public boolean add(Item input) {
		if (isFull())
			return false;
		if (input == null)
			return false;
		for (int h = 0; h < height; h++) {
			for (int w = 0; w < width; w++) {
				if (inventory[h][w] == null) {
					inventory[h][w] = input;
					return true;
				}
			}
		}
		return false;
	}