ContainerModTileEntity.java

package com.tristanvo.mod.gui;

import com.tristanvo.mod.blocks.moriumWorkbench;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.inventory.Container;
import net.minecraft.inventory.IInventory;
import net.minecraft.inventory.Slot;
import net.minecraft.item.ItemStack;

public class ContainerModTileEntity extends Container{


    private moriumWorkbench te;

    public ContainerModTileEntity(IInventory inventory, moriumWorkbench te)
    {
        this.te = te;

        for(int y = 0; y < 3; ++y)
        {
            for(int x = 0; x < 3; ++x)
            {
                this.addSlotToContainer(new Slot(inventory, x + y * 9 + 9, 8 + x * 18, 84 + y * 18));
            }
        }
        for(int y = 0; y < 3; ++y)
        {
            for(int x = 0; x < 9; ++x)
            {
                this.addSlotToContainer(new Slot(inventory, x + y * 9 + 9, 8 + x * 18, 84 + y * 18));
            }
        }

        for(int x = 0; x < 9; ++x)
        {
            this.addSlotToContainer(new Slot(inventory, x, 8 + x * 18, 142));
        }
    }
    @Override
    public boolean canInteractWith(EntityPlayer player) {
        return ((IInventory) this.te).isUseableByPlayer(player);
    }
    @Override
    public ItemStack transferStackInSlot(EntityPlayer player, int fromSlot) {
        ItemStack previous = null;
        Slot slot = (Slot) this.inventorySlots.get(fromSlot);

    if (slot != null && slot.getHasStack())
    {
            ItemStack current = slot.getStack();
            previous = current.copy();

        if (fromSlot < 9)
        {
            if (!this.mergeItemStack(current, 9, 45, true))
                return null;
        }
        else
        {
            if(!this.mergeItemStack(current, 0, 9, false))
                return null;
        }
        if (current.stackSize == 0)
            slot.putStack((ItemStack) null);
        else
            slot.onSlotChanged();

        if (current.stackSize == previous.stackSize)
            return null;
        slot.onPickupFromSlot(player, current);
    }
    return previous;
    }
}