public World()
{
// This should be familiar at this point - we're just creating an instance of a class.
VirtualPet junior = new VirtualPet("Junior", ConsoleColor.White, "Hampster", 2);
//junior.Greet();
// This is new! Dragon inherits all the public and protected fields and methods of
// VirtualPet.
Dragon bahumat = new Dragon("Bahumat", ConsoleColor.Red, "Lots of gold", 20);
// This is a method declared in VirtualPet. Dragon can use it because it inherits from
// VirtualPet.
//bahumat.Greet();
//bahumat.Fly();
Giraffe geoffrey = new Giraffe("Geoffrey", ConsoleColor.DarkYellow, 2000, 5.5);
// Inheritance is an "is a" relationship. Geoffry the Giraffe "is a" VirtualPet. The present
// that we are giving Geoffrey is a "has a" relationship and is often called composition.
// Geoffrey owns the present. Other examples you might see: a player "has a" item, a
// superhero "has a" superpower (or superpowers).
Present geoffreyPresent = new Present("Box of Lego", 1, "Medium");
geoffrey.TakePresent(geoffreyPresent);
//geoffrey.Greet();
// Polymorphism in action! You can store a Dragon in a VirtualPet variable.
VirtualPet smaug = new Dragon("Smaug", ConsoleColor.DarkRed, "Dwarven gold", 40);
//smaug.Greet();
//smaug.DrawAvatar();
// All classes inherit from Object, which provides ToString().
//Console.WriteLine(smaug.ToString());
// Polymorphism in action again! We can loop over all our animals and run methods
// that they all share in common because they inherit from VirtualPet.
VirtualPet[] pets = { junior, bahumat, geoffrey, smaug };
for (int i = 0; i < pets.Length; i++)
{
VirtualPet pet = pets[i];
pet.Greet();
pet.DrawAvatar();
WriteLine();
}
WriteLine("Press any key to exit...");
ReadKey(true);
}
public World()
{
// This should be familiar at this point - we're just creating an instance of
// a class.
VirtualPet junior = new VirtualPet("Junior", 6, "Hampster", 2);
junior.Greet();
WriteLine();
// This is new! Dragon inherits all the public and protected fields and methods
// of VirtualPet.
Dragon bahumat = new Dragon("Bahumat", 400, "Lots of gold", 20);
bahumat.Greet(); // This is a method declared in VirtualPet.
bahumat.Fly();
WriteLine("Press any key to exit...");
ReadKey(true);
}