AngelScript

Inheritance and polymorphism

AngelScript supports single inheritance, where a derived class inherits the properties and methods of its base class. Multiple inheritance is not supported, but polymorphism is supprted by implementing interfaces.

All the class methods are virtual, so it is not necessary to specify this manually. When a derived class overrides an implementation, it can extend the original implementation by specifically calling the base class' method using the scope resolution operator. When implementing the constructor for a derived class the constructor for the base class is called using the `super` keyword. If none of the base class' constructors is manually called, the compiler will automatically insert a call to the default constructor in the beginning. The base class' destructor will always be called after the derived class' destructor, so there is no need to manually do this.

      // A derived class
      class MyDerived : MyClass
      {
        // The default constructor
        MyDerived()
        {
          // Calling the non-default constructor of the base class
          super(10);

          b = 0;
        }

        // Overloading a virtual method
        void DoSomething()
        {
          // Call the base class' implementation
          MyClass::DoSomething();

          // Do something more
          b = a;
        }

        int b;
      }

Todo:
  Show how the polymorphism is used with cast behaviours