Lophine/lophine-server/minecraft-patches/features/0006-Anonymous-Object-Configurable-region-format-framewor.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Helvetica Volubi <suisuroru@blue-millennium.fun>
Date: Sun, 28 Jun 2026 18:54:50 +0800
Subject: [PATCH] Anonymous Object: Configurable region format framework

As requested by the original author, this patch will be anonymous and hide the original commit address.
This patch is used with permission from the original author.
Licensed under: GPL-3.0 (https://www.gnu.org/licenses/gpl-3.0.html)

diff --git a/ca/spottedleaf/moonrise/patches/chunk_system/io/ChunkSystemRegionFileStorage.java b/ca/spottedleaf/moonrise/patches/chunk_system/io/ChunkSystemRegionFileStorage.java
index a814512fcfb85312474ae2c2c21443843bf57831..9d69a022872e06b320bee46329cd8889f74fbbaa 100644
--- a/ca/spottedleaf/moonrise/patches/chunk_system/io/ChunkSystemRegionFileStorage.java
+++ b/ca/spottedleaf/moonrise/patches/chunk_system/io/ChunkSystemRegionFileStorage.java
@@ -8,9 +8,9 @@ public interface ChunkSystemRegionFileStorage {
 
     public boolean moonrise$doesRegionFileNotExistNoIO(final int chunkX, final int chunkZ);
 
-    public RegionFile moonrise$getRegionFileIfLoaded(final int chunkX, final int chunkZ);
+    public io.anonymous.anonymous.data.RegionFile moonrise$getRegionFileIfLoaded(final int chunkX, final int chunkZ); // Anonymous - Configurable region file format
 
-    public RegionFile moonrise$getRegionFileIfExists(final int chunkX, final int chunkZ) throws IOException;
+    public io.anonymous.anonymous.data.RegionFile moonrise$getRegionFileIfExists(final int chunkX, final int chunkZ) throws IOException; // Anonymous - Configurable region file format
 
     public MoonriseRegionFileIO.RegionDataController.WriteData moonrise$startWrite(
             final int chunkX, final int chunkZ, final CompoundTag compound
diff --git a/ca/spottedleaf/moonrise/patches/chunk_system/io/MoonriseRegionFileIO.java b/ca/spottedleaf/moonrise/patches/chunk_system/io/MoonriseRegionFileIO.java
index 3bb9b58ee97464687e348e23b99159226415c267..4c3ad63f17bb4a04f982b36ad3f53d3c0f58bdb5 100644
--- a/ca/spottedleaf/moonrise/patches/chunk_system/io/MoonriseRegionFileIO.java
+++ b/ca/spottedleaf/moonrise/patches/chunk_system/io/MoonriseRegionFileIO.java
@@ -1273,7 +1273,7 @@ public final class MoonriseRegionFileIO {
                 this.regionDataController.finishWrite(this.chunkX, this.chunkZ, writeData);
                 // Paper start - flush regionfiles on save
                 if (this.world.paperConfig().chunks.flushRegionsOnSave) {
-                    final RegionFile regionFile = this.regionDataController.getCache().moonrise$getRegionFileIfLoaded(this.chunkX, this.chunkZ);
+                    final io.anonymous.anonymous.data.RegionFile regionFile = this.regionDataController.getCache().moonrise$getRegionFileIfLoaded(this.chunkX, this.chunkZ); // Anonymous - Configurable region file format
                     if (regionFile != null) {
                         regionFile.flush();
                     } // else: evicted from cache, which should have called flush
@@ -1489,7 +1489,7 @@ public final class MoonriseRegionFileIO {
 
         public static interface IORunnable {
 
-            public void run(final RegionFile regionFile) throws IOException;
+            public void run(final io.anonymous.anonymous.data.RegionFile regionFile) throws IOException; // Anonymous - Configurable region file format
 
         }
     }
diff --git a/ca/spottedleaf/moonrise/patches/chunk_system/storage/ChunkSystemChunkBuffer.java b/ca/spottedleaf/moonrise/patches/chunk_system/storage/ChunkSystemChunkBuffer.java
index 51c126735ace8fdde89ad97b5cab62f244212db0..ea2f45964fb8c617f90938597c230b50d83744aa 100644
--- a/ca/spottedleaf/moonrise/patches/chunk_system/storage/ChunkSystemChunkBuffer.java
+++ b/ca/spottedleaf/moonrise/patches/chunk_system/storage/ChunkSystemChunkBuffer.java
@@ -8,5 +8,5 @@ public interface ChunkSystemChunkBuffer {
 
     public void moonrise$setWriteOnClose(final boolean value);
 
-    public void moonrise$write(final RegionFile regionFile) throws IOException;
+    public void moonrise$write(final io.anonymous.anonymous.data.RegionFile regionFile) throws IOException; // Anonymous - Configurable region file format
 }
diff --git a/net/minecraft/server/MinecraftServer.java b/net/minecraft/server/MinecraftServer.java
index a49c46eb7df50fc3c5587a2c3668ab6edc887107..c74f76b46259204b33b69ad08bb03c81b8b36961 100644
--- a/net/minecraft/server/MinecraftServer.java
+++ b/net/minecraft/server/MinecraftServer.java
@@ -986,10 +986,10 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
         if (flush) {
             for (ServerLevel level : this.getAllLevels()) {
                 String storageName = level.getChunkSource().chunkMap.getStorageName();
-                LOGGER.info("ThreadedAnvilChunkStorage ({}): All chunks are saved", LEGACY_WORLD_NAMES_FOR_REALMS_LOG.getOrDefault(storageName, storageName));
+                LOGGER.info("ThreadedChunkStorage ({}): All chunks are saved", LEGACY_WORLD_NAMES_FOR_REALMS_LOG.getOrDefault(storageName, storageName)); // Anonymous - Configurable region format
             }
 
-            LOGGER.info("ThreadedAnvilChunkStorage: All dimensions are saved");
+            LOGGER.info("ThreadedChunkStorage: All dimensions are saved"); // Anonymous - configurable region format
         }
 
         return result;
diff --git a/net/minecraft/util/worldupdate/FileToUpgrade.java b/net/minecraft/util/worldupdate/FileToUpgrade.java
index a7f2cfa9277c898038f6b9e0a3401db51012b64c..7b96f3ec2738875a3ed7aa34347c0f174b6579c5 100644
--- a/net/minecraft/util/worldupdate/FileToUpgrade.java
+++ b/net/minecraft/util/worldupdate/FileToUpgrade.java
@@ -4,5 +4,5 @@ import java.util.List;
 import net.minecraft.world.level.ChunkPos;
 import net.minecraft.world.level.chunk.storage.RegionFile;
 
-public record FileToUpgrade(RegionFile file, List<ChunkPos> chunksToUpgrade) {
+public record FileToUpgrade(io.anonymous.anonymous.data.RegionFile file, List<ChunkPos> chunksToUpgrade) { // Anonymous - Configurable region file format
 }
diff --git a/net/minecraft/util/worldupdate/RegionStorageUpgrader.java b/net/minecraft/util/worldupdate/RegionStorageUpgrader.java
index b228cd6c54e8c8998923ab332882d99092769c67..2dd3d0afd8f58e5e68a361dd38c95da06b4d133b 100644
--- a/net/minecraft/util/worldupdate/RegionStorageUpgrader.java
+++ b/net/minecraft/util/worldupdate/RegionStorageUpgrader.java
@@ -36,7 +36,7 @@ import org.slf4j.Logger;
 public class RegionStorageUpgrader {
     private static final Logger LOGGER = LogUtils.getLogger();
     private static final String NEW_DIRECTORY_PREFIX = "new_";
-    private static final Pattern REGEX = Pattern.compile("^r\\.(-?[0-9]+)\\.(-?[0-9]+)\\.mca$");
+    private static final Pattern REGEX = Pattern.compile("^r\\.(-?[0-9]+)\\.(-?[0-9]+)\\." + me.earthme.luminol.config.modules.function.RegionFormatConfig.regionFormat.getArgument() + "$"); // Anonymous - Configurable region file format
     private final DataFixer dataFixer;
     private final UpgradeProgress upgradeProgress;
     private final String type;
@@ -176,7 +176,8 @@ public class RegionStorageUpgrader {
                 int zOffset = Integer.parseInt(regex.group(2)) << 5;
                 List<ChunkPos> chunkPositions = Lists.newArrayList();
 
-                try (RegionFile regionSource = new RegionFile(info, regionFile.toPath(), regionFolder, true)) {
+                var regionFileInfo = new io.anonymous.anonymous.utils.RegionCreatorInfo(info, regionFile.toPath(), regionFolder, true); // Anonymous - Configurable region file format
+                try (io.anonymous.anonymous.data.RegionFile regionSource = me.earthme.luminol.config.modules.function.RegionFormatConfig.regionFormat.getCreator().newFile(regionFileInfo)) { // Anonymous - Configurable region file format
                     for (int x = 0; x < 32; x++) {
                         for (int z = 0; z < 32; z++) {
                             ChunkPos pos = new ChunkPos(x + xOffset, z + zOffset);
@@ -253,7 +254,7 @@ public class RegionStorageUpgrader {
         return storage.upgradeChunkTag(chunkTag, this.defaultVersion, this.dataFixContextTag, targetVersion);
     }
 
-    private void onFileFinished(final RegionFile regionFile) {
+    private void onFileFinished(final io.anonymous.anonymous.data.RegionFile regionFile) { // Anonymous - Configurable region file format
         if (this.recreateRegionFiles) {
             if (this.previousWriteFuture != null) {
                 this.previousWriteFuture.join();
diff --git a/net/minecraft/world/level/chunk/storage/RegionFile.java b/net/minecraft/world/level/chunk/storage/RegionFile.java
index 3de7fd2b084c38e72d7a6bc416880a881f514ad3..821924f85a507589a039832be8657e1dc3c0ce0c 100644
--- a/net/minecraft/world/level/chunk/storage/RegionFile.java
+++ b/net/minecraft/world/level/chunk/storage/RegionFile.java
@@ -22,7 +22,7 @@ import net.minecraft.world.level.ChunkPos;
 import org.jspecify.annotations.Nullable;
 import org.slf4j.Logger;
 
-public class RegionFile implements AutoCloseable, ca.spottedleaf.moonrise.patches.chunk_system.storage.ChunkSystemRegionFile { // Paper - rewrite chunk system
+public class RegionFile implements AutoCloseable, ca.spottedleaf.moonrise.patches.chunk_system.storage.ChunkSystemRegionFile , io.anonymous.anonymous.data.RegionFile{ // Paper - rewrite chunk system // Anonymous - Configurable region file format
     private static final Logger LOGGER = LogUtils.getLogger();
     public static final int MAX_CHUNK_SIZE = 500 * 1024 * 1024; // Paper - don't write garbage data to disk if writing serialization fails
     private static final int SECTOR_BYTES = 4096;
@@ -130,7 +130,7 @@ public class RegionFile implements AutoCloseable, ca.spottedleaf.moonrise.patche
         return this.recalculateCount.get();
     }
 
-    boolean recalculateHeader() throws IOException {
+    public boolean recalculateHeader() throws IOException { // Anonymous - Configurable region file format
         if (!this.canRecalcHeader) {
             return false;
         }
@@ -789,7 +789,7 @@ public class RegionFile implements AutoCloseable, ca.spottedleaf.moonrise.patche
         }
     }
 
-    protected synchronized void write(final ChunkPos pos, final ByteBuffer data) throws IOException {
+    public synchronized void write(final ChunkPos pos, final ByteBuffer data) throws IOException { // Anonymous - Configurable region file format
         int offsetIndex = getOffsetIndex(pos);
         int offset = this.offsets.get(offsetIndex);
         int sectorNumber = getSectorNumber(offset);
@@ -907,7 +907,7 @@ public class RegionFile implements AutoCloseable, ca.spottedleaf.moonrise.patche
         }
 
         @Override
-        public final void moonrise$write(final RegionFile regionFile) throws IOException {
+        public final void moonrise$write(final io.anonymous.anonymous.data.RegionFile regionFile) throws IOException { // Anonymous - Configurable region file format
             regionFile.write(this.pos, ByteBuffer.wrap(this.buf, 0, this.count));
         }
         // Paper end - rewrite chunk system
@@ -973,11 +973,11 @@ public class RegionFile implements AutoCloseable, ca.spottedleaf.moonrise.patche
         return (x & 31) + (z & 31) * 32;
     }
 
-    synchronized boolean isOversized(int x, int z) {
+    public synchronized boolean isOversized(int x, int z) { // Anonymous - Configurable region file format
         return this.oversized[getChunkIndex(x, z)] == 1;
     }
 
-    synchronized void setOversized(int x, int z, boolean oversized) throws IOException {
+    public synchronized void setOversized(int x, int z, boolean oversized) throws IOException { // Anonymous - Configurable region file format
         final int offset = getChunkIndex(x, z);
         boolean previous = this.oversized[offset] == 1;
         this.oversized[offset] = (byte) (oversized ? 1 : 0);
@@ -1016,7 +1016,7 @@ public class RegionFile implements AutoCloseable, ca.spottedleaf.moonrise.patche
         return this.path.getParent().resolve(this.path.getFileName().toString().replaceAll("\\.mca$", "") + "_oversized_" + x + "_" + z + ".nbt");
     }
 
-    synchronized net.minecraft.nbt.CompoundTag getOversizedData(int x, int z) throws IOException {
+    public synchronized net.minecraft.nbt.CompoundTag getOversizedData(int x, int z) throws IOException { // Anonymous - Configurable region file format
         Path file = getOversizedFile(x, z);
         try (DataInputStream out = new DataInputStream(new java.io.BufferedInputStream(new java.util.zip.InflaterInputStream(Files.newInputStream(file))))) {
             return net.minecraft.nbt.NbtIo.read((java.io.DataInput) out);
diff --git a/net/minecraft/world/level/chunk/storage/RegionFileStorage.java b/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
index 63b40c420030d935bb81a219fb33defe0946e21f..e0e19f091f6b85d7788259cfcc53cc3db848b68e 100644
--- a/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
+++ b/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
@@ -19,7 +19,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
     private static final org.slf4j.Logger LOGGER = com.mojang.logging.LogUtils.getLogger(); // Paper
     public static final String ANVIL_EXTENSION = ".mca";
     private static final int MAX_CACHE_SIZE = 256;
-    private final Long2ObjectLinkedOpenHashMap<RegionFile> regionCache = new Long2ObjectLinkedOpenHashMap<>();
+    private final Long2ObjectLinkedOpenHashMap<io.anonymous.anonymous.data.RegionFile> regionCache = new Long2ObjectLinkedOpenHashMap<>();  // Anonymous - Configurable region file format
     private final RegionStorageInfo info;
     private final Path folder;
     private final boolean sync;
@@ -30,7 +30,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
     @Nullable
     public static ChunkPos getRegionFileCoordinates(Path file) {
         String fileName = file.getFileName().toString();
-        if (!fileName.startsWith("r.") || !fileName.endsWith(".mca")) {
+        if (!fileName.startsWith("r.") || !fileName.endsWith(getExtensionName())) { // Anonymous - Configurable region file format
             return null;
         }
 
@@ -55,8 +55,32 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
     private static final int MAX_NON_EXISTING_CACHE = 1024 * 4;
     private final it.unimi.dsi.fastutil.longs.LongLinkedOpenHashSet nonExistingRegionFiles = new it.unimi.dsi.fastutil.longs.LongLinkedOpenHashSet();
     private static String getRegionFileName(final int chunkX, final int chunkZ) {
-        return "r." + (chunkX >> REGION_SHIFT) + "." + (chunkZ >> REGION_SHIFT) + ".mca";
+        return "r." + (chunkX >> REGION_SHIFT) + "." + (chunkZ >> REGION_SHIFT) + getExtensionName(); // Anonymous - Configurable region file format
     }
+    // Anonymous start - Configurable region file format
+    public static io.anonymous.anonymous.data.RegionFile createNew(RegionStorageInfo info, Path filePath, Path folder, boolean sync) throws IOException{
+        final io.anonymous.anonymous.enums.EnumRegionFormat regionFormat = me.earthme.luminol.config.modules.function.RegionFormatConfig.regionFormat;
+        final String fullFileName = filePath.getFileName().toString();
+        final String[] fullNameSplit = fullFileName.split("\\.");
+        final String extensionName = fullNameSplit[fullNameSplit.length - 1];
+
+        if (!regionFormat.getArgument().equalsIgnoreCase(extensionName)) {
+            // raise a delayed crash
+            io.papermc.paper.threadedregions.RegionizedServer.getInstance().addTask(() -> {
+                throw new RuntimeException("Invalid region file format: " + extensionName + " expected " + regionFormat.getArgument());
+            });
+
+
+            throw new IOException("Invalid region file format: " + extensionName + " expected " + regionFormat.getArgument());
+        }
+
+        return regionFormat.getCreator().newFile(new io.anonymous.anonymous.utils.RegionCreatorInfo(info, filePath, folder, sync));
+    }
+
+    public static String getExtensionName() {
+        return "." + me.earthme.luminol.config.modules.function.RegionFormatConfig.regionFormat.getArgument();
+    }
+    // Anonymous end
 
     private boolean doesRegionFilePossiblyExist(final long position) {
         synchronized (this.nonExistingRegionFiles) {
@@ -90,15 +114,15 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
     }
 
     @Override
-    public synchronized final RegionFile moonrise$getRegionFileIfLoaded(final int chunkX, final int chunkZ) {
+    public synchronized final io.anonymous.anonymous.data.RegionFile moonrise$getRegionFileIfLoaded(final int chunkX, final int chunkZ) { // Anonymous - Configurable region file format
         return this.regionCache.getAndMoveToFirst(ChunkPos.pack(chunkX >> REGION_SHIFT, chunkZ >> REGION_SHIFT));
     }
 
     @Override
-    public synchronized final RegionFile moonrise$getRegionFileIfExists(final int chunkX, final int chunkZ) throws IOException {
+    public synchronized final io.anonymous.anonymous.data.RegionFile moonrise$getRegionFileIfExists(final int chunkX, final int chunkZ) throws IOException {  // Anonymous - Configurable region file format
         final long key = ChunkPos.pack(chunkX >> REGION_SHIFT, chunkZ >> REGION_SHIFT);
 
-        RegionFile ret = this.regionCache.getAndMoveToFirst(key);
+        io.anonymous.anonymous.data.RegionFile ret = this.regionCache.getAndMoveToFirst(key);  // Anonymous - Configurable region file format
         if (ret != null) {
             return ret;
         }
@@ -124,7 +148,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
 
         FileUtil.createDirectoriesSafe(this.folder);
 
-        ret = new RegionFile(this.info, regionPath, this.folder, this.sync);
+        ret = this.createNew(this.info, regionPath, this.folder, this.sync);  // Anonymous - Configurable region file format
 
         this.regionCache.putAndMoveToFirst(key, ret);
 
@@ -143,7 +167,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
         }
 
         final ChunkPos pos = new ChunkPos(chunkX, chunkZ);
-        final RegionFile regionFile = this.getRegionFile(pos);
+        final io.anonymous.anonymous.data.RegionFile regionFile = this.getRegionFile(pos);  // Anonymous - Configurable region file format
 
         // note: not required to keep regionfile loaded after this call, as the write param takes a regionfile as input
         // (and, the regionfile parameter is unused for writing until the write call)
@@ -177,7 +201,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
     ) throws IOException {
         final ChunkPos pos = new ChunkPos(chunkX, chunkZ);
         if (writeData.result() == ca.spottedleaf.moonrise.patches.chunk_system.io.MoonriseRegionFileIO.RegionDataController.WriteData.WriteResult.DELETE) {
-            final RegionFile regionFile = this.moonrise$getRegionFileIfExists(chunkX, chunkZ);
+            final io.anonymous.anonymous.data.RegionFile regionFile = this.moonrise$getRegionFileIfExists(chunkX, chunkZ);  // Anonymous - Configurable region file format
             if (regionFile != null) {
                 regionFile.clear(pos);
             } // else: didn't exist
@@ -192,7 +216,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
     public final ca.spottedleaf.moonrise.patches.chunk_system.io.MoonriseRegionFileIO.RegionDataController.ReadData moonrise$readData(
         final int chunkX, final int chunkZ
     ) throws IOException {
-        final RegionFile regionFile = this.moonrise$getRegionFileIfExists(chunkX, chunkZ);
+        final io.anonymous.anonymous.data.RegionFile regionFile = this.moonrise$getRegionFileIfExists(chunkX, chunkZ);  // Anonymous - Configurable region file format
 
         final DataInputStream input = regionFile == null ? null : regionFile.getChunkDataInputStream(new ChunkPos(chunkX, chunkZ));
 
@@ -237,7 +261,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
 
             final ChunkPos pos = new ChunkPos(chunkX, chunkZ);
             final ChunkPos headerChunkPos = SerializableChunkData.getChunkCoordinate(ret);
-            final RegionFile regionFile = this.getRegionFile(pos);
+            final io.anonymous.anonymous.data.RegionFile regionFile = this.getRegionFile(pos);  // Anonymous - Configurable region file format
 
             if (regionFile.getRecalculateCount() != readData.recalculateCount()) {
                 return null;
@@ -261,7 +285,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
     }
     // Paper end - rewrite chunk system
     // Paper start - rewrite chunk system
-    public RegionFile getRegionFile(ChunkPos pos) throws IOException {
+    public io.anonymous.anonymous.data.RegionFile getRegionFile(ChunkPos pos) throws IOException {  // Anonymous - Configurable region file format
         return this.getRegionFile(pos, false);
     }
     // Paper end - rewrite chunk system
@@ -273,7 +297,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
         this.isChunkData = info.dfuType()[0] == net.minecraft.util.datafix.DataFixTypes.CHUNK; // Paper - recalculate region file headers
     }
 
-    @org.jetbrains.annotations.Contract("_, false -> !null") private @Nullable RegionFile getRegionFile(final ChunkPos pos, boolean existingOnly) throws IOException { // CraftBukkit
+    @org.jetbrains.annotations.Contract("_, false -> !null") private io.anonymous.anonymous.data.RegionFile getRegionFile(final ChunkPos pos, boolean existingOnly) throws IOException { // CraftBukkit // Anonymous - Configurable region file format
         // Paper start - rewrite chunk system
         if (existingOnly) {
             return this.moonrise$getRegionFileIfExists(pos.x(), pos.z());
@@ -281,7 +305,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
         synchronized (this) {
             final long key = ChunkPos.pack(pos.x() >> REGION_SHIFT, pos.z() >> REGION_SHIFT);
 
-            RegionFile ret = this.regionCache.getAndMoveToFirst(key);
+            io.anonymous.anonymous.data.RegionFile ret = this.regionCache.getAndMoveToFirst(key);  // Anonymous - Configurable region file format
             if (ret != null) {
                 return ret;
             }
@@ -298,7 +322,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
 
             FileUtil.createDirectoriesSafe(this.folder);
 
-            ret = new RegionFile(this.info, regionPath, this.folder, this.sync);
+            ret = this.createNew(this.info, regionPath, this.folder, this.sync); // Anonymous - Configurable region file format
 
             this.regionCache.putAndMoveToFirst(key, ret);
 
@@ -312,7 +336,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
         LOGGER.error("{} ({} - {},{}) Go clean it up to remove this message. /minecraft:tp {} 128 {} - DO NOT REPORT THIS TO PAPER - You may ask for help on Discord, but do not file an issue. These error messages can not be removed.", msg, file.toString().replaceAll(".+[\\\\/]", ""), x, z, x << 4, z << 4);
     }
 
-    private static CompoundTag readOversizedChunk(RegionFile regionfile, ChunkPos chunkCoordinate) throws IOException {
+    private static CompoundTag readOversizedChunk(io.anonymous.anonymous.data.RegionFile regionfile, ChunkPos chunkCoordinate) throws IOException {  // Anonymous - Configurable region file format
         synchronized (regionfile) {
             try (DataInputStream datainputstream = regionfile.getChunkDataInputStream(chunkCoordinate)) {
                 CompoundTag oversizedData = regionfile.getOversizedData(chunkCoordinate.x(), chunkCoordinate.z());
@@ -346,7 +370,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
 
     public @Nullable CompoundTag read(final ChunkPos pos) throws IOException {
         // CraftBukkit start - SPIGOT-5680: There's no good reason to preemptively create files on read, save that for writing
-        RegionFile region = this.getRegionFile(pos, true);
+        io.anonymous.anonymous.data.RegionFile region = this.getRegionFile(pos, true); // Anonymous - Configurable region file format
         if (region == null) {
             return null;
         }
@@ -383,7 +407,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
 
     public void scanChunk(final ChunkPos pos, final StreamTagVisitor scanner) throws IOException {
         // CraftBukkit start - SPIGOT-5680: There's no good reason to preemptively create files on read, save that for writing
-        RegionFile region = this.getRegionFile(pos, true);
+        io.anonymous.anonymous.data.RegionFile region = this.getRegionFile(pos, true); // Anonymous - Configurable region file format
         if (region == null) {
             return;
         }
@@ -398,7 +422,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
 
     public void write(final ChunkPos pos, final @Nullable CompoundTag value) throws IOException {
         if (!SharedConstants.DEBUG_DONT_SAVE_WORLD) {
-            RegionFile region = this.getRegionFile(pos, value == null); // CraftBukkit // Paper - rewrite chunk system
+            io.anonymous.anonymous.data.RegionFile region = this.getRegionFile(pos, value == null); // CraftBukkit // Paper - rewrite chunk system // Anonymous - Configurable region file format
             // Paper start - rewrite chunk system
             if (region == null) {
                 // if the RegionFile doesn't exist, no point in deleting from it
@@ -430,7 +454,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
         // Paper start - rewrite chunk system
         synchronized (this) {
             final ExceptionCollector<IOException> exceptionCollector = new ExceptionCollector<>();
-            for (final RegionFile regionFile : this.regionCache.values()) {
+            for (final io.anonymous.anonymous.data.RegionFile regionFile : this.regionCache.values()) { // Anonymous - Configurable region file format
                 try {
                     regionFile.close();
                 } catch (final IOException ex) {
@@ -446,7 +470,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
         // Paper start - rewrite chunk system
         synchronized (this) {
             final ExceptionCollector<IOException> exceptionCollector = new ExceptionCollector<>();
-            for (final RegionFile regionFile : this.regionCache.values()) {
+            for (final io.anonymous.anonymous.data.RegionFile regionFile : this.regionCache.values()) { // Anonymous - Configurable region file format
                 try {
                     regionFile.flush();
                 } catch (final IOException ex) {