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m_board[i] = position.m_board[i]; + m_board[i] = position.m_board[i]; } m_turn = position.m_turn; @@ -53,7 +53,7 @@ void Position::clear_board() { Piece no_piece; for (int i = 0; i < 128; i++) { - m_board[i] = no_piece; + m_board[i] = no_piece; } } @@ -82,7 +82,7 @@ void Position::reset() { // Setup the white pawns. for (int x88_index = 96; x88_index <= 103; x88_index++) { - m_board[x88_index] = Piece('P'); + m_board[x88_index] = Piece('P'); } // Setup the black pieces. @@ -97,7 +97,7 @@ void Position::reset() { // Setup the black pawns. for (int x88_index = 16; x88_index <= 23; x88_index++) { - m_board[x88_index] = Piece('p'); + m_board[x88_index] = Piece('p'); } } @@ -113,9 +113,9 @@ boost::python::object Position::__getitem__(const boost::python::object& square_ int x88_index = x88_index_from_square_key(square_key); if (m_board[x88_index].is_valid()) { - return boost::python::object(m_board[x88_index]); + return boost::python::object(m_board[x88_index]); } else { - return boost::python::object(); + return boost::python::object(); } } @@ -123,10 +123,10 @@ void Position::__setitem__(const boost::python::object& square_key, const boost: int x88_index = x88_index_from_square_key(square_key); if (piece.ptr() == Py_None) { - m_board[x88_index] = Piece(); + m_board[x88_index] = Piece(); } else { - Piece& p = boost::python::extract(piece); - m_board[x88_index] = p; + Piece& p = boost::python::extract(piece); + m_board[x88_index] = p; } } @@ -141,17 +141,17 @@ char Position::turn() const { void Position::set_turn(char turn) { if (turn == 'w' || turn == 'b') { - m_turn = turn; + m_turn = turn; } else { - throw new std::invalid_argument("turn"); + throw new std::invalid_argument("turn"); } } void Position::toggle_turn() { if (m_turn == 'w') { - m_turn = 'b'; + m_turn = 'b'; } else { - m_turn = 'w'; + m_turn = 'w'; } } @@ -161,74 +161,74 @@ char Position::ep_file() const { boost::python::object Position::python_ep_file() const { if (m_ep_file) { - return boost::python::object(m_ep_file); + return boost::python::object(m_ep_file); } else { - return boost::python::object(); + return boost::python::object(); } } void Position::set_ep_file(char ep_file) { switch (ep_file) { - case 'a': - case 'b': - case 'c': - case 'd': - case 'e': - case 'f': - case 'g': - case 'h': - m_ep_file = ep_file; - break; - case '-': - case 0: - m_ep_file = 0; - default: - throw new std::invalid_argument("ep_file"); + case 'a': + case 'b': + case 'c': + case 'd': + case 'e': + case 'f': + case 'g': + case 'h': + m_ep_file = ep_file; + break; + case '-': + case 0: + m_ep_file = 0; + default: + throw new std::invalid_argument("ep_file"); } } void Position::python_set_ep_file(const boost::python::object& ep_file) { if (ep_file.ptr() == Py_None) { - m_ep_file = 0; + m_ep_file = 0; } else { - set_ep_file(boost::python::extract(ep_file)); + set_ep_file(boost::python::extract(ep_file)); } } Square Position::get_ep_square() const { if (m_ep_file) { - int rank = (m_turn == 'b') ? 2 : 5; - int pawn_rank = (m_turn == 'b') ? 3 : 4; - int file = m_ep_file - 'a'; - - // Ensure the square is empty. - Square square(rank, file); - if (get(square).is_valid()) { - return Square(); - } - - // Ensure a pawn is above the square. - Square pawn_square(pawn_rank, file); - Piece pawn_square_piece = get(pawn_square); - if (!pawn_square_piece.is_valid()) { - return Square(); - } - if (pawn_square_piece.type() != 'p') { - return Square(); - } - - return square; + int rank = (m_turn == 'b') ? 2 : 5; + int pawn_rank = (m_turn == 'b') ? 3 : 4; + int file = m_ep_file - 'a'; + + // Ensure the square is empty. + Square square(rank, file); + if (get(square).is_valid()) { + return Square(); + } + + // Ensure a pawn is above the square. + Square pawn_square(pawn_rank, file); + Piece pawn_square_piece = get(pawn_square); + if (!pawn_square_piece.is_valid()) { + return Square(); + } + if (pawn_square_piece.type() != 'p') { + return Square(); + } + + return square; } else { - return Square(); + return Square(); } } boost::python::object Position::python_get_ep_square() const { Square ep_square = get_ep_square(); if (ep_square.is_valid()) { - return boost::python::object(ep_square); + return boost::python::object(ep_square); } else { - return boost::python::object(); + return boost::python::object(); } } @@ -266,9 +266,9 @@ int Position::half_moves() const { void Position::set_half_moves(int half_moves) { if (half_moves < 0) { - throw new std::invalid_argument("half_moves"); + throw new std::invalid_argument("half_moves"); } else { - m_half_moves = half_moves; + m_half_moves = half_moves; } } @@ -278,9 +278,9 @@ int Position::ply() const { void Position::set_ply(int ply) { if (ply < 1) { - throw new std::invalid_argument("ply"); + throw new std::invalid_argument("ply"); } else { - m_ply = ply; + m_ply = ply; } } @@ -289,30 +289,30 @@ std::string Position::fen() const { std::string fen; char empty = '0'; for (int i = 0; i < 128; i++) { - if (!(i & 0x88)) { - Square square = Square::from_x88_index(i); - Piece piece = get(square); - if (piece.is_valid()) { - if (empty != '0') { - fen += empty; - empty = '0'; - } - fen += piece.symbol(); - } else { - empty++; - } - - if (i != 119 && square.file() == 7) { - if (empty != '0') { - fen += empty; - empty = '0'; - } - fen += "/"; - } - } + if (!(i & 0x88)) { + Square square = Square::from_x88_index(i); + Piece piece = get(square); + if (piece.is_valid()) { + if (empty != '0') { + fen += empty; + empty = '0'; + } + fen += piece.symbol(); + } else { + empty++; + } + + if (i != 119 && square.file() == 7) { + if (empty != '0') { + fen += empty; + empty = '0'; + } + fen += "/"; + } + } } if (empty != '0') { - fen += empty; + fen += empty; } // Add the turn. @@ -322,33 +322,33 @@ std::string Position::fen() const { // Add castling flags. fen += " "; if (m_white_castle_kingside || - m_white_castle_queenside || - m_black_castle_kingside || - m_black_castle_queenside) + m_white_castle_queenside || + m_black_castle_kingside || + m_black_castle_queenside) { - if (m_white_castle_kingside) { - fen += 'K'; - } - if (m_white_castle_queenside) { - fen += 'Q'; - } - if (m_black_castle_kingside) { - fen += 'k'; - } - if (m_black_castle_queenside) { - fen += 'q'; - } + if (m_white_castle_kingside) { + fen += 'K'; + } + if (m_white_castle_queenside) { + fen += 'Q'; + } + if (m_black_castle_kingside) { + fen += 'k'; + } + if (m_black_castle_queenside) { + fen += 'q'; + } } else { - fen += '-'; + fen += '-'; } // Add the en-passant square. fen += " "; Square ep_square = get_ep_square(); if (ep_square.is_valid()) { - fen += ep_square.name(); + fen += ep_square.name(); } else { - fen += '-'; + fen += '-'; } // Add the half move count. @@ -367,91 +367,91 @@ void Position::set_fen(const std::string& fen) { std::vector parts; boost::algorithm::split(parts, fen, boost::is_any_of("\t "), boost::token_compress_on); if (parts.size() != 6) { - throw new std::invalid_argument("fen"); + throw new std::invalid_argument("fen"); } // Ensure the board part is valid. std::vector rows; boost::algorithm::split(rows, parts[0], boost::is_any_of("/")); if (rows.size() != 8) { - throw new std::invalid_argument("fen"); + throw new std::invalid_argument("fen"); } for (std::vector::iterator row = rows.begin(); row != rows.end(); ++row) { - int field_sum = 0; - bool previous_was_number = false; - for (unsigned int i = 0; i < row->length(); i++) { - char c = row->at(i); - if (c >= '1' && c <= '8') { - if (previous_was_number) { - throw new std::invalid_argument("fen"); - } - field_sum += c - '0'; - previous_was_number = true; - } else { - switch (c) { - case 'p': - case 'n': - case 'b': - case 'r': - case 'q': - case 'k': - case 'P': - case 'N': - case 'B': - case 'R': - case 'Q': - case 'K': - field_sum++; - previous_was_number = false; - break; - default: - throw new std::invalid_argument("fen"); - } - } - } - if (field_sum != 8) { - throw new std::invalid_argument("fen"); - } + int field_sum = 0; + bool previous_was_number = false; + for (unsigned int i = 0; i < row->length(); i++) { + char c = row->at(i); + if (c >= '1' && c <= '8') { + if (previous_was_number) { + throw new std::invalid_argument("fen"); + } + field_sum += c - '0'; + previous_was_number = true; + } else { + switch (c) { + case 'p': + case 'n': + case 'b': + case 'r': + case 'q': + case 'k': + case 'P': + case 'N': + case 'B': + case 'R': + case 'Q': + case 'K': + field_sum++; + previous_was_number = false; + break; + default: + throw new std::invalid_argument("fen"); + } + } + } + if (field_sum != 8) { + throw new std::invalid_argument("fen"); + } } // Check that the turn part is valid. if (parts[1] != "w" && parts[1] != "b") { - throw new std::invalid_argument("fen"); + throw new std::invalid_argument("fen"); } // Check that the castling flag part is valid. if (!boost::regex_match(parts[2], boost::regex("^(KQ?k?q?|Qk?q?|kq?|q|-)$"))) { - throw new std::invalid_argument("fen"); + throw new std::invalid_argument("fen"); } // Check that the en-passant part is valid. if (!boost::regex_match(parts[3], boost::regex("^(-|[a-h][36])$"))) { - throw new std::invalid_argument("fen"); + throw new std::invalid_argument("fen"); } // Check that the half move part is valid. if (!boost::regex_match(parts[4], boost::regex("^0|[1-9][0-9]*$"))) { - throw new std::invalid_argument("fen"); + throw new std::invalid_argument("fen"); } // Check that the ply part is valid. if (!boost::regex_match(parts[5], boost::regex("^[1-9][0-9]*$"))) { - throw new std::invalid_argument("fen"); + throw new std::invalid_argument("fen"); } // Set the pieces on the board. clear_board(); int x88_index = 0; for (unsigned int i = 0; i < parts[0].length(); i++) { - char c = parts[0].at(i); - if (c == '/') { - x88_index += 8; - } else if (c >= '1' && c <= '8') { - x88_index += c - '0'; - } else { - m_board[x88_index] = Piece(c); - x88_index++; - } + char c = parts[0].at(i); + if (c == '/') { + x88_index += 8; + } else if (c >= '1' && c <= '8') { + x88_index += c - '0'; + } else { + m_board[x88_index] = Piece(c); + x88_index++; + } } // Set the turn. @@ -463,28 +463,28 @@ void Position::set_fen(const std::string& fen) { m_black_castle_kingside = false; m_black_castle_queenside = false; for (unsigned int i = 0; i < parts[2].length(); i++) { - switch (parts[2].at(i)) { - case 'K': - m_white_castle_kingside = true; - break; - case 'Q': - m_white_castle_queenside = true; - break; - case 'k': - m_black_castle_kingside = true; - break; - case 'q': - m_black_castle_queenside = true; - break; - } + switch (parts[2].at(i)) { + case 'K': + m_white_castle_kingside = true; + break; + case 'Q': + m_white_castle_queenside = true; + break; + case 'k': + m_black_castle_kingside = true; + break; + case 'q': + m_black_castle_queenside = true; + break; + } } // Set the en-passant file. char ep_file = parts[3].at(0); if (ep_file == '-') { - m_ep_file = 0; + m_ep_file = 0; } else { - m_ep_file = ep_file; + m_ep_file = ep_file; } // Set the move counters. @@ -509,42 +509,42 @@ uint64_t Position::__hash__() const { // Hash in the board setup. for (int i = 0; i < 128; i++) { - if (m_board[i].is_valid()) { - Square square = Square::from_x88_index(i); + if (m_board[i].is_valid()) { + Square square = Square::from_x88_index(i); - const char *pieces = "pPnNbBrRqQkK"; - int piece_index = 0; - while (m_board[i].symbol() != pieces[piece_index]) { - piece_index++; - } + const char *pieces = "pPnNbBrRqQkK"; + int piece_index = 0; + while (m_board[i].symbol() != pieces[piece_index]) { + piece_index++; + } - hash ^= POLYGLOT_RANDOM_ARRAY[64 * piece_index + 8 * square.rank() + square.file()]; - } + hash ^= POLYGLOT_RANDOM_ARRAY[64 * piece_index + 8 * square.rank() + square.file()]; + } } // Hash in the castling flags. if (m_white_castle_kingside) { - hash ^= POLYGLOT_RANDOM_ARRAY[768]; + hash ^= POLYGLOT_RANDOM_ARRAY[768]; } if (m_white_castle_queenside) { - hash ^= POLYGLOT_RANDOM_ARRAY[768 + 1]; + hash ^= POLYGLOT_RANDOM_ARRAY[768 + 1]; } if (m_black_castle_kingside) { - hash ^= POLYGLOT_RANDOM_ARRAY[768 + 2]; + hash ^= POLYGLOT_RANDOM_ARRAY[768 + 2]; } if (m_black_castle_queenside) { - hash ^= POLYGLOT_RANDOM_ARRAY[768 + 3]; + hash ^= POLYGLOT_RANDOM_ARRAY[768 + 3]; } // Hash in the en-passant file. Square ep_square = get_real_ep_square(); if (ep_square.is_valid()) { - hash ^= POLYGLOT_RANDOM_ARRAY[772 + ep_square.file()]; + hash ^= POLYGLOT_RANDOM_ARRAY[772 + ep_square.file()]; } // Hash in the turn. if (m_turn == 'w') { - hash ^= POLYGLOT_RANDOM_ARRAY[780]; + hash ^= POLYGLOT_RANDOM_ARRAY[780]; } return hash; @@ -554,9 +554,9 @@ Square Position::get_king(char color) const { Piece king = Piece::from_color_and_type(color, 'k'); for (int i = 0; i < 128; i++) { - if (m_board[i] == king) { - return Square::from_x88_index(i); - } + if (m_board[i] == king) { + return Square::from_x88_index(i); + } } return Square(); @@ -565,9 +565,9 @@ Square Position::get_king(char color) const { boost::python::object Position::python_get_king(char color) const { Square square = get_king(color); if (square.is_valid()) { - return boost::python::object(square); + return boost::python::object(square); } else { - return boost::python::object(); + return boost::python::object(); } } @@ -583,11 +583,11 @@ bool Position::is_check() const { bool Position::is_checkmate() const { if (!is_check()) { - return false; + return false; } else { - // TODO: Consider more efficient checkmate detection. - LegalMoveGenerator legal_moves(*this); - return !legal_moves.__nonzero__(); + // TODO: Consider more efficient checkmate detection. + LegalMoveGenerator legal_moves(*this); + return !legal_moves.__nonzero__(); } } @@ -671,150 +671,150 @@ bool Position::is_game_over() const { bool Position::could_have_kingside_castling_right(char color) const { int rank; if (color == 'w') { - rank = 0; + rank = 0; } else if (color == 'b') { - rank = 7; + rank = 7; } else { - throw std::invalid_argument("color"); + throw std::invalid_argument("color"); } return (get(Square(rank, 4)) == Piece::from_color_and_type(color, 'k') && - get(Square(rank, 7)) == Piece::from_color_and_type(color, 'r')); + get(Square(rank, 7)) == Piece::from_color_and_type(color, 'r')); } bool Position::could_have_queenside_castling_right(char color) const { int rank; if (color == 'w') { - rank = 0; + rank = 0; } else if (color == 'b') { - rank = 7; + rank = 7; } else { - throw std::invalid_argument("color"); + throw std::invalid_argument("color"); } return (get(Square(rank, 4)) == Piece::from_color_and_type(color, 'k') && - get(Square(rank, 0)) == Piece::from_color_and_type(color, 'r')); + get(Square(rank, 0)) == Piece::from_color_and_type(color, 'r')); } bool Position::has_kingside_castling_right(char color) const { if (color == 'w') { - return m_white_castle_kingside; + return m_white_castle_kingside; } else if (color == 'b') { - return m_black_castle_kingside; + return m_black_castle_kingside; } else { - throw std::invalid_argument("color"); + throw std::invalid_argument("color"); } } bool Position::has_queenside_castling_right(char color) const { if (color == 'w') { - return m_white_castle_queenside; + return m_white_castle_queenside; } else if (color == 'b') { - return m_black_castle_queenside; + return m_black_castle_queenside; } else { - throw std::invalid_argument("color"); + throw std::invalid_argument("color"); } } void Position::set_kingside_castling_right(char color, bool castle) { if (color == 'w') { - m_white_castle_kingside = castle; + m_white_castle_kingside = castle; } else if (color == 'b') { - m_black_castle_kingside = castle; + m_black_castle_kingside = castle; } else { - throw std::invalid_argument("color"); + throw std::invalid_argument("color"); } } void Position::set_queenside_castling_right(char color, bool castle) { if (color == 'w') { - m_white_castle_queenside = castle; + m_white_castle_queenside = castle; } else if (color == 'b') { - m_black_castle_queenside = castle; + m_black_castle_queenside = castle; } else { - throw std::invalid_argument("color"); + throw std::invalid_argument("color"); } } Move Position::get_move_from_san(const std::string& san) const { LegalMoveGenerator legal_moves(*this); - if (san == "o-o" || san == "o-o-o") { - // Castling moves. - Square target; - int rank = m_turn == 'w' ? 0 : 7; - if (san == "o-o") { - target = Square(rank, 6); - } else { - target = Square(rank, 2); - } - Move move(Square(rank, 4), target); - - if (legal_moves.__contains__(move)) { - return move; - } + if (san == "O-O" || san == "O-O-O") { + // Castling moves. + Square target; + int rank = m_turn == 'w' ? 0 : 7; + if (san == "O-O") { + target = Square(rank, 6); + } else { + target = Square(rank, 2); + } + Move move(Square(rank, 4), target); + + if (legal_moves.__contains__(move)) { + return move; + } } else { - boost::smatch matches; - if (boost::regex_match(san, matches, boost::regex("^([NBKRQ])?([a-h])?([1-8])?x?([a-h][1-8])(=[NBRQ])?(\\+|#)?$"), boost::match_extra)) { - // Get the piece type. - std::string matched_piece(matches[1].first, matches[1].second); - Piece piece = Piece::from_color_and_type( - m_turn, - matched_piece == "" ? 'p' : tolower(matched_piece.at(0))); - - // Get the target square. - std::string matched_target(matches[4].first, matches[4].second); - Square target = Square(matched_target); - - // Get the source file and rank. - std::string matched_file(matches[2].first, matches[2].second); - std::string matched_rank(matches[3].first, matches[3].second); - int file = matched_file == "" ? -1 : (matched_file.at(0) - 'a'); - int rank = matched_rank == "" ? -1 : (matched_rank.at(0) - '1'); - - // Get the promotion type. - std::string matched_promotion(matches[5].first, matches[5].second); - char promotion = matched_promotion == "" ? 0 : tolower(matched_promotion.at(0)); - - // Find a matching move. - legal_moves.__iter__(); - Square source; - while (legal_moves.has_more()) { - Move move = legal_moves.next(); - - if (move.promotion() != promotion) { - continue; - } - - if (get(move.source()) != piece || move.target() != target) { - continue; - } - - if (file != -1 && file != move.source().file()) { - continue; - } - - if (rank != -1 && rank != move.source().rank()) { - continue; - } - - // Found a matching move. Make sure it is not ambigous. - if (source.is_valid()) { - throw std::invalid_argument("san"); - } - source = move.source(); - } - - // Return the found move. - if (source.is_valid()) { - if (promotion) { - return Move(source, target, promotion); - } else { - return Move(source, target); - } - } - } + boost::smatch matches; + if (boost::regex_match(san, matches, boost::regex("^([NBKRQ])?([a-h])?([1-8])?x?([a-h][1-8])(=[nbrqNBRQ])?(\\+|#)?$"), boost::match_extra)) { + // Get the piece type. + std::string matched_piece(matches[1].first, matches[1].second); + Piece piece = Piece::from_color_and_type( + m_turn, + matched_piece == "" ? 'p' : tolower(matched_piece.at(0))); + + // Get the target square. + std::string matched_target(matches[4].first, matches[4].second); + Square target = Square(matched_target); + + // Get the source file and rank. + std::string matched_file(matches[2].first, matches[2].second); + std::string matched_rank(matches[3].first, matches[3].second); + int file = matched_file == "" ? -1 : (matched_file.at(0) - 'a'); + int rank = matched_rank == "" ? -1 : (matched_rank.at(0) - '1'); + + // Get the promotion type. + std::string matched_promotion(matches[5].first, matches[5].second); + char promotion = matched_promotion == "" ? 0 : tolower(matched_promotion.at(0)); + + // Find a matching move. + legal_moves.__iter__(); + Square source; + while (legal_moves.has_more()) { + Move move = legal_moves.next(); + + if (move.promotion() != promotion) { + continue; + } + + if (get(move.source()) != piece || move.target() != target) { + continue; + } + + if (file != -1 && file != move.source().file()) { + continue; + } + + if (rank != -1 && rank != move.source().rank()) { + continue; + } + + // Found a matching move. Make sure it is not ambigous. + if (source.is_valid()) { + throw std::invalid_argument("san"); + } + source = move.source(); + } + + // Return the found move. + if (source.is_valid()) { + if (promotion) { + return Move(source, target, promotion); + } else { + return Move(source, target); + } + } + } } throw std::invalid_argument("san"); @@ -827,7 +827,7 @@ MoveInfo Position::make_move_from_san(const std::string& san) { MoveInfo Position::make_unvalidated_move_fast(const Move& move) { Piece piece = get(move.source()); if (!piece.is_valid()) { - throw new std::invalid_argument("move"); + throw new std::invalid_argument("move"); } MoveInfo info(move, piece); info.set_captured(get(move.target())); @@ -842,49 +842,53 @@ MoveInfo Position::make_unvalidated_move_fast(const Move& move) { // Pawn moves. m_ep_file = 0; if (piece.type() == 'p') { - // En-passant. - if (move.target().file() != move.source().file() && !info.captured().is_valid()) { - int capture_square_index; - if (m_turn == 'b') { - capture_square_index = Square(4, move.target().file()).x88_index(); - } else { - capture_square_index = Square(3, move.target().file()).x88_index(); - } - info.set_captured(m_board[capture_square_index]); - info.set_is_enpassant(true); - } - - // If two steps forward, set the en-passant file. - if (abs(move.target().rank() - move.source().rank()) == 2) { - m_ep_file = move.target().file() + 'a'; - } + // En-passant. + if (move.target().file() != move.source().file() && !info.captured().is_valid()) { + // Get information about the captured piece. + int capture_square_index; + if (m_turn == 'b') { + capture_square_index = Square(4, move.target().file()).x88_index(); + } else { + capture_square_index = Square(3, move.target().file()).x88_index(); + } + info.set_captured(m_board[capture_square_index]); + info.set_is_enpassant(true); + + // Remove the captured piece. + m_board[capture_square_index] = Piece(); + } + + // If two steps forward, set the en-passant file. + if (abs(move.target().rank() - move.source().rank()) == 2) { + m_ep_file = move.target().file() + 'a'; + } } // Promotion. if (move.promotion()) { - set(move.target(), Piece::from_color_and_type(piece.color(), move.promotion())); + set(move.target(), Piece::from_color_and_type(piece.color(), move.promotion())); } // Castling. if (piece.type() == 'k') { - int steps = move.target().file() - move.source().file(); - int backrank = (m_turn == 'b') ? 0 : 7; - if (steps == 2) { - info.set_is_kingside_castle(true); - set(Square(backrank, 5), get(Square(backrank, 7))); - set(Square(backrank, 7), Piece()); - } else if (steps == -2) { - info.set_is_queenside_castle(true); - set(Square(backrank, 3), get(Square(backrank, 0))); - set(Square(backrank, 0), Piece()); - } + int steps = move.target().file() - move.source().file(); + int backrank = (m_turn == 'b') ? 0 : 7; + if (steps == 2) { + info.set_is_kingside_castle(true); + set(Square(backrank, 5), get(Square(backrank, 7))); + set(Square(backrank, 7), Piece()); + } else if (steps == -2) { + info.set_is_queenside_castle(true); + set(Square(backrank, 3), get(Square(backrank, 0))); + set(Square(backrank, 0), Piece()); + } } // Update the half move counter. if (piece.type() == 'p' || info.captured().is_valid()) { - m_half_moves = 0; + m_half_moves = 0; } else { - m_half_moves++; + m_half_moves++; } // Increment the move number. @@ -894,11 +898,11 @@ MoveInfo Position::make_unvalidated_move_fast(const Move& move) { // Update castling rights. if (m_turn == 'w') { - m_black_castle_kingside = m_black_castle_kingside && could_have_kingside_castling_right('b'); - m_black_castle_queenside = m_black_castle_queenside && could_have_queenside_castling_right('b'); + m_black_castle_kingside = m_black_castle_kingside && could_have_kingside_castling_right('b'); + m_black_castle_queenside = m_black_castle_queenside && could_have_queenside_castling_right('b'); } else { - m_white_castle_kingside = m_white_castle_kingside && could_have_kingside_castling_right('w'); - m_white_castle_queenside = m_white_castle_queenside && could_have_queenside_castling_right('w'); + m_white_castle_kingside = m_white_castle_kingside && could_have_kingside_castling_right('w'); + m_white_castle_queenside = m_white_castle_queenside && could_have_queenside_castling_right('w'); } return info; @@ -908,7 +912,7 @@ MoveInfo Position::make_move(const Move& move) { // Make sure the move is valid. LegalMoveGenerator legal_moves(*this); if (!legal_moves.__contains__(move)) { - throw new std::invalid_argument("move"); + throw new std::invalid_argument("move"); } // Do the move. @@ -920,63 +924,63 @@ MoveInfo Position::make_move(const Move& move) { // Generate the SAN. if (info.is_kingside_castle()) { - info.set_san("o-o"); + info.set_san("O-O"); } else if (info.is_queenside_castle()) { - info.set_san("o-o-o"); + info.set_san("O-O-O"); } else { - // Add the piece type. - if (info.piece().type() != 'p') { - info.set_san(info.san() + (char)toupper(info.piece().type())); - } - - // Add a disambiguator. - bool is_ambigous = false; - bool same_rank = false; - bool same_file = false; - legal_moves.__iter__(); - while (legal_moves.has_more()) { - Move m = legal_moves.next(); - if (get(m.source()) == info.piece() && move.source() != m.source() && move.target() == m.target()) { - is_ambigous = true; - - if (move.source().rank() == m.source().rank()) { - same_rank = true; - } - if (move.source().file() == m.source().file()) { - same_file = true; - } - if (same_rank && same_file) { - break; - } - } - } - if (same_rank && same_file) { - info.set_san(info.san() + move.source().name()); - } else if (same_file) { - info.set_san(info.san() + (char)('1' + move.source().rank())); - } else if (same_rank || is_ambigous) { - info.set_san(info.san() + move.source().file_name()); - } - - // Handle captures. - if (info.captured().is_valid()) { - if (info.piece().type() == 'p') { - info.set_san(info.san() + move.source().file_name()); - } - info.set_san(info.san() + "x"); - } - - // Add the target name. - info.set_san(info.san() + move.target().name()); + // Add the piece type. + if (info.piece().type() != 'p') { + info.set_san(info.san() + (char)toupper(info.piece().type())); + } + + // Add a disambiguator. + bool is_ambigous = false; + bool same_rank = false; + bool same_file = false; + legal_moves.__iter__(); + while (legal_moves.has_more()) { + Move m = legal_moves.next(); + if (get(m.source()) == info.piece() && move.source() != m.source() && move.target() == m.target()) { + is_ambigous = true; + + if (move.source().rank() == m.source().rank()) { + same_rank = true; + } + if (move.source().file() == m.source().file()) { + same_file = true; + } + if (same_rank && same_file) { + break; + } + } + } + if (same_rank && same_file) { + info.set_san(info.san() + move.source().name()); + } else if (same_file) { + info.set_san(info.san() + (char)('1' + move.source().rank())); + } else if (same_rank || is_ambigous) { + info.set_san(info.san() + move.source().file_name()); + } + + // Handle captures. + if (info.captured().is_valid()) { + if (info.piece().type() == 'p') { + info.set_san(info.san() + move.source().file_name()); + } + info.set_san(info.san() + "x"); + } + + // Add the target name. + info.set_san(info.san() + move.target().name()); } if (info.is_checkmate()) { - info.set_san(info.san() + "#"); + info.set_san(info.san() + "#"); } else if (info.is_check()) { - info.set_san(info.san() + "+"); + info.set_san(info.san() + "+"); } if (info.is_enpassant()) { - info.set_san(info.san() + " (e.p.)"); + info.set_san(info.san() + " (e.p.)"); } return info; @@ -985,7 +989,7 @@ MoveInfo Position::make_move(const Move& move) { void Position::make_move_fast(const Move& move) { LegalMoveGenerator legal_moves(*this); if (!legal_moves.__contains__(move)) { - throw new std::invalid_argument("move"); + throw new std::invalid_argument("move"); } make_unvalidated_move_fast(move); } @@ -1009,21 +1013,21 @@ Position& Position::operator=(const Position& rhs) { bool Position::operator==(const Position& rhs) const { if (m_turn != rhs.m_turn || - m_ep_file != rhs.m_ep_file || - m_half_moves != rhs.m_half_moves || - m_ply != rhs.m_ply || - m_white_castle_queenside != rhs.m_white_castle_queenside || - m_white_castle_kingside != rhs.m_white_castle_kingside || - m_black_castle_queenside != rhs.m_black_castle_queenside || - m_black_castle_kingside != rhs.m_black_castle_kingside) + m_ep_file != rhs.m_ep_file || + m_half_moves != rhs.m_half_moves || + m_ply != rhs.m_ply || + m_white_castle_queenside != rhs.m_white_castle_queenside || + m_white_castle_kingside != rhs.m_white_castle_kingside || + m_black_castle_queenside != rhs.m_black_castle_queenside || + m_black_castle_kingside != rhs.m_black_castle_kingside) { - return false; + return false; } for (int i = 0; i < 128; i++) { - if (m_board[i] != rhs.m_board[i]) { - return false; - } + if (m_board[i] != rhs.m_board[i]) { + return false; + } } return true; @@ -1036,13 +1040,13 @@ bool Position::operator!=(const Position& rhs) const { int Position::x88_index_from_square_key(const boost::python::object& square_key) const { boost::python::extract extract_square(square_key); if (extract_square.check()) { - Square& square = extract_square(); - return square.x88_index(); + Square& square = extract_square(); + return square.x88_index(); } else { - std::string square_name = boost::python::extract(square_key); - Square square = Square(square_name); - return square.x88_index(); + std::string square_name = boost::python::extract(square_key); + Square square = Square(square_name); + return square.x88_index(); } } diff --git a/scripts/ecotool.py b/scripts/ecotool.py index 33c9ad733..2f7b7662a 100755 --- a/scripts/ecotool.py +++ b/scripts/ecotool.py @@ -1,4 +1,21 @@ #!/usr/bin/env python +# -*- coding: utf-8 -*- +# +# This file is part of the python-chess library. +# Copyright (C) 2012 Niklas Fiekas +# +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . import argparse import chess @@ -70,10 +87,10 @@ def read_eco(source): position = chess.Position() else: san = token.split(".")[-1] - if san in ["0-0", "O-O"]: - san = "o-o" - elif san in ["0-0-0", "O-O-O"]: - san = "o-o-o" + if san in ["0-0", "o-o"]: + san = "O-O" + elif san in ["0-0-0", "o-o-o"]: + san = "O-O-O" position.make_move_from_san(san) elif state == 4: # State 4: Waiting for end of record. diff --git a/setup.py b/setup.py index 63b27f40a..5d0f773fc 100755 --- a/setup.py +++ b/setup.py @@ -34,7 +34,7 @@ def read(filename): # Module description. setuptools.setup( name="python-chess", - version="0.0.4", + version="0.0.5", author="Niklas Fiekas", author_email="niklas.fiekas@tu-clausthal.de", description="A chess library.", diff --git a/tests/test_position.py b/tests/test_position.py index 0ce175a77..10f2364d9 100644 --- a/tests/test_position.py +++ b/tests/test_position.py @@ -167,7 +167,6 @@ def test_ambigous_rank(self): fifth_rank_move = pos.get_move_from_san("N5f3") self.assertEqual(fifth_rank_move, chess.Move.from_uci("g5f3")) - def test_insufficient_material(self): """Tests material counting.""" # Starting position. @@ -181,3 +180,10 @@ def test_insufficient_material(self): # Add a black bishop of the opposite color for the weaker side. pos["b8"] = chess.Piece("b") self.assertFalse(pos.is_insufficient_material()) + + def test_enpassant(self): + """Test pawns captured en passant are removed.""" + pos = chess.Position("rnbqkbnr/pp2pppp/2p5/3pP3/8/8/PPPP1PPP/RNBQKBNR w KQkq d6 0 3") + move_info = pos.make_move_from_san("exd6") + self.assertTrue(move_info.is_enpassant) + self.assertEqual(pos.fen, "rnbqkbnr/pp2pppp/2pP4/8/8/8/PPPP1PPP/RNBQKBNR b KQkq - 0 3")