FPS Limit and game Speed calibration

[salem-ok]

Not knowing anything about gamedev, I've made a very crude attempt to adapt the game speed to the host performance:

                            current_fps = round(1000/frame_duration)
                            if current_fps <= 90 and current_fps > 0:
                                pysprint_car.frame_rate_speed_modifier = 1 + (100/current_fps)/11
                                pysprint_car.rotation_step_modifier =  1 + (100/current_fps)/14
                            else:
                                pysprint_car.frame_rate_speed_modifier = 1
                                pysprint_car.rotation_step_modifier =  1

The result is not perfect and depending on your computer speed you will not be able to compare lap times like for like today.

This is a MUST before implementing network play.