constructor(x,y,speed){

   this.x = x;

   this.y = y;

   this.speed = speed;

   this.direction = 1;

   this.burger = loadImage("burger.png")

  }

  move(speed) {

    this.xspeed = speed;

    this.x += speed * this.direction;

    if (this.x + 100 > width || x < -burger.width) {

      this.direction *= -1;

    }

  }

  display(){

    image(this.burger, this.x, this.y)

  }

}