Difference between revisions of "Grand Prix Legends File Specs"

Revision as of 20:33, 11 April 2009

Grand Prix Legends File Formats
The following pages give the file specifications for the various files that make up a track in GPL.  Not everything is known yet, and any
help filling in the gaps will be much appreciated.

To start with, some notes:

• The numbers are either 32 bit unsigned integers, or 32bit floating point numbers.  If dissecting by hand, bear in mind that they are
  stored least significant byte first:  1's,  256's,  65536's,  16777216's.  This makes the hex sequence 01 01 00 00 into the
  number 257 (decimal).  In C/C++, to read e.g. a float, do:   float x;   fread(&x, sizeof(float), 1, fileptr);
• Most (all?) of the files & sections within files are of lengths which are a multiple of 4.  An example is the String section of a 3DO file
  where the data is of any length, then padded with 0x20's to an even 4.
• Every file within a DAT file starts with a header section, which is as follows.  The DAT file header is different.