/net/minecraft/world/entity/ai/behavior/AcquirePoi.java
+++ b/src/main/java/net/minecraft/world/entity/ai/behavior/AcquirePoi.java
@@ -57,6 +57,7 @@ public class AcquirePoi {
return false;
} else {
mutableLong.setValue(time + 20L + (long)world.getRandom().nextInt(20));
+ if (entity.getNavigation().isStuck()) mutableLong.add(200); // Paper - Perf: Wait an additional 10s to check again if they're stuck
PoiManager poiManager = world.getPoiManager();
long2ObjectMap.long2ObjectEntrySet().removeIf(entry -> !entry.getValue().isStillValid(time));
Predicate<BlockPos> predicate2 = pos -> {