[starlogo-users] Need help

[Eric Klopfer]

I am not quite sure I understand.  Perhaps you could attach your  
project.

But in TNG each turtle actually runs the entirety of its code before  
the next agent gets to run theirs.  so an agent could have code that  
says forward 1, smell 1, back 1, and it will detect another agent  
that is just over 1 space ahead of it.  That other agent won't run  
its code until this agent is done.  That is a change from the older  
StarLogo and should make doing these kinds of things a bit easier.

Eric

On Jul 11, 2007, at 12:41 PM, Zara Phang wrote:

> Hi Eric
>
> Thanks for your prompt and helpful reply!
>
> Unfortunately I am only dealing with one breed of agent, so when I  
> move forward, *all* agents move forward, hence there will never be  
> something there for them to smell!
>
> I was thinking that I might be able to do this if I could get them  
> moving forwards one at a time, but as I am having them stay there  
> if there is not an agent in front of them (I am doing a very simple  
> traffic simulation), if there is an agent directly behind the first  
> agent that checks and then moves, the agent would not know the  
> first agent was there before and will just move into the space.
>
> On Wed, 11 Jul 2007, Eric Klopfer wrote:
>
>> Check out the way that the sonics smell the marios in the sonics  
>> vs. mario demo game that comes with TNG.  Essentially each round  
>> the sonics move one step in each direction and smell the number of  
>> marios that they see there.
>>
>> You could do something similar where you had the agent move only  
>> forward and smell and then move back.
>>
>> We'll have more advanced processing of smell in an upcoming release.
>>
>> Eric
>>
>> On Jul 11, 2007, at 11:33 AM, Zara Phang wrote:
>>
>>> Hello everyone!
>>> I'm trying to do some cellular automata on StarLogo and was  
>>> wondering if someone could help me with something I think should  
>>> be quite simple but I haven't managed to do yet!
>>> I've basically got agents lined up on an x axis randomly placed  
>>> by y, so maybe like this:
>>> xxx x x     x xxx    x xxx
>>> and I want to figure out whether each agent has another agent in  
>>> front of them.  I'm currently using the 'smell' feature under  
>>> 'Other Agents' with a radius of 1, which tells me that whether  
>>> there is an agent either side of it, so I think I am halfway  
>>> there!  I have tried the 'smell with' with a radius of 1 and a  
>>> condition of (xcor of who > xcor) but this doesn't seem to work.
>>> Does anybody have any ideas what is going wrong and how I can fix  
>>> this?
>>> Many thanks,
>>> Zara
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>>> starlogo-users at media.mit.edu
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>>