Week 20 Tic-tac-toe v1.0

Post date: Apr 12, 2017 2:46:13 PM

import random

def drawBoard(board):

print(" | | ")

print(" ",board[0],"|",board[1],"|",board[2])

print(" | | ")

print("-------------")

print(" | | ")

print(" ",board[3],"|",board[4],"|",board[5])

print(" | | ")

print("-------------")

print(" | | ")

print(" ",board[6],"|",board[7],"|",board[8])

print(" | | ")

def win(board, player):

if board[0] == player and board[1] == player and board[2] == player:

return True

if board[3] == player and board[4] == player and board[5] == player:

return True

if board[6] == player and board[7] == player and board[8] == player:

return True

if board[0] == player and board[3] == player and board[6] == player:

return True

if board[1] == player and board[4] == player and board[7] == player:

return True

if board[2] == player and board[5] == player and board[8] == player:

return True

if board[0] == player and board[4] == player and board[8] == player:

return True

if board[2] == player and board[4] == player and board[6] == player:

return True

return False

############## Get computer mark ############

def opponent(sUser):

if sUser == "O":

return "X"

return "O"

############## Strategy to move random ############

def randommove(board, sUser):

emptystep = []

for x in range(0,9):

if board[x] == " ":

emptystep.append(x)

move = random.randint(0,len(emptystep)-1)

move = emptystep[move]

return move

############## Strategy to win or block ############

def nextMoveWin(board, sUser):

for x in range(0,9):

if board[x] == " ":

board[x] = sUser

isWin = win(board, sUser)

board[x] = " "

if isWin:

return x

return -1

############## Move center ##################

def moveCenter(board):

if board[4] == " ":

return 4

return -1

############## Move Corner ##################

def moveCorner(board):

if board[1] == " " and board[3] == " " and board[0] == " ":

return 0

if board[1] == " " and board[5] == " " and board[2] == " ":

return 2

if board[5] == " " and board[7] == " " and board[8] == " ":

return 8

if board[3] == " " and board[7] == " " and board[6] == " ":

return 6

if board[0] == " ":

return 0

if board[2] == " ":

return 2

if board[6] == " ":

return 6

if board[8] == " ":

return 8

return -1

############## Check for tie ##################

def checktie(board):

isTie = True

for x in range(0,9):

if board[x] == " ":

isTie = False

return isTie

flip = random.randint(0,1)

if flip == 0:

else:

coin = "Tail"

if bet == coin:

return True

return False

############## User move ##################

def usermove(board, user):

move = input("Make your move (1~9):")

if board[int(move) - 1] != " ":

else:

board[int(move) - 1] = user

drawBoard(board)

if win(board, user):

print("The user ", user, "won!!!")

return True

if checktie(board):

print("It is a tie")

return True

return False

############## 2 ways block ##################

def twowaysblock(steps, board, user):

empty = 0

x = 0

o = 0

for i in steps:

if board[i] == ' ': empty += 1

if board[i] == 'X': x += 1

if board[i] == 'O': o += 1

if user == 'X' and empty == 3 and x == 2:

for i in steps:

if board[i] == ' ':

return i

if user == 'O' and empty == 3 and o == 2:

for i in steps:

if board[i] == ' ':

return i

return -1

############## Scanning for 2 ways ############

def scan2ways(board, user):

steps = [0,2,8,1,5]

move = twowaysblock(steps, board, user)

if move != -1: return move

steps = [2,8,6,5,7]

move = twowaysblock(steps, board, user)

if move != -1: return move

steps = [8,6,0,7,3]

move = twowaysblock(steps, board, user)

if move != -1: return move

steps = [6,0,2,3,1]

move = twowaysblock(steps, board, user)

if move != -1: return move

return -1

############## Computer move ##################

def computermove(board, user):

movetype = ""

move = nextMoveWin(board, opponent(user))

if move == -1:

move = nextMoveWin(board, user)

else:

if movetype == "": movetype = "Computer moves to win!"

if move == -1:

move = scan2ways(board, user)

else:

if movetype == "": movetype = "Computer moves to win!"

if move == -1:

move = moveCenter(board)

else:

if movetype == "": movetype = "Computer blocks your win!"

if move == -1:

move = moveCorner(board)

else:

if movetype == "": movetype = "Computer moves center!"

if move == -1:

move = randommove(board,opponent(user))

else:

if movetype == "": movetype = "Computer moves corner!"

if movetype == "": movetype = "Computer moves random!"

print(movetype)

board[move] = opponent(user)

print("Computer moves", move + 1)

drawBoard(board)

if win(board, opponent(user)):

print("The computer", opponent(user), "won!!!")

return True

if checktie(board):

print("It is a tie!")

return True

return False

################## Main Program ##################

tttBoard = [" "] * 9

drawBoard(tttBoard)

# print("You won, you will be X")

user = "X"

#else:

# print("You lost, you will be O")

# user = "O"

#print("The computer is", opponent(user))

while(True):

if user == "X":

if usermove(tttBoard, user):break

if computermove(tttBoard, user): break

else:

if computermove(tttBoard, user):break

if usermove(tttBoard, user):break