Ruby：在类之间使用变量

我正在做一个简短的基于文本的游戏，作为一个额外的学分练习，它基于我迄今为止所学的Ruby，我在让类读取和写入彼此之间的变量方面遇到了困难。我已经阅读了大量的书籍，并寻求关于如何做到这一点的澄清，但我运气不太好。我尝试过使用

@

实例变量和

attr\u accessible

，但我想不出来。以下是我目前的代码：

class Game
  attr_accessor :room_count

  def initialize
    @room_count = 0
  end

  def play
    while true
      puts "\n--------------------------------------------------"

      if @room_count == 0
        go_to = Entrance.new()
        go_to.start
      elsif @room_count == 1
        go_to = FirstRoom.new()
        go_to.start
      elsif @room_count == 2
        go_to = SecondRoom.new()
        go_to.start
      elsif @room_count == 3
        go_to = ThirdRoom.new()
        go_to.start
      end
    end
  end

end

class Entrance

  def start
    puts "You are at the entrance."
    @room_count += 1
  end

end

class FirstRoom

  def start
    puts "You are at the first room."
    @room_count += 1
  end

end

class SecondRoom

  def start
    puts "You are at the second room."
    @room_count += 1
  end

end

class ThirdRoom

  def start
    puts "You are at the third room. You have reached the end of the game."
    Process.exit()
  end

end

game = Game.new()
game.play

---

我想让不同的

房间

类更改

@Room\u count

变量，以便

游戏

类知道下一个去哪个房间。我还试图在不实现类继承的情况下实现这一点。谢谢

谢谢，通过房间传递游戏本身是有效的。这一切对我来说都很有意义。你不需要@game而不是房间里的game#close吗？

class Room
  def initialize(game)
    @game = game
    @game.room_count += 1
  end

  def close
    @game.room_count -= 1
  end
end

class Game
  attr_accessor :room_count

  def initialize
    @room_count = 0
  end

  def new_room
    Room.new self
  end
end

game = Game.new
game.room_count # => 0
room = game.new_room
game.room_count # => 1
room.close
game.room_count # => 0