builder pattern

реализованы классы строющие лабиринты

novikovsd/maze.py

@@ -49,8 +49,54 @@ class Maze:
         return neighbors
 
 class MazeBuilder(ABC):
+    @abstractmethod
+    def build_from_file(self, filename: str) -> Maze:
+        pass
 
 class TextFileMazeBuilder(MazeBuilder):
+    def build_from_file(self, filename: str) -> Maze:
+        with open(filename, 'r', encoding='utf-8') as f:
+            lines = [line.rstrip('\n') for line in f.readlines()]
+
+        if not lines:
+            raise ValueError("Файл пуст")
+
+        height = len(lines)
+        width = max(len(line) for line in lines)
+        maze = Maze(width, height)
+
+        start_cell = None
+        exit_cell = None
+
+        for y, line in enumerate(lines):
+            for x, ch in enumerate(line):
+                is_wall = (ch == '#')
+                cell = Cell(x, y, is_wall)
+                if ch == 'S':
+                    cell.is_start = True
+                    start_cell = cell
+                elif ch == 'E':
+                    cell.is_exit = True
+                    exit_cell = cell
+                maze.set_cell(x, y, cell)
+
+        if start_cell is None or exit_cell is None:
+            for y in range(height):
+                for x in range(width):
+                    cell = maze.get_cell(x, y)
+                    if cell and cell.is_start:
+                        start_cell = cell
+                    if cell and cell.is_exit:
+                        exit_cell = cell
+
+        if start_cell is None:
+            raise ValueError("Нет стартовой клетки (S)")
+        if exit_cell is None:
+            raise ValueError("Нет выходной клетки (E)")
+
+        maze.start = start_cell
+        maze.exit = exit_cell
+        return maze
 
 class PathFindingStrategy(ABC):