def bft(self, starting_vertex):
"""
Print each vertex in breadth-first order
beginning from starting_vertex.
"""
q = Queue()
q.en(starting_vertex)
visited = set()
while q.size() > 0:
curr = q.de()
if curr not in visited:
visited.add(curr)
neighbors = self.get_neighbors(curr)
for neighbor in neighbors:
if neighbor not in visited:
q.en(neighbor)
for x in visited:
print(x)
def bfs(index, room_id, next_room_id):
q = Queue()
visited = set()
path_to_room = []
q.en([room_id])
while q.size() > 0:
curr_path = q.de()
curr = curr_path[-1]
if room_id != next_room_id and (curr == next_room_id
or next_room_id in curr_path):
del curr_path[0]
path_to_room = reversed(curr_path)
break
if curr not in visited:
visited.add(curr)
neighbors = world.rooms[curr].get_exits_ids()
for neighbor in neighbors:
path_copy = curr_path[:]
path_copy.append(neighbor)
q.en(path_copy)
for path in path_to_room:
traversal_order.insert(index + 1, path)
def bfs(self, starting_vertex, destination_vertex):
"""
Return a list containing the shortest path from
starting_vertex to destination_vertex in
breath-first order.
"""
q = Queue()
visited = set()
path = [starting_vertex]
q.en(path)
while q.size() > 0:
curr_path = q.de()
curr = curr_path[-1]
if curr == destination_vertex:
return curr_path
if curr not in visited:
visited.add(curr)
neighbors = self.get_neighbors(curr)
for neighbor in neighbors:
path_copy = curr_path[:]
path_copy.append(neighbor)
q.en(path_copy)