Minecraft Xbox 360 GRF File

tgog Feb 7, 2015

  1. tg

    tgog Newbie
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    I have a file from the 360 version of minecraft that is used in the tutorial world. It is what generates the different structures in the tutorial world and allows for custom spawns and messages. The problem is that this file is compressed with a unique format that I cannot decompress and cannot find anyone else who can that is willing to share. There is one person that has decompressed it but he refuses to let anyone else have access to it. If anyone could me or lead me in the right direction for decompressing this file it would be greatly appreciated. There are a variety of phrases that I know are used in this file. I don't know if it helps with decompression but I will tell you them anyway.
    • MapOptions
    • ApplySchematic
    • GenerateStructure
    • GenerateBox
    • PlaceBlock
    • PlaceContainer
    • PlaceSpawner
    • AddItem
    • AddEnchantment
    • enchantmentId
    • enchantmentLevel
    • itemId
    • quantity
    • food
    • health
    • filename

    Thanks for the help.
     

    Attached Files:

  2. ToxicGas

    ToxicGas Certified Developer Lifetime Gold XPG Retired Staff
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    Am sure you need a Hex editor to edit those type of offsets.
     
  3. tg

    tgog Newbie
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    Yes but the problem is that the file is not in a readable or editable format right now. Hence why I am looking for help decompressing it
     
  4. St

    StealthyExpertX Newbie
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    Yeah i know i been trying to learn how to reformat it so its a readable format and looked at the way its hexed we need a decompressure to change it into a readable format that we could edit if you have had any luck with this tell me what you know and how you got the file and anything else you have learned ok?
     
  5. cy

    cynodont Newbie
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    QuickBMS will do the job for you.
    http://aluigi.altervista.org/quickbms.htm
    You might have QuickBMS.exe already on your machine if you have either one of oPryzeLP's MC360 mod tools installed.

    To keep it simple.
    Create a new folder/directory.
    Copy QuickBMS.exe, extractGRF.bms, compressGRF.bms and requiredGameRules.grf to the folder you created.
    (extractGRF.bms and compressGRF.bms can be found in the attachment.)
    View attachment QuickBMS scripts for GRF files.zip

    Open a command prompt and change directory to new folder/directory you created.
    Run following from command line.

    quickbms.exe -o extractgrf.bms requiredGameRules.grf

    This will decompress the data to a file named requiredGameRules.dmp in the new folder you created.
    You can now edit the file in a binary editor of your choice.

    To compress the file use the following command

    quickBMS -o compressGRF.bms requiredGameRules.dmp

    This will recreate the requiredGameRules.grf file.
    I found that the four bytes starting at position 16 are critical, changing them causes MC to hang.
     
  6. It

    ItzGamerz Newbie
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    I cant seem to change the directory HOW?!
     

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