I've been using an IItemHandler (which, according to the Forge docs, we're supposed to use instead of IInventory) to handle the inventory of one of the processing blocks in my mod. However, I'm not sure how to get recipes with it. The Minecraft RecipeManager requires an IInventory as the second parameter of #getRecipe(), and I couldn't find a Forge RecipeManager nor a different method that would take an IItemHandler and return a recipe.

 

Does anyone know how I can get recipes using my IItemHandler?

 

Just for reference, here's what I'm trying to do:

public class GrinderTileEntity extends TileEntity implements ITickableTileEntity, INamedContainerProvider {
    private LazyOptional<IItemHandler> itemHandler = LazyOptional.of(this::createItemHandler);
    private LazyOptional<IEnergyStorage> energyHandler = LazyOptional.of(this::createEnergyHandler);
    private int counter = 0;

    public GrinderTileEntity() {
        super(TileEntityTypes.grinder);
    }

    @Override
    public void tick() {
        if (world.isRemote)
            return;

        //Nothing to do if we have no energy
        AtomicBoolean hasEnergy = new AtomicBoolean();
        energyHandler.ifPresent( e -> hasEnergy.set(e.getEnergyStored() > 0) );
        if (!hasEnergy.get())
            return;

        //Nothing to do if there isn't an item.
        AtomicReference<ItemStack> stack = new AtomicReference<>();
        itemHandler.ifPresent( h -> stack.set(h.getStackInSlot(0).copy()) );
        if(stack.get().isEmpty())
            return;

        AtomicReference<IItemHandler> inventory = new AtomicReference<>();
        itemHandler.ifPresent(inventory::set);

        //#getRecipe() is where it breaks, specifically inventory.get()
        IRecipe<?> recipe = world.getRecipeManager()
                .getRecipe(RecipeTypes.GRINDING, inventory.get(), world)
                .orElse(null);
	
    	//processing...
    }
  
   /* ************************************************
    * Used to create the IItemHandler for itemHandler
    ***************************************************/
	private IItemHandler createItemHandler() {
        return new ItemStackHandler(2) {
            @Override
            public boolean isItemValid(int slot, @Nonnull ItemStack stack) {
                return ItemTags.getCollection()
                        .get(ResourceLocation.tryCreate("forge:ores"))
                        .contains(stack.getItem())
                        && slot == 0;
            }

            @Nonnull
            @Override
            public ItemStack insertItem(int slot, @Nonnull ItemStack stack, boolean simulate) {
                if (slot != 0
                        || !ItemTags.getCollection()
                        .get(ResourceLocation.tryCreate("forge:ores"))
                        .contains(stack.getItem())
                ) {
                    return stack;
                }
                return super.insertItem(slot, stack, simulate);
            }

            @Override
            protected void onContentsChanged(int slot) {
                markDirty();
            }
        };
    }

  //other functions...
}

 

Thanks!

9 minutes ago, TheMikeste1 said:

Does anyone know how I can get recipes using my IItemHandler?

Create a RecipeWrapper it takes in a IItemHandlerModifiable and it's an IInventory.

Just now, Animefan8888 said:

Create a RecipeWrapper it takes in a IItemHandlerModifiable and it's an IInventory.

Oh, awesome. I didn't notice that class. Thanks!

@TheMikeste1

]https://github.com/MinecraftForge/MinecraftForge/blob/1.14.x/src/main/java/net/minecraftforge/items/wrapper/RecipeWrapper.java