def __is_castling(self, _from, to):
y_from = _from[1]
y_to = to[1]
x_rook = 'a'
between = ['b', 'c', 'd']
if x.index(_from[0]) - x.index(to[0]) == -2:
x_rook = 'h'
between = ['f', 'g']
king = self.squares[_from]
rook = self.squares[x_rook + y_to]
if not isinstance(rook, Rook):
return False
if y_from != y_to:
return False
if x.index(_from[0]) - x.index(to[0]) not in [-2, 2]:
return False
if king.moved or rook.moved:
return False
if king.color != rook.color:
return False
for _x in between:
if self.squares[_x + y_to] is not None:
return False
return True
def __is_castling(self, _from, to):
y_from = _from[1]
y_to = to[1]
x_rook = 'a'
between = ['b', 'c', 'd']
if x.index(_from[0]) - x.index(to[0]) == -2:
x_rook = 'h'
between = ['f', 'g']
king = self.squares[_from]
rook = self.squares[x_rook + y_to]
if not isinstance(rook, Rook):
return False
if y_from != y_to:
return False
if x.index(_from[0]) - x.index(to[0]) not in [-2, 2]:
return False
if king.moved or rook.moved:
return False
if king.color != rook.color:
return False
for _x in between:
if self.squares[_x + y_to] is not None:
return False
return True
def __is_castling(self, source, destination):
y_source = source[1]
y_destination = destination[1]
x_rook = 'a'
between = ['b', 'c', 'd']
if x.index(source[0]) - x.index(destination[0]) == -2:
x_rook = 'h'
between = ['f', 'g']
king = self.get_piece(source)
rook = self.get_piece(x_rook + y_destination)
if not isinstance(rook, Rook):
return False
if y_source != y_destination:
return False
if x.index(source[0]) - x.index(destination[0]) not in [-2, 2]:
return False
if king.moved or rook.moved:
return False
if king.color != rook.color:
return False
for _x in between:
if self.get_piece(_x + y_destination) is not None:
return False
return True
def can_move_vertically_or_horizontally(self, source, destination):
horizontal = x.index(source[0]) == x.index(
destination[0]) and y.index(source[1]) != y.index(destination[1])
vertical = x.index(source[0]) != x.index(destination[0]) and y.index(
source[1]) == y.index(destination[1])
return horizontal or vertical
def can_move(self, source, destination):
x_distance = abs(x.index(source[0]) - x.index(destination[0]))
y_distance = abs(y.index(source[1]) - y.index(destination[1]))
return x_distance in [0, 1] and y_distance in [
0, 1
] and x_distance + y_distance != 0
def can_move(self, _from, to):
self.moved = True
x_distance = abs(x.index(_from[0]) - x.index(to[0]))
y_distance = abs(y.index(_from[1]) - y.index(to[1]))
return bool(x_distance in [0, 1] and y_distance in [0, 1]
and x_distance + y_distance != 0)
def can_move(self, _from, to):
self.moved = True
x_distance = abs(x.index(_from[0]) - x.index(to[0]))
y_distance = abs(y.index(_from[1]) - y.index(to[1]))
return x_distance in [1, 2] and y_distance in [
1, 2
] and x_distance != y_distance
def can_move(self, _from, to):
self.moved = True
horizontal = x.index(_from[0]) == x.index(
to[0]) and y.index(_from[1]) != y.index(to[1])
vertical = x.index(_from[0]) != x.index(to[0]) and y.index(
_from[1]) == y.index(to[1])
return bool(horizontal or vertical)
def can_move(self, _from, to):
self.moved = True
if (self.color == 'white' and x.index(_from[0]) == x.index(to[0])
and y.index(to[1]) - y.index(_from[1]) == 1):
return True
return (self.color == 'black' and x.index(_from[0]) == x.index(to[0])
and y.index(to[1]) - y.index(_from[1]) == -1)
def __move_castling(self, _from, to):
y_to = to[1]
x_rook = 'a'
x_rook_to = 'd'
if x.index(_from[0]) - x.index(to[0]) == -2:
x_rook = 'h'
x_rook_to = 'f'
self.squares[to], self.squares[x_rook_to + y_to] = self.squares[_from], self.squares[x_rook + y_to]
self.squares[_from], self.squares[x_rook + y_to] = None, None
def can_move(self, source, destination):
if self.color == 'white' and x.index(source[0]) == x.index(destination[0]):
ordinary_move = y.index(destination[1]) - y.index(source[1]) == 1
two_square_move = not self.moved and y.index(destination[1]) - y.index(source[1]) == 2
return ordinary_move or two_square_move
if self.color == 'black' and x.index(source[0]) == x.index(destination[0]):
ordinary_move = y.index(destination[1]) - y.index(source[1]) == -1
two_square_move = not self.moved and y.index(destination[1]) - y.index(source[1]) == -2
return ordinary_move or two_square_move
return False
def __move_castling(self, _from, to):
y_to = to[1]
x_rook = 'a'
x_rook_to = 'd'
if x.index(_from[0]) - x.index(to[0]) == -2:
x_rook = 'h'
x_rook_to = 'f'
self.squares[to], self.squares[
x_rook_to + y_to] = self.squares[_from], self.squares[x_rook +
y_to]
self.squares[_from], self.squares[x_rook + y_to] = None, None
def __move_castling(self, source, destination):
y_destination = destination[1]
x_rook = 'a'
x_rook_to = 'd'
if x.index(source[0]) - x.index(destination[0]) == -2:
x_rook = 'h'
x_rook_to = 'f'
self.__squares[destination], self.__squares[x_rook_to + y_destination] = \
self.get_piece(source), self.get_piece(x_rook + y_destination)
self.__squares[source], self.__squares[x_rook + y_destination] = None, None
self.get_piece(destination).moved = True
self.get_piece(x_rook_to + y_destination).moved = True
def can_move(self, source, destination):
if self.color == 'white' and x.index(source[0]) == x.index(
destination[0]):
ordinary_move = y.index(destination[1]) - y.index(source[1]) == 1
two_square_move = not self.moved and y.index(
destination[1]) - y.index(source[1]) == 2
return ordinary_move or two_square_move
if self.color == 'black' and x.index(source[0]) == x.index(
destination[0]):
ordinary_move = y.index(destination[1]) - y.index(source[1]) == -1
two_square_move = not self.moved and y.index(
destination[1]) - y.index(source[1]) == -2
return ordinary_move or two_square_move
return False
def can_move(self, _from, to):
self.moved = True
# move as a Rook {{
horizontal = x.index(_from[0]) == x.index(
to[0]) and y.index(_from[1]) != y.index(to[1])
vertical = x.index(_from[0]) != x.index(to[0]) and y.index(
_from[1]) == y.index(to[1])
if horizontal or vertical:
return True
# }}
# move as a Bishop {{
return abs(x.index(_from[0]) -
x.index(to[0])) == abs(y.index(to[1]) - y.index(_from[1]))
def can_move_diagonally(self, source, destination):
return abs(x.index(source[0]) - x.index(destination[0])) == abs(y.index(destination[1]) - y.index(source[1]))
def can_move(self, source, destination):
x_distance = abs(x.index(source[0]) - x.index(destination[0]))
y_distance = abs(y.index(source[1]) - y.index(destination[1]))
return x_distance in [1, 2] and y_distance in [1, 2] and x_distance != y_distance
def __is_valid_pawn_move(self, _from, to):
if not self.squares[_from].moved:
return (x.index(_from[0]) == x.index(to[0])
and abs(y.index(to[1]) - y.index(_from[1])) == 2)
return False
def can_move_diagonally(self, source, destination):
return abs(x.index(source[0]) - x.index(destination[0])) == abs(
y.index(destination[1]) - y.index(source[1]))
def can_move(self, _from, to):
self.moved = True
return abs(x.index(_from[0]) -
x.index(to[0])) == abs(y.index(to[1]) - y.index(_from[1]))
def can_move_vertically_or_horizontally(self, source, destination):
horizontal = x.index(source[0]) == x.index(destination[0]) and y.index(source[1]) != y.index(destination[1])
vertical = x.index(source[0]) != x.index(destination[0]) and y.index(source[1]) == y.index(destination[1])
return horizontal or vertical
def __is_valid_pawn_move(self, _from, to):
if not self.squares[_from].moved:
return (x.index(_from[0]) == x.index(to[0]) and
abs(y.index(to[1]) - y.index(_from[1])) == 2)
return False