'''
Mission 7 -- Billboard
Final -- with challenge
'''
from codex import *

my_list = ["Ahoy", GREEN, pics.HAPPY, "Happy", pics.SAD, RED, 
          pics.SURPRISED, (77, 158, 100), pics.ASLEEP, BLUE, 
          "Smile!", pics.HEART, (203, 182, 6), pics.TIARA, 
          pics.TSHIRT]
choice = 0
LAST_INDEX = len(my_list) - 1

# ==== Functions
def display_item(choice):
    my_image = my_list[choice]

    if type(my_image) == tuple:
        display.fill(my_image)
    else:
        display.show(my_image)

def change_choice():
    global choice
    if buttons.was_pressed(BTN_R):
        choice = choice + 1
        if choice > LAST_INDEX:
            choice = 0

    if buttons.was_pressed(BTN_L):
        choice = choice - 1
        if choice < 0:
            choice = LAST_INDEX

def intro():
    display.print("Welcome to ")
    display.print("BILLBOARD")
    display.print()
    display.print("Use BTN_R to scroll")
    display.print("to the right.")
    display.print()
    display.print("use BTN_L to scroll")
    display.print("to the left.")
    display.print()
    display.print("BTN_B to continue")
    while True:
        if buttons.was_pressed(BTN_B):
            break

# ==== Main Program
intro()
while True:
    display_item(choice)
    change_choice()

    if buttons.was_pressed(BTN_A):
        break

# --- end
display.fill(BLACK)