104 lines
3.9 KiB
Python
104 lines
3.9 KiB
Python
import heapq # dla utrzymania fringe
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from classes import node, minesweeper, system
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import time
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class BFS:
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window: system.Window
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agent: minesweeper.Minesweeper
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node: node.Node
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def __init__(self, agent, window):
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self.agent = agent
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self.window = window
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def successor(self, current_position):
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new_nodes = []
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neighbours_list = self.agent.sensor(current_position[0], current_position[1])
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#print(neighbours_list[0])
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#print(neighbours_list[1])
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#print(neighbours_list[2])
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if neighbours_list[1][0] not in ['wall', 'cliff_south', 'cliff_east', 'cliff_north', 'cliff_west']:
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new_nodes.append([current_position[0] - 1, current_position[1]])
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if neighbours_list[2][1] not in ['wall', 'cliff_south', 'cliff_east', 'cliff_north', 'cliff_west']:
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new_nodes.append([current_position[0], current_position[1] + 1])
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if neighbours_list[1][2] not in ['wall', 'cliff_south', 'cliff_east', 'cliff_north', 'cliff_west']:
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new_nodes.append([current_position[0] + 1, current_position[1]])
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if neighbours_list[0][1] not in ['wall', 'cliff_south', 'cliff_east', 'cliff_north', 'cliff_west']:
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new_nodes.append([current_position[0],current_position[1] - 1])
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return new_nodes
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# fringe = struktura danych przeszowyjąca wierchowki do odwiedzenia
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# explored = lista odwiedzonych stanow
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# position_at_beginning = stan poczatkowy
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# succ = funkcja nastempnika
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# goaltest = test spewnienia celu
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def graphsearch(self, fringe, explored, succ, goaltest):
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self.window.pause(True)
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positiont_at_beginning = [self.agent.position_x, self.agent.position_y, self.agent.rotation_degrees] # x, y, gdzie_patczy
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final_action_list = []
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root = node.Node(None, None, positiont_at_beginning[:2]) # parent, action, position
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counter = 0
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heapq.heappush(fringe, (counter, root))
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visited_position = []
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while len(fringe) != 0:
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flag = True
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if len(fringe) == 0:
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return False
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break
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tmp_node = heapq.heappop(fringe) # node
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#print(f'my parent is {tmp_node[1].get_parent()}')
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tmp_node_position = tmp_node[1].get_position()
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#print(f'Position of our node {tmp_node_position[:2]}')
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visited_position.append(tmp_node_position[:2])
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#print(f'visited position: {visited_position}')
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if tmp_node_position[:2] == goaltest:
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#print(' we find node')
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# print(visited_position)
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#print(fringe)
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#break
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while tmp_node[1].get_parent() is not None:
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#print('sdfhdfg')
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#print(tmp_node[1].get_parent()[1].get_position())
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final_action_list.append(tmp_node[1].get_action())
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tmp_node = tmp_node[1].get_parent()
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final_action_list.reverse()
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print(final_action_list)
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self.window.pause(False)
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return final_action_list
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explored.append(tmp_node)
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neighbours_list_of_our_node = self.successor(tmp_node_position[:2])
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#print(neighbours_list_of_our_node)
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for node_ in neighbours_list_of_our_node:
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# jesli pozucja wezla nie jest w fringe i nie jest w explored
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if [node_[0], node_[1]] not in visited_position and node_[0] >= 0 and node_[1] >=0:
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counter += 1
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#print([node_[0], node_[1]])
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x = node.Node(tmp_node, None, [node_[0], node_[1]]) # action
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heapq.heappush(fringe, (counter, x))
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self.window.draw_search([self.agent.position_x, self.agent.position_y], [node_[0], node_[1]])
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#time.sleep(0.01)
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