Class Based Inheritance

Practice: Custom Colors and Sounds

1. Move all common properties in your vehicles to a new Vehicle class.
2. Create an instance of each vehicle.
3. Define a different value for each vehicle's properties.
4. Create a Drive() method in the Vehicle class.
5. Override the Drive() method in all the other vehicle classes. Include the vehicle's color in the message (i.e. "The blue Ram drives past. RRrrrrrummbbble!").
6. Create a Turn(string direction) mathod, and a Stop() method on Vehicle. Define a basic implementation of each.
7. Override all three of those methods on some of the vehicles. For example, the Stop() method for a plane would be to output the message "The white Cessna rolls to a stop after rolling a mile down the runway."
8. Make your vehicle instances perform all three behaviors.

Interfaces

Practice: More Gary's Wholesale Garage

this exercise will build on the C# project you build in the previous chapter.

Here are some types of vehicles from Gary's Wholesale Garage.

1. Scooter
2. Car
3. Jetski
4. RV
5. Motorcycle
6. Boat
7. Truck
8. Light aircraft

Now, all of these types of things have some attributes and behaviors in common.

• They all have an engine
• They all carry one, or more, passenger
• They all move
• They all accelerate in any direction

There are other attributes and behaviors that some specific kinds of these vehicles share, but others don't.

• Some use gas
• Some are electric
• Some use a propeller to move
• Some have wheels
• Some have doors
• Some use a jet to move

Gas Fueling Problem

In your project you should have classes that resemble the code below.

public class Zero : Vehicle // Electric motorcycle
{
    public double BatteryKWh { get; set; }

    public void ChargeBattery()
    {
        // method definition omitted
    }
}

public class Cessna : Vehicle // Propellor light aircraft
{
    public double FuelCapacity { get; set; }

    public void RefuelTank()
    {
        // method definition omitted
    }
}

public class Tesla : Vehicle // Electric car
{
    public double BatteryKWh { get; set; }

    public void ChargeBattery()
    {
        // method definition omitted
    }
}

public class Ram : Vehicle // Gas powered truck
{
    public double FuelCapacity { get; set; }

    public void RefuelTank()
    {
        // method definition omitted
    }
}

Your challenge is to replace your Main method with the following code and make the appropriate changes and additions to your project in order to make this Main method work.

HINT: An example addition to your code might be an IElectricVehicle interface.

namespace Garage
{
    class Program
    {
        static void Main (string[] args)
        {
            Zero fxs = new Zero();
            Zero fx = new Zero();
            Tesla modelS = new Tesla();

            List<???> electricVehicles = new List<???>() {
                fx, fxs, modelS
            };

            Console.WriteLine("Electric Vehicles");
            foreach(??? ev in electricVehicles)
            {
                Console.WriteLine($"{ev.CurrentChargePercentage}");
            }

            foreach(??? ev in electricVehicles)
            {
                // This should charge the vehicle to 100%
                ev.ChargeBattery();
            }

            foreach(??? ev in electricVehicles)
            {
                Console.WriteLine($"{ev.CurrentChargePercentage}");
            }

            /***********************************************/

            Ram ram = new Ram ();
            Cessna cessna150 = new Cessna ();

            List<???> gasVehicles = new List<???>() {
                ram, cessna150
            };

            Console.WriteLine("Gas Vehicles");
            foreach(??? gv in gasVehicles)
            {
                Console.WriteLine($"{gv.CurrentTankPercentage}");
            }

            foreach(??? gv in gasVehicles)
            {
                // This should completely refuel the gas tank
                gv.RefuelTank();
            }

            foreach(??? gv in gasVehicles)
            {
                Console.WriteLine($"{gv.CurrentTankPercentage}");
            }
        }
    }
}