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PaperMC/patches/server/0412-Reset-Ender-Crystals-on-Dragon-Spawn.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: Aikar <aikar@aikar.co>
Date: Wed, 1 Jun 2016 23:29:17 -0400
Subject: [PATCH] Reset Ender Crystals on Dragon Spawn
Crystals can end up in a bad state in certain conditions which causes
an exception on the expected number of crystals going negative.
This ensures the crystals/pillars are in expected state when the dragon spawns.
See #3522
diff --git a/src/main/java/net/minecraft/world/level/dimension/end/EndDragonFight.java b/src/main/java/net/minecraft/world/level/dimension/end/EndDragonFight.java
index a16229f5eaa9e8320751e4fd1faf016f796d3414..0f34a5ce0352f627099a719b78e530e5e572581a 100644
--- a/src/main/java/net/minecraft/world/level/dimension/end/EndDragonFight.java
+++ b/src/main/java/net/minecraft/world/level/dimension/end/EndDragonFight.java
@@ -475,6 +475,7 @@ public class EndDragonFight {
entityenderdragon.moveTo((double) this.origin.getX(), (double) (128 + this.origin.getY()), (double) this.origin.getZ(), this.level.random.nextFloat() * 360.0F, 0.0F);
this.level.addFreshEntity(entityenderdragon);
this.dragonUUID = entityenderdragon.getUUID();
+ this.resetSpikeCrystals(); // Paper - Reset ender crystals on dragon spawn
}
return entityenderdragon;