GitLab

    fn run(&mut self, update: Rc<Cell<bool>>, running: Rc<Cell<bool>>) {
        loop {
            if !running.get() {
                break;
            }

            if let Some(world) = &mut self.world {
                world.run();
            }

            update.set(false);

            self.backend.borrow_mut().drain_events();
        }
    }

Is it possible to call world.run() on demand? Or at least implement some frame rate limit.