P5: OO Inheritance.rb

class Vehicle

  attr_reader :color, :speed, :status

  def initialize(args)
    @color = args[:color]
    @speed = :slow
    @status = :stopped
  end
  def drive
    @status = :driving
  end
  def brake
    @status = :stopped    
  end
  def needs_gas?
    return [true,true,false].sample
  end

end

class Car < Vehicle
  @@WHEELS = 4

  attr_reader :engine, :body_type

  def initialize(args)
    super
    @engine = args[:engine]
    @body_type = args[:body_type]
  end

  def speed
    @status = :fast
  end

  def rev_engine
    "VROOM VROOM"
  end

end


class Bus < Vehicle
  @@WHEELS = 6
  attr_reader :passengers
  def initialize(args)
    super
    @num_seats = args[:num_seats]
    @fare = args[:fare]
    @passengers=[]
  end

  def drive 
    return self.brake if stop_requested?
    @status = :driving
  end

  def admit_passenger(passenger,money)
    money >= @fare ? @passengers << passenger : "Get off the bus!"
  end
  
  def stop_requested?
    return [true,false].sample
  end
end


class Motorbike < Vehicle
  @@WHEELS = 2

  def speed
    @speed = :fast
  end

  def weave_through_traffic
    @status = :driving_like_a_crazy_person
  end
end

################################################

commuter = Bus.new(num_seats: 20, fare: 2)

p commuter.stop_requested?
p commuter.admit_passenger("Jake", 2)

honda = Motorbike.new(color: "red")

p honda.color

p honda.speed

p honda.status

p honda.weave_through_traffic

maserati = Car.new(engine: "V8",body_type: "Coupe",color: "black",)

puts "maserati below"
p maserati.status
p maserati.speed
p maserati.drive
p maserati.brake
p maserati.status
p maserati.engine
p maserati.body_type
p maserati.rev_engine