text: GS.Concrete = function(grid, layer, sourceObj) {
  	GS.GridObject.apply(this, arguments);
  
  	if (layer === GS.MapLayers.Sector) {
  		this.sector = this.sourceObj;
  	}
  
  	this.view = {
  		collisionData: {
  			triangles: null,
  		},
  	};
  };
  
  GS.Concrete.prototype = GS.inherit(GS.GridObject, {
  	constructor: GS.Concrete,
  });