'''
Mission 10 - Reaction Tester
Extra Spicy solution - 4A Option 
Make the reaction tester into a game by comparing time to 
the average. Play the game 20 times. If the score is at 
least 15, player wins.
   This solution uses the pixels for the indicator, but
students could use color or images as well.
   This solution also includes the functions for 
intro and countdown.
'''
from codex import *
import random
import time

def wait_button():
    while True:
        if buttons.was_pressed(BTN_A):
            break

# -- add intro function
def intro():
    display.print("Reaction Tester")
    display.print("When the pixels")
    display.print("turn GREEN")
    display.print("press BTN A")
    display.print()
    display.print("Press A to start")
    wait_button()
    display.clear()

def countdown():
    # clear screen and countdown
    display.clear()
    pixels.set([BLACK, BLACK, BLACK, BLACK])
    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
loops = 0
END_GAME = 10
WIN_SCORE = 7

intro()
# play the game 10 times
while loops < END_GAME:
    display.print("Press Button A")
    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)
    pixels.set([GREEN, GREEN, GREEN, GREEN])

    # 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 reaction_time <= AVG:
        score = score + 1

    display.print("Reaction Time: ")
    display.print(reaction_time)
    display.print("Score: " + str(score))
    display.print()
    # increment the control variable
    loops = loops + 1

# results of game
display.clear()
display.print("Score: " + str(score))
if score >= WIN_SCORE:  
    display.print("You WIN", scale=3)
else:
    display.print("You lose", scale=3)