Question about senseCreaturesProperty 
Submitted by dagush on Mon, 2013-09-30 09:37

Hi all,

My name is Gustavo and I am trying to do some simple experiments with Framsticks. One of them implies "sensing" each individual in a population individually, and performing some actions based on the values I measure. I've observed that senseCreaturesProperty() does the job, but only at the population level, not at the creature level, and I couldn't find in the API any function/example for doing that.

Trying to find out what the behavior is, I sampled values at different distances from a creature, and got that Framsticks is using a formula like 1/(ax^2+bx+c), but the values for a, b and c are weird to me, and I cannot find their relationship with the original creature's energy.

So, please, I would appreciate it VERY MUCH if someone could tell me either how to use the API to sample each individual in a population, or how this formula is computed, so I can implement my own version of senseCreaturesProperty() with the scripting language.

Thanks a lot!!!

dagush.-

Forums: 
Users
Maciej Komosinski's picture

Submitted by Maciej Komosinski on Mon, 2013-09-30 13:55

Dear Gustavo,

It depends on how you want to achieve your goal and what is your goal precisely. Do you want to design a neuron that senses individual creatures, or just write a piece of a script? If the latter, then you can simply iterate through Populations[0][i] where i is the index (number) of a creature. Such iteration gives you access to all Creature objects in population #0, and you can do pretty much anything with these objects (access their coordinates, energy level, etc.). Let me know if this helped!

Submitted by dagush on Mon, 2013-09-30 22:53

Hi,

Thanks for the answer!!! But, actually, it is more the first option: I want a neuron that has "limited" senses, so it measures some creatures depending on some conditions I still am in the process of defining, and acts one way or the other (like eating a prey but escaping a predator, or something like that).
Thanks for the quick answer!!!

gus.-

Szymon Ulatowski's picture

Submitted by Szymon Ulatowski on Tue, 2013-10-01 04:06

You could try signals: this approach allows you to define completely different signal channels for predators and prey, and/or apply additional filtering based on how well the sender and receiver are tuned to each other. See the tutorial and scripts/fireflies.show for an example on how to use signals.

Submitted by dagush on Tue, 2013-10-01 14:21

Great!!
I'll try this way!
Thanks!!

gus.-