othello.py

import sys

def main():
    global mainBoard
    global playerTile
    global computerTile
    global pointsMatrix     

    pointsMatrix = [[10, -10, 3, 3, 3, 3, -10, 10],
    [-10, -10, -3, -3, -3, -3, -10, -10],
    [3, -3, 1, 1, 1, 1, -3, 3],
    [3, -3, 1, 1, 1, 1, -3, 3],
    [3, -3, 1, 1, 1, 1, -3, 3],
    [3, -3, 1, 1, 1, 1, -3, 3],
    [-10, -10, -3, -3, -3, -3, -10, -10],
    [10, -10, 3, 3, 3, 3, -10, 10]]

    print("A game of Othello")

    while True:
        mainBoard = get_new_board()
        playerTile, computerTile = enter_player_tile()
        turn = who_goes_first(playerTile)
        print('The ' + turn + ' will go first.')
        
        while True:
            if turn == 'player':
                validMovesBoard = get_valid_moves_board(mainBoard, playerTile)
                draw_board(validMovesBoard)
                show_points(playerTile, computerTile)
                move = get_player_move(mainBoard, playerTile)

                if move == 'quit':
                    print("Thanks for playing!")
                    sys.exit()
                else:
                    make_move(mainBoard, playerTile, move[0], move[1])

                if get_valid_moves(mainBoard, computerTile) == []:
                    break
                else:
                    turn = 'computer'

            else:
                draw_board(mainBoard)
                show_points(playerTile, computerTile)
                input("Press Enter to see the computer\'s move.")
                x, y = get_computer_move(mainBoard, computerTile)
                make_move(mainBoard, computerTile, x, y)
                if get_valid_moves(mainBoard, playerTile) == []:
                    break
                else:
                    turn = 'player'


        draw_board(mainBoard)
        scores = get_score(mainBoard)
        print(f"'@' scored {scores['@']} points. 'O' scored {scores['O']} points.")
        if scores[playerTile] > scores[computerTile]:
            print("You beat the computer by %s points! Congratulations!" % (scores[playerTile] - scores[computerTile]))
        elif scores[playerTile] < scores[computerTile]:
            print("You lost. The computer beat you by %s points." % (scores[computerTile] - scores[playerTile]))
        else:
            print("The game was a tie!")

        if not play_again():
            print("Thanks for playing!")
            break

def make_move(board, tile, xstart, ystart):
    tilesToFlip = is_valid_move(board, tile, xstart, ystart)
    if tilesToFlip == False:
        return False
    board[xstart][ystart] = tile
    for x, y in tilesToFlip:
        board[x][y] = tile
    return True