xo

from tkinter import *
from tkinter import messagebox
import random


root = Tk()
root.title("tic-tac-toe")
root.geometry('340x400')
field = []
gamerun = True
numturn = 0
level = 1

def level_1():
    global level
    level = 1
    newgame()

def level_2():
    global level
    level = 2
    newgame()

def newgame():
    for row in range(3):
        for col in range(3):
            field[row][col]['text'] = ''
            field[row][col]['background'] = 'lightblue'
    global gamerun
    gamerun = True
    global numturn
    numturn = 0


def click(row, col):
    if gamerun and field[row][col]['text'] == '':
        field[row][col]['text'] = 'X'
        global numturn
        numturn += 1
        checkwin('X')
    if numturn != 9 and gamerun:
        if level == 1:
            computer_move_1()
        if level == 2:
            computer_move_2()
        checkwin('0')
    if numturn == 9 and gamerun:
        messagebox.showinfo('Game over', 'Draw')


def checkwin(smb):
    checkline(field[0][0], field[0][1], field[0][2], smb)
    checkline(field[1][0], field[1][1], field[1][2], smb)
    checkline(field[2][0], field[2][1], field[2][2], smb)
    checkline(field[0][0], field[1][0], field[2][0], smb)
    checkline(field[0][1], field[1][1], field[2][1], smb)
    checkline(field[0][2], field[1][2], field[2][2], smb)
    checkline(field[0][0], field[1][1], field[2][2], smb)
    checkline(field[0][2], field[1][1], field[2][0], smb)



def checkline(b1, b2, b3, smb):
    if b1['text'] == smb and b2['text'] == smb and b3['text'] == smb:
        b1['background'] = b2['background'] = b3['background'] = 'pink'
        global gamerun
        gamerun = False
        if smb == 'X':
            messagebox.showinfo('Game over', 'X wins!')
        else:
            messagebox.showinfo('Game over', '0 wins!')


def computer_move_1():
    global numturn
    turn = random.randint(1, 9 - numturn)
    numempty = 0
    for row in range(3):
        for col in range(3):
            if field[row][col]['text'] == '':
                numempty += 1
                if numempty == turn:
                    field[row][col]['text'] = '0'
                    numturn += 1
                    checkwin('0')
                    break
        if numempty == turn:
            break

def computer_move_2():
    checktwozeros('0')
    if gamerun:
        computer_move_1()

def checktwozeros(smb):
    checkline2(field[0][0], field[0][1], field[0][2], smb)
    checkline2(field[1][0], field[1][1], field[1][2], smb)
    checkline2(field[2][0], field[2][1], field[2][2], smb)
    checkline2(field[0][0], field[1][0], field[2][0], smb)
    checkline2(field[0][1], field[1][1], field[2][1], smb)
    checkline2(field[0][2], field[1][2], field[2][2], smb)
    checkline2(field[0][0], field[1][1], field[2][2], smb)
    checkline2(field[0][2], field[1][1], field[2][0], smb)

def checkline2(b1, b2, b3, smb):
    if (b1['text'] == smb and b2['text'] == smb and b3['text'] == '') or (b1['text'] == smb and b2['text'] == '' and b3['text'] == smb) or (b1['text'] == '' and b2['text'] == smb and b3['text'] == smb):
        b1['text'] = b2['text'] = b3['text'] = smb
        b1['background'] = b2['background'] = b3['background'] = 'pink'
        global gamerun
        gamerun = False
        if smb == 'X':
            messagebox.showinfo('Game over', 'X wins!')
        else:
            messagebox.showinfo('Game over', '0 wins!')

for row in range(3):
    line = []
    for col in range(3):
        button = Button(root, text = '', width = 15, heigh = 7, background = 'lightblue', command = lambda row = row, col = col: click(row, col))
        button.grid(row = row, column = col, sticky = 'nsew')
        line.append(button)
    field.append(line)


level_easy_button = Button(root, text = 'Level Easy', command = level_1)
level_easy_button.grid(row = 4, column = 0, columnspan = 3, sticky = 'nsew')
level_med_button = Button(root, text = 'Level Medium', command = level_2)
level_med_button.grid(row = 5, column = 0, columnspan = 3, sticky = 'nsew')
#level_easy_button = Button(root, text = 'Level Easy', command = level_3)
#level_easy_button.grid(row = 4, column = 0, columnspan = 3, sticky = 'nsew')
root.mainloop()