class Player {
  init(opts){
    this.width = opts && opts.width ? opts.width : 20;
    this.height = opts && opts.height ? opts.height : 20;
    this.x = opts && opts.x ? opts.x : 0;
    this.y = opts && opts.y ? opts.y : 0;
    this.vy = 0;
    this.agility = opts && opts.agility ? opts.agility : 5;
    this.jumpPower = opts && opts.jumpPower ? opts.jumpPower : 20;
    this.jumping = 0;
  }
}