How do I return a boolean instead of locking up the process?

no-reply@allegro.cc (Shadowblitz16) — Sat, 12 Jun 2021 20:49:19 +0000

how do I return true here?

#SelectExpand
  1bool window_is_running()
  2{
  3    if (!window_initalized) return false;
  4
  5    bool redraw = true;
  6    ALLEGRO_EVENT event;
  7
  8    al_start_timer(window_timer);
  9    while(1)
 10    {
 11        //need to return true here instead of locking up
 12        al_wait_for_event(window_queue, &event);
 13
 14        if(event.type == ALLEGRO_EVENT_TIMER)
 15            redraw = true;
 16
 17        else if((event.type == ALLEGRO_EVENT_KEY_DOWN) || (event.type == ALLEGRO_EVENT_DISPLAY_CLOSE))
 18            break;
 19    }
 20
 21}

I wanted to make it so I can do..

#SelectExpand
 2window_init(256,240,60,"my title");
 3while(window_is_running())
 4{
 5    //code here
 6}

no-reply@allegro.cc (Peter Hull) — Sat, 12 Jun 2021 22:10:50 +0000

Can you not

#SelectExpand
  1window_init(256,240,60,"my title");
  2bool window_is_running = true;
  3al_start_timer(window_timer);
  4while(window_is_running)
  5{
  6    
  7    bool redraw = true;
  8    ALLEGRO_EVENT event;
  9  
 10    al_wait_for_event(window_queue, &event);
 11
 12    if(event.type == ALLEGRO_EVENT_TIMER)
 13       redraw = true;
 14    else if((event.type == ALLEGRO_EVENT_KEY_DOWN) || (event.type == ALLEGRO_EVENT_DISPLAY_CLOSE))
 15       window_is_running = false;
 16    //code here
 17}

no-reply@allegro.cc (Shadowblitz16) — Tue, 15 Jun 2021 08:53:39 +0000

why? its easy to read

no-reply@allegro.cc (SiegeLord) — Tue, 15 Jun 2021 12:27:01 +0000

bool window_is_running_var = true;

bool window_is_running()
{
    if (!window_initalized) return false;
    ALLEGRO_EVENT event;
    al_wait_for_event(window_queue, &event);
    if((event.type == ALLEGRO_EVENT_KEY_DOWN) || (event.type == ALLEGRO_EVENT_DISPLAY_CLOSE))
        window_is_running_var = false;
    return window_is_running_var;
}

no-reply@allegro.cc (Edgar Reynaldo) — Tue, 15 Jun 2021 23:26:09 +0000

al_wait_for_event blocks until it gets an event. If you don't want to do that, use one of its cousins, al_get_next_event or al_wait_for_event_until.

You could also run your window in a thread and send an event to your main loop when the window closes. The window is running until you get the close event.