14.6. MovieClip Sub-Subclasses

Just like a regular class, a MovieClip subclass can itself be extended by another subclass. When a parent class is defined outside of its corresponding movie clip symbol (as in the very first Ball example in this chapter), its child subclass can be defined by:

• Setting the child's prototype to a new parent instance

• Registering the child class with its symbol via Object.registerClass( )