TBF (Big File) files are simple file archives with no compression. The game stored models, images and other data in these files.
The TBF file is comprised of three major sections:
The first part of the file is simply a 32-bit unsigned integer describing how many packed files are stored in the archive.
| Description | Size | Comments or example |
|---|---|---|
| Number of files | uint32 |
Next come n file headers, where n is the number of packed files in the archive.
| Description | Size | Comments or example |
|---|---|---|
| Filename length | uint32 | Number of octets in the name of the compressed file |
| Filename | see above | Name of the compressed file (NOT null-terminated) |
| Offset | uint32 | Offset in the raw data stream where this file begins |
| Length | uint32 | Size of this file |
Finally we have the raw data; simply all the n packed files concatenated together.
| Description | Size | Comments or example |
|---|---|---|
| Raw data | variable | For size, see corresponding file header entry |
The BigFile.exe program, provided with the game in the Bin directory, can create TBF archives when passed a list of filenames.
My own tools, tbfpack and tbfunpack, can read and write TBF archives.
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