Rain

This example uses a simple rain simulation and a collision zone to bounce the rain off the umbrella.

package
{
  import org.flintparticles.twoD.emitters.Emitter2D;
  import org.flintparticles.twoD.renderers.PixelRenderer;

  import flash.display.Bitmap;
  import flash.display.Sprite;
  import flash.geom.Rectangle;

  [SWF(width='600', height='400', frameRate='60', backgroundColor='#000000')]
  
  public class Main extends Sprite
  {
    private var emitter:Emitter2D;
    
    public function Main()
    {
      emitter = new Rain();
      
      addChild( new Bitmap( new Image1( 600, 400 ) ) );
      
      var renderer:PixelRenderer = new PixelRenderer( new Rectangle( 0, 0, 600, 400 ) );
      renderer.addEmitter( emitter );
      addChild( renderer );
      
      emitter.start();
      emitter.runAhead( 4, 30 );
    }
  }
}

package
{
  import org.flintparticles.common.counters.Steady;
  import org.flintparticles.common.initializers.AlphaInit;
  import org.flintparticles.twoD.actions.Accelerate;
  import org.flintparticles.twoD.actions.CollisionZone;
  import org.flintparticles.twoD.actions.DeathZone;
  import org.flintparticles.twoD.actions.Move;
  import org.flintparticles.twoD.actions.SpeedLimit;
  import org.flintparticles.twoD.emitters.Emitter2D;
  import org.flintparticles.twoD.initializers.Position;
  import org.flintparticles.twoD.initializers.Velocity;
  import org.flintparticles.twoD.zones.DiscZone;
  import org.flintparticles.twoD.zones.LineZone;
  import org.flintparticles.twoD.zones.RectangleZone;

  import flash.geom.Point;

  public class Rain extends Emitter2D
  {
    public function Rain()
    {
      counter = new Steady( 1000 );
      
      addInitializer( new Position( new LineZone( new Point( -55, -5 ), new Point( 605, -5 ) ) ) );
      addInitializer( new Velocity( new DiscZone( new Point( 60, 400 ), 20 ) ) );
      addInitializer( new AlphaInit( 0.5 ) );
      
      addAction( new Move() );
      addAction( new CollisionZone( new DiscZone( new Point( 245, 275 ), 150 ), 0.3 ) );
      addAction( new DeathZone( new RectangleZone( -60, -10, 610, 410 ), true ) );
      addAction( new Accelerate( 0, 500 ) );
      addAction( new SpeedLimit( 500 ) );
    }
  }
}

import org.flintparticles.common.counters.Steady;
import org.flintparticles.common.initializers.AlphaInit;
import org.flintparticles.twoD.actions.Accelerate;
import org.flintparticles.twoD.actions.CollisionZone;
import org.flintparticles.twoD.actions.DeathZone;
import org.flintparticles.twoD.actions.Move;
import org.flintparticles.twoD.actions.RotateToDirection;
import org.flintparticles.twoD.actions.SpeedLimit;
import org.flintparticles.twoD.emitters.Emitter2D;
import org.flintparticles.twoD.initializers.Position;
import org.flintparticles.twoD.initializers.Velocity;
import org.flintparticles.twoD.renderers.PixelRenderer;
import org.flintparticles.twoD.zones.DiscZone;
import org.flintparticles.twoD.zones.LineZone;
import org.flintparticles.twoD.zones.RectangleZone;

import flash.display.Sprite;
import flash.geom.Rectangle;

var emitter:Emitter2D = new Emitter2D();
emitter.counter = new Steady( 1000 );

emitter.addInitializer( new Position( new LineZone( new Point( -55, -5 ), new Point( 605, -5 ) ) ) );
emitter.addInitializer( new Velocity( new DiscZone( new Point( 60, 400 ), 20 ) ) );
emitter.addInitializer( new AlphaInit( 0.5 ) );

emitter.addAction( new Move() );
emitter.addAction( new CollisionZone( new DiscZone( new Point( 245, 275 ), 150 ), 0.3 ) );
emitter.addAction( new DeathZone( new RectangleZone( -60, -10, 610, 410 ), true ) );
emitter.addAction( new Accelerate( 0, 500 ) );
emitter.addAction( new SpeedLimit( 500 ) );

var renderer:PixelRenderer = new PixelRenderer( new Rectangle( 0, 0, 600, 400 ) );
renderer.addEmitter( emitter );
addChild( renderer );

emitter.start();
emitter.runAhead( 4, 30 );

<?xml version="1.0" encoding="utf-8"?>
<s:Application
  xmlns:fx="http://ns.adobe.com/mxml/2009" 
  xmlns:s="library://ns.adobe.com/flex/spark"
  xmlns:mx="library://ns.adobe.com/flex/mx"
  xmlns:f="http://flintparticles.org/2009/flint2d"
  width="600" height="400"
  backgroundColor="#000000">

<s:BitmapImage source="{new Image1( 600, 400 )}" width="600" height="400"/>
<f:PixelRenderer id="renderer" width="600" height="400">
  <f:emitters>
    <f:Emitter id="emitter" autoStart="true" runAheadTime="4" runAheadFrameRate="30">
      <f:counter>
        <f:Steady rate="1000"/>
      </f:counter>
      <f:initializers>
        <f:Position>
          <f:LineZone startX="-55" startY="-5" endX="605" endY="-5"/>
        </f:Position>
        <f:Velocity>
          <f:DiscZone centerX="60" centerY="400" outerRadius="20"/>
        </f:Velocity>
        <f:AlphaInit alpha="0.5"/>
      </f:initializers>
      <f:actions>
        <f:Move/>
        <f:DeathZone zoneIsSafe="true">
          <f:RectangleZone left="-60" right="610" top="-10" bottom="410"/>
        </f:DeathZone>
        <f:Accelerate x="0" y="500"/>
        <f:SpeedLimit limit="500"/>
        <f:CollisionZone bounce="0.3">
          <f:DiscZone centerX="245" centerY="275" outerRadius="150"/>
        </f:CollisionZone>
      </f:actions>
    </f:Emitter>
  </f:emitters>
</f:PixelRenderer>
</s:Application>