private char getCharForCellType(CellType type) {
		switch (type) {
			case EMPTY:
				return '0';
			case HERO:
				return 'H';
			case EXIT:
				return '#';
			case WALL:
				return 'W';
			case PATH:
				return 'P';
			default:
				return '?';			
		}
	}