dry_for_good.rb

class ConfigFile
  FILE_PATH = 'path/to/config.cfg'
  
  def write_player_state(state)
    File.open(FILE_PATH, 'w') do |f|
      f.write('player_state: #{state}')
    end
  end

  def read_player_state
    IO.read(FILE_PATH)
  end
end
  
class Game
  def save_player_state
    config_file = ConfigFile.new
    config_file.write_player_state('near_window')
  end
end

class Player
  def read_state
    config_file = ConfigFile.new
    @state = config_file.read_player_state
  end
end