ContainerRangeTrigger.java

package shedar.mods.ic2.nuclearcontrol.containers;

import shedar.mods.ic2.nuclearcontrol.SlotFilter;
import shedar.mods.ic2.nuclearcontrol.tileentities.TileEntityRangeTrigger;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.inventory.Container;
import net.minecraft.inventory.Slot;
import net.minecraft.item.ItemStack;

public class ContainerRangeTrigger extends Container
{
	public TileEntityRangeTrigger trigger;
	public EntityPlayer player;

	public ContainerRangeTrigger(EntityPlayer player, TileEntityRangeTrigger trigger)
	{
		super();

		this.trigger = trigger;
		this.player = player; 

		//card
		addSlotToContainer(new SlotFilter(trigger, 0, 8, 21));

		//upgrade
		addSlotToContainer(new SlotFilter(trigger, 1, 8, 39));

		//inventory
		for (int i = 0; i < 3; i++)
		{
			for (int k = 0; k < 9; k++)
			{
				addSlotToContainer(new Slot(player.inventory, k + i * 9 + 9, 8 + k * 18, 24 + 84 + i * 18));
			}
		}

		for (int j = 0; j < 9; j++)
		{
			addSlotToContainer(new Slot(player.inventory, j, 8 + j * 18, 24 + 142));
		}
	}

	@Override
	public boolean canInteractWith(EntityPlayer var1)
	{
		return trigger.isUseableByPlayer(player);
	}

	@Override
	public ItemStack transferStackInSlot(EntityPlayer p, int slotId)
	{
		Slot slot = (Slot)this.inventorySlots.get(slotId);
		if (slot != null)
		{
			ItemStack items = slot.getStack();
			if (items != null)
			{
				int initialCount = items.stackSize;
				if (slotId < trigger.getSizeInventory())//moving from panel to inventory
				{
					mergeItemStack(items, trigger.getSizeInventory(), inventorySlots.size(), false);
					if (items.stackSize == 0)
					{
						slot.putStack((ItemStack)null);
					}
					else
					{
						slot.onSlotChanged();
						if(initialCount!=items.stackSize)
							return items;
					}
				}
				else//moving from inventory to panel
				{
					for(int i = 0;i < trigger.getSizeInventory();i++)
					{
						if (!trigger.isItemValid(i, items))
						{
							continue;
						}
						ItemStack targetStack = trigger.getStackInSlot(i);
						if (targetStack == null)
						{
							Slot targetSlot = (Slot)this.inventorySlots.get(i);
							targetSlot.putStack(items);
							slot.putStack((ItemStack)null);
							break;
						}
						else if (items.isStackable() && items.isItemEqual(targetStack))
						{
							mergeItemStack(items, i, i + 1, false);
							if (items.stackSize == 0)
							{
								slot.putStack((ItemStack)null);
							}
							else
							{
								slot.onSlotChanged();
								if (initialCount != items.stackSize)
									return items;
							}
							break;
						}

					}
				}
			}
		}
		return null;
	}

}