from turtle import *

from freegames import line

def grid():

"Draw tic-tac-toe grid."

line(-67, 200, -67, -200)

line(67, 200, 67, -200)

line(-200, -67, 200, -67)

line(-200, 67, 200, 67)

def drawx(x, y):

"Draw X player."

line(x, y, x + 133, y + 133)

line(x, y + 133, x + 133, y)

def drawo(x, y):

"Draw O player."

up()

goto(x + 67, y + 5)

down()

circle(62)

def floor(value):

"Round value down to grid with square size 133."

return ((value + 200) // 133) * 133 - 200

state = {'player': 0}

players = [drawx, drawo]

def tap(x, y):

"Draw X or O in tapped square."

x = floor(x)

y = floor(y)

player = state['player']

draw = players[player]

draw(x, y)

update()

state['player'] = not player

setup(420, 420, 370, 0)

hideturtle()

tracer(False)

grid()

update()

onscreenclick(tap)

done()