# (See accompanying file LICENSE_1_0.txt or copy at
# http://www.boost.org/LICENSE_1_0.txt)
"""Tic-tac-toe game where the computer player goes first."""
import ai
import rules
player_char = 'o'
comp_char = 'x'
board = [' '] * 9
winner = None
first_move = True
legend = "123456789"
rules.printBoard(legend)
print "\nComputer goes first\n"
while not winner and not rules.isFull(board):
# On the first turn, skip the human player to let the computer go first.
if not first_move:
# Player's turn
board[ai.humanPlayer(board)] = player_char
winner = rules.getWinner(board)
# Computer's turn
if not winner and not rules.isFull(board):
if first_move:
board[ai.firstMove()] = comp_char
else:
# Don't care what the score was, just take the best move.
first_move = True
while not winner and not rules.isFull(board):
# Skip the naive player's first turn if the smart player goes first.
if not first_move or naive_goes_first:
# Naive player's turn.
if first_move:
board[ai.firstMove()] = naive_char
else:
board[ai.tryToBeSmart(board, naive_char)] = naive_char
winner = rules.getWinner(board)
first_move = False
if not winner and not rules.isFull(board):
# Smart player's turn
if first_move:
board[ai.firstMove()] = smart_char
else:
# Don't care what the score was, just take the best move.
_, move = ai.negamax(board, smart_char)
assert move is not None
board[move] = smart_char
winner = rules.getWinner(board)
first_move = False
# Either the game just ended or we're on to the next round.
rules.printBoard(board)
print
rules.printEndGame(winner)
