AS3 particle effect

[phadam]

Anybody know of any particle effect tutorials i can follow in as3??? I would like to use one as a background on my site but I can only seem to find as1 and as2 tutorials. Still a learning process for me

here is a link to what i am looking for
http://www.actionscript.org/resources/articles/125/1/Simple-Particle-Effect/Page1.html

ive done some searching and found other useful tutorials but still no luck on the particle effect. thanks

 

[snickelfritz]

I followed the tutorial and changed the code to AS3.
Works pretty well.

frame1:

var xMin:int = 0;
var xMax:int = 550;
var yMin:int = 0;
var yMax:int = 400;
var minSize:int = 10;
var maxSize:int = 50;
var easeFactor:int = 10;

var randomX:int = Math.random () * ( xMax - xMin ) + xMin;
var randomY:int = Math.random () * ( yMax - yMin ) + yMin;
var randomSize:int = Math.random () * ( maxSize - minSize ) + minSize;

frame3:

var distance:int = Math.sqrt(Math.pow(this.x-randomX, 2)+Math.pow(this.y-randomY, 2));

if (Math.abs(this.width-maxSize)>1)
{
	this.width += (randomSize-this.width)/2;
	this.height += (randomSize-this.height)/2;
}

if (distance>1)
{
	this.x += (randomX-this.x)/easeFactor;
	this.y += (randomY-this.y)/easeFactor;
	gotoAndPlay(2);
} else
{
	gotoAndPlay(1);
}

 

[lucidmedia]

The book:

Foundation Actionscript 3.0 Animation: Making Things Move! by Keith Peters

has a nice chapter on writing particle systems.

Also, it may be worth looking at things like Flint: http://flintparticles.org/

 

[phadam]

awesome. works great. i may head down to the book store this weekend. I'll definitely check out that book by Keith Peters.

Thanks guys. the site is really coming along. slowly but getting there

 

[Kelon]

Yes, the book above is one of the best I've come across for focussed tutorials on making things move. It's by FriendsofED publishing. It's a bit dry and lots of maths, but the animation possibilities that open up are awesome. Some of my best work resulted form studying that book.