"""Simon Says

Exercises

1. Speed up tile flash rate.

2. Add more tiles.

"""

from random import choice

from time import sleep

from turtle import *

from freegames import floor, square, vector

pattern = []

guesses = []

tiles = {

vector(0, 0): ('red', 'dark red'),

vector(0, -200): ('blue', 'dark blue'),

vector(-200, 0): ('green', 'dark green'),

vector(-200, -200): ('yellow', 'khaki'),

}

def grid():

"Draw grid of tiles."

square(0, 0, 200, 'dark red')

square(0, -200, 200, 'dark blue')

square(-200, 0, 200, 'dark green')

square(-200, -200, 200, 'khaki')

update()

def flash(tile):

"Flash tile in grid."

glow, dark = tiles[tile]

square(tile.x, tile.y, 200, glow)

update()

sleep(0.5)

square(tile.x, tile.y, 200, dark)

update()

sleep(0.5)

def grow():

"Grow pattern and flash tiles."

tile = choice(list(tiles))

pattern.append(tile)

for tile in pattern:

flash(tile)

print('Pattern length:', len(pattern))

guesses.clear()

def tap(x, y):

"Respond to screen tap."

onscreenclick(None)

x = floor(x, 200)

y = floor(y, 200)

tile = vector(x, y)

index = len(guesses)

if tile != pattern[index]:

exit()

guesses.append(tile)

flash(tile)

if len(guesses) == len(pattern):

grow()

onscreenclick(tap)

def start(x, y):

"Start game."

grow()

onscreenclick(tap)

setup(420, 420, 370, 0)

hideturtle()

tracer(False)

grid()

onscreenclick(start)

done()