1. module FuelTank
  2. def fill_tank(level)
  3. self.fuel_tank = level
  4. end
  6. def fuel_level
  7. self.fuel_tank
  8. end
  10. protected
  11. attr_accessor :fuel_tank
  12. end
  14. class Car
  15. include FuelTank
  16. attr_reader :current_rpm
  18. @@instances =0
  20. def self.instances
  21. @@instances
  22. end
  24. def self.debug(log)
  25. puts "!!!DEBUG: #{log }!!!!!"
  26. end
  28. debug "start interface"
  30. def initialize
  31. @current_rpm = 0
  32. @@instances += 1
  33. end
  35. def start_engine
  36. start_engine! if engine_stopped?
  37. end
  39. def engine_stopped?
  40. current_rpm.zero?
  41. end
  43. debug " end interface"
  45. protected
  47. attr_writer :current_rpm
  49. def initial_rpm
  50. 700
  51. end
  53. def start_engine!
  54. self.current_rpm =initial_rpm
  55. end
  57. #остановить двигатель
  58. end
  60. class Bike
  61. include FuelTank
  62. end