Re: [Swarm-Support] creating an object from a Class other than ModelSwarm.

[Paul Johnson]

"self" can't be a Zone unless you are in a Swarm.

Replace self in creaeBegin with [self getZone] and the problem will go away.

I assure you that it is technically possible to create objects in any 
kind of class.

IT used to be in the old days that we always used [self getZone], but 
when Swarm and GUISwarm became Zones, there was no need to get the zone 
anymore.  SO self works well enough.  It is one of the "streamlining" 
efforts that occurred right before the first Swarmfest I ever went to, 
which I think was in 1998.

For questions like this, I bet that tutorial I've been encouraging 
people to test out will help you.  You find "swarmapps-obj" in here
http://lark.cc.ku.edu/~pauljohn/Swarm.

pj

Derek Farren wrote:
> Hello everybody.
>
> > From my experienece with swarm, it seems like you can´t create an 
> > object in 
>
> a class other than ModelSwarm (and ObserverSwarm, of course).
>
> For example, if I have the ClassA.h and ClassB.h (none of them 
> ModelSwarm.h) and I have in one of ClassA´s method  aClassB = [ClassB 
> createBegin: self]; sentence, the bash window gives me the following error:
>
> *** event raised for error: InvalidArgument
> *** function: _i_Object_s__doesNotRecognize_(), file: 
> /src/Swarm/swarm/src/defobj/DefObject.m, line: 825
> Agent does not recognize allocIVars:
> *** execution terminating due to error
> /src/Swarm/swarm/src/defobj/Symbol.m:187 -[Error(c) _raiseEvent:]
>
> This doesn´t happen if I create objects in the ModelSwarm class.
>
> Am I right?
>
> If so, how can I create objects in classes other than ModelSwarm?
>
> Thanks
>
> Derek Farren
> _______________________________________________
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--
Paul E. Johnson                       email: address@hidden
Dept. of Political Science            http://lark.cc.ku.edu/~pauljohn
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