'''
Mission 10 - Reaction Time
'''
from codex import *
import random
import time


def wait_button():
    display.print("Press Button A")
    while True:
        if buttons.was_pressed(BTN_A):
            break


# MAIN PROGRAM 
while True:
    wait_button()


    pixels.set([BLACK, BLACK, BLACK, BLACK])
    display.clear()
    display.print(3, scale=6)
    display.print(2, scale=6)
    display.print(1, scale=6)
    display.clear()


    delay = random.randrange(1000, 5000)
    delay_time = delay / 1000
    time.sleep(delay_time)
    buttons.was_pressed(BTN_A) #resets early press
    pixels.set([GREEN, GREEN, GREEN, GREEN])
    
    start_time = time.ticks_ms()
    wait_button()
    end_time = time.ticks_ms()
    elapsed = time.ticks_diff(end_time, start_time)
    display.print("Reaction Time")
    display.print(elapsed)
    display.print("milliseconds")
    time.sleep(3)