text: class CannonBall {
      constructor(x, y) {
       var options ={
           isStatic:true
          }
          this.r = 30
          this.body = Bodies.circle(x,y,this.r,options)
          this.image = loadImage("./assets/cannonball.png");
          World.add(world, this.body)
      }
      display() {
      var pos = this.body.position
        push();
        imageMode(CENTER);
        image(this.image, pos.x, pos.y, this.r, this.r);
        pop();
      }
    }
    