varProbing with inherited variables

[glen e. p. ropella]

> hi 
> can any one out there tell me how I can get a probe to display the
> variable contents of an object that inherits some of its variables
> from its parent class?
> 
> e.g.
> 
> @implementation superclass : SwarmObject{
> int a;
> int b;
> etc ...
> }
> 
> @implementation subclass : superclass {
> int c
> }
> 
> and I want to be able to create a varProbe for 'subclass' which will allow
> me to change its values for vars a, b and c etc....
> 
>  methods to create a custom probMap for 'subclass' don't work....
> e.g
>   [probeMap addProbe: 
> [probeLibrary getProbeForVariable: "a" inClass: [self class]]];
>    [probeMap addProbe: 
> [probeLibrary getProbeForVariable: "b" inClass: [self class]]];
> 
> Can anyone help?
> 
> Matt Hare


Matt,
Here's what I did using the tutorial app v03:

In PplModelSwarm.m, I placed the following:

--------------------------------cut here--------------------------------
-buildObjects {
[...]

  // build the ppl
  for (inci = 0; inci < numPpl; inci++){
[...]

    if (inci == 0) {
      pprobeMap = [EmptyProbeMap createBegin: [self getZone]];
      [pprobeMap setProbedClass: [person class]];
      pprobeMap = [pprobeMap createEnd];

      // variables defined in the Person.h object
      [pprobeMap addProbe: [probeLibrary getProbeForVariable: "room"
                                         inClass: [person class]]];
      [pprobeMap addProbe: [probeLibrary getProbeForVariable: "party"
                                         inClass: [person class]]];
      [pprobeMap addProbe: [probeLibrary getProbeForVariable: "name"
                                         inClass: [person class]]];
      [pprobeMap addProbe: [probeLibrary getProbeForVariable: "stillhere"
                                         inClass: [person class]]];
      [pprobeMap addProbe: [probeLibrary getProbeForVariable: "listOfFriends"
                                         inClass: [person class]]];
      [pprobeMap addProbe: [probeLibrary getProbeForVariable: "myColor"
                                         inClass: [person class]]];

      // variables defined in the superclass of the Person object
      [pprobeMap addProbe: [probeLibrary getProbeForVariable: "x"
                                         inClass: [Agent2d class]]];
      [pprobeMap addProbe: [probeLibrary getProbeForVariable: "y"
                                         inClass: [Agent2d class]]];
      [probeLibrary setProbeMap: pprobeMap For: [person class]];
      [probeDisplayManager createProbeDisplayFor: person];

    }
}
----------------------------------cut here--------------------------

And that worked just fine.  I guess the secret is to 
get the "class" of the superclass of the object in question.

glen