def calc_path(self,
destination,
destination_in_building=False,
check_only=False,
source=None):
"""Calculates a path to destination
@param destination: a destination supported by pathfinding
@param destination_in_building: bool, whether destination is in a building.
this makes the unit "enter the building"
@param check_only: if True the path isn't saved
@param source: use this as source of movement instead of self.unit.position
@return: True iff movement is possible or the path if check_only==True"""
# calculate our source
if source is None:
source = self._get_position()
# call algorithm
# to use a different pathfinding code, just change the following line
path = FindPath()(source, destination, self._get_path_nodes(),
self._get_blocked_coords(), self.move_diagonal,
self.make_target_walkable)
if path is None:
return False
if not check_only:
# prepare movement
self.move_on_path(path, source, destination_in_building)
else:
return path
return True
def get_path_on_roads(cls, island, source, destination):
"""Returns a path that runs only on roads.
@param island: island to search path on
@param source, destination: Point or anything supported by FindPath
@return: list of tuples or None in case no path is found"""
return FindPath()(source, destination, island.path_nodes.road_nodes)