public int swapOutside(int x, int y, ItemInInv item) throws InventoryException {
        List<Integer> hash  = checkBlockingItems(x, y, item);

        if(hash.size() == 1) {
            indexHold = seq.indexOf(hash.get(0));

            holdingItem = inv.get(hash.get(0));
            indexToSwap = nextFreeSequence();

            seq.set(indexHold, -1);
            seq.set(indexToSwap, (y*100)+x);

            putIntoInv(x, y, item);
            System.out.println("indexHold: " + indexHold + " indexToSwap: " + indexToSwap);
            return indexHold;
        }
        return -1;
    }