//import processing.opengl.*;

/*This is based on the Bouncy Bubbles from Keith Peters (www.bit-101.com). I've added the ability
to use WordPress tags to size the bubbles and link to the url of the tags*/



int numBalls=25;
float spring = 0.02;
float gravity = -0.03;
float friction = -0.9;
ball[] balls = new ball[numBalls];

int recordCount;
record[] records;
String[] lines;
PFont body;
int num = 45; // Display this many entries on each screen.
int startingEntry = 0;  // Display from this entry number

int originPoint;


boolean leftClicked=false;


void setup() 
{
  size(1240, 800, P2D);
  fill(255,50,50,50);
  smooth();

  body = loadFont("Georgia-64.vlw"); 
  textFont(body); 
  
  
  float origin=random(0,numBalls);
  originPoint=int(origin);

  lines = loadStrings("http://www.bryanleister.com/test.txt");
  records = new record[lines.length];

  for (int i = 0; i < lines.length; i++) {
    String[] pieces = split(lines[i], "'"); // Load data into array
    if (pieces.length >= 8) {
      records[recordCount] = new record(pieces);
      recordCount++;
    }

  }

  for (int i= 0; i < numBalls; i++) {
    int thisEntry = startingEntry + i;
    String n=records[thisEntry].name.replace(">","");
    n=n.replace("</a","");
    String t = records[thisEntry].topics.replace(" topic","");
    t=t.replace("s","");
    float hits=float(t);

    balls[i] = new ball((width/2)-i, (height/2)+i, (hits*10), i,records[thisEntry].url,n,balls);

  }
}

void draw() {
  background(255);
  for (int i = 0; i < numBalls; i++) {
    balls[i].collide();
    balls[i].move();
    balls[i].display();  
  }

}

void stop(){
}


class record {
  String url;
  String topics;
  String name;

  public record(String[] pieces) {
    url=pieces[1];
    topics=pieces[5];
    name=pieces[8];

  }
}


class ball {
  float x, y;
  float diameter;
  float vx = 0;
  float vy = 0;
  int id;
  String ballurl;
  String ballname;
  ball[] others;

 ball(float xin, float yin, float din, int idin, String ballurlin, String ballnamein, ball[] oin) {
    x = xin;
    y = yin;
    diameter = din;
    id = idin;
    others = oin;
    ballurl=ballurlin;
    ballname=ballnamein;

  } 

  void collide() {
    for (int i = id + 1; i < numBalls; i++) {
      float dx = others[i].x - x;
      float dy = others[i].y - y;
      float distance = sqrt(dx*dx + dy*dy);
      float minDist = others[i].diameter/2 + diameter/2;
      if (distance < minDist) { 
        float angle = atan2(dy, dx);
        float targetX = x + cos(angle) * minDist;
        float targetY = y + sin(angle) * minDist;
        float ax = (targetX - others[i].x) * spring;
        float ay = (targetY - others[i].y) * spring;
        vx -= ax;
        vy -= ay;
        others[i].vx += ax;
        others[i].vy += ay;
        fill(255,70,70,10);
        textSize(diameter);
        text(ballname, x-diameter, y+diameter);// Print name to console
      }
    }   
  }

  void move() {
    vy += gravity;
    x += vx;
    y += vy;
    if (x + diameter/2 > width) {
      x = width - diameter/2;
      vx *= friction; 
    }
    else if (x - diameter/2 < 0) {
      x = diameter/2;
      vx *= friction;
    }
    if (y + diameter/2 > height) {
      y = height - diameter/2;
      vy *= friction; 
    } 
    else if (y - diameter/2 < 0) {
      y = diameter/2;
      vy *= friction;
    }
  }

  void display() {
    noStroke();
    fill(255,50,50,150);
    
    stroke(255,150,150,50);
    if(x>=1000){x=0;}
    ellipse(x, y, diameter, diameter);
    fill(50,50,50,20);
    line(x,y,others[originPoint].x,others[originPoint].y);
    //println(others[id].x);
    //scale(diameter);
    textSize(diameter);
    if(dist(mouseX,mouseY, x,y)<20){
      x=mouseX;
      y=mouseY;
      vx=0;
      vy=0;
      fill(100,100,100,100);
      text(ballname, x-diameter, y+diameter);
      if(mousePressed==true && leftClicked==true){
        link(ballurl);
        leftClicked=false;
      }
    }
    //text(ballname, x-diameter, y+diameter);

  }
}



void mousePressed()
{
  if(mouseButton==LEFT)
  {
    leftClicked=true;
  }
}

void mouseReleased()
{
  if(mouseButton==LEFT)
  {
    leftClicked=false;
  }
}