text: class Ground{
      constructor(x,y,width,height){
          var options = {
              isStatic: true
          }
          this.width = width;
          this.height = height;
          this.body = Bodies.rectangle(x, y, this.width, this.height, options);
          World.add(world, this.body);
  
      }
      display(){
          var pos = this.body.position;
          push();
          translate(pos.x, pos.y);
          fill("brown");
          rectMode(CENTER);
          rect(0,0,this.width, this.height);
          pop();
      }
  }