    001    package net.minecraft.inventory;
    002
    003    import net.minecraft.entity.player.EntityPlayer;
    004    import net.minecraft.item.ItemStack;
    005    import net.minecraft.tileentity.TileEntityDispenser;
    006
    007    public class ContainerDispenser extends Container
    008    {
    009        private TileEntityDispenser tileEntityDispenser;
    010
    011        public ContainerDispenser(IInventory par1IInventory, TileEntityDispenser par2TileEntityDispenser)
    012        {
    013            this.tileEntityDispenser = par2TileEntityDispenser;
    014            int var3;
    015            int var4;
    016
    017            for (var3 = 0; var3 < 3; ++var3)
    018            {
    019                for (var4 = 0; var4 < 3; ++var4)
    020                {
    021                    this.addSlotToContainer(new Slot(par2TileEntityDispenser, var4 + var3 * 3, 62 + var4 * 18, 17 + var3 * 18));
    022                }
    023            }
    024
    025            for (var3 = 0; var3 < 3; ++var3)
    026            {
    027                for (var4 = 0; var4 < 9; ++var4)
    028                {
    029                    this.addSlotToContainer(new Slot(par1IInventory, var4 + var3 * 9 + 9, 8 + var4 * 18, 84 + var3 * 18));
    030                }
    031            }
    032
    033            for (var3 = 0; var3 < 9; ++var3)
    034            {
    035                this.addSlotToContainer(new Slot(par1IInventory, var3, 8 + var3 * 18, 142));
    036            }
    037        }
    038
    039        public boolean canInteractWith(EntityPlayer par1EntityPlayer)
    040        {
    041            return this.tileEntityDispenser.isUseableByPlayer(par1EntityPlayer);
    042        }
    043
    044        /**
    045         * Called when a player shift-clicks on a slot. You must override this or you will crash when someone does that.
    046         */
    047        public ItemStack transferStackInSlot(EntityPlayer par1EntityPlayer, int par2)
    048        {
    049            ItemStack var3 = null;
    050            Slot var4 = (Slot)this.inventorySlots.get(par2);
    051
    052            if (var4 != null && var4.getHasStack())
    053            {
    054                ItemStack var5 = var4.getStack();
    055                var3 = var5.copy();
    056
    057                if (par2 < 9)
    058                {
    059                    if (!this.mergeItemStack(var5, 9, 45, true))
    060                    {
    061                        return null;
    062                    }
    063                }
    064                else if (!this.mergeItemStack(var5, 0, 9, false))
    065                {
    066                    return null;
    067                }
    068
    069                if (var5.stackSize == 0)
    070                {
    071                    var4.putStack((ItemStack)null);
    072                }
    073                else
    074                {
    075                    var4.onSlotChanged();
    076                }
    077
    078                if (var5.stackSize == var3.stackSize)
    079                {
    080                    return null;
    081                }
    082
    083                var4.onPickupFromSlot(par1EntityPlayer, var5);
    084            }
    085
    086            return var3;
    087        }
    088    }