code: public void relocateObject (MisoSceneMetrics metrics, int tx, int ty)
      {
  //         Log.info("Relocating object " + this + " to " +
  //                  StringUtil.coordsToString(tx, ty));
          info.x = tx;
          info.y = ty;
          computeInfo(metrics);
      }
docs: Updates this object's origin tile coordinate. Its bounds and other
  cached screen coordinate information are updated.