text: class Stone{
     constructor(x, y, w, h){
         let options = {
             restitution: 0.8
         };
  
         this.body = Bodies.rectangle(x, y, w, h, options);
         this.w = w;
         this.h = h;
       
  
         World.add(world, this.body);
  
      }
  
    show(){
        var pos = this.body.position;
        var angle = this.body.angle;
        push();
        translate(pos.x, pos.y);
        pop();
  
    }
   }