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Implement World#regenerateChunk (#7425)

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Co-authored-by: Jason Penilla <11360596+jpenilla@users.noreply.github.com>
This commit is contained in:
Nassim Jahnke 2022-02-05 20:47:11 +01:00
parent b6b252c57d
commit ea776989ad
3 changed files with 167 additions and 0 deletions
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21
patches/api/Implement-regenerateChunk.patch Normal file
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@ -0,0 +1,21 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Nassim Jahnke <nassim@njahnke.dev>
Date: Sat, 5 Feb 2022 20:25:28 +0100
Subject: [PATCH] Implement regenerateChunk
diff --git a/src/main/java/org/bukkit/World.java b/src/main/java/org/bukkit/World.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/org/bukkit/World.java
+++ b/src/main/java/org/bukkit/World.java
@@ -0,0 +0,0 @@ public interface World extends RegionAccessor, WorldInfo, PluginMessageRecipient
* @return Whether the chunk was actually regenerated
*
* @deprecated regenerating a single chunk is not likely to produce the same
- * chunk as before as terrain decoration may be spread across chunks. Use of
- * this method should be avoided as it is known to produce buggy results.
+ * chunk as before as terrain decoration may be spread across chunks. It may
+ * or may not change blocks in the adjacent chunks as well.
*/
@Deprecated
public boolean regenerateChunk(int x, int z);

97
patches/server/Implement-regenerateChunk.patch Normal file
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@ -0,0 +1,97 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Nassim Jahnke <nassim@njahnke.dev>
Date: Mon, 31 Jan 2022 11:21:50 +0100
Subject: [PATCH] Implement regenerateChunk
Co-authored-by: Jason Penilla <11360596+jpenilla@users.noreply.github.com>
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
@@ -0,0 +0,0 @@ import org.bukkit.util.Vector;
public class CraftWorld extends CraftRegionAccessor implements World {
public static final int CUSTOM_DIMENSION_OFFSET = 10;
+ private static final ChunkStatus[] REGEN_CHUNK_STATUSES = {ChunkStatus.BIOMES, ChunkStatus.NOISE, ChunkStatus.SURFACE, ChunkStatus.CARVERS, ChunkStatus.LIQUID_CARVERS, ChunkStatus.FEATURES}; // Paper - implement regenerate chunk method
private final ServerLevel world;
private WorldBorder worldBorder;
@@ -0,0 +0,0 @@ public class CraftWorld extends CraftRegionAccessor implements World {
@Override
public boolean regenerateChunk(int x, int z) {
org.spigotmc.AsyncCatcher.catchOp("chunk regenerate"); // Spigot
- throw new UnsupportedOperationException("Not supported in this Minecraft version! Unless you can fix it, this is not a bug :)");
- /*
- if (!unloadChunk0(x, z, false)) {
- return false;
- }
-
- final long chunkKey = ChunkCoordIntPair.pair(x, z);
- world.getChunkProvider().unloadQueue.remove(chunkKey);
+ // Paper start - implement regenerateChunk method
+ final ServerLevel serverLevel = this.world;
+ final net.minecraft.server.level.ServerChunkCache serverChunkCache = serverLevel.getChunkSource();
+ final ChunkPos chunkPos = new ChunkPos(x, z);
+ final net.minecraft.world.level.chunk.LevelChunk levelChunk = serverChunkCache.getChunk(chunkPos.x, chunkPos.z, true);
+ for (final BlockPos blockPos : BlockPos.betweenClosed(chunkPos.getMinBlockX(), serverLevel.getMinBuildHeight(), chunkPos.getMinBlockZ(), chunkPos.getMaxBlockX(), serverLevel.getMaxBuildHeight() - 1, chunkPos.getMaxBlockZ())) {
+ levelChunk.removeBlockEntity(blockPos);
+ serverLevel.setBlock(blockPos, Blocks.AIR.defaultBlockState(), 16);
+ }
+
+ for (final ChunkStatus chunkStatus : REGEN_CHUNK_STATUSES) {
+ final List<ChunkAccess> list = new ArrayList<>();
+ final int range = Math.max(1, chunkStatus.getRange());
+ for (int chunkX = chunkPos.z - range; chunkX <= chunkPos.z + range; chunkX++) {
+ for (int chunkZ = chunkPos.x - range; chunkZ <= chunkPos.x + range; chunkZ++) {
+ ChunkAccess chunkAccess = serverChunkCache.getChunk(chunkZ, chunkX, chunkStatus.getParent(), true);
+ if (chunkAccess instanceof ImposterProtoChunk accessProtoChunk) {
+ chunkAccess = new ImposterProtoChunk(accessProtoChunk.getWrapped(), true);
+ } else if (chunkAccess instanceof net.minecraft.world.level.chunk.LevelChunk accessLevelChunk) {
+ chunkAccess = new ImposterProtoChunk(accessLevelChunk, true);
+ }
+ list.add(chunkAccess);
+ }
+ }
- net.minecraft.server.Chunk chunk = world.getChunkProvider().generateChunk(x, z);
- PlayerChunk playerChunk = world.getPlayerChunkMap().getChunk(x, z);
- if (playerChunk != null) {
- playerChunk.chunk = chunk;
+ final com.mojang.datafixers.util.Either<ChunkAccess, ChunkHolder.ChunkLoadingFailure> either = chunkStatus.generate(
+ Runnable::run,
+ serverLevel,
+ serverChunkCache.getGenerator(),
+ serverLevel.getStructureManager(),
+ serverChunkCache.getLightEngine(),
+ chunk -> {
+ throw new UnsupportedOperationException("Not creating full chunks here");
+ },
+ list,
+ true
+ ).join();
+ if (chunkStatus == ChunkStatus.NOISE) {
+ either.left().ifPresent(chunk -> net.minecraft.world.level.levelgen.Heightmap.primeHeightmaps(chunk, ChunkStatus.POST_FEATURES));
+ }
}
- if (chunk != null) {
- refreshChunk(x, z);
+ for (final BlockPos blockPos : BlockPos.betweenClosed(chunkPos.getMinBlockX(), serverLevel.getMinBuildHeight(), chunkPos.getMinBlockZ(), chunkPos.getMaxBlockX(), serverLevel.getMaxBuildHeight() - 1, chunkPos.getMaxBlockZ())) {
+ serverChunkCache.blockChanged(blockPos);
}
- return chunk != null;
- */
+ final Set<ChunkPos> chunksToRelight = new HashSet<>(9);
+ for (int chunkX = chunkPos.x - 1; chunkX <= chunkPos.x + 1 ; chunkX++) {
+ for (int chunkZ = chunkPos.z - 1; chunkZ <= chunkPos.z + 1 ; chunkZ++) {
+ chunksToRelight.add(new ChunkPos(chunkX, chunkZ));
+ }
+ }
+ serverChunkCache.getLightEngine().relight(chunksToRelight, pos -> {}, relit -> {});
+ return true;
+ // Paper end
}
@Override

49
patches/server/Only-write-chunk-data-to-disk-if-it-serializes-witho.patch
View file

@ -7,6 +7,35 @@ Subject: [PATCH] Only write chunk data to disk if it serializes without
This ensures at least a valid version of the chunk exists
on disk, even if outdated
diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
+++ b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
@@ -0,0 +0,0 @@ public class RegionFile implements AutoCloseable {
this.pos = chunkcoordintpair;
}
+ // Paper start - don't write garbage data to disk if writing serialization fails
+ @Override
+ public void write(final int b) {
+ if (this.count > 500_000_000) {
+ throw new RegionFileStorage.RegionFileSizeException("Region file too large: " + this.count);
+ }
+ super.write(b);
+ }
+
+ @Override
+ public void write(final byte[] b, final int off, final int len) {
+ if (this.count + len > 500_000_000) {
+ throw new RegionFileStorage.RegionFileSizeException("Region file too large: " + (this.count + len));
+ }
+ super.write(b, off, len);
+ }
+ // Paper end
+
public void close() throws IOException {
ByteBuffer bytebuffer = ByteBuffer.wrap(this.buf, 0, this.count);
diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
@ -16,6 +45,12 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
regionfile.setStatus(pos.x, pos.z, ChunkSerializer.getStatus(nbt)); // Paper - cache status on disk
regionfile.setOversized(pos.x, pos.z, false); // Paper - We don't do this anymore, mojang stores differently, but clear old meta flag if it exists to get rid of our own meta file once last oversized is gone
+ dataoutputstream.close(); // Paper - only write if successful
+ // Paper start - don't write garbage data to disk if writing serialization fails
+ } catch (RegionFileSizeException e) {
+ attempts = 5; // Don't retry
+ regionfile.clear(pos);
+ throw e;
+ // Paper end - don't write garbage data to disk if writing serialization fails
} catch (Throwable throwable) {
if (dataoutputstream != null) {
try {
@ -36,3 +71,17 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
}
// Paper start
@@ -0,0 +0,0 @@ public class RegionFileStorage implements AutoCloseable {
}
}
+
+ // Paper start
+ public static final class RegionFileSizeException extends RuntimeException {
+
+ public RegionFileSizeException(String message) {
+ super(message);
+ }
+ }
+ // Paper end
}