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Rework async chunk api implementation

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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.
This commit is contained in:
Spottedleaf 2024-11-18 22:34:32 -08:00
parent de6173b061
commit 8c5b837e05
720 changed files with 978 additions and 1034 deletions
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22
patches/server/0609-Prevent-softlocked-end-exit-portal-generation.patch Normal file
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@ -0,0 +1,22 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Noah van der Aa <ndvdaa@gmail.com>
Date: Mon, 30 Aug 2021 15:22:18 +0200
Subject: [PATCH] Prevent softlocked end exit portal generation
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 3d1a49d865e17a61ff74c6fe0efbd908447ee730..bc6426c04ac1fd19949d587d2b7061895db0893b 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
@@ -469,6 +469,11 @@ public class EndDragonFight {
}
}
+ // Paper start - Prevent "softlocked" exit portal generation
+ if (this.portalLocation.getY() <= this.level.getMinY()) {
+ this.portalLocation = this.portalLocation.atY(this.level.getMinY() + 1);
+ }
+ // Paper end - Prevent "softlocked" exit portal generation
if (worldgenendtrophy.place(FeatureConfiguration.NONE, this.level, this.level.getChunkSource().getGenerator(), RandomSource.create(), this.portalLocation)) {
int i = Mth.positiveCeilDiv(4, 16);