def make_move(move: Move, game: Game) -> Game:
"""Make move.
Attention: no checking of check after move. Technically move can be not valid!!!
"""
# Copy game (pass by value)
game = copy.deepcopy(game)
# Retrieve piece at start position
piece = game.board.get_piece(move.start)
# Get possible moves
possible_moves = PieceMoves.moves(piece.type, move.start, game)
# Check if move satisfies
if move in possible_moves:
# Check if castling occurs
if move in PieceMoves.castling_moves(move.start, game):
game.board.set_piece(
Position(int((move.finish.x + move.start.x) / 2),
move.start.y),
Piece(PieceType.ROOK, game.turn),
)
# Short castling
if move.finish.x - move.start.x > 0:
game.board.remove_piece(Position(7, move.start.y))
# Long castling
else:
game.board.remove_piece(Position(0, move.start.y))
# Check if en passant occurs
if move in PieceMoves.en_passant_moves(move.start, game):
game.board.remove_piece(Position(move.finish.x, move.start.y))
# Update board
game.board.set_piece(move.finish, piece)
game.board.remove_piece(move.start)
# Update history
game.history_moves.append(move)
return Game(game.board, Colour.change_colour(game.turn),
game.history_moves)
def test_en_passant_moves(self):
"""Test of en_passant_moves() method."""
assert sorted(PieceMoves.en_passant_moves(Position(
4, 4), self.game)) == [Move(Position(4, 4), Position(3, 5))]