import traer.physics.*;
 
ParticleSystem physics;
Particle points;
  Word w,w2,w3,w4;
  
PFont myFont;

void setup()
{
  
  String[] fontList = PFont.list();
  println(fontList);
  
  size(600,600,P3D);
  
physics = new ParticleSystem(0,0.05);  //jyuryoku bane
//w = new Word("Follow my words ! Follow my words ! Follow my words ! Follow my words ! Follow my words ! Follow my words ! Follow my words ! Follow my words ! Follow my words ! Follow my words ! Follow my words ! Follow my words ! Follow my words ! Follow my words ! Follow my words ! Follow my words ! Follow my words ! ",physics);
//w = new Word("Ah, dear Juliet, why art thou yet so fair?",physics);
w = new Word("?riaf os tey uoht tra yhw ,teiluJ raed , hA",physics);
frameRate(20);
background(0);
// myFont = createFont("ShelleyLTStd-Script",32);
textFont(myFont);

}
 
void draw()
{
  fill(0,80);
  rect(0,0,width,height);
//  background(255);
  w.update();
  w.draw();
  physics.tick();
}

import traer.physics.*;
class Word {
  ParticleSystem physics;
  Particle[] lettersParticules;
  Spring[] lettersSpring;
  String wordString;
  //char[] charArray;
  float xPos;
  float yPos;
  int nbLetters;
  PFont font;
 
  Word(String wstr,ParticleSystem ps) {
    wordString = wstr;
    nbLetters = wordString.length();
    physics = ps;
 
    // The font must be located in the sketch's
    // "data" directory to load successfully
    myFont = createFont("ShelleyLTStd-Script",30); 
    xPos = random(width);
    yPos = random(height);
    lettersParticules = new Particle[nbLetters];
    lettersSpring = new Spring[nbLetters];
    boolean firstTime=true;
    for(int i=0;i<nbLetters;i++)
    {
      xPos = random(width);
      yPos = random(height);
 
      lettersParticules[i] = physics.makeParticle(10,xPos,yPos,0.0);
      if(!firstTime)
      {
        lettersSpring[i] = physics.makeSpring( lettersParticules[i], lettersParticules[i-1], 1.2, 0.1, 10);
        //physics.makeAttraction(lettersParticules[i] , lettersParticules[i-1], -200 , -100 );
      }
      else
      {
        firstTime=false;
      }
    }
    lettersParticules[0].makeFixed();
  }
  void draw()
  {
    fill(200, 147, 188);
    for(int i=0;i<nbLetters;i++)
    {
      textFont(myFont, 40+i/10.0);
      text(wordString.charAt(nbLetters-i-1),lettersParticules[i].position().x(),lettersParticules[i].position().y());
    }
  }
  void update()
  {
    for(int i=0;i<nbLetters;i++)
    {
      if(lettersParticules[i].position().y() > height)
      {
        lettersParticules[i].velocity().set(lettersParticules[i].velocity().x(),-abs(lettersParticules[i].velocity().y()),lettersParticules[i].velocity().z());
      }
      if(lettersParticules[i].position().x() > width)
      {
        lettersParticules[i].velocity().set(-abs(lettersParticules[i].velocity().x()),lettersParticules[i].velocity().y(),lettersParticules[i].velocity().z());
      }
 
      ;
    }
    //lettersParticules[0].position().set( width-frameCount*2,height/2, 0);
lettersParticules[0].position().set(mouseX,mouseY, 0);
    //lettersParticules[0].setX(mouseX);
    //lettersParticules[0].setY(mouseY);
  }
}