Re: [Swarm-Support] Button Problem

[Paul E Johnson]

Dear Patrick

This is an interesting problem and I have not done this, but I believe 
something like this would work.

I think you need a separate class that might be called "ProbeMaker". 
The ProbeMaker would be created and be informed about all the grids.

Create a ProbeMaker object, and write an "makeProbeAtX:Y:" method in 
there, then have it sort though the grids to find whichever object you 
think you need.

the button would be set like

 [worldRaster setButton: ButtonRight
                Client: probeMaker
 Message: M(makeProbeAtX:Y:)];


luo pi wrote:
> Hi! 
> With Swarm, I want to carry out the following problem:
> there are three kinds of individual---red, yellow and
> green, each 50, scattering uniformly in the space at
> the beginning.  In the simulation process, the number
> of red individual decreases, yellow one increases, and
> each kind individual will aggregate together.
>
> First, I let three individuals live in a world, and
> use the same worldRaster, but I find that the
> increased yellow one can not be seen in worldRaster,
> whereas in the yellowList, the number of yellow one
> increased. However, red one is normal. 
>
> Then I let them live in three worlds, and also use the
> same worldRaster, the above problem can be solved, but
> I get a new trouble, looking at the following source
> code:
>
> individualredDisplay = [Object2dDisplay createBegin:
> self];
>   [individualredDisplay setDisplayWidget:
> worldRaster];
>   …         
>   individualredDisplay = [inindividual1Display
> createEnd];
>  
> [worldRaster setButton: ButtonRight
>                Client: individualredDisplay
> Message: M(makeProbeAtX:Y:)]; 
>
> individualyellowDisplay = [Object2dDisplay
> createBegin: self];
>   [individualyellowDisplay setDisplayWidget:
> worldRaster];
>   …         
>   individualyellowDisplay = [inindividualyellowDisplay
> createEnd];
>            
>   [worldRaster setButton: ButtonRight
>                Client: individualyellowDisplay
> Message: M(makeProbeAtX:Y:)];
> …
> I find that with mouse right button in the
> worldRaster, only the information of individualyellow
> can be gotten, but individual1 can not. If delete the
> setButton command of individualyellow, individualred
> can. 
>
> Some persons tell me a few days ago, let them use the
> different wolrdRaster. I try it, it is okey! Whereas I
> can see three worldRasters in the screen, which
> possess their own individual. However, I hope them
> stay in the same worldRster.
>
> This problem bothers me a lot. Maybe someone can give
> me a whole solution or some advices. 
>
> Thank you very much!
>                                                       
>                          Patrick.L 



--
Paul E. Johnson                       email: address@hidden
Dept. of Political Science            http://lark.cc.ku.edu/~pauljohn
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Lawrence, Kansas 66044-3177           FAX: (785) 864-5700