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from typing import Any, Callable, Iterable, List, Union
import chess
def uci_to_board(
uci_moves: Union[str, Iterable],
*,
force=False,
fail_silent=False,
verbose=True,
as_board_stack=False,
map_function: Callable = lambda x: x,
reset_halfmove_clock = False,
) -> Union[chess.Board, List[Union[chess.Board, Any]]]:
"""Returns a chess.Board object from a string of UCI moves
Params:
force: If true, illegal moves are forcefully made. O/w, the rror is thrown
verbose: Alert user via prints that illegal moves were attempted."""
board = chess.Board()
forced_moves = []
did_force = False
board_stack = [map_function(board.copy())]
if isinstance(uci_moves, str):
uci_moves = uci_moves.split(" ")
for i, move in enumerate(uci_moves):
try:
move_obj = board.parse_uci(move)
if reset_halfmove_clock:
board.halfmove_clock = 0
board.push(move_obj)
except (chess.IllegalMoveError, chess.InvalidMoveError) as ex:
if force:
did_force = True
forced_moves.append((i, move))
piece = board.piece_at(chess.parse_square(move[:2]))
board.set_piece_at(chess.parse_square(move[:2]), None)
board.set_piece_at(chess.parse_square(move[2:4]), piece)
elif fail_silent:
if as_board_stack:
return board_stack
else:
return map_function(board)
else:
if verbose:
print(f"Failed on (move_id, uci): ({i},{move})")
if as_board_stack:
return board_stack
else:
return map_function(board)
else:
raise ex
board_stack.append(map_function(board.copy()))
if verbose and did_force:
print(f"Forced (move_id, uci): {forced_moves}")
if as_board_stack:
return board_stack
else:
return map_function(board)
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