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Mirror von https://github.com/PaperMC/Paper.git synchronisiert 2024-12-15 11:00:06 +01:00
Paper/patches/server/0713-Don-t-broadcast-messages-to-command-blocks.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

35 Zeilen
2.1 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Thu, 16 Jun 2022 14:22:56 -0700
Subject: [PATCH] Don't broadcast messages to command blocks
Previously the broadcast method would update the last output
in command blocks, and if called asynchronously, would throw
an error
diff --git a/src/main/java/net/minecraft/world/level/BaseCommandBlock.java b/src/main/java/net/minecraft/world/level/BaseCommandBlock.java
index 8c2dcc4134d96351cee75773214f3f47e71533e9..e6bfcc50cdf728216084bc00a5bb8b6b3b8f72e4 100644
--- a/src/main/java/net/minecraft/world/level/BaseCommandBlock.java
+++ b/src/main/java/net/minecraft/world/level/BaseCommandBlock.java
@@ -178,6 +178,7 @@ public abstract class BaseCommandBlock implements CommandSource {
@Override
public void sendSystemMessage(Component message) {
if (this.trackOutput) {
+ org.spigotmc.AsyncCatcher.catchOp("sendSystemMessage to a command block"); // Paper - Don't broadcast messages to command blocks
SimpleDateFormat simpledateformat = BaseCommandBlock.TIME_FORMAT;
Date date = new Date();
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index 50a4b51ff9b05786ac763f8277bb67c247c04d31..21ad1176a1b0a9445486d7be5efb692e745a78c7 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -1923,7 +1923,7 @@ public final class CraftServer implements Server {
// Paper end
Set<CommandSender> recipients = new HashSet<>();
for (Permissible permissible : this.getPluginManager().getPermissionSubscriptions(permission)) {
- if (permissible instanceof CommandSender && permissible.hasPermission(permission)) {
+ if (permissible instanceof CommandSender && !(permissible instanceof org.bukkit.command.BlockCommandSender) && permissible.hasPermission(permission)) { // Paper - Don't broadcast messages to command blocks
recipients.add((CommandSender) permissible);
}
}