int maxGuy = 200;

float m1,m2 = 0;
Guy[] guyList= new Guy[maxGuy];

void setup ()
{
  size (500, 300);
  smooth ();
  cursor(CROSS);
  
  for (int i=0; i<maxGuy; i++){
    guyList[i] = new Guy(0,0);
    guyList[i].getOut ();
  }
  
  background (255,0,0);
}

void draw ()
{
  for (int i=0; i<maxGuy; i++){
    guyList[i].update ();
  }
  
  if ((millis() - m2) > 40){
    stroke (255,255,255, 20);
    fill (255,255,255, 20);
    rect (0,0, width, height);
    
    for (int i=0; i<maxGuy; i++){
      guyList[i].draw ();
    }
    m2 = millis();
  }
}

class Guy
{
  float posX, posY;
  int big;

  Guy (float x, float y)
  {
    posX = x;
    posY = y;
    big = 0;
  }

  void draw ()
  {
    fill (255,0,0, 40);
    stroke (255,255,255, 25);
    setSize ();
    ellipse (posX, posY, big, big);
  }

  void update ()
  {
    posX += getAcc ('x');
    posY += getAcc ('y');
    
    if (posX < mouseX + 5 && posX > mouseX - 5 && posY < mouseY + 5 && posY > mouseY - 5) {
      getOut ();
    }
  }

  float distFromMouse ()
  {
    return sqrt(pow(posX - mouseX,2) + pow(posY - mouseY,2));
  }
  
  float getAcc (char tag)
  {
    float result = 0;
    
    if (tag == 'x') { result = (mouseX - posX) / (pow(distFromMouse (), 2) / 10);
    } else
    if (tag == 'y') { result = (mouseY - posY) / (pow(distFromMouse (), 2) / 10);
    }
    
    result *= 5;
    
    return result;
  }
  
  void getOut ()
  {
   posY = random (-150, height + 150); 
   
   if (posY < height+50 && posY > -50) {
     posX = random (-2, 2);
     if (posX > 0){ posX = 1; } else { posX = -1; }
     posX = random(50, 150) * posX;
     if (posX > 0) { posX = width + posX; }
    } else {
     posX = random (-150, width + 150); 
    }
  }
  
  void setSize ()
  {
    big = int ( ((big*7) + (distFromMouse () / 5))/8);
    big += 1;
  }
}