import traer.physics.*;

ParticleSystem physics;
Particle last;
float yValue;

  int mouseCounter = 0;
  int mouse0 = mouseCounter%2;

void setup()
{
  size( 400, 400 );
  background(255);	
  fill( 255, 64 );
  frameRate( 24 );
  physics = new ParticleSystem(0.5, 0.001 );
  ellipseMode( CENTER );
  smooth();
  cursor(CROSS);
}

void mouseReleased()
{
  mouseCounter++;
  if (mouseCounter%2 == 0)
  {
    physics = new ParticleSystem(0.5, 0.001 );
  }
  else
  {
    physics = new ParticleSystem(-0.5, 0.001 );
  }
}

void draw()
{
  yValue = mouseY;
  //println(mouseY/100);
  for ( int i = 0; i < 5; i++ )
  {
   
      Particle p = physics.makeParticle( 1.0f, mouseX, mouseY, mouseY);
      p.setVelocity( random( -1, 1 ), random( -1, -1 ), 0 );
      if ( last != null )
      physics.makeSpring( p, last, 0.1f, 0.1f, 10 );
      last = p;
  }
  physics.tick();

  noStroke();

  for ( int i = 0; i < physics.numberOfParticles(); ++i )
  {
    Particle p = physics.getParticle( i );
    if(mouseCounter%2 == 1){
        //println(mouseCounter);
        fill(255);
         //physics = new ParticleSystem(-0.5, 0.001 );
//          ellipse( p.position().x(), p.position().y(), 10, 10);
//    if ( p.age() > 30 ){
//      p.kill();
          
      }
    else if(mouseCounter%2 == 0){   
      //println(mouseCounter);
      
       //physics = new ParticleSystem(0.5, 0.001 );
     
       
       
       fill( 0, 0,0,(255/(p.age()+1)*(yValue/400)) );
    }
        ellipse( p.position().x(), p.position().y(), 4, 4);
    if ( p.age() > 30 ){
      p.kill();
    }
      if(p.age()>2){
      ellipse( p.position().x(), p.position().y(), yValue/20, yValue/20);
    //println(mouseY/100);  
    }
      
    }
    }