May-22-2020, 04:31 PM
Hi Everyone,
Here is my stab at a Tic-Tac-Toe game using tkinter. Player controls "X" and makes moves by using numeric input. My number one goal here was to have an AI that can't be defeated, so please let me know if you find a sequence that wins! The AI was done through brute force by starting out with a few obvious checks and then adding new ones as I found new ways to win a game, so it is somewhat haphazardly cobbled together. I did make one pass through the code to get rid of global variables and consolidate some code into functions, so it is now less of a jumbled mess than it previously was.
Any and all critiques or suggestions are welcome!
Here is my stab at a Tic-Tac-Toe game using tkinter. Player controls "X" and makes moves by using numeric input. My number one goal here was to have an AI that can't be defeated, so please let me know if you find a sequence that wins! The AI was done through brute force by starting out with a few obvious checks and then adding new ones as I found new ways to win a game, so it is somewhat haphazardly cobbled together. I did make one pass through the code to get rid of global variables and consolidate some code into functions, so it is now less of a jumbled mess than it previously was.
Any and all critiques or suggestions are welcome!
import sys
from tkinter import *
from tkinter import font as tkfont
class Gameboard:
def __init__(self):
self.tk = Tk()
self.tk.title("Tic-Tac-Toe")
self.tk.resizable(0, 0)
self.tk.wm_attributes("-topmost", 1)
self.wld = [0] * 3
self.gameover = False
self.gameclose = False
self.gamecanvas = None
self.startgame()
self.tk.mainloop()
def startgame(self):
if self.gameover == True and self.gamecanvas is not None:
self.gamecanvas.destroy()
self.gameover = False
self.board = [0] * 9
self.turncount = 1
self.gamecanvas = Canvas(self.tk, width=400, height=400)
self.gamecanvas.pack()
self.gamecanvas.bind_all('<KeyPress-y>', self.restart)
self.gamecanvas.bind_all('<KeyPress-Y>', self.restart)
self.gamecanvas.bind_all('<KeyPress-n>', self.endgame)
self.gamecanvas.bind_all('<KeyPress-N>', self.endgame)
self.gamecanvas.bind_all('<KeyPress-0>', self.playZero)
self.gamecanvas.bind_all('<KeyPress-1>', self.playOne)
self.gamecanvas.bind_all('<KeyPress-2>', self.playTwo)
self.gamecanvas.bind_all('<KeyPress-3>', self.playThree)
self.gamecanvas.bind_all('<KeyPress-4>', self.playFour)
self.gamecanvas.bind_all('<KeyPress-5>', self.playFive)
self.gamecanvas.bind_all('<KeyPress-6>', self.playSix)
self.gamecanvas.bind_all('<KeyPress-7>', self.playSeven)
self.gamecanvas.bind_all('<KeyPress-8>', self.playEight)
self.gamecanvas.bind_all('<KeyPress-8>', self.playEight)
self.gamecanvas.bind_all('<KeyPress-Return>', self.closegame)
labels = plotBoard(self.board)
showBoard(self.gamecanvas,labels)
def restart(self,evt):
if self.gameover == True:
self.startgame()
def endgame(self,evt):
if self.gameover == True:
self.gamecanvas.delete('all')
smallfont = tkfont.Font(family="Arial", size=15)
self.gamecanvas.create_text(200, 50, font=smallfont, text = 'Thanks for playing!', fill = 'blue')
winstext = ('Wins: ' + str(self.wld[0]))
lossestext = ('Losses: ' + str(self.wld[1]))
drawstext = ('Draws: ' + str(self.wld[2]))
self.gamecanvas.create_text(200, 100, font=smallfont, text = winstext, fill = 'blue')
self.gamecanvas.create_text(200, 150, font=smallfont, text = lossestext, fill = 'blue')
self.gamecanvas.create_text(200, 200, font=smallfont, text = drawstext, fill = 'blue')
self.gamecanvas.create_text(200, 300, font=smallfont, text = 'Hit Enter to leave.', fill = 'blue')
self.gameclose = True
def closegame(self,evt):
if self.gameover == True and self.gameclose == True:
self.tk.destroy()
sys.exit()
def advanceTurn(self):
self.turncount += 1
labels = plotBoard(self.board)
showBoard(self.gamecanvas,labels)
winner = checkWin(self.board,self.turncount,self.wld)
if winner in ['O','X','D']:
winMessage(self.gamecanvas,winner)
self.gameover = True
else:
self.board = aiMove(self.board,self.turncount)
self.turncount += 1
labels = plotBoard(self.board)
showBoard(self.gamecanvas,labels)
winner = checkWin(self.board,self.turncount,self.wld)
if winner in ['O','X','D']:
winMessage(self.gamecanvas,winner)
self.gameover = True
def playZero(self,evt):
if self.board[0] == 0 and self.gameover == False:
self.board[0] = 1
self.advanceTurn()
def playOne(self,evt):
if self.board[1] == 0 and self.gameover == False:
self.board[1] = 1
self.advanceTurn()
def playTwo(self,evt):
if self.board[2] == 0 and self.gameover == False:
self.board[2] = 1
self.advanceTurn()
def playThree(self,evt):
if self.board[3] == 0 and self.gameover == False:
self.board[3] = 1
self.advanceTurn()
def playFour(self,evt):
if self.board[4] == 0 and self.gameover == False:
self.board[4] = 1
self.advanceTurn()
def playFive(self,evt):
if self.board[5] == 0 and self.gameover == False:
self.board[5] = 1
self.advanceTurn()
def playSix(self,evt):
if self.board[6] == 0 and self.gameover == False:
self.board[6] = 1
self.advanceTurn()
def playSeven(self,evt):
if self.board[7] == 0 and self.gameover == False:
self.board[7] = 1
self.advanceTurn()
def playEight(self,evt):
if self.board[8] == 0 and self.gameover == False:
self.board[8] = 1
self.advanceTurn()
def plotBoard(board):
## check values of the board and assign number, X, or O to a list
currentBoard=['']*9
for i in range(0,9):
if board[i] == 0:
currentBoard[i] = str(i)
elif board[i] == 1:
currentBoard[i] = 'X'
elif board[i] == 2:
currentBoard[i] = 'O'
return currentBoard
def showBoard(canvas,board):
## draw the board
canvas.delete('all')
canvas.create_line(150, 50, 150, 350)
canvas.create_line(250, 50, 250, 350)
canvas.create_line(50, 150, 350, 150)
canvas.create_line(50, 250, 350, 250)
canvas.create_text(100, 100, text=board[0], font=('Times', 80))
canvas.create_text(200, 100, text=board[1], font=('Times', 80))
canvas.create_text(300, 100, text=board[2], font=('Times', 80))
canvas.create_text(100, 200, text=board[3], font=('Times', 80))
canvas.create_text(200, 200, text=board[4], font=('Times', 80))
canvas.create_text(300, 200, text=board[5], font=('Times', 80))
canvas.create_text(100, 300, text=board[6], font=('Times', 80))
canvas.create_text(200, 300, text=board[7], font=('Times', 80))
canvas.create_text(300, 300, text=board[8], font=('Times', 80))
def checkWin(board,turncount,wld):
##check for X win
if ((board[0] == board[1] == board[2] == 1) \
or (board[0] == board[4] == board[8] == 1) \
or (board[0] == board[3] == board[6] == 1) \
or (board[3] == board[4] == board[5] == 1) \
or (board[6] == board[4] == board[2] == 1) \
or (board[6] == board[7] == board[8] == 1) \
or (board[1] == board[4] == board[7] == 1) \
or (board[2] == board[5] == board[8] == 1)):
wld[0] += 1
return 'X'
##check for O win
elif ((board[0] == board[1] == board[2] == 2) \
or (board[0] == board[4] == board[8] == 2) \
or (board[0] == board[3] == board[6] == 2) \
or (board[3] == board[4] == board[5] == 2) \
or (board[6] == board[4] == board[2] == 2) \
or (board[6] == board[7] == board[8] == 2) \
or (board[1] == board[4] == board[7] == 2) \
or (board[2] == board[5] == board[8] == 2)):
wld[1] += 1
return 'O'
##check for draw
elif turncount == 10:
wld[2] += 1
return 'D'
else:
return None
def aiMove(board,turncount):
## on second turn, take middle square if open, or top left corner if X took middle
if turncount == 2:
if board[4] == 0:
board[4] = 2
else:
board[0] = 2
## on any turn beyond second, check if O can win, then check if X can win
## and make the appropriate move to win or block
elif (board[3] == board[6] == 2 and board[0] == 0)\
or (board[1] == board[2] == 2 and board[0] == 0)\
or (board[4] == board[8] == 2 and board[0] == 0):
board[0] = 2
elif (board[0] == board[2] == 2 and board[1] == 0)\
or (board[4] == board[7] == 2 and board[1] == 0):
board[1] = 2
elif (board[0] == board[1] == 2 and board[2] == 0)\
or (board[6] == board[4] == 2 and board[2] == 0)\
or (board[5] == board[8] == 2 and board[2] == 0):
board[2] = 2
elif (board[0] == board[6] == 2 and board[3] == 0)\
or (board[4] == board[5] == 2 and board[3] == 0):
board[3] = 2
elif (board[0] == board[8] == 2 and board[4] == 0)\
or (board[3] == board[5] == 2 and board[4] == 0)\
or (board[6] == board[2] == 2 and board[4] == 0)\
or (board[1] == board[7] == 2 and board[4] == 0):
board[4] = 2
elif (board[3] == board[4] == 2 and board[5] == 0)\
or (board[2] == board[8] == 2 and board[5] == 0):
board[5] = 2
elif (board[0] == board[3] == 2 and board[6] == 0)\
or (board[4] == board[2] == 2 and board[6] == 0)\
or (board[7] == board[8] == 2 and board[6] == 0):
board[6] = 2
elif (board[1] == board[4] == 2 and board[7] == 0)\
or (board[6] == board[8] == 2 and board[7] == 0):
board[7] = 2
elif (board[0] == board[4] == 2 and board[8] == 0)\
or (board[6] == board[7] == 2 and board[8] == 0)\
or (board[2] == board[5] == 2 and board[8] == 0):
board[8] = 2
elif (board[3] == board[6] == 1 and board[0] == 0)\
or (board[1] == board[2] == 1 and board[0] == 0)\
or (board[4] == board[8] == 1 and board[0] == 0):
board[0] = 2
elif (board[0] == board[2] == 1 and board[1] == 0)\
or (board[4] == board[7] == 1 and board[1] == 0):
board[1] = 2
elif (board[0] == board[1] == 1 and board[2] == 0)\
or (board[6] == board[4] == 1 and board[2] == 0)\
or (board[5] == board[8] == 1 and board[2] == 0):
board[2] = 2
elif (board[0] == board[6] == 1 and board[3] == 0)\
or (board[4] == board[5] == 1 and board[3] == 0):
board[3] = 2
elif (board[0] == board[8] == 1 and board[4] == 0)\
or (board[3] == board[5] == 1 and board[4] == 0)\
or (board[6] == board[2] == 1 and board[4] == 0)\
or (board[1] == board[7] == 1 and board[4] == 0):
board[4] = 2
elif (board[3] == board[4] == 1 and board[5] == 0)\
or (board[2] == board[8] == 1 and board[5] == 0):
board[5] = 2
elif (board[0] == board[3] == 1 and board[6] == 0)\
or (board[4] == board[2] == 1 and board[6] == 0)\
or (board[7] == board[8] == 1 and board[6] == 0):
board[6] = 2
elif (board[1] == board[4] == 1 and board[7] == 0)\
or (board[6] == board[8] == 1 and board[7] == 0):
board[7] = 2
elif (board[0] == board[4] == 1 and board[8] == 0)\
or (board[6] == board[7] == 1 and board[8] == 0)\
or (board[2] == board[5] == 1 and board[8] == 0):
board[8] = 2
## If we get to this point, it is at least the 4th turn and there
## is no win possible for either player, so we start checking for
## more specific scenarios
## If it's the 4th turn and X went in the center first,
## then O is in top left and any move by X other than
## bottom right should have already been countered
## thanks to win condition checks
elif (board[4] == board[8] == 1 and turncount == 4 and board[6] == 0):
board[6] = 2
## check if 7 and 5 are occupied and 8 is open (any other scenario
## of two side squares occupied by X is already countered)
elif (board[7] == board[5] == 1 and board[8] == 0):
board[8] = 2
## check for circumstance where X played a corner followed by non-adjacent
## side square, and take the opposite corner
elif (board[2] == 1 and (board[7] == 1 or board[3] == 1) and board[6] == 0):
board[6] = 2
elif (board[0] == 1 and (board[7] == 1 or board[5] == 1) and board[8] == 0):
board[8] = 2
## check for circumstance where X occupies opposite corners and
## play a side to prevent any win opportunities
elif (board[0] == 1 and board[8] == 1 and board[7] == 0):
board[7] = 2
elif (board[2] == 1 and board[6] == 1 and board[5] == 0):
board[5] = 2
## if we get to this point, just take the first open square we can find
else:
move = 0
for i in range(0,9):
if board[i] == 0:
move = i
break
board[move] = 2
return board
def winMessage(canvas,winner):
fatfont = tkfont.Font(family="Arial", size=75, weight="bold")
slimfont = tkfont.Font(family="Arial", size=45)
smallfont = tkfont.Font(family="Arial", size=15)
if winner == 'X':
canvas.create_text(200, 100, font=fatfont, text = 'YOU', fill = 'red')
canvas.create_text(200, 175, font=fatfont, text = 'WON!', fill = 'red')
canvas.create_text(200, 270, font=slimfont, text = 'IMPOSSIBLE!', fill = 'red')
canvas.create_text(200, 360, font=smallfont, text = 'Enter Y to play again or N to quit.', fill = 'black')
elif winner == 'O':
canvas.create_text(200, 35, font=slimfont, text = 'O WINS!', fill = 'blue')
canvas.create_text(200, 160, font=slimfont, text = 'GAME', fill = 'blue')
canvas.create_text(200, 240, font=slimfont, text = 'OVER', fill = 'blue')
canvas.create_text(200, 360, font=smallfont, text = 'Enter Y to play again or N to quit.', fill = 'black')
elif winner == 'D':
canvas.create_text(200, 35, font=slimfont, text = 'DRAW', fill = 'blue')
canvas.create_text(200, 160, font=slimfont, text = 'GAME', fill = 'blue')
canvas.create_text(200, 240, font=slimfont, text = 'OVER', fill = 'blue')
canvas.create_text(200, 360, font=smallfont, text = 'Enter Y to play again or N to quit.', fill = 'black')
Gameboard()