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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.
19 lines
1.1 KiB
Diff
19 lines
1.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Shane Freeder <theboyetronic@gmail.com>
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Date: Tue, 30 Nov 2021 05:30:35 +0000
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Subject: [PATCH] Prevent ContainerOpenersCounter openCount from going negative
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diff --git a/src/main/java/net/minecraft/world/level/block/entity/ContainerOpenersCounter.java b/src/main/java/net/minecraft/world/level/block/entity/ContainerOpenersCounter.java
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index 43e4e893f0e7eed1959e6ccfa43c39ff00f083b3..86dce6796f92a5b0ae2b1bd837267c4e3f6754d0 100644
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--- a/src/main/java/net/minecraft/world/level/block/entity/ContainerOpenersCounter.java
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+++ b/src/main/java/net/minecraft/world/level/block/entity/ContainerOpenersCounter.java
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@@ -69,6 +69,7 @@ public abstract class ContainerOpenersCounter {
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public void decrementOpeners(Player player, Level world, BlockPos pos, BlockState state) {
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int oldPower = Math.max(0, Math.min(15, this.openCount)); // CraftBukkit - Get power before new viewer is added
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+ if (this.openCount == 0) return; // Paper - Prevent ContainerOpenersCounter openCount from going negative
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int i = this.openCount--;
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// CraftBukkit start - Call redstone event
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