Because I am the way I am the first thing what I did after I bought FEZ is not to play it, but to reverse engineer the package format so I can listen to the music outside of the game.
Basic usage:
fezpak.py list <archive> - list contens of .pak archive
fezpak.py pack <archive> [files...] - create a new .pak archive
fezpak.py unpack <archive> - extract .pak archive
fezpak.py mount <archive> <mount-point> - mount archive as read-only file system
The mount command depends on the llfuse
Python package. If it's not available the rest is still working.
This script is compatible with Python 2.7 and 3 (tested with 2.7.5 and 3.3.2).
The .pak file format is extremely simple. It has no file magic. The "header" is
just the number of entries it contains. A entry is just a file name (with \
as path seperator) and the contens of the file. All integers are encoded as
little endian.
File names don't have extensions (like .ogg). I don't know if this has a special
reason just happens to be the way the FEZ developers named the files.
Note: File names may conflict with directory names. If you unpack such an archive
you need to specify -x EXT or --guess-extension to add file name extension to all
extracted files in order resolve the name confilct.
Sometimes there is the exact same file name twice in the archive. In this case the
second occurance will overwrite the first when unpacking. When the archive is mounted
as a file system name conflict resolution is a bit different. In this case ~number
is added between the file name and the extension. number is the first number that
doesn't produce a confict.
I noticed that all doubled file names in the archives of FEZ contain the exact same content, so I guess their existance is a mistake.
┌──────────────────────────────┐
│ │
│ Header │
│ │
│ number of entries │
│ │
│ ┌──────────────────────────┐ │
│ │ │ │
│ │ Entry │ │
│ │ │ │
│ │ file name size │ │
│ │ file name │ │
│ │ file size │ │
│ │ file data │ │
│ │ │ │
│ └──────────────────────────┘ │
│ │
│ ... │
│ │
└──────────────────────────────┘
Offset Size Type Description
0 4 uint32_t number of entries (N)
1 N/A Entry[N] entries
Offset Size Type Description
0 1 uint8_t file name size (N)
1 N char[N] file name, the path seperator is "\"
N+1 4 uint32_t file size (S)
N+5 S uint8_t[S] file data
- psypak: unpack, list and mount Psychonauts .pkg archives
- bgebf: unpack, list and mount Beyond Good and Evil .bf archives
- unvpk: extract, list, check and mount Valve .vpk archives
- u4pak: unpack, list and mount Unreal Engine 4 .pak archives
- t2fbq: unpack, list and mount Trine 2 .fbq archives
Copyright (c) 2014 Mathias Panzenböck
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