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Subject: Re: newborn genetic deficiences (no IA, ;-) ) (more info)
From: Pierre Bommel (bommel@cirad.fr)
Date: Fri Mar 19 2004 - 16:51:44 CET
Bonjour Pierre-Marcel,
If I have well understood, you should have in your main "step:" method
(as Christophe said) :
step: t
"Evolution des Ressources"
super stepEntities: self thePlants.
"Evolution des Herbivores"
super stepDynPop: self theForagers.
"Evolution des Predateurs"
super stepDynPop: self thePredators
The stepDynPop method is as following :
The stepDynPop: aCollec
| newBorns repro |
newBorns := OrderedCollection new.
(Cormas mixt: aCollec)
do: [:anAgent |
repro := anAgent step.
repro notNil ifTrue: [newBorns add: repro]].
self update: aCollec with: newBorns
It means that you should keep the same name "step" as the general method
for Predator and Prey (as Christophe said again ! :o) ). Normally, this
should work, but do not forget to return the new born at the end of your
step method (.... ^newBorn)
Another way could be :
step: t
| newForagers newPredators |
"Evolution des Ressources"
self thePlants do: [:cell| cell step].
"Evolution des Herbivores"
newForagers := OrderedCollection new.
self theForagers do: [:f | newForagers add: f step].
"Evolution des Predateurs"
newPredators := OrderedCollection new.
self thePredators do: [:p | newPredators add: p step].
"removing the dead agents and adding the new borns to the
collections theForagers and thePredators"
self update: self theForagers with: newForagers.
self update: self thePredators with: newPredators.
In the next version, Cormas should propose an Entity-Collector that will
automatically update the collection of agents and others entities. This
version should be released in April...
Best regards,
Pierre
Pierre-Marcel GORAL a écrit :
> Last news: I manage to obtain new Foragers, cheating on the energy
> needed to reproduce, but they are as dumb as new Predators. I think
> it's due to the function "updateAgents", because when I see the
> implementation oh this, I only see lines about dead agents, and not
> about new ones! Maybe ther's another function for new lives!
> If you know how to do, please answer me!
> Thank you by advance!
>
> Cordialement,
>
> Pierre-Marcel GORAL
>
>
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