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    Python to quickbms

    Programuotojų kampas

    Atrašyta

    Pries cia rasydamas pirma posta pabandziau chatgpt, bet lyg ir nukerpa koda ir "continue" nepadeda. Chatgpt yra man sukures kodu, bet siuo atveju jam gal per sunku. Sitas pyhton kodas is esmes modifikuoja unreal engine failus, kad galima butu atidaryt su senesniu redaktorium naujam redaktoriui skirtus failus.

    Python to quickbms

    Programuotojų kampas

    Sukurta 

    from pathlib import Path
import binascii

bytes_to_read = 2000
guids = {
    "Dev-Blueprints": "B0D832E41F894F0DACCF7EB736FD4AA2",
    "Dev-Build": "E1C64328A22C4D53A36C8E866417BD8C",
    "Dev-Core": "375EC13C06E448FBB50084F0262A717E",
    "Dev-Editor": "E4B068EDF49442E9A231DA0B2E46BB41",
    "Dev-Framework": "CFFC743F43B04480939114DF171D2073",
    "Dev-Mobile": "B02B49B5BB2044E9A30432B752E40360",
    "Dev-Networking": "A4E4105C59A149B5A7C540C4547EDFEE",
    "Dev-Online": "39C831C95AE647DC9A449C173E1C8E7C",
    "Dev-Physics": "78F01B33EBEA4F98B9B484EACCB95AA2",
    "Dev-Platform": "6631380F2D4D43E08009CF276956A95A",
    "Dev-Rendering": "12F88B9F88754AFCA67CD90C383ABD29",
    "Dev-Sequencer": "7B5AE74CD2704C10A95857980B212A5A",
    "Dev-VR": "D72969181DD64BDD9DE264A83CC13884",
    "Dev-LoadTimes": "C2A15278BFE74AFE6C1790FF531DF755",
    "Private-Geometry": "6EACA3D440EC4CC1b7868BED09428FC5",
    "Dev-AnimPhys": "29E575DDE0A346279D10D276232CDCEA",
    "Dev-Anim": "AF43A65D7FD3494798733E8ED9C1BB05",
    "Dev-ReflectionCapture": "6B266CEC1EC74B8FA30BE4D90942FC07",
    "Dev-Automation": "0DF73D61A23F47EAB72789E90C41499A",
    "FortniteMain": "601D1886AC644F84AA16D3DE0DEAC7D6",
    "FortniteRelease": "E70863686B234C5884391B7016265E91",
    "Dev-Enterprise": "9DFFBCD6494F0158E22112823C92A888",
    "Dev-Niagara": "F2AED0AC9AFE416F8664AA7FFA26D6FC",
    "Dev-Destruction": "174F1F0BB4C645A5B13F2EE8D0FB917D",
    "Dev-Physics-Ext": "35F94A83E258406CA31809F59610247C",
    "Dev-PhysicsMaterial-Chaos": "B68FC16E8B1B42E2B453215C058844FE",
    "Dev-CineCamera": "B2E185064273CFC2A54EF4BB758BBA07",
    "Dev-VirtualProduction": "64F58936FD1B42BABA967289D5D0FA4E",
    "Dev-MediaFramework": "6f0ed827a60948959c91998d90180ea4",
    "Release": "9C54D522A8264FBE9421074661B482D0",
}
# Leave these at -1 to just read the asset values. Put some other value here to downgrade the custom version to it
updated_values = {
    "Dev-Rendering": 44,  
    "Dev-Physics-Ext": 40,
    "FortniteMain": 43,
    "Release": 38,
}
target_folder = r"E:\Work\Unreal projects\Retail4262\Content\From427"
asset_types = ["uasset", "umap"]

update_engine_version = True
engine_major_version = 4
engine_minor_version = 26
engine_changelist = 15973114
asset_major_version = 4
asset_minor_version = 27
asset_changelist = 16724560

def collect_files(folder_root, formats):
    result = []
    for fmt in formats:
        for path in Path(folder_root).rglob('*.' + fmt):
            result.append(str(path))
    return result

def build_version_bytes(major, minor, changelist):
    result = bytearray()
    result += major.to_bytes(2, byteorder="little")  # Major version stored in a short
    result += minor.to_bytes(4, byteorder="little")  # Minor version stored in an int
    result += changelist.to_bytes(4, byteorder="little")  # CL stored in an int
    return result

def flip_endianess(orig_bytes):
    result = bytearray([0]*16)
    
    index = 0
    for chunk in range(4):
        for byte_index in [3, 2, 1, 0]:
            result[index] = orig_bytes[chunk * 4 + byte_index]
            index += 1

    return result

guids_bytes = {key:flip_endianess(binascii.unhexlify(value)) for (key, value) in guids.items()}
asset_version_bytes = build_version_bytes(asset_major_version, asset_minor_version, asset_changelist)
engine_version_bytes = build_version_bytes(engine_major_version, engine_minor_version, engine_changelist)
assert(len(asset_version_bytes) == len(engine_version_bytes))

for file_path in collect_files(target_folder, asset_types):
    print(file_path)
    with open(file_path, "r+b") as f:
        chunk = f.read(bytes_to_read)

        print(f"File: '{file_path}'")

        # Update custom versions
        for (entry, new_value) in updated_values.items():
            guid = guids_bytes[entry]
            
            index = chunk.find(guid)
            if index == -1:
                print(f"\tCouldn't find custom version '{entry}'")
                continue

            value_index = index + len(guid)
            asset_value = int.from_bytes(chunk[value_index:value_index+4], byteorder="little")

            if new_value != -1:
                if new_value >= asset_value:
                    print(f"\tLeft '{entry}' at '{chunk[value_index]}'")      
                    continue  
                
                f.seek(value_index)
                f.write(new_value.to_bytes(4, byteorder="little"))

                print(f"\tDowngraded '{entry}' from '{asset_value}' to '{new_value}'")        
            else:
                print(f"\tRead '{entry}' with value '{asset_value}'")        

        # Update engine version (we do this twice because we could have engine and "compatible" changelist)
        if update_engine_version:
            index = chunk.find(asset_version_bytes)
            if index != -1:
                print(f"\tReplaced first occurence of asset version '{binascii.hexlify(asset_version_bytes)}' with '{binascii.hexlify(engine_version_bytes)}'")
                f.seek(index)
                f.write(engine_version_bytes)

            index = chunk.find(asset_version_bytes, index+1)
            if index != -1:
                print(f"\tReplaced second occurence of engine version '{binascii.hexlify(asset_version_bytes)}' with '{binascii.hexlify(engine_version_bytes)}'")
                f.seek(index)
                f.write(engine_version_bytes)
    print("")

    Sveiki, gal kas konvertuotų šį Python kodą į Quickbms scriptą?

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