Well if you want to write a simple InSim app, the easiest thing would create a program that logged lap times so you could look at them after the race.
All you would need to do is to send the IS_ISI initialisation packet to LFS, then wait for the IS_LAP packets to arrive, which you could write out to a text file.
I can't really imagine anything simpler than that.
Edit: You might want to also keep a list of driver names and playerIDs, so you can tell which lap belongs to which driver.
All you would need to do is to send the IS_ISI initialisation packet to LFS, then wait for the IS_LAP packets to arrive, which you could write out to a text file.
I can't really imagine anything simpler than that.
Edit: You might want to also keep a list of driver names and playerIDs, so you can tell which lap belongs to which driver.