@Override
  public void update() {
    if (--remainingDelay > 0) return;

    IInventory real = inventoryProvider().getInventory();
    int side = inventoryProvider().getInterfacedSide();
    if (real == null || side < 0) return;

    InventoryWrapper inv = InventoryWrapper.wrapInventory(real).setSlotsFromSide(side);
    InventoryWrapper filt = InventoryWrapper.wrapInventory(filter).setSlotsAll();

    List<ItemKey> checked = new ArrayList<ItemKey>(9);

    boolean requestAttempted = false;
    boolean requestedSomething = false;

    for (int i = 0; i < filter.getSizeInventory(); i++) {
      ItemKeyStack keyStack = ItemKeyStack.get(filter.getStackInSlot(i));

      if (keyStack == null || checked.contains(keyStack.key())) continue;

      int toRequest = filt.getItemCount(keyStack.key());
      int inInventory = inv.getItemCount(keyStack.key()) + getEnroute(keyStack.key());
      int missing = toRequest - inInventory;

      if (missing <= 0 || (requestWhenEmpty && inInventory > 0)) continue;

      RequestConsole req = new RequestConsole().setDestination(routeLayer().getRequester());
      req.setCrafting(true).setPulling(true).setPartials(true);
      ItemKeyStack request = ItemKeyStack.get(keyStack.key(), missing);
      req.makeRequest(request);

      requestAttempted = true;

      if (req.requested() > 0) {
        addToRequestList(request.key(), req.requested());
        requestedSomething = true;
      }
    }
    if (requestAttempted)
      RouteFX.spawnType1(
          RouteFX.color_request, 8, routeLayer().getCoords(), routeLayer().getWorld());

    if (requestAttempted && requestedSomething) operationsWithoutRequest = 0;
    else operationsWithoutRequest++;

    remainingDelay = operationDelay() + throttleDelay();
  }
 public void addFilterInfo(List<String> list) {
   list.add(EnumChatFormatting.GRAY + "Stock: ");
   boolean added = false;
   for (int i = 0; i < filter.getSizeInventory(); i++) {
     ItemStack stack = filter.getStackInSlot(i);
     if (stack != null) {
       list.add(
           EnumChatFormatting.GRAY
               + " - "
               + stack.getDisplayName()
               + " ("
               + stack.stackSize
               + ")");
       added = true;
     }
   }
   if (!added) list.add(EnumChatFormatting.GRAY + " - empty");
 }