3
0
Mirror von https://github.com/PaperMC/Paper.git synchronisiert 2024-11-15 04:20:04 +01:00
Paper/patches/server/0352-Prevent-teleporting-dead-entities.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

25 Zeilen
1.3 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shane Freeder <theboyetronic@gmail.com>
Date: Tue, 3 Mar 2020 05:26:40 +0000
Subject: [PATCH] Prevent teleporting dead entities
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index 119b9b2c45e3321b4197f3e6a34037e3fa99622d..c6bcde25b476ef2362f469bd7cba82ce97cb300c 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -1552,6 +1552,13 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
}
public void internalTeleport(double d0, double d1, double d2, float f, float f1, Set<RelativeMovement> set) { // Paper
+ // Paper start - Prevent teleporting dead entities
+ if (player.isRemoved()) {
+ LOGGER.info("Attempt to teleport removed player {} restricted", player.getScoreboardName());
+ if (server.isDebugging()) io.papermc.paper.util.TraceUtil.dumpTraceForThread("Attempt to teleport removed player");
+ return;
+ }
+ // Paper end - Prevent teleporting dead entities
// CraftBukkit start
if (Float.isNaN(f)) {
f = 0;