Paper/patches/server/0753-Fix-EntityCombustEvent-cancellation-cant-fully-preve.patch
Spottedleaf 8c5b837e05 Rework async chunk api implementation
Firstly, the old methods all routed to the CompletableFuture method.
However, the CF method could not guarantee that if the caller
was off-main that the future would be "completed" on-main. Since
the callback methods used the CF one, this meant that the callback
methods did not guarantee that the callbacks were to be called on
the main thread.

Now, all methods route to getChunkAtAsync(x, z, gen, urgent, cb)
so that the methods with the callback are guaranteed to invoke
the callback on the main thread. The CF behavior remains unchanged;
it may still appear to complete on main if invoked off-main.

Secondly, remove the scheduleOnMain invocation in the async
chunk completion. This unnecessarily delays the callback
by 1 tick.

Thirdly, add getChunksAtAsync(minX, minZ, maxX, maxZ, ...) which
will load chunks within an area. This method is provided as a helper
as keeping all chunks loaded within an area can be complicated to
implement for plugins (due to the lacking ticket API), and is
already implemented internally anyways.

Fourthly, remove the ticket addition that occured with getChunkAt
and getChunkAtAsync. The ticket addition may delay the unloading
of the chunk unnecessarily. It also fixes a very rare timing bug
where the future/callback would be completed after the chunk
unloads.
2024-11-18 23:00:59 -08:00

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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 1f40097a3cc2290516edc519313d139ea4ccd3cd..44d2c476981bc2c24f89009dcf628ece28fc8e32 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -3321,6 +3321,10 @@ 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 c8ca41cd81a72f9bff40f5c1b3bfc1189bf51f98..0cf4133849ed8ff6d4038cc41ede9d3645b31da1 100644
--- a/src/main/java/net/minecraft/world/level/block/BaseFireBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/BaseFireBlock.java
@@ -145,6 +145,10 @@ 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
}