[1.16] How can I get Crafting Recipes in my Tile Entity

[kiou.23]

I'm trying to make a tile entity that would have a superset of the Crafting Table functionality. However the Crafting Table doesn't have a Tile Entity, and I'm having a hard time trying to get the Crafting Matrix. The CraftingInventory class requires a container to be passed in, so I tried using an ItemStackHandler, but the world.getRecipeManager().getRecipe() method requires a Crafting Inventory to be passed in to find the recipe. And I just can't see how to get through this.

any help?

[TheGreyGhost]

Howdy.

Is there any reason you can't create your own IInventory?

Or a Container to wrap your ItemStackHandler?

For example like this:

https://github.com/TheGreyGhost/MinecraftByExample/blob/master/src/main/java/minecraftbyexample/mbe30_inventory_basic/ChestContents.java

or this:

https://github.com/TheGreyGhost/MinecraftByExample/blob/master/src/main/java/minecraftbyexample/mbe30_inventory_basic/ContainerBasic.java

 

You might also find it helpful to make a copy of the vanilla code and refactor it (change the obfuscated method and variable names to something meaningful) to help you understand how it works and perhaps find a shortcut if you don't need the full CraftingInventory functionality.

 

-TGG

 

 

 

 

 

[kiou.23]

13 minutes ago, TheGreyGhost said:

Howdy.

Is there any reason you can't create your own IInventory?

Or a Container to wrap your ItemStackHandler?

It need to be able to craft any crafting recipe as well, so I would need to use the getRecipe() method, passing IRecipeType.CRAFTING

but then the IInventory parameter needs to be of CraftingInventory

or is there a better way to get the recipes?

 

this is my current code:

public class ModWorkbenchTileEntity extends TileEntity implements INamedContainerProvider {

    final ItemStackHandler craftMatrix = new ItemStackHandler(9);

    public ModWorkbenchTileEntity() {
        super(ModTileEntityTypes.MOD_WORKBENCH.get());
    }

    private Optional<ICraftingRecipe> getRecipe() {
        ItemStack[] stacks = new ItemStack[9];
        for (int i = 0; i < craftMatrix.getSlots(); i++)
            stacks[i] = (craftMatrix.getStackInSlot(i));
        Inventory inv = new Inventory(stacks);

      	// This errors because inv needs to be a CraftingInventory
        return world.getRecipeManager().getRecipe(IRecipeType.CRAFTING, inv, world);
    }


  	//this is unimplemented and isn't relevant to the issue
    @Override
    public ITextComponent getDisplayName() {
        return null;
    }

    @Override
    public Container createMenu(int windowId, PlayerInventory playerInv, PlayerEntity player) {
        return null;
    }
}

 

[kiou.23]

2 hours ago, diesieben07 said:

You can make a subclass of CraftingInventory that overrides all methods to delegate to your IItemHandler instead.

like so?

public class ModWorkbenchInventory extends CraftingInventory {

    private final ModWorkbenchItemStackHandler itemStackHandler;

    public ModWorkbenchInventory(ModWorkbenchItemStackHandler itemStackHandler) {
        super(null, 3, 3);

        this.itemStackHandler = itemStackHandler;
    }

    @Override public int getHeight() { return 3; }

    @Override public int getWidth() { return 3; }

    @Override public ItemStack getStackInSlot(int index) { return itemStackHandler.getStackInSlot(index); }

    //

    @Override public int getSizeInventory() { return itemStackHandler.getSlots(); }

    @Override
    public boolean isEmpty() {
        for(int slot = 0; slot < itemStackHandler.getSlots(); slot++) {
            if (!itemStackHandler.getStackInSlot(slot).isEmpty()) {
                return false;
            }
        }

        return true;
    }

    @Override public ItemStack removeStackFromSlot(int index) { return ItemStack.EMPTY; }

    @Override public ItemStack decrStackSize(int index, int count) { return ItemStack.EMPTY; }

    @Override public void setInventorySlotContents(int index, ItemStack stack) {}

    @Override public void markDirty() {}

    @Override public void clear() {}

    @Override public void fillStackedContents(RecipeItemHelper helper) {}
}

 

public class ModWorkbenchItemStackHandler extends ItemStackHandler {

    public ModWorkbenchItemStackHandler() {
        super(9);
    }

    @Override
    public boolean isItemValid(int slot, ItemStack stack) {
        if (slot < 0 || slot >= 9)
            throw new IllegalArgumentException("Invalid slot number: " + slot);

        if (stack.isEmpty()) return false;

        return !(stack.getItem() instanceof BackpackItem);
    }
}

 

public class ModWorkbenchTileEntity extends TileEntity implements INamedContainerProvider {

    final ModWorkbenchItemStackHandler craftMatrix = new ModWorkbenchItemStackHandler();

    public ModWorkbenchTileEntity() {
        super(ModTileEntityTypes.MOD_WORKBENCH.get());
    }

    private Optional<ICraftingRecipe> getRecipe() {
        ItemStack[] stacks = new ItemStack[9];
        for (int i = 0; i < craftMatrix.getSlots(); i++)
            stacks[i] = (craftMatrix.getStackInSlot(i));

        return world.getRecipeManager().getRecipe(IRecipeType.CRAFTING, new ModWorkbenchInventory(craftMatrix), world);
    }


    @Override
    public ITextComponent getDisplayName() {
        return null;
    }

    @Override
    public Container createMenu(int windowId, PlayerInventory playerInv, PlayerEntity player) {
        return null;
    }
}

 

[kiou.23]

Just now, diesieben07 said:

Looks right, although getDisplayName and createMenu should not return null.

Yeah, I haven't implemented those methods yet

Just wanted to solve the crafting Inventory problem

Thanks