[Swarm-Support] Heatbug code question

[Crile Doscher]

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