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c5a10665b8
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.
34 lines
2.1 KiB
Diff
34 lines
2.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Jake Potrebic <jake.m.potrebic@gmail.com>
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Date: Thu, 16 Jun 2022 14:22:56 -0700
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Subject: [PATCH] Don't broadcast messages to command blocks
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Previously the broadcast method would update the last output
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in command blocks, and if called asynchronously, would throw
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an error
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diff --git a/src/main/java/net/minecraft/world/level/BaseCommandBlock.java b/src/main/java/net/minecraft/world/level/BaseCommandBlock.java
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index 8c2dcc4134d96351cee75773214f3f47e71533e9..e6bfcc50cdf728216084bc00a5bb8b6b3b8f72e4 100644
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--- a/src/main/java/net/minecraft/world/level/BaseCommandBlock.java
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+++ b/src/main/java/net/minecraft/world/level/BaseCommandBlock.java
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@@ -178,6 +178,7 @@ public abstract class BaseCommandBlock implements CommandSource {
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@Override
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public void sendSystemMessage(Component message) {
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if (this.trackOutput) {
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+ org.spigotmc.AsyncCatcher.catchOp("sendSystemMessage to a command block"); // Paper - Don't broadcast messages to command blocks
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SimpleDateFormat simpledateformat = BaseCommandBlock.TIME_FORMAT;
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Date date = new Date();
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diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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index 50a4b51ff9b05786ac763f8277bb67c247c04d31..21ad1176a1b0a9445486d7be5efb692e745a78c7 100644
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--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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@@ -1923,7 +1923,7 @@ public final class CraftServer implements Server {
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// Paper end
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Set<CommandSender> recipients = new HashSet<>();
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for (Permissible permissible : this.getPluginManager().getPermissionSubscriptions(permission)) {
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- if (permissible instanceof CommandSender && permissible.hasPermission(permission)) {
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+ if (permissible instanceof CommandSender && !(permissible instanceof org.bukkit.command.BlockCommandSender) && permissible.hasPermission(permission)) { // Paper - Don't broadcast messages to command blocks
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recipients.add((CommandSender) permissible);
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}
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}
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