if (up_p())
    choice_index = ((choice_index - 1) < 0) ? (array_length_1d(choice) - 1) : (choice_index - 1);
if (down_p())
    choice_index = ((choice_index + 1) > (array_length_1d(choice) - 1)) ? 0 : (choice_index + 1);
if (button1_p())
{
    if (choice_index == 0)
    {
        var menu_go = 0;
        var roomchoice = room_intro_ch2;
        var CH = string(global.chapter);
        if (ossafe_file_exists("filech" + CH + "_0"))
            menu_go = 1;
        if (ossafe_file_exists("filech" + CH + "_1"))
            menu_go = 1;
        if (ossafe_file_exists("filech" + CH + "_2"))
            menu_go = 1;
        if (ossafe_file_exists("filech" + CH + "_3"))
            menu_go = 1;
        if (ossafe_file_exists("dr.ini"))
            menu_go = 1;
        if (ossafe_file_exists("filech" + CH + "_3"))
            menu_go = 2;
        if (ossafe_file_exists("filech" + CH + "_4"))
            menu_go = 2;
        if (ossafe_file_exists("filech" + CH + "_5"))
            menu_go = 2;
        if (menu_go == 0 || menu_go == 1)
            roomchoice = room_intro_ch2;
        if (menu_go == 2)
        {
            scr_windowcaption("DELTARUNE");
            global.tempflag[10] = 1;
            roomchoice = room_legend;
            global.plot = 0;
        }
        global.darkzone = 0;
        room_goto(roomchoice);
    }
    else if (choice_index == 1)
    {
        room_goto_next();
    }
    else if (choice_index == 2)
    {
        scr_load();
    }
    else if (choice_index == 3)
    {
        if (ossafe_file_exists("filech1_3"))
        {
            global.filechoice = 3;
            scr_load_chapter1();
            global.filechoice = 0;
            global.darkzone = 0;
            room_goto(room_krisroom);
        }
        else
        {
            snd_play(snd_error);
        }
    }
}