реализован поиск A*

ProninVV/task-2-oop/AStarStrategy.py

@@ -0,0 +1,41 @@
+from Maze import Cell, Maze
+from strategy import PathFindingStrategy
+
+
+class AStarStrategy(PathFindingStrategy):
+    def findPath(maze, start, exit):
+
+        def heuristik(cell):
+            return abs(cell.x - exit.x) + abs(cell.y - exit.y)
+
+        if not start or not exit:
+            return []
+
+        parents = {start: None}
+
+        queue = [start]
+
+        while len(queue) != 0:
+            best_cell = queue[0]
+            for cell in queue:
+                if heuristik(cell) < heuristik(best_cell):
+                    best_cell = cell
+
+            u = best_cell
+            queue.remove(u)
+
+            if u == exit:
+                path = []
+                current = exit
+                while current is not None:
+                    path.append(current)
+                    current = parents[current]
+                path.reverse()
+                return path
+
+            childs = maze.getNeighbors(u)
+            for child in childs:
+                if child not in parents:
+                    parents[child] = u
+                    queue.append(child)
+        return []