unsigned int elapsed = (unsigned int) (clock() / (CLOCKS_PER_SEC / 1000)) - timer->begin;

    if (elapsed == timer->elapsed + 1000)
    {
        timer->elapsed = elapsed;

        fprintf(debuglog, "[1000] timer->elapsed: %u\n", timer->elapsed);
        fflush(debuglog);

        loop_timer(list_win->win_game, timer);
        loop_obstacles(list_win->win_game, list_bu, list_ob, pl);
    }

    if (elapsed == timer->elapsed + 500)
    {
        timer->elapsed = elapsed;

        fprintf(debuglog, "[500] timer->elapsed: %u\n", timer->elapsed);
        fflush(debuglog);

        loop_bullets(list_win->win_game, list_bu, list_ob, pl);
    }