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| class Vehicle | |
| @@INFLATED_WHEELS = 4 | |
| def initialize(args) | |
| @color = args[:color] | |
| @wheels_needed = 4 | |
| end | |
| def drive | |
| @status = :driving | |
| end | |
| def flat_tire? | |
| if @@INFLATED_WHEELS < @wheels_needed | |
| puts "Uh oh you have a flat, you are now: " | |
| @status = :stopped | |
| else | |
| "Your tires are good to go" | |
| end | |
| end | |
| def brake | |
| @status = :stopped | |
| end | |
| end | |
| class Car < Vehicle | |
| def needs_gas? | |
| return [true,true,false].sample | |
| end | |
| def speeding_ticket(speed_limit, your_speed) | |
| if your_speed > speed_limit | |
| p "You just got a speeding ticket!!!!" | |
| end | |
| end | |
| end | |
| class Bus < Vehicle | |
| @@INFLATED_WHEELS = [4,4,4,4,4,4,3].sample | |
| attr_reader :passengers | |
| def initialize(args) | |
| @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) | |
| @passengers << passenger if money > @fare | |
| end | |
| def stop_requested? | |
| return [true,false].sample | |
| end | |
| def needs_gas? | |
| return [true,true,true,false].sample | |
| end | |
| end | |
| class Motorbike < Vehicle | |
| @@INFLATED_WHEELS = [2,2,2,2,2,2,2,1].sample | |
| def initialize (args) | |
| @wheels_needed = 2 | |
| end | |
| def drive | |
| @speed = :fast | |
| end | |
| def set_num_wheels?(arg) | |
| @@INFLATED_WHEELS = arg | |
| end | |
| def brake | |
| @status = :stopped | |
| end | |
| def needs_gas? | |
| return [true,false,false,false].sample | |
| end | |
| def weave_through_traffic | |
| @status = :driving_like_a_crazy_person | |
| end | |
| end | |
| ######### TESTS ############# | |
| motorcycle = Motorbike.new({:color => "blue"}) | |
| puts motorcycle.drive == :fast | |
| puts motorcycle.weave_through_traffic == :driving_like_a_crazy_person | |
| puts motorcycle.brake == :stopped | |
| puts motorcycle.drive == :fast | |
| puts motorcycle.flat_tire? | |
| bus = Bus.new({:color => "purple", :num_seats => 30, :fare => 5}) | |
| puts bus.admit_passenger("Chantal", 9) == ["Chantal"] | |
| puts bus.admit_passenger("Bill", 5) == nil | |
| puts bus.brake == :stopped | |
| puts bus.brake == :stopped | |
| car = Car.new({:color => "yellow"}) | |
| puts car.brake == :stopped | |
| puts car.drive == :driving | |
| puts car.speeding_ticket(40, 100) == "You just got a speeding ticket!!!!" |
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