Re: [Swarm-Support] Heatbug code question

[Paul Johnson]

I agree with the spirit of your question. It can be done either way.  I 
think we should consider re-designing Heatbugs to have the agents make 
that calculation. It would be more in tune with the agent-based philosophy.

It does not happen in this model, but there is a potential benefit to 
having the HeatSpace make the calculation.  There is a major slow-down 
if each agent searches each cell finding what's best.  In some models, 
you can have the space calculate various values and give them to the 
agents and if you write the model "just so", it avoids repeated 
calculations.  That's the idea behind this code:

http://lark.cc.ku.edu/~pauljohn/Swarm/MySwarmCode/Protest/activists-20020412.tar.gz

and this:

http://lark.cc.ku.edu/~pauljohn/Swarm/MySwarmCode/Schelling/schelling2-2.0-Swarm-2.1.141.tar.gz


Crile Doscher wrote:
> Hi there,
>    This question relates to the logic of the Heatbug code, specifically why a method is 
> implemented where it is.  If that sounds like you, read on!
>    I'm putting together a simulation of braided rivers where water objects (originally 
> called drops until I realised that that name was special...) flow over a river bed and find 
> their way by moving in the direction of the steepest slope.  I've been paying attention to 
> how Heatbug implements bug movement and wonder why it is that the actual method 
> that looks at the eight cell neighbourhood around a particular cell (findExtremeType) is 
> implemented in HeatSpace.m rather than in Heatbug.m. The Heatbug then determines 
> which cell it will move to, but HeatSpace does the work of figuring out which cell would 
> be the best to move to.  This is part of the process of getting my head around Objective 
> C.  Any thoughts?  Thanks -
> Crile
>
> Dr Crile Doscher
> Natural Resources Engineering
> Lincoln University
> New Zealand 
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--
Paul E. Johnson                       email: address@hidden
Dept. of Political Science            http://lark.cc.ku.edu/~pauljohn
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