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Wouldubeinta, posted Wed May 15, 2019 4:58 am (47764)

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I was wondering if u can take a look at this file structure and see if it's possible to extract, it looks like BigAnt has changed the Blobset structure completely from previous games. If u need all the files, u can download the Cricket 19 Demo from steam.

This is what I know so far -

# data-0.blobset.pc layout

string BLOB; // Magic - 4 bytes
uint fileAmount;

uint mainCompressedSize;
uint mainUncompressedSize;
uint vramCompressedSize;
uint vramUncompessedSize;
uint24 fileHashName; // 3 bytes
byte folderHashName;
uint reserved; // Not sure what this is used for.

The files themselves are compressed with lzma without a header, they don't seem to have a size for a chunk. I was able to extract a file with 1 chunk, but any more then that I had problems.
Before the compressed data, there is 4 byte data, but I'm not sure what it's used for.

Any help will be much appreciated.

aluigi, posted Sat Jun 01, 2019 10:20 pm (48272)

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So are you sure they files are chunked?
Because there is no field containing this information.

Anyway everything is already extracted and the only "difference" would be to decompress the compressed files, I have just made a script:
http://aluigi.org/bms/cricket_19_blobset.bms

Wouldubeinta, posted Wed Jun 05, 2019 7:23 am (48462)

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aluigi wrote:

So are you sure they files are chunked?
Because there is no field containing this information.

Anyway everything is already extracted and the only "difference" would be to decompress the compressed files, I have just made a script:
http://aluigi.org/bms/cricket_19_blobset.bms

Yes the files are chunked, I think the first 4 bytes is the compressed chunk size but xored. The 4 bytes are only on the compressed chunk data.

aluigi, posted Wed Jun 05, 2019 7:56 am (48468)

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Script 0.1.1

Wouldubeinta, posted Wed Jun 05, 2019 8:45 am (48472)

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aluigi wrote:

Script 0.1.1

Thanks for your help Luigi.