code: function(x, y, object) {
              this.remove(object);
              object.x = x;
              object.y = y;
              this.add(x, y, object);
          }
docs: Changes the position of an entity already added to this entityManager.
  @method move
  @param {Number} x - The new map tile coordinate position of the entity on the x axis.
  @param {Number} y - The new map tile coordinate position of the entity on the y axis.
  @param {Obj} object - The objectity to be removed.