Paper/patches/server/0857-fix-powder-snow-cauldrons-not-turning-to-water.patch
Spottedleaf 01a13871de
Rewrite chunk system (#8177)
Patch documentation to come

Issues with the old system that are fixed now:
- World generation does not scale with cpu cores effectively.
- Relies on the main thread for scheduling and maintaining chunk state, dropping chunk load/generate rates at lower tps.
- Unreliable prioritisation of chunk gen/load calls that block the main thread.
- Shutdown logic is utterly unreliable, as it has to wait for all chunks to unload - is it guaranteed that the chunk system is in a state on shutdown that it can reliably do this? Watchdog shutdown also typically failed due to thread checks, which is now resolved.
- Saving of data is not unified (i.e can save chunk data without saving entity data, poses problems for desync if shutdown is really abnormal.
- Entities are not loaded with chunks. This caused quite a bit of headache for Chunk#getEntities API, but now the new chunk system loads entities with chunks so that they are ready whenever the chunk loads in. Effectively brings the behavior back to 1.16 era, but still storing entities in their own separate regionfiles.

The above list is not complete. The patch documentation will complete it.

New chunk system hard relies on starlight and dataconverter, and most importantly the new concurrent utilities in ConcurrentUtil.

Some of the old async chunk i/o interface (i.e the old file io thread reroutes _some_ calls to the new file io thread) is kept for plugin compat reasons. It will be removed in the next major version of minecraft.

The old legacy chunk system patches have been moved to the removed folder in case we need them again.
2022-09-26 01:02:51 -07:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Thu, 30 Dec 2021 14:02:13 -0800
Subject: [PATCH] fix powder snow cauldrons not turning to water
Powder snow cauldrons should turn to water when
extinguishing an entity
diff --git a/src/main/java/net/minecraft/world/level/block/LayeredCauldronBlock.java b/src/main/java/net/minecraft/world/level/block/LayeredCauldronBlock.java
index 1a7cb12fd3f183c00079d679452a01b8df8d2bbb..a223959f766ac41aff7aeff80606f5e7c37ebf49 100644
--- a/src/main/java/net/minecraft/world/level/block/LayeredCauldronBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/LayeredCauldronBlock.java
@@ -64,7 +64,7 @@ public class LayeredCauldronBlock extends AbstractCauldronBlock {
if (!world.isClientSide && entity.isOnFire() && this.isEntityInsideContent(state, pos, entity)) {
// CraftBukkit start
if (entity.mayInteract(world, pos)) {
- if (!LayeredCauldronBlock.lowerFillLevel(state, world, pos, entity, CauldronLevelChangeEvent.ChangeReason.EXTINGUISH)) {
+ if (!this.handleEntityOnFireInsideWithEvent(state, world, pos, entity)) { // Paper - fix powdered snow cauldron extinguishing entities
return;
}
}
@@ -74,9 +74,15 @@ public class LayeredCauldronBlock extends AbstractCauldronBlock {
}
+ @Deprecated // Paper - use #handleEntityOnFireInsideWithEvent
protected void handleEntityOnFireInside(BlockState state, Level world, BlockPos pos) {
LayeredCauldronBlock.lowerFillLevel(state, world, pos);
}
+ // Paper start
+ protected boolean handleEntityOnFireInsideWithEvent(BlockState state, Level world, BlockPos pos, Entity entity) {
+ return LayeredCauldronBlock.lowerFillLevel(state, world, pos, entity, CauldronLevelChangeEvent.ChangeReason.EXTINGUISH);
+ }
+ // Paper end
public static void lowerFillLevel(BlockState state, Level world, BlockPos pos) {
// CraftBukkit start
diff --git a/src/main/java/net/minecraft/world/level/block/PowderSnowCauldronBlock.java b/src/main/java/net/minecraft/world/level/block/PowderSnowCauldronBlock.java
index 54c8f2ccadd685b43d7ee032a95bfcf193357ce9..7f6b240bbbb773ca49e0e6290169cc81f5529af5 100644
--- a/src/main/java/net/minecraft/world/level/block/PowderSnowCauldronBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/PowderSnowCauldronBlock.java
@@ -16,7 +16,14 @@ public class PowderSnowCauldronBlock extends LayeredCauldronBlock {
}
@Override
+ @Deprecated // Paper - use #handleEntityOnFireInsideWithEvent
protected void handleEntityOnFireInside(BlockState state, Level world, BlockPos pos) {
lowerFillLevel(Blocks.WATER_CAULDRON.defaultBlockState().setValue(LEVEL, state.getValue(LEVEL)), world, pos);
}
+ // Paper - replace powdered snow with water (taken from #handleEntityOnFireInside)
+ @Override
+ protected boolean handleEntityOnFireInsideWithEvent(BlockState state, Level world, BlockPos pos, net.minecraft.world.entity.Entity entity) {
+ return super.handleEntityOnFireInsideWithEvent(Blocks.WATER_CAULDRON.defaultBlockState().setValue(LEVEL, state.getValue(LEVEL)), world, pos, entity);
+ }
+ // Paper end
}