'''
Heartbeat program with parameters
From Mission 6
Solution code with 3 different animations
'''
from codex import *
from time import sleep

delay = 1

# --Function
def heart_beat(pic1, pic2):
    display.show(pic1)
    sleep(delay)
    display.show(pic2)
    sleep(delay)

def adjust_speed():
    global delay
    if buttons.was_pressed(BTN_A):
        delay = delay + 0.2  
    if buttons.was_pressed(BTN_B):
        delay = delay - 0.2
    if delay < 0.2:
        delay = 0.2

# --Main Program
pic1 = pics.HEART
pic2 = pics.HEART_SMALL
while True:
    heart_beat(pic1, pic2)
    adjust_speed()

    if buttons.was_pressed(BTN_L):
        pic1 = pics.HEART
        pic2 = pics.HEART_SMALL

    if buttons.was_pressed(BTN_R):
        pic1 = pics.SURPRISED
        pic2 = pics.ASLEEP

    if buttons.was_pressed(BTN_D):
        pic1 = pics.ARROW_E
        pic2 = pics.ARROW_W

    # Kill Switch
    if buttons.was_pressed(BTN_U):
        break