26 lines
690 B
Python
26 lines
690 B
Python
from Strategies.strat import PathFindingStrategy
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from Strategies.path import restore
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from collections import deque
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class BFS(PathFindingStrategy):
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def findPath(self, maze, start, exit):
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if exit is None:
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return [], 0
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queue = deque([start])
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visited = {start}
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parent = {}
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while queue:
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current = queue.popleft()
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if current == exit:
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break
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for n in maze.getNeighbors(current):
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if n not in visited:
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visited.add(n)
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parent[n] = current
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queue.append(n)
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return restore(parent, start, exit), len(visited) |