import traer.physics.*;

Particle mouse, topL, botL, topR, botR;
Particle[] others;
//ArrayList letters;

ParticleSystem physics;

PImage img_lg, img_sm, img_tny, tg;

void setup()
{
  size( 512, 512 );
  frameRate( 24 );
  cursor( CROSS );

  // sprite mask thing stolen from dan shiffman 
  img_lg = loadImage("turkey.tga");
  img_sm = loadImage("turkey_sm.tga");
  img_tny = loadImage("turkey_tiny.tga");

  tg = loadImage("tg.tga");

  //  img = new PImage( msk.width, msk.height );
  //  for ( int i = 0; i < img.pixels.length; i++ ) 
  //   img.pixels[i] = color(255);
  // img.mask(msk);
  imageMode(CORNER);
  tint( 255, 200 );

  //letters = new ArrayList();


  physics = new ParticleSystem( 0, 0.1 );
  mouse = physics.makeParticle();
  mouse.makeFixed();
  topL = physics.makeParticle();
  topL.makeFixed();
  topL.moveTo(60,60,0);

  botL = physics.makeParticle();
  botL.makeFixed();
  botL.moveTo(height-60,60,0);

  topR = physics.makeParticle();
  topR.makeFixed();
  topR.moveTo(width-60,60,0);

  botR = physics.makeParticle();
  botR.makeFixed();
  botR.moveTo(width-60,height-60,0);

  others = new Particle[100];

  int attract = 6000;

  for ( int i = 0; i < others.length; i++ )
  {

   if (i >= 33)
   {
     if (i>=66) attract = 14000;
     else attract = 10000;
   }

    others[i] = physics.makeParticle( 1.0, random( 0, width ), random( 0, height ), 0 );
    physics.makeAttraction( mouse, others[i], attract, 100 ); 


    physics.makeAttraction( topL, others[i], attract/10,  60 );
    physics.makeAttraction( botL, others[i], attract/10,  60 );
    physics.makeAttraction( topR, others[i], attract/10,  60 );
    physics.makeAttraction( botR, others[i], attract/10, 60 );

  }

  attract = -10;

  for ( int i = 0; i < others.length; i++ )
    for ( int j = 0; j < others.length; j++ )
    {
      if (i >= 33)
      {
        if (i>=66) attract = -50;
       else attract = -25;
      }
    

      physics.makeAttraction( others[i], others[j], attract, 10 ); 
    }


  background( 255 );
}

void draw()
{
  mouse.moveTo( mouseX, mouseY, 0 );
  physics.tick();

  fill(255,10);
  rect(0,0,width,height);
  
  image(tg,0,0);

  PImage img;
  Particle p;
  
  img = img_lg;

  for ( int i = 0; i < others.length; i++ )
  {
    p = others[i];
    if (i>=33)
    {
      if (i >= 66) img = img_sm;
      else img = img_tny;
    }

    if (p.position().x() < 0 || p.position().x() > width) p.addVelocity(-p.velocity().x(),0.0,0.0);
    if (p.position().y() < 0 || p.position().y() > height) p.addVelocity(0.0,-p.velocity().y(),0.0);
  
    image(img,p.position().x()-img.width/2,p.position().y()-img.height/2);
  }
}

/*
void initLetters()
{
  // make T
  Particle p;
  
  p = physics.makeParticle(2.0, 28,28,0);
  p.makeFixed();
  letters.add(p);

  p = physics.makeParticle(2.0, 28,28,0);
  p.makeFixed();
  letters.add(p);
}
*/