import krister.Ess.*;


float a = 100;
float x = random(0, width);
float y = random(0, height);
float r = random(0, 5);
boolean gameover = false;
Background bg = new Background();
 
float[] segx = new float[20];
float[] segy = new float[20];
float segLength = 0;
ArrayList circles = new ArrayList();

void setup() 
{
  size(400, 400);
  stroke(255);
  smooth();
  circles.add(new CrazyCircle());
  frameRate(60);
}

class Background {
  float r, g, b;
  float step = 5;

  Background() {
    r = random(0,256); 
    g = random(0,256);
    b = random(0,256);
  }

  void update() {
    r += random(-step, step);
    g += random(-step, step);
    b += random(-step, step);
  }

  void render() {
    background(r, g, b);
  }
}

//boolean 
class CrazyCircle {
  float x, y, h, s, life;
  float r, g, b, a;
  float step;
  CrazyCircle()
  {
    x = random(0, width);
    y = random(0, height);
    r = random(0, 256);
    g = random(0, 256);
    b = random(0, 256);
    a = random(0, 2);
    step = random(0, 10);
    h = 0;
    s = random(0.1, 2.5);
  }
  void update() {
    h += s;
    r += random(-step,step);
    g += random(-step,step);
    b += random(-step,step);
    a += random(0, a);
    strokeWeight(5);

  stroke(0, 100);
    
    fill(r, g, b, a);
    ellipse(x, y, h, h);
  }
  boolean isDead() {
    if( h > width || h > height)
      return true;
    return false;
  }
  boolean isClicked( int mx, int my)
  {
    if( ((x-mx) * (x-mx)) + ((y-my) * (y-my)) <= ((h/2) * (h/2)))
      return true;
    return false;
  }
}



void draw() 
{
  bg.render();
  if(!gameover)
  {

    for(int i = 0; i < circles.size(); ++i)
    {  
      CrazyCircle temp = (CrazyCircle)circles.get(i);
      temp.update();
      if(temp.isDead() )
      {
        gameover = true;
      }

    }
  }
  else
  {


  }
  
  dragSegment(0, mouseX, mouseY);
  for(int i=0; i<segLength && i<segx.length-1; i++) {
    dragSegment(i+1, segx[i], segy[i]);
  }
  
}

void mouseMoved() {
    bg.update();
}
  

void mousePressed() {
  for(int i = circles.size()-1; i >= 0; --i)
  {  
    CrazyCircle temp = (CrazyCircle)circles.get(i);
    if(temp.isClicked(mouseX, mouseY))
    {
      circles.remove(i);
      if(circles.size()<50)
      {
        ++segLength;
        if(segLength>20)
          segLength = 20;
        double t = random(0, 1);
        if(t<0.25)
          circles.add(new CrazyCircle());

        circles.add(new CrazyCircle());
              Runtime r = Runtime.getRuntime();
      r.gc();
      }
      break;
    }
  }
}

void dragSegment(int i, float xin, float yin) {
  float dx = xin - segx[i];
  float dy = yin - segy[i];
  float angle = atan2(dy, dx);  
  segx[i] = xin - cos(angle) * 5 * segLength;
  segy[i] = yin - sin(angle) * 5 * segLength;
   
  
  strokeWeight(i);
  stroke(0, i*100);
  fill(i*i, 50);
  segment(segx[i], segy[i], angle);
}

void segment(float x, float y, float a) {
  pushMatrix();
  translate(x, y);
  rotate(a);
  //line(0, 0, segLength, 0);
  ellipse(0,0, segLength*a, segLength*a);
  popMatrix();
}


/**//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////