game.py

# Tic Tac Toe
import random
import Ai
import time
def drawBoard(board):
    # This function prints out the board that it was passed.
    # "board" is a list of 10 strings representing the board (ignore index 0)
    print('   |   |')
    print(' ' + board[7] + ' | ' + board[8] + ' | ' + board[9])
    print('   |   |')
    print('-----------')
    print('   |   |')
    print(' ' + board[4] + ' | ' + board[5] + ' | ' + board[6])
    print('   |   |')
    print('-----------')
    print('   |   |')
    print(' ' + board[1] + ' | ' + board[2] + ' | ' + board[3])
    print('   |   |')
def inputPlayerLetter():
    # Lets the player type which letter they want to be.
    # Returns a list with the player’s letter as the first item, and the computer's letter as the second.
    letter = ''
    while not (letter == 'X' or letter == 'O'):
        print('Do you want to be X or O?')
        letter = input().upper()
    # the first element in the list is the player’s letter, the second is the computer's letter.
    if letter == 'X':
        return ['X', 'O']
    else:
        return ['O', 'X']
def whoGoesFirst():
    # Randomly choose the player who goes first.
    if random.randint(0, 1) == 0:
        return 'computer'
    else:
        return 'player'
def playAgain():
    # This function returns True if the player wants to play again, otherwise it returns False.
    print('Do you want to play again? (yes or no)')
    return input().lower().startswith('y')
def makeMove(board, letter, move):
    board[move] = letter

def isWinner(bo, le):
    # Given a board and a player’s letter, this function returns True if that player has won.
    # We use bo instead of board and le instead of letter so we don’t have to type as much.
    return ((bo[7] == le and bo[8] == le and bo[9] == le) or # across the top
    (bo[4] == le and bo[5] == le and bo[6] == le) or # across the middle
    (bo[1] == le and bo[2] == le and bo[3] == le) or # across the bottom
    (bo[7] == le and bo[4] == le and bo[1] == le) or # down the left side
    (bo[8] == le and bo[5] == le and bo[2] == le) or # down the middle
    (bo[9] == le and bo[6] == le and bo[3] == le) or # down the right side
    (bo[7] == le and bo[5] == le and bo[3] == le) or # diagonal
    (bo[9] == le and bo[5] == le and bo[1] == le)) # diagonal
def getBoardCopy(board):
    # Make a duplicate of the board list and return it the duplicate.
    dupeBoard = []
    for i in board:
        dupeBoard.append(i)
    return dupeBoard
def isSpaceFree(board, move):
    # Return true if the passed move is free on the passed board.
    return board[move] == ' '
def getPlayerMove(board):
    # Let the player type in their move.
    move = ' '
    while move not in '1 2 3 4 5 6 7 8 9'.split() or not isSpaceFree(board, int(move)):
        print('What is your next move? (1-9)')
        move = input()
    return int(move)


def isBoardFull(board):
    # Return True if every space on the board has been taken. Otherwise return False.
    for i in range(1, 10):
        if isSpaceFree(board, i):
            return False
    return True


print('Welcome to Tic Tac Toe!')
time.sleep(2)

ai =Ai.Ai()

while True:
    # Reset the board
    theBoard = [' '] * 10
    playerLetter='X'
    computerLetter='O'
    turn = whoGoesFirst()
    print('The ' + turn + ' will go first.')
    gameIsPlaying = True
    while gameIsPlaying:
        if turn == 'player':
            # Player’s turn.
            time.sleep(1)
            move = getPlayerMove(theBoard)

            makeMove(theBoard, playerLetter, move)
            print('You moved.')
            drawBoard(theBoard)

            ai.learn(theBoard)

            if isWinner(theBoard, playerLetter):
                print('Hooray! You have won the game!')
                ai.reward(-99)
                gameIsPlaying = False
            else:
                if isBoardFull(theBoard):
                    print('The game is a tie!')
                    break
                else:
                    turn = 'computer'
        else:
            # Computer’s turn.

            move=ai.move(theBoard)

            makeMove(theBoard, computerLetter, move)
            time.sleep(1)
            print('The computer moved.')
            drawBoard(theBoard)
            if isWinner(theBoard, computerLetter):
                print('The computer has beaten you! You lose.')
                ai.reward(100)
                gameIsPlaying = False
            else:
                if isBoardFull(theBoard):
                    print('The game is a tie!')
                    break
                else:
                    turn = 'player'
    if not playAgain():
        ai.save()
        break