gistfile1.rb

class Remote

  def initialize(door)
    @door = door
  end

  def press_button
    puts "Pressing the remote control button..."
    if @door.is_open
      @door.close
    else
      @door.open
      sleep = Thread.new do
        sleep 2
        @door.close
      end
    end
    while sleep.alive?
      sleep 0.1
    end
  end

end

gistfile2.rb

require 'dog_door.rb'
require 'remote.rb'

door = DogDoor.new

remote = Remote.new(door)

puts "Fido barks to go outside..."

remote.press_button

puts "Fido has gone outside..."


puts "Fido's all done..."


puts "Fido's back inside"

gistfile3.rb

class DogDoor
  attr_reader :is_open

  def initialize
    @is_open = false
  end

  def open
    puts "The dog door opens.\n\n"
    @is_open = true
  end

  def close
    puts "The dog door closes.\n\n"
    @is_open = false
  end
  
end