ContainerDispenser.java

package net.minecraft.inventory;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.ItemStack;
import net.minecraft.tileentity.TileEntityDispenser;

public class ContainerDispenser extends Container
{
    private TileEntityDispenser tileEntityDispenser;

    public ContainerDispenser(IInventory par1IInventory, TileEntityDispenser par2TileEntityDispenser)
    {
        this.tileEntityDispenser = par2TileEntityDispenser;
        int i;
        int j;

        for (i = 0; i < 3; ++i)
        {
            for (j = 0; j < 3; ++j)
            {
                this.addSlotToContainer(new Slot(par2TileEntityDispenser, j + i * 3, 62 + j * 18, 17 + i * 18));
            }
        }

        for (i = 0; i < 3; ++i)
        {
            for (j = 0; j < 9; ++j)
            {
                this.addSlotToContainer(new Slot(par1IInventory, j + i * 9 + 9, 8 + j * 18, 84 + i * 18));
            }
        }

        for (i = 0; i < 9; ++i)
        {
            this.addSlotToContainer(new Slot(par1IInventory, i, 8 + i * 18, 142));
        }
    }

    public boolean canInteractWith(EntityPlayer par1EntityPlayer)
    {
        return this.tileEntityDispenser.isUseableByPlayer(par1EntityPlayer);
    }

    /**
     * Called when a player shift-clicks on a slot. You must override this or you will crash when someone does that.
     */
    public ItemStack transferStackInSlot(EntityPlayer par1EntityPlayer, int par2)
    {
        ItemStack itemstack = null;
        Slot slot = (Slot)this.inventorySlots.get(par2);

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

            if (par2 < 9)
            {
                if (!this.mergeItemStack(itemstack1, 9, 45, true))
                {
                    return null;
                }
            }
            else if (!this.mergeItemStack(itemstack1, 0, 9, false))
            {
                return null;
            }

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

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

            slot.onPickupFromSlot(par1EntityPlayer, itemstack1);
        }

        return itemstack;
    }
}