text: class Circle{
    //ABSTRACT!
    constructor(x,y,r){
      this.r = r;
      this.x = x;
      this.y = y;
    }
  
  }
  
  Circle.prototype.setColor = function(r,g,b){
    //sets RGB-value
    this.colr = r;
    this.colg = g;
    this.colb = b;
  }
  Circle.prototype.show = function(){
    //draws circle
    noStroke();
    fill(this.colr,this.colg,this.colb);
    ellipse(this.body.position.x,this.body.position.y,this.r*2);
  }
  Circle.prototype.createBody = function(options){
    //creates body
      this.body = Bodies.circle(this.x,this.y,this.r,options);
  }
  Circle.prototype.addToWorld = function(){
    //add it to the world
      World.add(world,this.body);
  }
  Circle.prototype.removeFromWorld = function(){
    //removes from the world
    World.remove(world,this.body);
  }
  