102 lines
2.6 KiB
Python
102 lines
2.6 KiB
Python
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from builders.maze_builder import MazeBuilder
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from core.cell import Cell
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from core.maze import Maze
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class TextFileMazeBuilder(MazeBuilder):
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def buildFromFile(self, filename):
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with open(filename, "r", encoding="utf-8") as source:
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raw_lines = [line.rstrip("\n") for line in source]
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if not raw_lines:
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raise ValueError("Maze file is empty")
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expected_width = len(raw_lines[0])
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blueprint = []
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start_cell = None
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exit_cell = None
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for y_index, raw in enumerate(raw_lines):
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if len(raw) != expected_width:
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raise ValueError(
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f"Broken maze shape at line {y_index + 1}"
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)
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row_pack = []
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for x_index, symbol in enumerate(raw):
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current = None
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if symbol == "#":
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current = Cell(
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x_index,
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y_index,
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isWall=True
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)
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elif symbol == " ":
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current = Cell(
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x_index,
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y_index
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)
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elif symbol == "S":
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if start_cell:
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raise ValueError(
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"Multiple start cells detected"
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)
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current = Cell(
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x_index,
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y_index,
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isStart=True
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)
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start_cell = current
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elif symbol == "E":
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if exit_cell:
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raise ValueError(
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"Multiple exit cells detected"
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)
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current = Cell(
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x_index,
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y_index,
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isExit=True
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)
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exit_cell = current
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else:
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raise ValueError(
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f"Unsupported symbol '{symbol}' "
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f"at ({x_index}, {y_index})"
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)
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row_pack.append(current)
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blueprint.append(row_pack)
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if start_cell is None:
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raise ValueError(
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"Start cell S not found"
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)
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if exit_cell is None:
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raise ValueError(
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"Exit cell E not found"
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)
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return Maze(
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blueprint,
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start_cell=start_cell,
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exit_cell=exit_cell
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)
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