Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!wuarchive!uunet!crdgw1!sunstar!taylorp
From: taylorp@sunstar.crd.ge.com (Patrick D. Taylor)
Newsgroups: comp.windows.interviews
Subject: components of World
Message-ID: <19378@crdgw1.crd.ge.com>
Date: 8 May 91 18:23:19 GMT
Sender: news@crdgw1.crd.ge.com
Reply-To: taylorp@sunstar.crd.ge.com (Patrick D. Taylor)
Organization: GE Corporate Research & Development, Schenectady, NY
Lines: 29

I have a few questions about Scene and World in InterViews 2.6.

I want to get a list of components which have been inserted into the world.
According to the man page for Interactor, the GetComponents() member
function should return a list of the interactor's components if the
interactor is a Scene.  Scene does not implement GetComponents(), nor does
World, which is a Scene.  So World::GetComponents() is actually
Interactor::GetComponents(), which does nothing.  How do I get the
components of the World scene?

Also, the man page for Scene specifies that "when a scene is deleted, it
should delete all its component interactors.  The World scene does not do
this.  Why not?

What I want to be able to do is insert an arbitrary number of interactors
into a world.  Each interactor has a quit button which removes it from the
world.  When all of the interactors have been removed, the program should
terminate.  Thus, my main event loop would be something like:

	do {
	  Read(event);
	  event.target->Handle(event);
	  n = number of components left in world;
	} while (n > 0);

Any suggestions?

---
Pat Taylor	(taylorp@crd.ge.com)