// getVesselAt.js
(function () {
  /* global AdventureJS A */
  var p = AdventureJS.Assets.Tangible.prototype;
  /**
   * Get substance container at specified preposition.
   * @memberOf AdventureJS.Assets.Tangible
   * @method AdventureJS.Assets.Tangible#getVesselAt
   * @param {string} aspect - The aspect to check.
   * @return {Object|Null}
   */
  p.getVesselAt = function Tangible_getVesselAt(aspect) {
    if (
      !this.getAspectAt(aspect) ||
      !this.aspects[aspect].vessel ||
      !this.aspects[aspect].vessel.class
    ) {
      return null;
    }
    return this.aspects[aspect].vessel;
  };
})();