// getAssetsByClass.js

(function () {
  /* global AdventureJS A */

  var p = AdventureJS.Game.prototype;

  /**
   * <strong>getAssetsByClass</strong> takes a string representing
   * an asset class and tries to return a list of assets.
   * @memberOf AdventureJS.Game
   * @method AdventureJS.Game#getAssetsByClass
   * @param {String} identifier Name or ID of a game object.
   * @param {Object} params Used to check for 'prefer_substance' in cases of looking for substances in containers.
   * @returns {Object} A game asset.
   */
  p.getAssetsByClass = function Game_getAssetsByClass(identifier, params = {}) {
    const found = [];

    for (let item in this.game.world) {
      let asset = this.game.world[item];
      if (asset.class && asset.hasClass(identifier)) found.push(asset);
    }

    return found;
  };
})();