Created
October 22, 2014 15:29
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constants
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module Drive | |
def speed_up( num ) | |
self.speed += num | |
puts "you accelerate by #{num} and are now travelling at #{speed} mph." | |
end | |
def slow_down( num ) | |
self.speed -= num | |
puts "You decrease your speed by #{num} and are now travelling at #{speed}" | |
end | |
def stop | |
puts "stop and park" | |
end | |
end | |
module Floatable | |
def floats | |
puts "#boats float!" | |
end | |
end | |
class Vehicle | |
attr_accessor :year, :colour, :model, :speed | |
@@num_of_vehicles = 0 | |
def initialize(y,c,m) | |
@year = y | |
@colour = c | |
@model = m | |
@speed = 0 | |
@@num_of_vehicles += 1 | |
end | |
def self.mpg( miles, gallon ) | |
puts "Your car gets #{miles / gallon}" | |
end | |
def self.number_of_vehicles | |
@@num_of_vehicles | |
end | |
def change_vehicle( y,c,m ) | |
self.year = y | |
self.colour = c | |
self.model = m | |
end | |
include Drive | |
def age | |
current_date = Time.new | |
the_year = current_date.year | |
num_of_years = the_year - self.year.to_i | |
puts "Your #{VEHICLE_TYPE} is #{num_of_years} old" | |
end | |
end | |
class MyCar < Vehicle | |
VEHICLE_TYPE = "car" | |
# @@num_of_cars = 0 | |
# def self.total_num_of_cars | |
# @@num_of_cars | |
# end | |
# def my_car_info | |
# puts "You drive a #{colour} #{year} #{model}. The vehicle type is #{VEHICLE_TYPE}" | |
# end | |
def to_s | |
puts "#{model} #{VEHICLE_TYPE}s rock!" | |
end | |
end | |
class MyTruck < Vehicle | |
VEHICLE_TYPE = "truck" | |
def to_s | |
puts "#{model} #{VEHICLE_TYPE}s rock!" | |
end | |
end | |
class MyBoat < Vehicle | |
include Floatable | |
VEHICLE_TYPE = "boat" | |
def to_s | |
puts "#{model} #{VEHICLE_TYPE}s rock!" | |
end | |
end | |
car1 = MyCar.new( "2000", "black", "Ford Modeo" ) | |
car2 = MyCar.new( "2000", "red", "Vauxhall Corsa" ) | |
lorry1 = MyTruck.new( "1970", "blue", "Bedford" ) | |
lorry2 = MyTruck.new( "2010", "black", "Skania" ) | |
car3 = MyCar.new( "2001", "black", "VW Polo GTI" ) | |
boat1 = MyBoat.new( "1987", "yellow", "Rubber dingy" ) | |
puts Vehicle.number_of_vehicles | |
puts car1 | |
puts car2 | |
puts car3 | |
puts lorry1 | |
puts lorry2 | |
puts boat1 | |
boat1.floats | |
p MyCar.ancestors | |
p MyBoat.ancestors | |
p MyTruck.ancestors | |
puts car1 | |
car1.age | |
car2.age | |
car3.age | |
lorry1.age | |
lorry2.age | |
boat1.age |
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