def is_connection_from(self, from_position: TilePosition, direction):
to_position = from_position.get_position_in_direction(direction)
from_tile, to_tile = self.get_tile_at(from_position), self.get_tile_at(
to_position)
return from_tile.is_accessible_from(direction) \
and to_tile is not None \
and to_tile.is_accessible_from(opposite(direction))
def get_accessible_position_tree(cls,
board,
root: TilePosition,
max_depth: int = MAX_DEPTH,
depth: int = 0,
parent=None):
if depth == max_depth:
return cls(root, parent, dict())
tree_by_direction = dict()
for direction in DIRECTIONS:
to_pos = root.get_position_in_direction(direction)
if to_pos != parent and board.is_connection_from(root, direction):
child_node = cls.get_accessible_position_tree(
board, to_pos, max_depth, depth + 1, root)
tree_by_direction[direction] = child_node
return cls(root, None, tree_by_direction)
def get_tile(self, direction, pos: TilePosition) -> RotatedTile:
pos = pos.get_position_in_direction(direction)
return self.get_tile_at(pos)