[2] Добавлены наблюдатель и команда
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@ -268,3 +268,192 @@ class MazeSolver:
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)
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return path, stats
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class Observer:
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def update(self, event):
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pass
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class ConsoleView(Observer):
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def render(self, maze, player_position=None, path=None):
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"""отрисовка"""
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os.system('cls' if os.name == 'nt' else 'clear')
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path_set = set(path) if path else set()
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for y in range(maze.height):
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for x in range(maze.width):
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cell = maze.getCell(x, y)
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if player_position and cell == player_position:
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print('P', end='')
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elif cell == maze.start:
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print('S', end='')
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elif cell == maze.exit:
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print('E', end='')
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elif cell in path_set:
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print('.', end='')
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elif cell.isWall:
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print('#', end='')
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else:
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print(' ', end='')
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print()
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def update(self, event):
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if event['type'] == 'path_found':
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print(f"длина пути {len(event['path'])}")
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self.render(event['maze'], path=event['path'])
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elif event['type'] == 'move':
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print(f"шаг {event['step']}")
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self.render(event['maze'], event['player'], event['path'])
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elif event['type'] == 'maze_loaded':
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print("перегрузка")
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self.render(event['maze'])
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class ObservableMazeSolver:
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def __init__(self, maze):
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self.maze = maze
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self.strategy = None
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self.observers = []
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def attach(self, observer):
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self.observers.append(observer)
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def notify(self, event):
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for observer in self.observers:
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observer.update(event)
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def setStrategy(self, strategy):
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self.strategy = strategy
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def solve(self):
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if self.strategy is None:
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raise ValueError("")
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path = self.strategy.findPath(self.maze, self.maze.start, self.maze.exit)
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self.notify({
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'type': 'path_found',
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'maze': self.maze,
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'path': path
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})
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return path
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class Player:
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def __init__(self, start_cell):
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self.currentCell = start_cell
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self.previousCell = None
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def moveTo(self, cell):
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self.previousCell = self.currentCell
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self.currentCell = cell
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def undoMove(self):
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if self.previousCell:
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self.currentCell, self.previousCell = self.previousCell, None
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return True
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return False
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class Command:
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def execute(self):
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pass
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def undo(self):
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pass
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class MoveCommand(Command):
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def __init__(self, player, direction, maze):
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self.player = player
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self.dx, self.dy = direction
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self.maze = maze
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self.executed = False
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def execute(self):
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new_x = self.player.currentCell.x + self.dx
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new_y = self.player.currentCell.y + self.dy
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new_cell = self.maze.getCell(new_x, new_y)
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if new_cell and new_cell.isPassable():
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self.player.moveTo(new_cell)
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self.executed = True
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return True
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return False
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def undo(self):
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if self.executed:
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self.player.undoMove()
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self.executed = False
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return True
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return False
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def clear_console():
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os.system('cls' if os.name == 'nt' else 'clear')
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def render_maze_with_player(maze, player, path=None):
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path_set = set(path) if path else set()
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for y in range(maze.height):
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for x in range(maze.width):
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cell = maze.getCell(x, y)
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if cell == player.currentCell:
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print('P', end='')
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elif cell == maze.start:
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print('S', end='')
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elif cell == maze.exit:
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print('E', end='')
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elif cell in path_set:
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print('.', end='')
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elif cell.isWall:
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print('#', end='')
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else:
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print(' ', end='')
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print()
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def run_game(maze, path=None):
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player = Player(maze.start)
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history = []
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directions = {
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'w': (0, -1),
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's': (0, 1),
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'a': (-1, 0),
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'd': (1, 0)
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}
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print(" W/A/S/D - движение, U - отмена, Q - выход")
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if path:
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print(f"мин путь {len(path)} шагов")
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while True:
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print()
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render_maze_with_player(maze, player, path)
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if player.currentCell == maze.exit:
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print("\n*** выход ***")
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break
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key = input("\n> ").lower()
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if key == 'q':
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print("выход из игры")
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break
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elif key == 'u':
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if history:
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cmd = history.pop()
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cmd.undo()
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print("отмена хода")
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else:
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print("нет ходов")
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elif key in directions:
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cmd = MoveCommand(player, directions[key], maze)
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if cmd.execute():
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history.append(cmd)
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else:
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print("стена")
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else:
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print("неизвестно")
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