public class ContainerDeck extends Container
{
	private final int numRows;

	public ContainerDeck(InventoryPlayer playerInv, EntityPlayer player)
	{
		this.numRows = 2;

		for(int y = 0; y < this.numRows; y++)
		{
			for(int x = 0; x < 9; x++)
			{
				this.addSlotToContainer(new SlotItemInv(player.getHeldItemMainhand().getCapability(DeckDataCapability.CAPABILITY, null), x + y * 9, 8 + x * 18, (16 * y + 16) + y * 2));
			}
		}

		for (int i = 0; i < 3; ++i)
        {
            for (int j = 0; j < 9; ++j)
            {
                this.addSlotToContainer(new Slot(playerInv, j + i * 9 + 9, 8 + j * 18, 84 + i * 18));
            }
        }

        for (int k = 0; k < 9; ++k)
        {
            this.addSlotToContainer(new Slot(playerInv, k, 8 + k * 18, 142));
        }
	}

	/**
	 * Take a stack from the specified inventory slot.
	 */
	@Nullable
	public ItemStack transferStackInSlot(EntityPlayer playerIn, int index)
	{
		ItemStack itemstack = null;
		Slot slot = (Slot) this.inventorySlots.get(index);

		if (slot != null && slot.getHasStack())
		{
			ItemStack itemstack1 = slot.getStack();
			itemstack = itemstack1.copy();

			if (index < this.numRows * 9)
			{
				if (!this.mergeItemStack(itemstack1, this.numRows * 9, this.inventorySlots.size(), true))
				{
					return null;
				}
			} else if (!this.mergeItemStack(itemstack1, 0, this.numRows * 9, false))
			{
				return null;
			}

			if (itemstack1.stackSize == 0)
			{
				slot.putStack((ItemStack) null);
			} else
			{
				slot.onSlotChanged();
			}

			if (itemstack1.stackSize == itemstack.stackSize)
			{
				return null;
			}

			slot.onPickupFromSlot(playerIn, itemstack1);
		}

		return itemstack;
	}

	@Override
	public boolean canInteractWith(EntityPlayer playerIn)
	{
		return true;
	}

	@Override
	public ItemStack slotClick(int slot, int button, ClickType clickTypeIn, EntityPlayer player)
	{
		if (slot >= 0 && getSlot(slot) != null
				&& getSlot(slot).getStack() == player.getHeldItemMainhand())
		{
			return null;
		}
		return super.slotClick(slot, button, clickTypeIn, player);
	}
}