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vbBoid

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Submitted on: 9/26/1999
By: Richard Lowe 
Level: Not Given
User Rating: By 103 Users
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Users have accessed this code 7996 times.
 
 
     This program uses three simple rules for each BOID, which when applied in the correct proportion produce emergent flocking behaviour. This program is entirely based on the work of Craig Reynolds (http://htm.com/cwr/boid.htm). I developed this program after a debate with a c++ programmer, who said that VB wasn't up to the job. See what you think.
 
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Other User Comments
9/27/1999 7:05:00 AM:Richard Lowe
If you would like any further 
information....please mail me
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9/27/1999 7:17:00 AM:Bruce Reid
Excellent work! I'm also a huge Craig 
Reynolds fan.  I've been working on my 
own boids for a few months now and was 
having trouble with making Collision 
Detection work in a fast enough way.  
Hopefully your code will help me fill 
in some blanks.  Haven't looked at your 
code yet, but your EXE looks great!   
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9/27/1999 7:36:00 AM:Richard Lowe
Note : You can also add more obstacles 
by clicking in the picture !!!
I 
Should have mentioned that somewhere....
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9/27/1999 9:57:00 PM:Jeffrey Haluska
About 5 years ago I wrote a program in 
VB that
was very similiar to this. (I 
was 14)
In many ways this is 
superior.
I always had problems with 
the boids 
flying through complex 
objects too.
Keep up the great work.
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9/28/1999 6:52:00 AM:l_marvin
"I did this when I was 14" or "It was 
my Year 1 work" is, not only 
irrelevant, but a bit distasteful; 
would people refrain from doing that.
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10/3/1999 7:51:00 PM:Herman
A marvelous piece indeed.  To me it has 
the kind of beauty of Kevino's 3D 
Mathematical Plot(beyond my grasp 
though, as I come from a different 
profession).
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10/4/1999 3:02:00 PM:JOe
It Rocks!!!!!!!!!!
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10/5/1999 7:16:00 AM:Jeffrey Haluska
Well I did make this in the past and if 
you dont like me saying so then dont 
read my comments.  And i didnt say it 
before because i was being nice, but 
mine was actually much better than this 
one!
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10/5/1999 8:53:00 AM:Richard Lowe
Jeffrey. I did not take offense to your 
comment, in fact I was quite impressed 
that you did this at the age of 14.
I 
would be interested to see your version 
- please post it on this site
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10/5/1999 11:40:00 AM:Eric Miles
The correct web address for Craigs work 
is
http://hmt.com/cwr/boid.htm
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10/5/1999 11:43:00 AM:Eric Miles
whoops I 
meant:
http://hmt.com/cwr/boids.html
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10/5/1999 6:45:00 PM:Andrew
Wow!  Although I don't know much about 
boids, I am still very impressed with 
what I am seeing.  This is very cool.  
Great work!!!
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10/5/1999 6:54:00 PM:Andrew
After visiting Craigs' web site on 
boids, I have a better understanding of 
boids.  All I can say is that this is 
probably beyond my skills at this time; 
however, I am motivated to research 
more on this.  I think this is really 
great stuff!
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10/6/1999 11:08:00 AM:l_marvin
(1) Re: Jeffrey's comment - This time 
it is not distasting, it has become 
disgusting now. (2) What make Richard's 
posting outstanding is that it has 
refresh input, hence it has live, 
forget about technical aspect for a 
moment (look at the many repeated old 
topics every day on this site).  3. 
Richard: Would you please take a look 
of "Clear" button; a minor point 
though, seems not working?
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10/6/1999 2:07:00 PM:Richard Lowe
Thanks for all the great comments 
guys.
The Clear button does work - but 
only when the boids are running - a 
minor bug I know....
Please mail me 
with any other bugs, suggestions....
I 
intend to implement some of the other 
grouping behaviours discussed by Craig 
reynolds (seek, avoid, dock, etc) in 
the next version.
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10/6/1999 2:30:00 PM:Paul
Way Cool... Richard! And I to would 
like to see Jeffey's code! 5 years ago 
---right????
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10/6/1999 5:10:00 PM:Bruce Johnson
Very very Nice.
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10/6/1999 5:36:00 PM:Jonathan Feucht
This is great! GREAT!!!
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10/6/1999 7:37:00 PM:Andrew
Hi Richard,
I think I have found 
something interesting in this boids 
simulation.  This is what I have 
discovered:
When I place more than a 
dozen circular obstacles in a way 
similar to a bowling pins placement 
tightly with only a little room for the 
boids (30 of them) to manuver, some of 
boids actually would go through the 
obstacles close to the curve area of 
the obstacles (basically the boids 
would go inside the obstacle a little 
bit and come out quickly)!  Is this 
suppose to happen or is this because I 
have not given them enough room to 
avoid obstacles?  If you can give me 
some hints, that would be great.  
Thanks.
Andrew
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10/6/1999 10:37:00 PM:Jeffrey Haluska
I sincerely did not try to be 
distastesful.  If you took it that way 
(which Richard didn't) it is your 
problem.
After rooting around for a 
couple minutes, I actually DID manage 
to find the code along with an email 
reply I got from Craig Reynolds, a very 
nice guy.  I was wrong it was only 4 
years ago.
As right now it doesn't 
compile, cause it was written for VB 
4.0 (I have VB 6.0 now), and my EXE 
requires a VB40032.DLL.
If I get 
time, I'll try to get it to work in 
6.0, and upload it.
Also, if you 
think it runs slow on your computer 
with lots of boids, I originally had to 
write it on a 486 66.
Jeff
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10/6/1999 11:34:00 PM:suresh
good program
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10/7/1999 3:46:00 PM:Richard Lowe
Andrew - It is quite possible that the 
boids will go into an object. The 
Calculations TRY to make them avoid 
this - but if other obstacle or boids 
get in the way - BANG. This is also 
true in Nature - birds, fish etc will 
try to avoid hitting and obstacle - but 
don't always succeed - If you read the 
multitude of documentation on the net 
about boids - you will find this is 
very common. If you change the maths to 
try to ensure they boids avoid the 
obstacles - the flocking behavoiur 
falls apart.
Jeff - glad you found 
the code - look forward to seeing it - 
let me know if you need any help in the 
conversion.
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10/8/1999 12:30:00 AM:Bryan Cairns
That's one of the most amazing things i 
have seen done in VB - great job
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10/8/1999 10:21:00 AM:Richard Lowe
Jeff - Thanks for the code - It looks 
great. I too was inspired by Steven 
Levy's book Artifical Life - a great 
read.
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10/16/1999 8:44:00 AM:122
GREAT WORK!!!
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10/16/1999 8:45:00 AM:John Doe
COOL!!
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10/16/1999 5:38:00 PM:Russ Smith
What an incredible piece of work - I am 
fascinated by these "BOID" things and 
have begun to research them.  Sadly I 
didn't even realize such a thing could 
be done in VB - not to mention it being 
done in so very few lines of code.  
GREAT JOB!
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10/21/1999 9:12:00 AM:Lupine
i have seen this before on the site. i 
like it alot very good work
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10/25/1999 2:06:00 AM:Shambler
Very slick indeed. Time for a group 
session of "screw you!" to all the C++ 
snobs...
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10/26/1999 7:45:00 PM:Chen Gang
A Bug. When set Sensor Range to 0,a 
runtime error arises and the app exits.
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10/31/1999 4:58:00 AM:Alexandre Moro
Guys,
Apart from any bug, I think MANY 
congratulations go to Richard by 
implementing such algorithm in 
VB.
This is EXTREME DIFFICULT, I know 
what I'm talking about...
Richard, 
parabéns!!!
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1/24/2000 10:19:40 AM:OmarSwan
Great Work.
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3/23/2000 6:51:56 PM:Armen Nalian
It is great!!!!!!
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9/25/2000 1:43:07 AM:Craig Reynolds
Despite the fact that it was almost 
a
year ago that Richard Lowe told me 
about
his VB boids implementation, I 
am just
now getting around to updating 
my boids
page to include a link to 
this page.
(BTW after two domain 
changes my page is
now at 
http://www.red3d.com/cwr/boids/)
Sorry 
for the delay, and happy flocking!
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7/30/2001 10:25:13 PM:brewguru99
Wow! a celeb!
BTW - I recently 
re-downloaded this program and am 
currently implementing my own version, 
with added AI attributes... Oohhhhh I'm 
so excited about this.
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