'''
Mission 10 - Reaction Tester
Spicy solution - 3B
Make the reaction tester into a game by using two images.
Award a point if the correct button is pressed, depending
on what image is displayed.
   As an extra challenge, end when they player misses.
   This solution uses a list of two images. It can be
done with two variables as well.
   This solution also includes the functions for 
intro and countdown.
'''
from codex import *
import random
import time

my_images = [pics.TIARA, pics.HOUSE]

def wait_button():
    while True:
        global button
        if buttons.was_pressed(BTN_A):
            button = "A"
            break
        elif buttons.was_pressed(BTN_B):
            button = "B"
            break

# -- add intro function
def intro():
    display.print("Reaction Tester")
    display.print("TIARA = A")
    display.print("HOUSE = B")
    display.print()
    display.print("Press A to start")
    wait_button()
    display.clear()

def countdown():
    # clear screen and countdown
    display.clear()
    display.print("3", scale=6)
    time.sleep(1)
    display.print("2", scale=6)
    time.sleep(1)
    display.print("1", scale=6)
    time.sleep(1)
    display.clear()

# -- call intro
AVG = 200  # average of reaction times (can vary)
score = 0

intro()
while True:
    display.print("Press Button A or B")
    wait_button()

    countdown()

    # get random delay time
    ms = random.randrange(1000, 5000)
    delay_time = ms / 1000
    time.sleep(delay_time)

    # turn pixels GREEN
    buttons.was_pressed(BTN_A)
    buttons.was_pressed(BTN_B)
    image = random.choice(my_images)
    display.show(image)

    # get start and end time
    start_time = time.ticks_ms()
    wait_button()
    end_time = time.ticks_ms()

    reaction_time = time.ticks_diff(end_time, start_time)
    if image == pics.TIARA and button == "A":
        score = score + 1
    elif image == pics.HOUSE and button == "B":
        score = score + 1
    else:
        break

    display.print("Reaction Time: ")
    display.print(reaction_time)
    display.print("Score: " + str(score))
    display.print()


# -- ending message
display.clear()
display.print("Final Score")
display.print(score)