engine

This is the main class of fresa. Handles initialization, update and cleaning, calling all required systems.

run

void fresa::run()

This is the main entrypoint of the engine. First it perform the tests defined in the configuration file (if enabled with FRESA_ENABLE_TESTS). Then calls init, which handles system initialization.

Finally it calls the main update loop of the application. The simulation update is decoupled from the frame time, instead being increased in discrete steps of dt. This allows the engine to run independent of frame rate. The implementation is very similar to the one described in the fix your timestep article. It also includes a sleep function to avoid using 100% of the CPU if not necessary. It will limit the simulation checks to the value defined in the configuration file.

quit and force_quit

void fresa::quit()
void fresa::force_quit()

Can be called when the engine needs to exit early. This will call stop and then exit the application. There are two variants: the regular quit first completes the current frame of the update loop, and then exists, while force_quit runs stop and exits immediately.