corridor.rb

#models/corridor.rb
class Corridor
  attr_accessor :lights
  attr_accessor :air_conditioners

  def initialize
    @lights = [Instrument.new(STATUS_OFF, DEFAULT_UNITS_LIGHTS)]
    @air_conditioners = [Instrument.new(STATUS_OFF, DEFAULT_UNITS_AC)]
    @movement = false
  end

  def current_status
    status = ''
    @lights.each_with_index do |light, i|
      status << "    Light #{i+1}: #{light.status}" + "\n"
    end
    @air_conditioners.each_with_index do |ac, i|
      status << "    AC #{i+1}: #{ac.status}" + "\n"
    end
    status
  end

  def move
    @movement = true
  end

  def unmove
    @movement = false
  end

  def was_moving?
    @movement
  end

  def power_consumption
    pc = 0
    pc += @lights.inject(0) {|r, light| r + light.power_consumption}
    pc += @air_conditioners.inject(0) {|r, ac| r + ac.power_consumption}
    pc
  end
end