Unpacks asset archive from MotorStorm, cache_ps3.dat.
| Offset | Value |
|---|---|
| 0x0 | RA header 52 41 00 05 |
| 0x4 | Unpacked blob size. Always 0x8000 except for the last chunk. |
| 0x8 | Chunk size. Add 0x10 to this value to get the offset of next chunk. |
| 0xd | Whether this chunk is uncompressed or not. |
- Python 3.4+.
- Binaries found in releases for your platform.
- cache_ps3.dat and cache_ps3.txt from the game.
Run the unpacker:
MSMV-unpacker-win64.exe -c "/path/to/cache_ps3.dat" -u "/path/to/uncompressed_blob_save_location"
Run splitter script:
python3 cache_ps3_file_split.py -i "/path/to/uncompressed_blob_file" -t "/path/to/cache_ps3.txt" -f "/path/to/output_folder/"
Launch either of these with the -h flag for additional information. Both of these will search in, and save to, the current directory if you don't specify something else.
- NTSC-U [BCUS-98137] 1.00
- PAL [BCES-00006] 1.00
The main obstacle right now is figuring how the hashing algorithm and look-up works with the cache_ps3.bin and cache_ps3.chk files. This would mean:
cache_ps3.txtno longer needed for splitting the uncompressed blob into individual files.- Support for the 3.10 versions and the Japanese [BCJS-30004] 1.00 release, neither of which contain
cache_ps3.txt.
The unpacking algorithm was minimally modified from the output of the decompiled code the game uses for the same purpose. Credit to the developers at Evolution Studios who made the original.