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Mirror von https://github.com/PaperMC/Paper.git synchronisiert 2024-11-15 04:20:04 +01:00
Paper/patches/server/0761-Fix-EntityCombustEvent-cancellation-cant-fully-preve.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

38 Zeilen
2.0 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Denery <dorofeevij@gmail.com>
Date: Mon, 31 Oct 2022 14:20:52 +0300
Subject: [PATCH] Fix EntityCombustEvent cancellation cant fully prevent
entities from being set on fire
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 180a86c419cad9873c53a49c8881ced647a753e0..1aa3396a33e24f3849725769fe58b57374ee7611 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -3193,6 +3193,10 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
pluginManager.callEvent(entityCombustEvent);
if (!entityCombustEvent.isCancelled()) {
this.igniteForSeconds(entityCombustEvent.getDuration(), false);
+ // Paper start - fix EntityCombustEvent cancellation
+ } else {
+ this.setRemainingFireTicks(this.remainingFireTicks - 1);
+ // Paper end - fix EntityCombustEvent cancellation
}
// CraftBukkit end
}
diff --git a/src/main/java/net/minecraft/world/level/block/BaseFireBlock.java b/src/main/java/net/minecraft/world/level/block/BaseFireBlock.java
index 0c5409af685ef1f251db3d9f9e21295c82a1e02a..8b5918dc07f17ae5001c03dc743128fd9520b819 100644
--- a/src/main/java/net/minecraft/world/level/block/BaseFireBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/BaseFireBlock.java
@@ -135,6 +135,10 @@ public abstract class BaseFireBlock extends Block {
if (!event.isCancelled()) {
entity.igniteForSeconds(event.getDuration(), false);
+ // Paper start - fix EntityCombustEvent cancellation
+ } else {
+ entity.setRemainingFireTicks(entity.getRemainingFireTicks() - 1);
+ // Paper end - fix EntityCombustEvent cancellation
}
// CraftBukkit end
}