P5: OO Inheritance.rb

class Vehicle
  def initialize(args)
    @color = args[:color]
    @wheels = args[:wheels]
    @gas_mileage = [true,false]
  end
  def drive
    @status = :driving
  end
  def brake
    @status = :stopped    
  end
  def needs_gas?
    return @gas_mileage.sample
  end
  def stunt  #3) get creative, add functionality to vehicle class, and subclass
    @status = :cruising
  end


end

class Car < Vehicle
  
  def initialize(args)
    super(args)
    @wheels = 4
    @gas_mileage = [true,true,false]
  end
end

class Bus < Vehicle
  attr_reader :passengers
  
  def initialize(args)
    super
    @num_seats = args[:num_seats]
    @fare = args[:fare]
    @passengers=[]
    @gas_mileage = [true,true,true,false]
  end
  
  def drive
    return self.brake if stop_requested?
    super
  end
 
  def admit_passenger(passenger,money)
    @passengers << passenger if money > @fare
  end
  
  def stop_requested?
    return [true,false].sample
  end

  def stunt
    return "You can't stunt in a bus"
  end
end


class Motorbike < Vehicle
  def initialize(args)
    super
    @wheels = 2
    @gas_mileage = [true,false,false,false] 
  end

  def drive
    super
    @speed = :fast
  end

  def weave_through_traffic
    @status = :driving_like_a_crazy_person
  end
end

p volvo = Car.new({color: :red})
p volvo.drive
p volvo.brake
p volvo.needs_gas?
p '*******'
p megabus = Bus.new({color: :purple, wheels: 12, num_seats: 60, fare: 25})
p megabus.drive
p megabus.admit_passenger("Ghostface", 30)
p megabus.brake
p megabus.stop_requested?
p megabus.needs_gas?
p megabus.drive
p megabus.drive
p megabus.drive
p megabus.drive
p megabus.drive
p '*******'
p ninja = Motorbike.new({color: :black})
p ninja.drive
p ninja.brake
p ninja.needs_gas?
p ninja.weave_through_traffic
p megabus.stunt
p volvo.stunt