public static MultiBlockStructure getMap(String mapName, App app) {
	File file = new File(mapName + ".txt");
	if (!file.exists() || !file.canRead()) {
		return null;
	}
	MultiBlockStructure list = null;
	try {
		Scanner reader = new Scanner(file);
		while (reader.hasNextLine()) {
			String data = reader.nextLine();
			list = MultiBlockStructure.create(data, mapName);
		}
		reader.close();
		return list;
    } catch (FileNotFoundException e) {
    	System.out.println("An error occurred.");
    	e.printStackTrace();
    	return null;
    }
}