13_5.rb

class Dragon
  def initialize name
    @name = name
    @asleep = false
    @stuff_in_belly     = 10 # He is full
    @stuff_in_intestine =  0 # He doesn't need to go

    puts "#{@name} is born."
  end

  def feed
    puts "You feed #{@name}"
    @stuff_in_belly = 10
    passage_of_time
  end

  def walk
    puts "You walk #{@name}"
    @stuff_in_intestine = 0
    passage_of_time
  end

  def put_to_bed
    puts "You put #{@name} to bed."
    @asleep = true
    3.times do
      if @asleep
        passage_of_time
      end
      if @asleep
        puts "#{@name} snores, filling the room with smoke."
      end
    end
    if @asleep
      @asleep = false
      puts "#{@name} wakes up slowly."
    end
  end

  def toss
    puts "You toss #{@name} up into the air."
    puts 'He giggles, which singes your eyebrows.'
    passage_of_time
  end

  def rock
    puts "You rock #{@name} gently."
    @asleep = true
    puts 'He briefly dozes off...'
    passage_of_time
    if @asleep
      @asleep = false
    end
  end

  private
  # "private" means that the methods defined here are
  # methods internal to the object. (You can feed your
  # dragon, but you can't ask him whether he's hungry.)
  def hungry?
    # Method names can end with a "?".
    # Usually we do this only if the method
    # returns true or false like below.
    @stuff_in_belly <= 2
  end

  def poopy?
    @stuff_in_intestine >= 8
  end

  def passage_of_time
    if @stuff_in_belly > 0
      # Move food from belly to intestine
      @stuff_in_belly     = @stuff_in_belly     - 1
      @stuff_in_intestine = @stuff_in_intestine + 1
    else # Our dragon is starving!
      if @asleep
        @asleep = false
        puts 'He wakes up suddenly!'
      end
      puts "#{@name} is starving! In desparation, he ate YOU!"
      exit # This quits the program
    end

    if @stuff_in_intestine >= 10
      @stuff_in_intestine = 0
      puts "Whoops! #{@name} had an accident..."
    end

    if hungry?
      if @asleep
        @asleep = false
        puts 'He wakes up suddenly!'
      end
      puts "#{@name}'s stomach grumbles..."
    end

    if poopy?
      if @asleep
        @asleep = false
        puts 'He Wakes up suddenly!'
      end
      puts "#{@name} does the potty dance..."
    end
  end

end
pet = Dragon.new 'Hitch'
pet.feed
pet.toss
pet.walk
pet.put_to_bed
pet.rock
pet.put_to_bed
pet.put_to_bed
pet.put_to_bed
pet.put_to_bed