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geforkt von Mirrors/Paper
Paper/patches/server/0261-Prevent-Mob-AI-Rules-from-Loading-Chunks.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

41 Zeilen
2.4 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Mon, 10 Sep 2018 23:56:36 -0400
Subject: [PATCH] Prevent Mob AI Rules from Loading Chunks
diff --git a/src/main/java/net/minecraft/world/entity/ai/goal/RemoveBlockGoal.java b/src/main/java/net/minecraft/world/entity/ai/goal/RemoveBlockGoal.java
index 238c4225bbd4b12bd866603c6eb33182bc9dc89f..bd0cbf4390fc7d00b4bd5008cdf8f6f49df4f69b 100644
--- a/src/main/java/net/minecraft/world/entity/ai/goal/RemoveBlockGoal.java
+++ b/src/main/java/net/minecraft/world/entity/ai/goal/RemoveBlockGoal.java
@@ -133,7 +133,9 @@ public class RemoveBlockGoal extends MoveToBlockGoal {
@Nullable
private BlockPos getPosWithBlock(BlockPos pos, BlockGetter world) {
- if (world.getBlockState(pos).is(this.blockToRemove)) {
+ net.minecraft.world.level.block.state.BlockState block = world.getBlockStateIfLoaded(pos); // Paper
+ if (block == null) return null; // Paper
+ if (block.is(this.blockToRemove)) { // Paper
return pos;
} else {
BlockPos[] ablockposition = new BlockPos[]{pos.below(), pos.west(), pos.east(), pos.north(), pos.south(), pos.below().below()};
@@ -143,7 +145,8 @@ public class RemoveBlockGoal extends MoveToBlockGoal {
for (int j = 0; j < i; ++j) {
BlockPos blockposition1 = ablockposition1[j];
- if (world.getBlockState(blockposition1).is(this.blockToRemove)) {
+ net.minecraft.world.level.block.state.BlockState block2 = world.getBlockStateIfLoaded(blockposition1); // Paper
+ if (block2 != null && block2.is(this.blockToRemove)) { // Paper
return blockposition1;
}
}
@@ -154,7 +157,7 @@ public class RemoveBlockGoal extends MoveToBlockGoal {
@Override
protected boolean isValidTarget(LevelReader world, BlockPos pos) {
- ChunkAccess ichunkaccess = world.getChunk(SectionPos.blockToSectionCoord(pos.getX()), SectionPos.blockToSectionCoord(pos.getZ()), ChunkStatus.FULL, false);
+ ChunkAccess ichunkaccess = world.getChunkIfLoadedImmediately(pos.getX() >> 4, pos.getZ() >> 4); // Paper
return ichunkaccess == null ? false : ichunkaccess.getBlockState(pos).is(this.blockToRemove) && ichunkaccess.getBlockState(pos.above()).isAir() && ichunkaccess.getBlockState(pos.above(2)).isAir();
}