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Mirror von https://github.com/PaperMC/Paper.git synchronisiert 2024-11-15 04:20:04 +01:00
Paper/patches/server/0685-Ensure-entity-passenger-world-matches-ridden-entity.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

21 Zeilen
1.1 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Thu, 31 Mar 2022 05:11:37 -0700
Subject: [PATCH] Ensure entity passenger world matches ridden entity
Bad plugins doing this would cause some obvious problems...
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 7d9ebc71b794d40246cbd43ff4de5795970e7ebe..3bb7e0f6a02b9b1726b8c878271d89a9c6d56c12 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -2687,7 +2687,7 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
}
public boolean startRiding(Entity entity, boolean force) {
- if (entity == this.vehicle) {
+ if (entity == this.vehicle || entity.level != this.level) { // Paper - Ensure entity passenger world matches ridden entity (bad plugins)
return false;
} else if (!entity.couldAcceptPassenger()) {
return false;