def test_knight_valid_start_moves():
board = Board()
board.reset_pieces()
knight = Knight(7, 3, 'w')
knight.valid_moves(board)
actual = knight.move_list
expected = [[5, 2], [5, 4]]
def test_knight_valid_moves():
board = Board()
knight = Knight(4, 4, 'w')
knight.valid_moves(board)
actual = knight.move_list
expected = [[2, 3], [2, 5], [3, 2], [3, 6], [6, 3], [6, 5], [5, 2], [5, 6]]
assert actual == expected
def test_knight_valid_attack():
board = Board()
knight = Knight(4, 4, 'w')
board.board[6][5] = Pawn(6, 5, 'b')
board.board[6][3] = Pawn(6, 3, 'b')
board.board[5][6] = Pawn(5, 6, 'b')
knight.valid_moves(board)
actual = knight.attack_list
expected = [[6, 3], [6, 5], [5, 6]]
assert actual == expected
def is_controlled_sq(self, req_pos, turn):
'''
Checks whether a square is controlled by a piece.
'turn' means controlled by piece of which colour/turn
'''
# Along knight routes (L)
knight = Knight(0)
knight.set_pos(req_pos)
# print(self.get_sq_notation(req_pos))
# print()
for move in knight.valid_moves():
# print(self.get_sq_notation(move), end=': ')
piece = self.fetch_piece(move)
# print(piece)
if piece and type(piece).__name__ == 'Knight' and piece.colour == turn:
# self.pos_of_piece_causing_check = move
# print('yeah')
del knight
return True
# Along diagonals
bishop = Bishop(0)
bishop.set_pos(req_pos)
for move in bishop.valid_moves():
piece = self.fetch_piece(move)
if piece and \
(type(piece).__name__ == 'Bishop' or
type(piece).__name__ == 'Queen') and \
piece.colour == turn and \
not piece.is_path_obstructed(self, req_pos, move):
# print('yes')
# self.pos_of_piece_causing_check = move
del bishop
# print('Obstruct')
return True
# Along ranks and files
rook = Rook(0)
rook.set_pos(req_pos)
for move in rook.valid_moves():
# print(self.get_sq_notation(move), end=": ")
piece = self.fetch_piece(move)
# print(piece)
if piece and (type(piece).__name__ == 'Rook' or
type(piece).__name__ == 'Queen') and \
piece.colour == turn and \
not piece.is_path_obstructed(self, req_pos, move):
# self.pos_of_piece_causing_check = move
# print('here')
del rook
return True
# King opposition
king = King()
king.set_pos(req_pos)
for move in king.valid_moves():
piece = self.fetch_piece(move)
if piece and type(piece).__name__ == 'King' and piece.colour == turn:
if not self.is_controlled_sq(move, self.turn):
# print('here')
# self.pos_of_piece_causing_check = move
del king
return True
# Pawns
if turn == 'White':
pawn = Pawn(colour='Black')
else:
pawn = Pawn()
pawn.set_pos(req_pos)
for move in pawn.valid_moves(self.is_flipped):
# If directly in front/back
if move[0] - req_pos[0] == 0:
continue
piece = self.fetch_piece(move)
if piece and type(piece).__name__ == 'Pawn' and piece.colour == turn:
# self.pos_of_piece_causing_check = move
del pawn
return True
del knight, bishop, rook, king, pawn
# print('Nope')
return False
