minecraft region file format

How can I find out what region file has a corrupted chunk in it from the cords? # shiftmca.py - shift Minecraft region files (.mca) by a fixed number of regions. It still includes all the data, including lighting calculations and such, but for example reduces a large, recently distributed world from 8GB to 4.4GB. Completely seperate to world guard. Use Use program mount.nbt(8) to mount the file system from a NBT file or a Region file. To generate an endless world chunks are recycled and built as you move. Share Improve this answer Info on minecraft's region files Minecraft's region files are stored in 3 sections, the first two giving information about where the chunks are stored, and information about the chunks themselves. private void run () { string [] paths = directory.getfiles (regiondir, "*.mca", searchoption.topdirectoryonly); string format = string.format (" { {0}} region { {1}} of {0}", paths.length); int count = 0; foreach (string path in paths) { updatestatus (string.format (format, "reading", count)); updateprogress (count, paths.length); To use WorldEditCUI Forge Edition 3, simply make a selection on a server using WorldEdit, your selection will be instantly displayed on the screen. If there are problems prints warnings. Once this is complete, you're done and . In Command Prompt or your Terminal application, enter the directory of the Region Fixer folder you downloaded. While most of the files are from 2014, there are 3 files from 2017 in the archive that are not corrupted. (v 0.3.3) ##### ##### Scanning world: world ##### ##### World info: There are 541 region files, 10 player files and 19 data files in the world directory. The Minecraft Reader/Writer allows FME to create Minecraft worlds. Simple enough to use, just enter the location of a block, chunk or region file and it'll tell you all you need to know about it. The good news. Run Region Fixer from Command Prompt / Terminal with the command: py regionfixer.py -p 4 --delete-corrupted <full directory path to world folder>. Also it scans the 'level.dat' file and the player ' *.dat' and tries to read them. Occasionally during my work, I need to do a little mathings to figure out where exactly a block is, or, more likely, which file a block is in so I can delete the giant mess I just made. Minecraft is a sandbox indie game originally created by Swedish programmer Markus Notch Persson and later developed and published by Mojang. A Minecraft world file is actually a collection of a number of files that represent the data of a Minecraft game world. That would make 49152 bits or 6144 bytes on an 16x16x16 block area. Minecraft Region Fixer tries to fix corrupted chunks in region files using old backup copies of the Minecraft world. For example, the (64, 0) region has the filename r.2.0.mcr.. The bad news. Coordinate Tools. NOTE: MCR files were introduced with the Beta 1.3 version of Minecraft and were later replaced by the "Anvil" format (.MCA files). I have managed to halve the size of my world by delete the region files. To accomodate this without having large empty files, the Region design is almost like a file system of its own. If you don't have a copy, you can eliminate the corrupted chunks. The Region file format is the binary file format for storing Java Edition chunks from Beta 1.3 to release 1.2. delete_too_small] deleting = list ( zip ( options_delete, c. REGION_PROBLEMS )) for delete, problem in deleting: status = c. REGION_STATUS_TEXT [ problem] The region files already are split up by chunk but be aware the chunk X and Y index are relative to the location of the region. It is possible that the chunks were regenerated by the chunk . I'm trying to read contents mca files, not random obfuscated stuff that show up when I a text editor to open it. Format Version and Information This update makes some internal changes to auto-create the options of regionfixer from a list and changes the utf-8 decoding library to mutf-8 (from https://pypi.org/project/mutf8/ ). Only chunks within view are built. Minecraft Region Interchange (MRI) File Format - pruby/mc_recompress Wiki. U would usually find them on server world files, but in ur singleplayer world, they are under world, DIM-1 and DIM1. 2. """Class used to read Minecraft region files and the chunk information contained within. Get to the TileEntity section of the tag tree, and then you can easily get the . Search, therefore, e.g. There are no buildings there. That would make 96MB as a maximum size on an 32x16x32 chunk area per mcanvil-file. The command format is: cd <full directory path>. The number of chunks never changes. Now go into the folder . Step 3 Running the De-corruption Process A. At some point today, after building a long rail line, I noticed that there is now a 12kb /region/r.1.1.mca in both folders, even though I haven't been to either dimension! Stack Exchange Network Stack Exchange network consists of 182 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Everything is aligned to 4096 bytes, there is a header to find a chunk in the file, and chunks can be moved if they are too large for their sector. At its core, a Minecraft world is composed of an arbitrary number of Region files, and a "level" file. on the Mojang Specifications manufacturer website after an available .MCR is Minecraft Region File update. Assets 2 Dec 19, 2021 Fenixin v0.3.5 cd38d67 Compare Update for Minecraft 1.18.1 # You can't simply rename the r.#.#.mca files, because they contain embedded location. Because only the current version supports the latest MCR file format. You can also use Dinnerbone's coordinate tool to verify this. Minecraft Region format is a data format used in the Java Edition of the Minecraft game, superceding the Minecraft Alpha level format and later superceded by the Minecraft Anvil format.This and other Minecraft formats are extensively documented in the Minecraft Gamepedia wiki.. The level file defines the metadata for the world, while the region files define the blocks that shape the terrain. All the files and folders you should have left over are now level.dat, level.dat_old, region, session.lock, spc.settings and data. Generally this will mean that the terrain would be treated as never visited before and newly explored, and any changes there will be lost. To make sure that your MCR file is not corrupted or virus-infected, get the file again and scan it with antivirus software. I made this using TkInter for python and I had no idea what I was doing. I used the official standalone code here to get the DataInputStream for chunks with a method I made to get all of the chunks in each region file, which were looped through the world file. eg. Tries to fix Minecraft worlds (or region files). Additional note: Removing an entire region file to regenerate a relatively small area can be more destructive than desired. This format reorganises the . The synopsis of the command line is: mount.nbt [-o <fs-options>] [<other-options>] <mount-from-file> <mount-point> The <fs-options> accepts both generic and FS-specific mount options; some of them are useful to specify here; see man page mount.nbt(8) (available below) for a detailed description of each FS . The Anvil file format was officially introduced in Minecraft 1.2. [a] The format took the place of the Alpha level format, which had been in use since the Infdev development phase, where chunks were stored in individual files on the file system. If you delete an entire region file, the game will just recreate it with the current generation rules when chunks need to be loaded there. I've just built a recompression tool which can repack Minecraft region files in to a much smaller form (at a cost of some time). Other than that, nothing else happens. # information (which will cause "relocating" errors). Let me know if I'm wrong. Stack Overflow - Where Developers Learn, Share, & Build Careers This is an unofficial third party format for interchange of Minecraft Anvil regions (.mca files). If there are any problems it prints warnings. Since I only used standard python 3.4 libraries this should work on any opperating system. These usually have the file extension of .mca on them 1 More posts from the Minecraft community 37.0k Posted by u/SmallBlueSlime Each file stores groups of 3232 chunks. Minecraft worlds are using the mcanvil (.mca) format. This format is used since as I know release 1.0. @taveergt the region files are the .mca files found in the world/regions folder. With each DataInputStream, I used a class I found here to get usable NBT data. Region files are 32x32 chunks or 512x512 blocks. - Once Command Prompt is open type "cd (directory to your Minecraft Region Fixer folder) - Next type "regionfixer.py -p 4 --delete-corrupted (directory to your Minecraft world) In the final section, chunks are given as a 4-byte number length, the type of compression it uses, (almost always is zlib, RFC1950) Minecraft Region File Reader A basic Java implementation of the NBT file format used by Minecraft to retrieve information about the state of a generated world. aether.dat . It's okay to delete region files. Tries to fix corrupted chunks in region files using old backup copies of the Minecraft world. 1 2. It also scans the 'level.dat' file and the player '*.dat' and tries to read them. This format stores each block with 12 bits. As you said, you will lose the changes you made to them, but they will safely regenerate. To clear your current selection issue the command //sel. The files are missing in my backup from yesterday, so I know . JoshArgent, Dec 22, 2012. How: There are three problems with the default Minecraft region file format (Anvil): Each chunk is compressed individually Anvil uses a very outdated compression algorithm (zlib) Each chunk is padded to 4096 bytes Linear compresses a whole region file at once, achieving superior compression ratio. 71 64 -814 will be in r.0.-2.mca. Prior to the MCR format, .DAT files were used. Version 1.0. Unfortunately, they contain pristine terrain without any structures. The format consists of a collection of data items in the Minecraft chunk format, which in turn uses the Minecraft NBT . gistfile1.txt. The .mca format is designed for real-time use within Minecraft, and has several features which make it relatively incompressible. Cubes are stored as a byte array allowing you to have 255 block types. Rename Minecraft-Region-Fixer-master to region-fixer Then follow these steps on reducing the file size: 1. PS E:\Minecraft Servers\Minecraft-Region-Fixer-master> python regionfixer.py -p 8 "E:\Minecraft Servers\world" Welcome to Region Fixer! If you don't have a copy, you can eliminate the corrupted chunks making Minecraft regenerate them. In the saves folder go inside your world save folder and then delete all the unnecessary mod files if you have any. It is currently only capable of reading such files, rather than write to them. Minecraft Region Deleter. This python app asks you to select the region folder of your minecraft save and shows the .mca region files in a grid. # Useful to combine multiple worlds into one world, with a region-level granularity. With this last changed issues #144 and #177 should be fixed. Then you can get_timestamp and get_data: for individual chunks in the region by specifying the chunkX or chunkY if they were to always go from 0 to 32: for each region. So some tips for anyone wanting to inflate minecraft chunks, you need to create your seek offset into the .mca file as sectorIndex * 4096 + 7 not sectorIndex * 4096 + 5 and for anyone getting the checksum error from System.IO.Compression.DeflateStream perhaps you need to make sure you are sending it an RFC 1951 buffer and not an RFC 1950 buffer. Thanks for your replies everyone. Upload the Minecraft-Region-Fixer-master folder in the .zip to your multicraft/jar directory. It brings a list of changes and improvements over from the previous file format, Region. But as the Minecraft world is generated on demand, not all Chunks will exist in a region. Minecraft chunk format is a data format used in the Minecraft game, as part of level formats such as the Minecraft Region format and the Minecraft Anvil format.Minecraft "chunks" are, at a high level, 16x256x16 (16x128x16 before the Anvil format was adopted) groups of blocks (voxels) into which the game world is split in storage and some game functionality. Use by creating a new object with the filepath for the region file. B. There appears to be no side effects and everything works fine! .mcgame Minecraft Game Backup .mcworld Minecraft World Backup .mine Minecraft Map Data .mcr Minecraft Region Data .mca Minecraft Anvil Data .dat_mcr Minecraft Level Data Backup .dat_old Minecraft Old Level Data Backup .mcmeta This is my issue: SEVERE Chunk file at -17717,-19751 is in the wrong location; relocating. the options given to region-fixer and it deletes all the region files with problems iterating through all the possible problems. To install the mod: Download the latest version of the WorldEdit CUI Forge Edition 3 for you forge version and copy it to your mods folder. Source here: https://github.com/pruby/mc_recompress/ In this world, I haven't visited the End or the Nether yet, so the /DIM and /DIM-1 folders have both been empty. No other data is stored since face normals and other things are done programatically. The MCA file is a Minecraft Anvil Data. Download the latest archived version of region-fixed from the link provided above. This will confirm the infection, or a false positive, for sure. Dividing by 32 gives the global chunk coordinates, not the region coordinates. It is a vague, subjective thing to distinguish whether the files in question are game data files or Saved Games given that the nature of the game is for the players to build and alter things in the world, making the distinction between "developers" and "players" fuzzy. ago Region files are the files that contains the chunks for a world. The "x" and "z" portions of the region filename can be derived by dividing the chunk coordinates by 32. """ print ( "") options_delete = [ options. Additional comment actions. Additionally, this library does not yet support the conversion from NBT to SNBT and vice versa. One of these 3 files is from region 1.1 where the coordinates 600, 600 are. (opening Command Prompt) - Open Command Prompt by hitting your windows key, going into the search menu and typing CMD, Enter. #8. Yes, they will just regenerate the land from scratch (as it was before any player built on it). 11 mo. There are currently 31 file extension (s) associated to the Minecraft application in our database. Is possible that the chunks for a world cause & quot ; relocating & quot ; ) options_delete = options. Write to them, but in ur singleplayer world, they contain pristine without. Endless world chunks are recycled and built as you move the file again and scan minecraft region file format with antivirus software NBT. 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