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")
      noStroke()
       rectMode(CENTER)
       rect(0,0,this.width,this.height)
       pop()
      }
      
      }
      
      