Cursor for wang_matrix.exe?

cursor.rb

module WangMatrix
  class Cursor

    attr_reader :traversed

    def initialize(maze:)
      @maze = maze
      @traversed = [maze.maze_start]
    end

    def adjacent()
      @maze.adjacent(@traversed.last)
    end

    def update(pos)
      # Some kind of validation here
      assert pos in adjacent()
      @traversed << pos
    end

    def finish?()
      @maze.finish?(@traversed.last)
    end
  end
end