Big Bang utils for RISC OS

bbutils.zip (7,015 bytes). Suitable for RISC OS 3 and above.

These two C programs allow you to extract and compress the compressed files used by the game Big Bang. These files contain the level graphics (as Sprite files) and the levels themselves (again as Sprite files), so you could construct a fully featured level editor if you wish.

Usage:

BBExplode <infile> <outfile>

  Extract a compressed file. Should also work OK on uncompressed files.

BBImplode <infile> <outfile>

  Compress a file. The compression routine is quite slow and inefficient, so may take a while to run.

Source code to both programs and a rough description of the Big Bang compression algorithm is included.