class Blob
{
  Color blobColor;

  float posx, posy, d;
  float v;
  float weight = 6.0;
  float flicked = 0;
  float origd;

  float bob, rad, speed;
  int animation;

  Blob(int maxX, int maxY)
  {
    posx = random(0, maxX);
    posy = random(0, maxY);
    origd = random(25, 150);
    d = 0;
    bob = 0;
    blobColor = new Color();
    rad = random(5, 20);
    speed = random(0.1,0.5);
  }

  void update()
  {
    switch(animation)
    {
    case 1:
      bob += 1;
      if(bob >=360 )
        bob = 0;
      d = d + rad * sin(bob*(speed));
      break;
    case 2:
      blobColor.a -= speed * random(2, 10);
      break;
    default:
      if(d < origd)
      {
        d += random(0.1, 0.5);
      }
      break;
    }
  }

  void render()
  {
    strokeWeight(5 * (blobColor.a / 255));
    stroke(0,  blobColor.a);
    fill(blobColor.r, blobColor.g, blobColor.b, blobColor.a);//, (life/birth)*a);
    ellipse(posx, posy, d, d);
  }

  boolean isDead()
  {
    return (blobColor.a <=0 );
  }

  boolean inside(int x, int y)
  {
    if( (posx - x) * (posx - x) + (posy - y) * (posy - y) <= (d/2) *
      (d/2) && animation != 2)
      return true;
    return false;
  }

  Color getColor()
  {
    return blobColor;
  }

  void animate(int mode)
  {
    if(animation == 2 )
      return;
    animation = 0;
    if(mode > 0)
      animation = mode;
  }
}

class Background
{
  float r, g, b;
  Color bgColor;
  Color toColor = new Color();
  Color stepColor = new Color();
  int steps, stepsize;
  boolean inProcess;
  Background()
  {
    bgColor = toColor = new Color(255, 255, 255, 255);
  }

  void update()
  {
    if(!toColor.equals(bgColor))
    {
      transitionTo( toColor );
    }
  }

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

  void changeBG( Color newColor )
  {
    steps = (int)random(5, 250);
    toColor = newColor;
    stepColor.r = ((bgColor.r - newColor.r)/steps);
    stepColor.g = ((bgColor.g - newColor.g)/steps);
    stepColor.b = ((bgColor.b - newColor.b)/steps);
  }

  void transitionTo( Color newColor )
  {
    bgColor.r -= stepColor.r;
    bgColor.g -= stepColor.g;
    bgColor.b -= stepColor.b;
  }
}