ActionScript for Flash MX: The Definitive Guide, Second Edition

This is the Title of the Book, eMatter Edition

Copyright © 2007 O’Reilly & Associates, Inc. All rights reserved.

Summary

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389

// Initialize instance before calling Ball constructor. (Otherwise,

// Ball will delete the params object before we get a chance to use it.)

this.setSignature(this.params.signature);

// Invoke Ball class constructor.

super( );

// No need to delete params object, because the Ball constructor does that.

};

/*

* Set Ball as Baseball's superclass.

*/

org.moock.Baseball.prototype = new org.moock.Ball( );

/*

* Associate the Library's baseballSymbol with the Baseball class

*/

Object.registerClass("baseballSymbol", org.moock.Baseball);

/*

* Instance Methods

*/

/*

* Method: Ball.setSignature( )

* Desc: Sets the ball's signature

*

* Params:

* newSig -The ball's new signature

*/

org.moock.Ball.prototype.setSignature = function (newSig) {

this.sig = newSig;

};

#endinitclip

Note that multiple #initclip blocks can share a single order position. For example,

if we create three subclasses of Ball, we can set all of their

#initclip order parame-

ters to 1. All that matters is that the Ball’s

#initclip order is lower than all its sub-

classes.

Summary

Over the course of this chapter, we’ve studied three related but distinct types of

MovieClip subclasses:

• A subclass defined outside of its Library symbol

• A subclass embedded in its Library symbol (inside an

#initclip directive)

• A component,