'''
Mission 12 - Night Light
With a function
'''


from codex import *
ROOM = 1000
MAX_PERCENT = 20


def nightlight():
    reverse = 1 - value
    scaled = (reverse/ROOM) * MAX_PERCENT
    level = int(scaled)
    pixels.fill(WHITE, brightness = level)


while True:
    value = light.read()


    if value < ROOM:
        nightlight()
    else:
        pixels.fill(BLACK)


    # I added this in so I don't get blinded
    # by contiual light when stopped
    if buttons.was_pressed(BTN_A):
        break
    


pixels.fill(BLACK)