private int inventorySize(int level) {
		switch(level) {
			case 0:
				return 2;
			case 1:
				return 3;
			case 2:
				return 4;
			case 3:
				return 6;
			case 4:
				return 8;
			case 5:
				return 9;
			case 6:
				return 10;
		}
		return 0;
	}