Game cheats. These are what players type in, e.g,
User configuration options.
The main loop driver. The primary function is the main loop which attempts to
run all tics then display the result. Handling of actual game-exe state is done
Functions used for various graphical and other tests
Gameplay speed control. It attempts to mimic/limit progression to the 30 tics per second Doom used.
CLI options for the game-exe