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Paper/patches/server/0705-Add-missing-important-BlockStateListPopulator-method.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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Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Owen1212055 <23108066+Owen1212055@users.noreply.github.com>
Date: Sun, 12 Jun 2022 13:25:52 -0400
Subject: [PATCH] Add missing important BlockStateListPopulator methods
Without these methods it causes exceptions due to these being used by certain feature generators.
diff --git a/src/main/java/org/bukkit/craftbukkit/util/BlockStateListPopulator.java b/src/main/java/org/bukkit/craftbukkit/util/BlockStateListPopulator.java
index 072d105f05f3b535d53cfbf8538d1716f9cfcd0e..4d6d637188ef4010a71ea2eb6ea0310aea820511 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/BlockStateListPopulator.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/BlockStateListPopulator.java
@@ -129,7 +129,7 @@ public class BlockStateListPopulator extends DummyGeneratorAccess {
@Override
public boolean isFluidAtPosition(BlockPos pos, Predicate<FluidState> state) {
- return this.world.isFluidAtPosition(pos, state);
+ return state.test(this.getFluidState(pos)); // Paper - fix
}
@Override
@@ -152,4 +152,33 @@ public class BlockStateListPopulator extends DummyGeneratorAccess {
public long nextSubTickCount() {
return this.world.nextSubTickCount();
}
+
+ // Paper start
+ @Override
+ public <T extends BlockEntity> java.util.Optional<T> getBlockEntity(BlockPos pos, net.minecraft.world.level.block.entity.BlockEntityType<T> type) {
+ BlockEntity tileentity = this.getBlockEntity(pos);
+
+ return tileentity != null && tileentity.getType() == type ? (java.util.Optional<T>) java.util.Optional.of(tileentity) : java.util.Optional.empty();
+ }
+
+ @Override
+ public BlockPos getHeightmapPos(net.minecraft.world.level.levelgen.Heightmap.Types heightmap, BlockPos pos) {
+ return world.getHeightmapPos(heightmap, pos);
+ }
+
+ @Override
+ public int getHeight(net.minecraft.world.level.levelgen.Heightmap.Types heightmap, int x, int z) {
+ return world.getHeight(heightmap, x, z);
+ }
+
+ @Override
+ public int getRawBrightness(BlockPos pos, int ambientDarkness) {
+ return world.getRawBrightness(pos, ambientDarkness);
+ }
+
+ @Override
+ public int getBrightness(net.minecraft.world.level.LightLayer type, BlockPos pos) {
+ return world.getBrightness(type, pos);
+ }
+ // Paper end
}
diff --git a/src/main/java/org/bukkit/craftbukkit/util/DummyGeneratorAccess.java b/src/main/java/org/bukkit/craftbukkit/util/DummyGeneratorAccess.java
index 4705aed1dd98378c146bf9e346df1a17f719ad36..daf3c26fce7569761951bfd5594c6726d854a9ff 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/DummyGeneratorAccess.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/DummyGeneratorAccess.java
@@ -258,4 +258,14 @@ public class DummyGeneratorAccess implements WorldGenLevel {
public boolean destroyBlock(BlockPos pos, boolean drop, Entity breakingEntity, int maxUpdateDepth) {
return false; // SPIGOT-6515
}
+
+ // Paper start - add more methods
+ public void scheduleTick(BlockPos pos, Fluid fluid, int delay) {}
+
+ @Override
+ public void scheduleTick(BlockPos pos, Block block, int delay, net.minecraft.world.ticks.TickPriority priority) {}
+
+ @Override
+ public void scheduleTick(BlockPos pos, Fluid fluid, int delay, net.minecraft.world.ticks.TickPriority priority) {}
+ // Paper end - add more methods
}