Comments on: Flipping you the Boid

By: shade

shade — Sat, 10 Sep 2011 07:48:22 +0000

this is a great library, thanks. fyi i’ve made a game using your library you can play it here http://www.newgrounds.com/portal/view/539822

By: Paisaje Sonoro Interactivo

Paisaje Sonoro Interactivo — Mon, 05 Sep 2011 02:54:50 +0000

[...] El vehículo se desarrolló a partir de la librería SteeredVehicle descrita en el libro Advanced ActionScript3 Animation de Keith Peters. Puede encontrarse una librería similar en http://blog.soulwire.co.uk/laboratory/flash/as3-flocking-steering-behaviors [...]

By: Flocking algorithms | Dave Wallace

Flocking algorithms | Dave Wallace — Fri, 13 May 2011 04:36:27 +0000

[...] http://blog.soulwire.co.uk/laboratory/flash/as3-flocking-steering-behaviors [...]

By: Chris Dennett

Chris Dennett — Tue, 12 Apr 2011 14:55:33 +0000

Lovely, really lovely. I was lost in the flock for 15 minutes, one of the shoal. Even when they turned on me it felt like home. Thank you very much for this, you’re a wonderful person.

By: Kinect Flash Tests - The Lawrie Cape Blog

Kinect Flash Tests - The Lawrie Cape Blog — Mon, 04 Apr 2011 08:34:03 +0000

[...] Items move around the screen based on the depth levels from the camera. Based on Soulwire’s Flocking Experiment. [...]

By: Efflam

Efflam — Fri, 25 Feb 2011 01:06:15 +0000

@Mike : In the updateBoid method, try something like this :
boid.wander();
boid.seek(new Vector3D(stage.stageWidth / 2, stage.stageHeight / 2, 0), 0.4);
boid.flee(new Vector3D(stage.mouseX, stage.mouseY, boid.z), 100, 2);

By: Boids « Matthias Oostrik

Boids « Matthias Oostrik — Fri, 04 Feb 2011 14:01:10 +0000

[...] the future I’m inspired by this demo. The inputs are very understandable and easy to [...]

By: Mike

Mike — Tue, 01 Feb 2011 15:12:01 +0000

This is really awesome. Thank you very much for sharing this. Can you tell the order of flee, seek or wander that can made the Predator effect? I tried many ways but it always end up flee the mouse to one side of the boundary. It doesn’t cover the boundary.

By: esimov

esimov — Tue, 25 Jan 2011 10:04:32 +0000

hello James,
i was fascinated about the simplicity of the code for the flocking effect, and i tried to reconstruct it for my own needs. however i have a simple question to you, maybe it’s a bit stupid, but i haven’t found anything on the web related to it: how can i remove the boids from stage because something like:

_boidHolder.removeChild(Boid(_boids[_maxBoids.value]).renderData);
(where _maxBoids.value is the slider variable value)

do not wipe the boids off the screen. This is somehow related to the 2D to 3D conversion and vice versa?
Thanks in advance!

By: Mario Gonzalez

Mario Gonzalez — Sun, 14 Nov 2010 18:29:01 +0000

Btw based on my own usage, I have modified this behavior in all implementations I’ve used. I believe it is unintentional?

[In Boid::wander]
_wanderTheta += Math.random() * _wanderStep;

if ( Math.random() < 0.5 )
{
_wanderTheta = -_wanderTheta;
}

Should be:
var angleChange:Number = Math.random() * _wanderStep;
if (Math.random() < 0.5) {
angleChange = -angleChange;
}

_wanderTheta += angleChange;

Otherwise wandertheta, can jump from 20 to -20 to 25 to -27 and so on (for example). You notice the glitchiness if you draw the wanderPosition