chipset - OpenProcessing

mySketch
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  var start = [];
var b;
function setup() {
  createCanvas(windowHeight, windowHeight);
  b = color(100,100,100,255);
  background(b);
noStroke();
  start.push(new Agent(width>>1, height>>1, 0));
}
​
function draw() {
for(var i=0; i < start.length; i++)
{
  start[i].move();
  start[i].draw();
}
}
​
class Agent{
  constructor (x, y, angle){
    this.x = x;
    this.y = y;
    this.angle = angle;
    this.speed = random(1,5);
    this.isRunning = true;
  }
  
   move(){
     if(!this.isRunning) return;
     this.changeAngle();
     this.split();
    this.x = this.x + this.speed*cos(this.angle);
    this.y = this.y + this.speed*sin(this.angle);
     this.hasReachedBorder();
     this.isColliding();
     return;
  }
  
  changeAngle() {
  var num = random(1)
  if (num < 0.05) this.angle += PI/4;
    else if(num < 0.1) this.angle -= PI/4;
  }
  
  split(){
    var num = random(1);
    if (num < 0.1) {
      this.angle += PI/2
      start.push(new Agent(this.x + this.speed*cos(this.angle-PI/2),
                           this.y + this.speed*sin(this.angle-PI/2),
                           this.angle-PI/2));
    }
  }
  
  hasReachedBorder(){
    if (this.x > windowHeight) this.x = 0;
    else if (this.x < 0) this.x = windowHeight-1;
    if (this.y > windowHeight) this.y = 0;
    else if (this.y < 0) this.y = windowHeight-1;
}
  
  isColliding(){
    if (red(get(this.x + this.speed*cos(this.angle-PI/4),
                           this.y + this.speed*sin(this.angle-PI/4))) != red(b)) this.isRunning= false;
return;
  }
  
  draw(){
     if(!this.isRunning) return;
    ellipse(this.x, this.y, 5, 5);
        return;}
}