private void getFloorPlanGetDirt(String line, CellDescription cellDescription) {
      int startIndex;
      int endIndex;
      /*get amount of dirt of floor*/
      startIndex = line.indexOf("ds") + 4;
      endIndex = line.indexOf('\'', startIndex);
      try {
         cellDescription.dirt(Integer.parseInt(line.substring(startIndex, endIndex)));
      } catch (Exception e) {
         LOGGER.log(Level.WARNING, "Invalid file dirt not an int", e);
      }
      if (cellDescription.dirt() > 0) {
         cellDescription.sI.dirtPresent = true;
      } else {
         cellDescription.sI.dirtPresent = false;
      }
   }