ContainerBeacon.java

package net.minecraft.inventory;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.init.Items;
import net.minecraft.item.ItemStack;

public class ContainerBeacon extends Container
{
    private IInventory tileBeacon;

    /**
     * This beacon's slot where you put in Emerald, Diamond, Gold or Iron Ingot.
     */
    private final ContainerBeacon.BeaconSlot beaconSlot;
    private static final String __OBFID = "CL_00001735";

    public ContainerBeacon(IInventory p_i45804_1_, IInventory p_i45804_2_)
    {
        this.tileBeacon = p_i45804_2_;
        this.addSlotToContainer(this.beaconSlot = new ContainerBeacon.BeaconSlot(p_i45804_2_, 0, 136, 110));
        byte var3 = 36;
        short var4 = 137;
        int var5;

        for (var5 = 0; var5 < 3; ++var5)
        {
            for (int var6 = 0; var6 < 9; ++var6)
            {
                this.addSlotToContainer(new Slot(p_i45804_1_, var6 + var5 * 9 + 9, var3 + var6 * 18, var4 + var5 * 18));
            }
        }

        for (var5 = 0; var5 < 9; ++var5)
        {
            this.addSlotToContainer(new Slot(p_i45804_1_, var5, var3 + var5 * 18, 58 + var4));
        }
    }

    public void onCraftGuiOpened(ICrafting p_75132_1_)
    {
        super.onCraftGuiOpened(p_75132_1_);
        p_75132_1_.func_175173_a(this, this.tileBeacon);
    }

    public IInventory func_180611_e()
    {
        return this.tileBeacon;
    }

    public boolean canInteractWith(EntityPlayer playerIn)
    {
        return this.tileBeacon.isUseableByPlayer(playerIn);
    }

    /**
     * Take a stack from the specified inventory slot.
     */
    public ItemStack transferStackInSlot(EntityPlayer playerIn, int index)
    {
        ItemStack var3 = null;
        Slot var4 = (Slot)this.inventorySlots.get(index);

        if (var4 != null && var4.getHasStack())
        {
            ItemStack var5 = var4.getStack();
            var3 = var5.copy();

            if (index == 0)
            {
                if (!this.mergeItemStack(var5, 1, 37, true))
                {
                    return null;
                }

                var4.onSlotChange(var5, var3);
            }
            else if (!this.beaconSlot.getHasStack() && this.beaconSlot.isItemValid(var5) && var5.stackSize == 1)
            {
                if (!this.mergeItemStack(var5, 0, 1, false))
                {
                    return null;
                }
            }
            else if (index >= 1 && index < 28)
            {
                if (!this.mergeItemStack(var5, 28, 37, false))
                {
                    return null;
                }
            }
            else if (index >= 28 && index < 37)
            {
                if (!this.mergeItemStack(var5, 1, 28, false))
                {
                    return null;
                }
            }
            else if (!this.mergeItemStack(var5, 1, 37, false))
            {
                return null;
            }

            if (var5.stackSize == 0)
            {
                var4.putStack((ItemStack)null);
            }
            else
            {
                var4.onSlotChanged();
            }

            if (var5.stackSize == var3.stackSize)
            {
                return null;
            }

            var4.onPickupFromSlot(playerIn, var5);
        }

        return var3;
    }

    class BeaconSlot extends Slot
    {
        private static final String __OBFID = "CL_00001736";

        public BeaconSlot(IInventory p_i1801_2_, int p_i1801_3_, int p_i1801_4_, int p_i1801_5_)
        {
            super(p_i1801_2_, p_i1801_3_, p_i1801_4_, p_i1801_5_);
        }

        public boolean isItemValid(ItemStack stack)
        {
            return stack == null ? false : stack.getItem() == Items.emerald || stack.getItem() == Items.diamond || stack.getItem() == Items.gold_ingot || stack.getItem() == Items.iron_ingot;
        }

        public int getSlotStackLimit()
        {
            return 1;
        }
    }
}