// isIn.js
(function() {
	/*global adventurejs A*/ 
  "use strict";
  var p = adventurejs.Tangible.prototype;	

  /**
   * <strong>isIn</strong> tests whether 
   * one asset is in (any aspect of) another asset.
   * <pre class="display"><code class="language-javascript">if( MyGame.$('jewel').$isIn('crown') ){ // do stuff }
   * </code></pre>
   * @memberOf adventurejs.Tangible
   * @method adventurejs.Tangible#isIn
   * @param {Object|String} asset Can be string or object.
   */
  p.isIn = p.$isIn = function Tangible_isIn( asset ) 
  {
		if("string" === typeof asset) asset = this.game.getAsset(asset);
    if(!asset) return false;
    var parent_id;
    var nextlevel;

		// get parent of this
    if( this.place ) nextlevel = this.getPlaceAsset();

		// this has no parent
		if( !nextlevel ) return false;

		while ( nextlevel ) 
    {
			if( nextlevel.id === asset.id ) 
      { 
				return true;
			} 
      else 
      {
        if( !nextlevel.place ) return false;
        nextlevel = nextlevel.getPlaceAsset();
        if( !nextlevel ) return false;
			}
		}

		return false;

  }
}());