Cell Division - OpenProcessing

mySketch
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let bubbles = [];
let x = 0;
​
function setup() {
  createCanvas(windowWidth,windowHeight);
  background(x);
  for(let i = 0; i < 20; i++){
    let x = random(width);
    let y = random(height);
    let s = 100;
               
    let b = new Bubble(x, y, s);
    bubbles.push(b);
  }
}
​
function mousePressed() {
  for(let b of bubbles){
    b.divide(mouseX,mouseY);
  }
}
​
function draw() {
  background(x);
  for(let b of bubbles){
    b.move();
    b.show();
    for(let other of bubbles){
      if (b != other && b.intersect(other)){
        b.flee(other.x,other.y);
      }
    }
  }
}
​
class Bubble {
  constructor(x, y, r) {
    this.x = x;
    this.y = y;
    this.r = r;
    
    this.a = 255;
    this.b = 0;
    this.c = 0;
  }
​
  move() {
    let m = 10;
    
    if(this.x < width && this.x > 0){
      this.x = this.x + random(-5, 5);
    }
    else{
      if(this.x <= 0){
        this.x +=m;
      }
      else{
        this.x -=m;
      }
    }
    if(this.y < height && this.y > 0){
      this.y = this.y + random(-5, 5);
    }
    else{
      if(this.y <= 0){
        this.y +=m;
      }
      else{
        this.y -=m;
      }
    }
  }
​
  show() {
    noStroke();
    strokeWeight(1);
    fill(this.a, this.b, this.c);
    ellipse(this.x, this.y, this.r, this.r);
  }
  
  intersect(other) {
    let d = dist(this.x, this.y, other.x, other.y);
    return (d < (this.r/2 + other.r/2));
  }
  
  divide(px, py) {
      let d = dist(px, py, this.x, this.y);
      if(d < this.r/2){
        this.r -= 5;
                
        let x = this.x + 50;
        let y = this.y;
        let s = this.r;
              
        let b = new Bubble(x, y, s);
        bubbles.push(b);
      }
    }
  
  flee(px, py) {
    let d = dist(px, py, this.x, this.y);
    if(d < (this.r + 100)){
      if(this.x < width && this.x > 0){
          if(this.x < px){
            this.x -= 10;
          }
          else{
            this.x += 10;
          }
        }
      
        if(this.y < height && this.y > 0){
          if(this.y < py){
            this.y -= 10;
          }
          else{
            this.y += 10;
          }
        }     
      }   
    }
  
}