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[SOLVED][1.8.9] TileEntityContainer per-slot max stack size possible?


iRhuel
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Hi, I'm a novice modder (and coder), and I need your help...!!!

 

I have a working furnace with multiple input slots (1 fuel and 1 output). All basic functionality is working properly. I'd like to implement some additional behavior, but for the life of me I can't figure out how. I did an initial search and was surprised to turn up nothing about this. All the info I found was to set behaviors for the entire entity, not individual slots.

[*]I'd like to restrict maxstacksize for input slots to 1, and leave maxstacksize for fuel and output slots at default (64).

[*]I'd also like to be able to restrict valid ItemStack for input slots based on oredict tags (ore* and dust*)

 

PART 1

 

I've been able to get correct shift-click behavior with custom Slot class, custom mergeItemStack(), and transferStackInSlot() in the Container class. But this yields odd left-click behavior if implemented (left clicking an occupied input slot while holding a matching ItemStack withdraws the stack from the slot and increases the held stack, even past stacksize limits) so I've reverted it.

 

I also can't get automation (hoppers) to change behavior (round robin) or respect the custom inputSlot's stacksize limits, without setting the TileEntity'sgetInventoryStackLimit() to return 1 instead of 64. This of course causes problems for the fuel and output slots.

 

PART 2

 

Honestly have no clue where to begin. I looked through the oredict class, but couldn't find any way to make a given ItemStack return its oredict tag.

 

CODE

 

Tile Entity:

 

public class TileCupolaFurnace extends TileEntity implements ITickable, IInventory {

    // index 0-3 = input, 4 = fuel, 5 = output
    private ItemStack[] furnaceItemStacks = new ItemStack[6];

    private int burnTimeRemaining;  // number of ticks remaining on current piece of fuel
    private int fuelBurnTime;  // initial fuel value of the currently burning fuel
    private int[] itemCookTime = new int[4];   // current cook time for input slots

    private static final int COOK_TIME_FOR_COMPLETION = 400;  // the number of ticks to smelt

    @Override
    public int getSizeInventory() {
        return furnaceItemStacks.length;
    }

    @Override
    public ItemStack getStackInSlot(int index) {
        return furnaceItemStacks[index];
    }

    @Override
    public ItemStack decrStackSize(int index, int count) {
        ItemStack stackInSlot = furnaceItemStacks[index];
        ItemStack stackRemoved;

        if (stackInSlot == null)
            return null;

        if (stackInSlot.stackSize <= count) {
            stackRemoved = stackInSlot;
            setInventorySlotContents(index, null);
        } else {
            stackRemoved = stackInSlot.splitStack(count);
            if (stackInSlot.stackSize == 0)
                setInventorySlotContents(index, null);
        }
        markDirty();
        return stackRemoved;
    }

    @Override
    public void setInventorySlotContents(int index, ItemStack stack) {
        furnaceItemStacks[index] = stack;

        if (stack != null && stack.stackSize > getInventoryStackLimit())
            stack.stackSize = getInventoryStackLimit();

        markDirty();
    }

    @Override
    public int getInventoryStackLimit() {
        return 64;
    }

    @Override
    public boolean isUseableByPlayer(EntityPlayer player) {
        if (this.worldObj.getTileEntity(this.pos) != this) return false;
        final double X_CENTRE_OFFSET = 0.5;
        final double Y_CENTRE_OFFSET = 0.5;
        final double Z_CENTRE_OFFSET = 0.5;
        final double MAXIMUM_DISTANCE_SQ = 8.0 * 8.0;
        return player.getDistanceSq(pos.getX() + X_CENTRE_OFFSET, pos.getY() + Y_CENTRE_OFFSET, pos.getZ() + Z_CENTRE_OFFSET) < MAXIMUM_DISTANCE_SQ;
    }

    @Override
    public boolean isItemValidForSlot(int index, ItemStack stack) {
        return index != 5 && (index != 4 || isItemFuel(stack));
    }

    @Override
    public void update() {
        for (int i = 0; i < 4; i++) {
            ItemStack input = furnaceItemStacks[i];
            if (input != null && canSmelt(i)) {
                startBurnFuel();
                cookItem(i);
            }
            else {
                if (input == null) itemCookTime[i] = 0;
                if (itemCookTime[i] > 0 && !isBurning()) itemCookTime[i]--;
            }
        }
        if (isBurning()) burnTimeRemaining--;
    }

    private boolean isBurning() {
        return this.burnTimeRemaining > 0;
    }

    private void startBurnFuel() {
        if (!this.isBurning()) {
            boolean inventoryChanged = false;
            if (this.furnaceItemStacks[4] != null && isItemFuel(this.furnaceItemStacks[4]) && this.furnaceItemStacks[4].stackSize > 0) {
                this.burnTimeRemaining = this.fuelBurnTime = getFuelBurnTime(this.furnaceItemStacks[4]);
                this.furnaceItemStacks[4].stackSize--;
                inventoryChanged = true;
                if (this.furnaceItemStacks[4].stackSize == 0)
                    this.furnaceItemStacks[4] = null;
            }
            if (inventoryChanged) markDirty();
        }
    }

    private boolean canSmelt(int index) {
        ItemStack input = this.furnaceItemStacks[index];
        ItemStack output = FurnaceRecipes.instance().getSmeltingResult(input);
        if (output == null) return false;
        if (this.furnaceItemStacks[5] == null) return true;
        if (!this.furnaceItemStacks[5].isItemEqual(output)) return false;
        int result = this.furnaceItemStacks[5].stackSize + output.stackSize;
        return result <= getInventoryStackLimit() && result <= this.furnaceItemStacks[5].getMaxStackSize();
    }

    private void cookItem(int index) {
        if (isBurning())
            itemCookTime[index]++;
        if (itemCookTime[index] == COOK_TIME_FOR_COMPLETION) {
            smeltItem(index);
            itemCookTime[index] = 0;
        }
    }

    private void smeltItem(int index) {
        ItemStack smeltingResult = FurnaceRecipes.instance().getSmeltingResult(this.furnaceItemStacks[index]);

        if (this.furnaceItemStacks[5] == null)
            this.furnaceItemStacks[5] = smeltingResult.copy();
        else if (this.furnaceItemStacks[5].getItem() == smeltingResult.getItem())
            this.furnaceItemStacks[5].stackSize += smeltingResult.stackSize;
        this.furnaceItemStacks[index].stackSize--;
        if (furnaceItemStacks[index].stackSize <= 0)
            furnaceItemStacks[index] = null;
        markDirty();
    }

    public boolean isItemFuel(ItemStack stack) {
        return stack != null && getFuelBurnTime(stack) > 0;
    }

    private int getFuelBurnTime(ItemStack stack) {
        if (stack == null) {
            return 0;
        } else {
            Item item = stack.getItem();

            if (item instanceof ItemBlock && Block.getBlockFromItem(item) != Blocks.air) {
                Block block = Block.getBlockFromItem(item);
                if (block == Blocks.coal_block) return 16000;
                else return 0;
            }
            if (item == Items.coal) return 1600;
        }
        return 0;
    }

    public int getBurnRemainingSeconds() {
        if (burnTimeRemaining <= 0) return 0;
        return burnTimeRemaining / 20;
    }

    public double getBurnRemainingRatio() {
        if (burnTimeRemaining <= 0) return 0;
        double ratio = (double) burnTimeRemaining / (double) fuelBurnTime;
        return MathHelper.clamp_double(ratio, 0.0, 1.0);
    }

    public double getCookProgressRatio(int index) {
        double ratio = (double) itemCookTime[index] / (double) COOK_TIME_FOR_COMPLETION;
        return MathHelper.clamp_double(ratio, 0.0, 1.0);
    }

    @Override
    public void writeToNBT(NBTTagCompound compound) {
        super.writeToNBT(compound);

        NBTTagList tagList = new NBTTagList();

        for (int i = 0; i < this.furnaceItemStacks.length; i++) {
            if (this.furnaceItemStacks[i] != null) {
                NBTTagCompound stackTag = new NBTTagCompound();
                stackTag.setByte("Slot", (byte) i);
                this.furnaceItemStacks[i].writeToNBT(stackTag);
                tagList.appendTag(stackTag);
            }
        }
        compound.setTag("Items", tagList);
        compound.setInteger("burnTimeRemaining", this.burnTimeRemaining);
        compound.setInteger("fuelBurnTime", this.fuelBurnTime);
        compound.setTag("itemCookTime", new NBTTagIntArray(this.itemCookTime));
    }

    @Override
    public void readFromNBT(NBTTagCompound compound) {
        super.readFromNBT(compound);

        final byte NBT_TYPE = 10;
        NBTTagList tagList = compound.getTagList("Items", NBT_TYPE);

        for (int i = 0; i < tagList.tagCount(); i++) {
            NBTTagCompound stackTag = tagList.getCompoundTagAt(i);
            int slot = stackTag.getByte("Slot") & 255;
            this.furnaceItemStacks[slot] = ItemStack.loadItemStackFromNBT(stackTag);
        }
        this.burnTimeRemaining = compound.getInteger("burnTimeRemaining");
        this.fuelBurnTime = compound.getInteger("fuelBurnTime");
        this.itemCookTime = Arrays.copyOf(compound.getIntArray("itemCookTime"), 4);
    }

    @Override
    public void clear() {
        Arrays.fill(furnaceItemStacks, null);
    }

    @Override
    public String getName() {
        return "container.cupola_furnace.name";
    }

    @Override
    public boolean hasCustomName() {
        return false;
    }

    @Override
    public IChatComponent getDisplayName() {
        return this.hasCustomName() ? new ChatComponentText(this.getName()) : new ChatComponentTranslation(this.getName());
    }

    @Override
    public Packet getDescriptionPacket() {
        NBTTagCompound nbtTagCompound = new NBTTagCompound();
        writeToNBT(nbtTagCompound);
        int metadata = getBlockMetadata();
        return new S35PacketUpdateTileEntity(this.pos, metadata, nbtTagCompound);
    }

    @Override
    public void onDataPacket(NetworkManager net, S35PacketUpdateTileEntity pkt) {
        readFromNBT(pkt.getNbtCompound());
    }

    @Override
    public ItemStack removeStackFromSlot(int index) {
        ItemStack stackremoved = furnaceItemStacks[index];

        if (stackremoved != null)
            setInventorySlotContents(index, null);

        return stackremoved;
    }

    @Override
    public void openInventory(EntityPlayer player) {
    }

    @Override
    public void closeInventory(EntityPlayer player) {
    }

    @Override
    public int getField(int id) {
        if (id == 0) return this.burnTimeRemaining;
        if (id == 1) return this.fuelBurnTime;
        if (id > 1 && id <= 5) return itemCookTime[id - 2];
        System.err.println("Invalid field ID in TileCupolaFurnace.getField:" + id);
        return 0;
    }

    @Override
    public void setField(int id, int value) {
        if (id == 0) this.burnTimeRemaining = value;
        else if (id == 1) this.fuelBurnTime = value;
        else if (id > 1 && id <= 5) this.itemCookTime[id - 2] = value;
        else System.err.println("Invalid field ID in TileCupolaFurnace.setField:" + id);
    }

    @Override
    public int getFieldCount() {
        return 6;
    }
}

 

 

Container:

 

public class ContainerCupolaFurnace extends Container {

    /**
     * SLOTS                            INDEX
     * <p>
     * 0-8 = hotbar slots               0-8
     * 9-35 = player inventory slots    9-35
     * <p>
     * 36-41 = furnace slots
     * 36-39 = input slots              0-3
     * 40 = fuel slot                   4
     * 41 = output slot                 5
     */

    private TileCupolaFurnace tileCupolaFurnace;

    public ContainerCupolaFurnace(InventoryPlayer invPlayer, TileCupolaFurnace tileCupolaFurnace) {
        this.tileCupolaFurnace = tileCupolaFurnace;

        // hotbar slots
        for (int x = 0; x < 9; x++) {
            addSlotToContainer(new Slot(invPlayer, x, 8 + 18 * x, 134));
        }
        // player inv slots
        for (int y = 0; y < 3; ++y) {
            for (int x = 0; x < 9; ++x) {
                addSlotToContainer(new Slot(invPlayer, x + y * 9 + 9, 8 + x * 18, 76 + y * 18));
            }
        }
        // furnace input slots
        for (int y = 0; y < 2; y++) {
            for (int x = 0; x < 2; x++) {
                addSlotToContainer(new inputSlot(tileCupolaFurnace, x + y * 2, 24 + x * 21, 24 + y * 18));
            }
        }
        // furnace fuel slot
        addSlotToContainer(new Slot(tileCupolaFurnace, 4, 80, 51));
        //furnace output slot
        addSlotToContainer(new Slot(tileCupolaFurnace, 5, 125, 27));
    }

    @Override
    public boolean canInteractWith(EntityPlayer playerIn) {
        return this.tileCupolaFurnace.isUseableByPlayer(playerIn);
    }

    @Override
    public ItemStack transferStackInSlot(EntityPlayer playerIn, int index) {
        Slot sourceSlot = this.inventorySlots.get(index);
        if (sourceSlot == null || !sourceSlot.getHasStack()) return null;
        ItemStack sourceStack = sourceSlot.getStack();
        ItemStack copyOfSourceStack = sourceStack.copy();

        if (index >= 0 && index < 36) {
            if (tileCupolaFurnace.isItemFuel(sourceStack)) {
                if (!mergeItemStack(sourceStack, 40, 41, false)) {
                    return null;
                }
            }
            else if (!mergeItemStack(sourceStack, 36, 40, false)) {
                return null;
            }
        } else if (index >= 36 && index < 42) {
            if (!mergeItemStack(sourceStack, 0, 36, false)) {
                return null;
            }
        } else {
            System.err.print("Invalid slotIndex:" + index);
            return null;
        }

        if (sourceStack.stackSize == 0) {
            sourceSlot.putStack(null);
        } else {
            sourceSlot.onSlotChanged();
        }

        sourceSlot.onPickupFromSlot(playerIn, sourceStack);
        return copyOfSourceStack;
    }

//    private boolean mergeInputStack(ItemStack stack, int startIndex, int endIndex, boolean useEndIndex) {
//        boolean success = false;
//        int index = startIndex;
//
//        if (useEndIndex)
//            index = endIndex - 1;
//
//        Slot slot;
//        ItemStack stackInSlot;
//
//        if (stack.isStackable()) {
//            while (stack.stackSize > 0 && (!useEndIndex && index < endIndex || useEndIndex && index >= startIndex)) {
//                slot = this.inventorySlots.get(index);
//                stackInSlot = slot.getStack();
//
//                if (stackInSlot != null && stackInSlot.getItem() == stack.getItem() && (!stack.getHasSubtypes() || stack.getMetadata() == stackInSlot.getMetadata()) && ItemStack.areItemStackTagsEqual(stack, stackInSlot)) {
//                    int l = stackInSlot.stackSize + stack.stackSize;
//                    int maxsize = Math.min(stack.getMaxStackSize(), slot.getItemStackLimit(stack));
//
//                    if (l <= maxsize) {
//                        stack.stackSize = 0;
//                        stackInSlot.stackSize = l;
//                        slot.onSlotChanged();
//                        success = true;
//                    } else if (stackInSlot.stackSize < maxsize) {
//                        stack.stackSize -= stack.getMaxStackSize() - stackInSlot.stackSize;
//                        stackInSlot.stackSize = stack.getMaxStackSize();
//                        slot.onSlotChanged();
//                        success = true;
//                    }
//                }
//
//                if (useEndIndex) {
//                    --index;
//                } else {
//                    ++index;
//                }
//            }
//        }
//
//        if (stack.stackSize > 0) {
//            if (useEndIndex) {
//                index = endIndex - 1;
//            } else {
//                index = startIndex;
//            }
//
//            while (!useEndIndex && index < endIndex || useEndIndex && index >= startIndex && stack.stackSize > 0) {
//                slot = this.inventorySlots.get(index);
//                stackInSlot = slot.getStack();
//
//                // Forge: Make sure to respect isItemValid in the slot.
//                if (stackInSlot == null && slot.isItemValid(stack)) {
//                    if (stack.stackSize < slot.getItemStackLimit(stack)) {
//                        slot.putStack(stack.copy());
//                        stack.stackSize = 0;
//                        success = true;
//                        break;
//                    } else {
//                        ItemStack newstack = stack.copy();
//                        newstack.stackSize = slot.getItemStackLimit(stack);
//                        slot.putStack(newstack);
//                        stack.stackSize -= slot.getItemStackLimit(stack);
//                        success = true;
//                    }
//                }
//
//                if (useEndIndex) {
//                    --index;
//                } else {
//                    ++index;
//                }
//            }
//        }
//
//        return success;
//    }

    @Override
    public void onContainerClosed(EntityPlayer playerIn) {
        super.onContainerClosed(playerIn);
        this.tileCupolaFurnace.closeInventory(playerIn);
    }

    private int[] cachedFields;

    @Override
    public void detectAndSendChanges() {
        super.detectAndSendChanges();

        boolean allFieldsHaveChanged = false;
        boolean fieldHasChanged[] = new boolean[tileCupolaFurnace.getFieldCount()];
        if (cachedFields == null) {
            cachedFields = new int[tileCupolaFurnace.getFieldCount()];
            allFieldsHaveChanged = true;
        }
        for (int i = 0; i < cachedFields.length; ++i) {
            if (allFieldsHaveChanged || cachedFields[i] != tileCupolaFurnace.getField(i)) {
                cachedFields[i] = tileCupolaFurnace.getField(i);
                fieldHasChanged[i] = true;
            }
        }
        for (ICrafting icrafting : this.crafters) {
            for (int fieldID = 0; fieldID < tileCupolaFurnace.getFieldCount(); ++fieldID) {
                if (fieldHasChanged[fieldID]) {
                    icrafting.sendProgressBarUpdate(this, fieldID, cachedFields[fieldID]);
                }
            }
        }
    }

    private class inputSlot extends Slot {

        inputSlot(IInventory inventoryIn, int index, int xPosition, int yPosition) {
            super(inventoryIn, index, xPosition, yPosition);
        }

        @Override
        public int getSlotStackLimit() {
            return 64;
        }
    }

    @SideOnly(Side.CLIENT)
    @Override
    public void updateProgressBar(int id, int data) {
        tileCupolaFurnace.setField(id, data);
    }
}

 

 

Thanks for any help!

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Use your custom slot for the slot that should have a max stack size of 1 and return 1 for the Slot#getSlotStackLimit method.

 

However, the vanilla #mergeStackInSlot implementations DO NOT check the slot's stack limit (at least as of 1.8 - maybe it has changed), and also has trouble handling slot limits of 1.

 

Here is an implementation I came up with for #mergeStackInSlot - there are others out there as well that do the same thing.

 

As for the shift-clicking moving items into the wrong slots, that has to do with how you choose to implement #transferStackInSlot - you can find some information about that in this tutorial, though I recommend you skip to the final spoiler section first, as that is the most recent.

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!!!

 

Hey, it's you! Your tutorials (and others') are the reason I've gotten this far. Thanks for putting those together!

 

I've re-implemented custom Slot classes and MergeStackInSlot() to handle the Container interactions. This time I've also implemented more comprehensive logic in TileEntity.isItemValidForSlot() to handle automated insertion, to catch itemstack.stackSize > 1 for those slots. Hopefully that'll cover all of it.

 

The errant clicking behavior actually happens on regular click and not shift click, as described in the OP:

(If for whatever reason the itemstack in the slot has stacksize > 1) left clicking an occupied input slot while holding a matching ItemStack withdraws the stack from the slot and increases the held stack, even past stacksize limits, so I've reverted it.

 

Hopefully now it's a moot point, unless there's a way to get an itemstack > 1 into a slot that I'm missing. I still want to fix that behavior, just in case. Thanks for the help, and again for the tutorials.

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