if(mapId==null || "".equals(mapId)){
throw new GameException("map can not be null");
}
final BoardMap boardMap = engine.getNewBoardMap(mapId);
//TODO change this to be dynamic map
boardMap.prepareMap(getServletContext().getRealPath("/maps/pnth.xml"));
engine.getNewGame(gameId, user, boardMap);
return (JsonFactory.toJson("done"));