Flint Actionscript 3 Particle System Example

Published
by
swfgeek
on March 10, 2008
in ACTIONSCRIPT 3.0, EXAMPLES, FLEX IDE, GENERAL, OPEN SOURCE and TUTORIALS
. Tags: , , , , , , , , .

.swfgeek Logo Particles

Richard Lord has recently released the Version 0.9.4 of Flint.

I made this example using Flint particle system is an Actionscript 3.0 Open Source project with the aim of create a library that handles the common functionality for all particle systems. To see it work just click anywhere on stage and it will make a nice Firework out of my “Logo”

I just tried it myself and i must say it’s super easy to use and to extend. You can find Flint source on the google code page of Flint with working examples in the downloads section there’s also some very good examples and tutorials on Flint Particle System Site and you can keep track of Richard on his blog.

The latest version comes packed with all kind of particles goodies like:

* Access all properties in Actions, Initializers, Counters and Activities so they can be modified while the emitter is running.
* AlphaInit initializer sets the initial alpha value for all particles
* ImageClasses and SharedImages initializers set the particle image to one selected from a group, with weighting to adjust the selection
* MouseExplosion action pushes particles away from the mouse
* MouseGravity action pulls particles towards the mouse
* TurnAwayFromMouse action causes particles to turn away from the mouse
* GreyscaleZone uses a greyscale image to define a zone, with weighting based on the luminence of each pixel
* Pulse counter emits particles in regular bursts
* PerformanceAdjusted counter adjusts the rate of particle emission if the frame-rate drops
* TwoWay energyEasing functions have an energy peak half-way through the particle’s lifetime

Heres the link to my example using Flint, and Flex 3 as much as I would love to add the code right below my post the IG Syntax HighLighter seems to not be getting very well with the latest update of wordpress so to get the code just right click on my example and it will take you there.

Update you can now view the code right here:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88

package {
 
    import flash.display.Bitmap;
    import flash.display.Sprite;
    import flash.events.MouseEvent;
    import flash.filters.BlurFilter;
    import flash.filters.ColorMatrixFilter;
    import flash.geom.Point;
 
    import org.flintparticles.actions.*;
    import org.flintparticles.counters.*;
    import org.flintparticles.emitters.*;
    import org.flintparticles.energyEasing.Quadratic;
    import org.flintparticles.events.FlintEvent;
    import org.flintparticles.initializers.*;
    import org.flintparticles.zones.*;
 
    [SWF( frameRate='61', backgroundColor='#000000')]
 
    public class LogoFireworks extends Sprite
    {
        [Embed(source="assets/sgw.png")]
 
        public var Logo:Class;
        public var bitmap:Bitmap = new Logo();
        public var ev:FlintEvent;
        private var emitter:PixelEmitter = new PixelEmitter();
 
        public function LogoFireworks()
        {
            ViewSource.addMenuItem(this, "srcview/index.html");
            stage.scaleMode = "noScale";
            stage.align ="TL";
            init();    
        }
 
        public function init():void
        {
            stage.addEventListener(MouseEvent.MOUSE_DOWN,startFlint);
            stage.addEventListener(MouseEvent.MOUSE_UP,stopFlint) 
        }
        public function prepareToFlint(event:MouseEvent):void
         {
          stage.addEventListener(MouseEvent.MOUSE_DOWN,startFlint);
          stage.addEventListener(MouseEvent.MOUSE_UP,stopFlint) 
 
         }
 
        public function startFlint(Event:MouseEvent):void
        {
            emitter.addFilter( new BlurFilter( 2, 2, 1 ) );
            emitter.addFilter( new ColorMatrixFilter( [ 1,0,0,0,0,
                                                        0,1,0,0,0,
                                                        0,0,1,0,0,
                                                        0,0,0,0.96,0 ] ) );
            emitter.setCounter( new Blast( 1500 ) );
            emitter.addInitializer( new ColorInit(Math.random()* 0xFFFF3300,Math.random()* 0xFFFFFF00 ) );
            emitter.addInitializer( new Lifetime( 7) );
            emitter.addInitializer( new Position( new DiscZone( new Point( 0, 0 ), 10 ) ) );
            emitter.addInitializer( new Velocity( new BitmapDataZone( bitmap.bitmapData,-211, -550 ) ) );
            emitter.addAction( new Age( Quadratic.easeIn ) );
            emitter.addAction( new Fade( 1.0, 0 ) );
            emitter.addAction( new Move() );
            emitter.addAction( new LinearDrag( 0.5 ) );
            emitter.addAction( new Accelerate( 0, 70 ) );
            addChild( emitter );
            emitter.x = stage.stageWidth/2;
            emitter.y = stage.stageHeight -(5);
            emitter.start( );
            emitter.addEventListener( FlintEvent.EMITTER_EMPTY, restart);
        }
 
        public function stopFlint(Event:MouseEvent):void
        {
            stage.removeEventListener(MouseEvent.MOUSE_DOWN,startFlint)
        }
 
        public function restart( ev:FlintEvent ):void
        {
            mouseEn();
        }
 
        public function mouseEn():void
        {
            stage.addEventListener(MouseEvent.MOUSE_DOWN,startFlint);
        }
    }
}
Creative Commons License
The Flint Actionscript 3 Particle System Example by David Gamez, unless otherwise expressly stated, is licensed under a Creative Commons Attribution-Noncommercial 2.5 Mexico License.

3 Responses to “Flint Actionscript 3 Particle System Example”

Feed for this Entry Trackback Address
  1. 1 valentino
    March 10, 2008 at 7:05 am


    Hey! I made a tutorial about creating a basic starfield in Flint System. You can find it at this url
    Maybe it can be of any help!

    Thanks for the infos

  2. 2 swfgeek
    March 10, 2008 at 9:55 am


    And it’s quite a fine tutorial definitively worth reading.

    Thanks
    Dave

  1. 1 Flint Actionscript 3 Particle System Example
    Pingback on Mar 10th, 2008 at 7:14 am

Leave a Reply