'''
Mission 7 - Personal Billboard
This project creates a list with three different
data types - tuple (color), string and CodeX image
It uses a constant for the last index and two buttons
for scrolling through the list.
'''

from codex import *

choice = 0
my_list = [GREEN,
            "Ahoy", 
            pics.HAPPY, 
            pics.SAD, 
            RED,
            pics.SURPRISED,
            "Having a great day", 
            pics.ASLEEP, 
            PINK,
            pics.TIARA,
            "Meh", 
            pics.TARGET]
LAST_INDEX = len(my_list) - 1

while True:
    my_image = my_list[choice]
    if type(my_image) == tuple:
        display.fill(my_image)
    else:
        display.show(my_image)

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

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