75 lines
2.7 KiB
Python
75 lines
2.7 KiB
Python
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# maze_solver/builders.py
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from abc import ABC, abstractmethod
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from models import Cell, Maze
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class MazeBuilder(ABC):
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"""Интерфейс строителя лабиринта."""
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@abstractmethod
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def buildFromFile(self, filename: str) -> Maze:
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"""Строит объект Maze из файла."""
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pass
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class TextFileMazeBuilder(MazeBuilder):
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"""Строитель для текстового формата: ■ стена, ' ' проход, S старт, E выход."""
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# Поддерживаемые символы стен
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WALL_SYMBOLS = {'#', '■', '█', '▓', '▒', '░'}
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def __init__(self, require_exit: bool = True):
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"""
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Args:
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require_exit: Если False, позволяет создавать лабиринты без выхода
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"""
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self.require_exit = require_exit
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def buildFromFile(self, filename: str) -> Maze:
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with open(filename, 'r', encoding='utf-8') as f:
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lines = f.readlines()
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# Убираем символы новой строки и пустые строки в конце файла
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cleaned_lines = [line.rstrip('\n') for line in lines if line.strip() != '']
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if not cleaned_lines:
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raise ValueError("Файл лабиринта пуст")
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height = len(cleaned_lines)
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width = len(cleaned_lines[0])
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grid = []
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start_cell = None
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exit_cell = None
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for y, line in enumerate(cleaned_lines):
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row = []
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if len(line) != width:
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raise ValueError(
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f"Строка {y} имеет длину {len(line)}, ожидалось {width}. "
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f"Лабиринт должен быть прямоугольным."
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)
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for x, char in enumerate(line):
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is_wall = char in self.WALL_SYMBOLS
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cell = Cell(x, y, is_wall)
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if char == 'S':
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cell.isStart = True
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start_cell = cell
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elif char == 'E':
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cell.isExit = True
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exit_cell = cell
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row.append(cell)
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grid.append(row)
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if not start_cell:
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raise ValueError("В лабиринте не найдена стартовая позиция (S)")
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if self.require_exit and not exit_cell:
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raise ValueError("В лабиринте не найдена выходная позиция (E)")
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maze = Maze(width, height, grid)
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maze.start = start_cell
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maze.exit = exit_cell
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return maze
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