board.py

# Bunaren TicTacToe Board
# Created by Fransiscus Emmanuel Bunaren

# This file is for the TicTacToe Board


class Board:
    def __init__(self):
        self.symbol2value = lambda x: 1 if x == "X" else (
            -1 if x == "O" else 0)
        self.board = list(" " * 9)
        self.turn = "X"

    def setBoard(self, inputs):
        if type(inputs) != list:
            inputs = list(inputs)
        self.board = inputs
        return self.board

    # For printing the current state of board
    def print(self, show_turn=False):
        print("  " + str(['1',
                          '2',
                          '3']).replace("[",
                                        " ").replace("]",
                                                     " ").replace("'",
                                                                  "").replace(",",
                                                                              " "))
        print(1, str([self.board[0], self.board[1], self.board[2]]).replace(
            "'", "").replace(",", "|"))
        print(2, str([self.board[3], self.board[4], self.board[5]]).replace(
            "'", "").replace(",", "|"))
        print(3, str([self.board[6], self.board[7], self.board[8]]).replace(
            "'", "").replace(",", "|"))
        if show_turn:
            print("\n" + self.turn, "turns")

    def getTurn(self):
        return self.turn

    def changeTurn(self):
        if self.turn == "X":
            self.turn = "O"
        else:
            self.turn = "X"

    def isOver(self):
        # Checking Rows
        for i in [[0, 1, 2], [3, 4, 5], [6, 7, 8]]:
            is_over = abs(sum([self.symbol2value(self.board[k]) for k in i]))
            if is_over == 3:
                return self.board[i[0]]
        # Columns
        tmp = [0, 3, 6]
        for i in range(3):
            is_over = abs(
                sum([self.symbol2value(self.board[i + k]) for k in tmp]))
            if is_over == 3:
                return self.board[i + tmp[0]]
        # Diagonal
        is_over = abs(sum([self.symbol2value(self.board[0]), self.symbol2value(
            self.board[4]), self.symbol2value(self.board[8])]))
        if is_over == 3:
            return self.board[0]
        is_over = abs(sum([self.symbol2value(self.board[2]), self.symbol2value(
            self.board[4]), self.symbol2value(self.board[6])]))
        if is_over == 3:
            return self.board[2]

        # If none of the above satisfied, then check if it is a draw
        if self.board.count(" ") <= 0:
            return "Draw"
        else:
            return False

    # For checking if a position is valid
    def isValid(self, pos):
        if pos < 9 and pos >= 0 and self.board[pos] == " ":
            return True
        else:
            return False

    def move(self, pos):
        if self.isValid(pos):
            self.board[pos] = self.turn
            self.changeTurn()
            return self.board
        else:
            return False