001package net.minecraft.inventory;
002
003import net.minecraft.entity.player.EntityPlayer;
004import net.minecraft.item.ItemStack;
005
006public class ContainerChest extends Container
007{
008    private IInventory lowerChestInventory;
009    private int numRows;
010
011    public ContainerChest(IInventory par1IInventory, IInventory par2IInventory)
012    {
013        this.lowerChestInventory = par2IInventory;
014        this.numRows = par2IInventory.getSizeInventory() / 9;
015        par2IInventory.openChest();
016        int var3 = (this.numRows - 4) * 18;
017        int var4;
018        int var5;
019
020        for (var4 = 0; var4 < this.numRows; ++var4)
021        {
022            for (var5 = 0; var5 < 9; ++var5)
023            {
024                this.addSlotToContainer(new Slot(par2IInventory, var5 + var4 * 9, 8 + var5 * 18, 18 + var4 * 18));
025            }
026        }
027
028        for (var4 = 0; var4 < 3; ++var4)
029        {
030            for (var5 = 0; var5 < 9; ++var5)
031            {
032                this.addSlotToContainer(new Slot(par1IInventory, var5 + var4 * 9 + 9, 8 + var5 * 18, 103 + var4 * 18 + var3));
033            }
034        }
035
036        for (var4 = 0; var4 < 9; ++var4)
037        {
038            this.addSlotToContainer(new Slot(par1IInventory, var4, 8 + var4 * 18, 161 + var3));
039        }
040    }
041
042    public boolean canInteractWith(EntityPlayer par1EntityPlayer)
043    {
044        return this.lowerChestInventory.isUseableByPlayer(par1EntityPlayer);
045    }
046
047    /**
048     * Called when a player shift-clicks on a slot. You must override this or you will crash when someone does that.
049     */
050    public ItemStack transferStackInSlot(EntityPlayer par1EntityPlayer, int par2)
051    {
052        ItemStack var3 = null;
053        Slot var4 = (Slot)this.inventorySlots.get(par2);
054
055        if (var4 != null && var4.getHasStack())
056        {
057            ItemStack var5 = var4.getStack();
058            var3 = var5.copy();
059
060            if (par2 < this.numRows * 9)
061            {
062                if (!this.mergeItemStack(var5, this.numRows * 9, this.inventorySlots.size(), true))
063                {
064                    return null;
065                }
066            }
067            else if (!this.mergeItemStack(var5, 0, this.numRows * 9, false))
068            {
069                return null;
070            }
071
072            if (var5.stackSize == 0)
073            {
074                var4.putStack((ItemStack)null);
075            }
076            else
077            {
078                var4.onSlotChanged();
079            }
080        }
081
082        return var3;
083    }
084
085    /**
086     * Callback for when the crafting gui is closed.
087     */
088    public void onCraftGuiClosed(EntityPlayer par1EntityPlayer)
089    {
090        super.onCraftGuiClosed(par1EntityPlayer);
091        this.lowerChestInventory.closeChest();
092    }
093
094    /**
095     * Return this chest container's lower chest inventory.
096     */
097    public IInventory getLowerChestInventory()
098    {
099        return this.lowerChestInventory;
100    }
101}