Bubble[] b = new Bubble[300];

void setup() {
  size(1920, 1080);
  for (int i = 0; i < b.length; i++) {
  b[i] = new Bubble(random(30,64));
}
}

void draw () {
  background(random(100,250),random(100,250),100);
  for (int i = 0; i < b.length; i++) {
  b[i].ascend();
  b[i].display();
  b[i].top();
  }
  
  //For recording the screen
  //saveFrame("output/psych_bubbles_#######.png");
}

//BUBBLE CLASS

class Bubble {
  float x;
  float y;
  float diameter;
  float yspeed;


  Bubble(float tempD) {
    x = random(width);
    y = height;
    diameter = tempD;
    yspeed = random (0.25, 4);
  }
    
  void ascend() {
    y = y - yspeed;
    x = x + random (-2, 2);
  }

  void display() { 
    ellipse(x, y, diameter, diameter);
    fill(100,random(100,250),random(100,250),80);
    strokeWeight(random(0, 1));
  }

  void top() {
    if (y < -diameter) {
      y = height + diameter;
    }

 
  }
}