// Use this for initialization
void Start()
{
// Let's illustrate inheritance with the default constructors.
Debug.Log("Creating the fruit");
Fruit myFruit = new Fruit();
Debug.Log("Creating the apple");
Apple myApple = new Apple();
// // Call the methods of the Fruit class
// myFruit.SayHello();
// myFruit.Chop();
// // Call the methods of the Apple class.
// // Notice how Class Apple has access to all of the public methods of Class Fruit.
// myApple.SayHello();
// myApple.Chop();
// Call the methods of the Apple class.
// Notice how class Apple has access to all of the public methods of Class Fruit.
Debug.Log("Creating the Fruit");
myFruit = new Fruit("yellow");
Debug.Log("Creating the apple");
myApple = new Apple("green");
// Call the methods of the Fruit class
myFruit.SayHello();
myFruit.Chop();
// Call the methods of the Apple class.
// Notice how class Apple has access to all of the public methods of class Fruit.
myApple.SayHello();
myApple.Chop();
}
void Start()
{
Apple myApple = new Apple();
myApple.SayHello();
myApple.Chop();
// Upcasting.
Fruit myFruit = new Apple();
// Even the type is Fruit, the functions in
// the Fruit class are virtual, so the Apple
// class functions will be called.
myFruit.SayHello();
myApple.Chop();
}
// Start is called before the first frame update
void Start()
{
Debug.Log("Creating the fruit");
Fruit myFruit = new Fruit();
Debug.Log("Creating the apple");
Apple myApple = new Apple();
myFruit.SayHello();
myFruit.Chop();
myApple.SayHello();
myApple.Chop();
Debug.Log("Creating the fruit");
myFruit = new Fruit("yellow");
Debug.Log("Creating the apple");
myApple = new Apple("green");
myFruit.SayHello();
myFruit.Chop();
myApple.SayHello();
myApple.Chop();
}
void Start()
{
Debug.Log("~~~~~~~~~ myApple ~~~~~~~~~~~~~~~~~~~~~~~~");
Apple myApple = new Apple();
//Notice that the Apple version of the methods
//override the fruit versions. Also notice that
//since the Apple versions call the Fruit version with
//the "base" keyword, both are called.
myApple.SayHello();
myApple.Chop();
Debug.Log("~~~~~~~~ myFruit ~~~~~~~~~~~~~~~~~~~~~~~~~");
//Overriding is also useful in a polymorphic situation.
//Since the methods of the Fruit class are "virtual" and
//the methods of the Apple class are "override", when we
//upcast an Apple into a Fruit, the Apple version of the
//Methods are used.
Fruit myFruit = new Apple();
myFruit.SayHello();
myFruit.Chop();
Debug.Log("~~~~~~~~~ myFruit 2 ~~~~~~~~~~~~~~~~~~~~~~~~");
Fruit myFruit2 = new Fruit();
myFruit2.SayHello();
myFruit2.Chop();
}
// Use this for initialization
void Start()
{
//we made fruit a public class so we can create fruit from any script in the project
Fruit myFruit = new Fruit("lemon", "sweet", "brown", 2);
Apple myApple = new Apple();
//these two chop functions will behhave deifferently the apple chop has been identified as a new fuction that will
//deviate from the parent
myFruit.Chop();
myApple.Chop();
//this will downgrade my apple to be a fruit
//this is callied variable casting
Fruit faleApple = (Fruit)myApple;
}
void Start()
{
Apple myApple = new Apple();
// Apple versions of the methods override the fruit version.
// Since Apple's versions call the Fruit version with the "base" keyword, both are called.
myApple.SayHello();
myApple.Chop();
// Overriding is also useful in a polymorphic situation.
// Since the methods of the Fruit class are "virtual" and the methods of the Apple class are "override",
// when we upcast an Apple into a Fruit, teh Apple version of the Methods are used.
Fruit myFruit = new Apple();
myFruit.SayHello();
myFruit.Chop();
}
void Start()
{
// This is called Upcasting.
Fruit myFruit = new Apple();
// Since the type is "Fruit",
// the function will be called from the
// parent class.
myFruit.SayHello();
myFruit.Chop();
// Class re-specified for
// using functions in child class.
// This is called Downcasting.
Apple myApple = (Apple)myFruit;
myApple.SayHello();
myApple.Chop();
}
void Start()
{
Apple myApple = new Apple();
//请注意，Apple 版本的方法
//将覆盖 Fruit 版本。另外请注意，
//由于 Apple 版本使用“base”关键字
//来调用 Fruit 版本，因此两者都被调用。
myApple.SayHello();
myApple.Chop();
//“覆盖”在多态情况下也很有用。
//由于 Fruit 类的方法是“虚”的，
//而 Apple 类的方法是“覆盖”的，因此
//当我们将 Apple 向上转换为 Fruit 时，
//将使用 Apple 版本的方法。
Fruit myFruit = new Apple();
myFruit.SayHello();
myFruit.Chop();
}
void Start()
{
//请注意，这里的变量“myFruit”的类型是
//Fruit，但是被分配了对 Apple 的引用。这是
//由于多态而起作用的。由于 Apple 是 Fruit，
//因此这样是可行的。虽然 Apple 引用存储
//在 Fruit 变量中，但只能像 Fruit 一样使用
Fruit myFruit = new Apple();
myFruit.SayHello();
myFruit.Chop();
//这称为向下转换。Fruit 类型的变量“myFruit”
//实际上包含对 Apple 的引用。因此，
//可以安全地将它转换回 Apple 变量。这使得
//它可以像 Apple 一样使用，而在以前只能像 Fruit
//一样使用。
Apple myApple = (Apple)myFruit;
myApple.SayHello();
myApple.Chop();
}
void Start()
{
//Notice here how the variable "myFruit" is of type
//Fruit but is being assigned a reference to an Apple. This
//works because of Polymorphism. Since an Apple is a Fruit,
//this works just fine. While the Apple reference is stored
//in a Fruit variable, it can only be used like a Fruit
Fruit myFruit = new Apple();
myFruit.SayHello();
myFruit.Chop();
//This is called downcasting. The variable "myFruit" which is
//of type Fruit, actually contains a reference to an Apple. Therefore,
//it can safely be turned back into an Apple variable. This allows
//it to be used like an Apple, where before it could only be used
//like a Fruit.
Apple myApple = (Apple)myFruit;
myApple.SayHello();
myApple.Chop();
}
void Start()
{
//让我们用默认构造函数
//来说明继承。
Debug.Log("Creating the fruit");
Fruit myFruit = new Fruit();
Debug.Log("Creating the apple");
Apple myApple = new Apple();
//调用 Fruit 类的方法。
myFruit.SayHello();
myFruit.Chop();
//调用 Apple 类的方法。
//注意 Apple 类如何访问
//Fruit 类的所有公共方法。
myApple.SayHello();
myApple.Chop();
//现在，让我们用读取字符串的
//构造函数来说明继承。
Debug.Log("Creating the fruit");
myFruit = new Fruit("yellow");
Debug.Log("Creating the apple");
myApple = new Apple("green");
//调用 Fruit 类的方法。
myFruit.SayHello();
myFruit.Chop();
//调用 Apple 类的方法。
//注意 Apple 类如何访问
//Fruit 类的所有公共方法。
myApple.SayHello();
myApple.Chop();
}
private static void Inheritance()
{
//Let's illustrate inheritance with the
//default constructors.
Debug.Log("Creating the fruit");
Fruit myFruit = new Fruit();
Debug.Log("Creating the apple");
Apple myApple = new Apple();
//Call the methods of the Fruit class.
myFruit.SayHello();
myFruit.Chop();
//Call the methods of the Apple class.
//Notice how class Apple has access to all
//of the public methods of class Fruit.
myApple.SayHello();
myApple.Chop();
//Now let's illustrate inheritance with the
//constructors that read in a string.
Debug.Log("Creating the fruit");
myFruit = new Fruit("yellow");
Debug.Log("Creating the apple");
myApple = new Apple("green");
//Call the methods of the Fruit class.
myFruit.SayHello();
myFruit.Chop();
//Call the methods of the Apple class.
//Notice how class Apple has access to all
//of the public methods of class Fruit.
myApple.SayHello();
myApple.Chop();
}
void Start()
{
/*
* Notice here how the variable "myFruit" is of type
* Fruit but is being assigned a reference to an Apple. This
* works because of Polymorphism. Since an Apple is a Fruit,
* this works just fine. While the Apple reference is stored
* in a Fruit variable, it can only be used like a Fruit
*/
Fruit_polymorphism myFruit = new Apple();
myFruit.SayHello();
myFruit.Chop();
/*
* This is called downcasting. The variable "myFruit" which is
* of type Fruit, actually contains a reference to an Apple. Therefore,
* it can safely be turned back into an Apple variable. This allows
* it to be used like an Apple, where before it could only be used
* like a Fruit.
*/
Apple myApple = (Apple)myFruit;
myApple.SayHello();
myApple.Chop();
// Notice how each Humanoid variable contains
// a reference to a different class in the
// inheritance hierarchy, yet each of them
// calls SayHello() method.
// Apple myRipApple = new RipeApple();
Fruit_polymorphism myRipApple = new RipeApple();
myRipApple.SayHello();
}
void Start()
{
// Let's illustrate inheritance with the default constructors
Debug.Log("Creating the fruit");
Fruit myFruit = new Fruit();
Debug.Log("Creating the apple");
Apple myApple = new Apple();
// Call the methods of the Fruit class
myFruit.SayHello();
myFruit.Chop();
// Call the methods of the Apple class
// Notice how class Apple has access to all
// of all the public methods of class Fruit
myApple.SayHello();
myApple.Chop();
// Illustrate inheritance with constructors
Debug.Log("Creating the fruit");
myFruit = new Fruit("yellow");
Debug.Log("Creating the apple");
myApple = new Apple("green");
// Call the methods of the Fruit class.
myFruit.SayHello();
myFruit.Chop();
// Call the methods of the Apple class
// Notice how class Apple has access to all
// of the public methods of class Fruit
myApple.SayHello();
myApple.Chop();
// Notice here how the variable "myFruit" is of type
// Fruit but is being assigned a reference to an Apple. This
// works because of Polymorphism. Since an Apple is a Fruit,
// this works just fine. While the Apple reference is stored
// in a Fruit variable, it can only be used like a Fruit
Fruit myFruit = new Apple();
myFruit.SayHello();
myFruit.Chop();
// This is called downcasting. The variable "myFruit" which is
// of type Fruit, actually contains a reference to an Apple. Therefore,
// it can safely be turned back into an Apple variable. This allows
// it to be used like an Apple, where before it could only be used
// like a Fruit
Apple myApple = (Apple)myFruit;
myApple.SayHello();
myApple.Chop();
// Overriding is also useful in a polymorphic situation
// Since the methods of the Fruit class are "virtual" and
// the methods of the Apple class are "override", when we
// upcast an Apple into a Fruit, the Apple version of the
// methods is used
Fruit myFruit = new Apple();
myFruit.SayHello();
myFruit.Chop();
}