Simon Says

A game of watching and recalling patterns.

"""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()