define chapter_tuple_1 = [
    ("1", "chapter_1"),
    ("2", "chapter_2"),
    ("3", "chapter_3"),
    ("4", "chapter_4"),
    ("5", "chapter_5"),
    ("6", "chapter_6")
]

define chapter_tuple_2 = [
    ("7", "chapter_7"),
    ("8", "chapter_8"),
    ("9", "chapter_9"),
    ("10", "chapter_10"),
    ("11", "chapter_11")
]

define tuples_index = [
    ("1-6", chapter_tuple_1),
    ("7-11", chapter_tuple_2)
]

default selected_tuple = None


init python:

    def select_chapter():
        global selected_tuple, current_chapter

        selected_tuple = renpy.display_menu(tuples_index)
        current_chapter = renpy.display_menu(selected_tuple)

        set_stats()


    def set_stats():
        global chapter_list_length, chapter_list_index, ending_route_number, is_end_reached

        chapter_list_length = len(chapter_list) - 1

        find_chapter_in_array()

        renpy.call(current_chapter)


    def find_chapter_in_array():
        global chapter_list_index, current_chapter

        try:
            chapter_list_index = chapter_list.index(current_chapter)
        except ValueError:
            chapter_list_index = -1
            current_chapter = ""

        


label chapter_select:
    scene black
    stop sound
    stop music

    menu:
        "Initialize scores:"

        "Ending 1":
            $ anon_score = 0
            $ fang_score = 0
        "Ending 2":
            $ anon_score = 0
            $ fang_score = 4
        "Ending 3":
            $ anon_score = 4
            $ fang_score = 0
        "Ending 4":
            $ anon_score = 4
            $ fang_score = 4
    
    $ lock_scores = True
    call initstats(anon_score, fang_score) from _call_initstats_2
        
    $ select_chapter()