In vanilla and older versions of Forge,

TileEntities

with inventories implement

IInventory

. This interface allows the inventory contents to be manipulated by GUIs and other blocks like Hoppers/Pipes.

 

In 1.8.9 and up, you should never be implementing

IInventory

yourself and you should avoid using it. The Capability system allows you to store one or more

IItemHandler

inventories in your

TileEntity

and access them through the

ICapabilityProvider

interface (implemented by

TileEntity

).

 

SlotItemHandler

allows you to create a

Slot

for an

IItemHandler

inventory.

 

Hoppers and vanilla inventories have been patched to support this system and item transport systems from properly updated mods (e.g. Extra Utilities 2) now use it.

Okay now I am a little confused. I am looking at the gui code for hoppers and so on and I still see IInventory everywhere.

You should be looking at exactly 1 line of TileEntityHopper if I understood Choonster correctly, the line that says what interfaces it implements.

Okay now I am a little confused. I am looking at the gui code for hoppers and so on and I still see IInventory everywhere.

 

All the vanilla GUIs still use

IInventory

, but the inventories themselves have been patched to support the

IItemHandler

capability.

Okay but in my case how should I be doing slots tho. Like for this:

	public FabTabSlot(EntityPlayer par1EntityPlayer, InventoryCrafting craftResult, IInventory iinv, int par4, int par5, int par6)
{
         super(par1EntityPlayer, craftResult, iinv, par4, par5, par6);
         this.thePlayer = par1EntityPlayer;
         this.craftMatrix = craftResult;
}

 

I cannot change it to IItemHandler because then it errors since I am extending SlotCrafting

Either extend

SlotCrafting

and replicate the functionality of

SlotItemHandler

yourself or vice versa.

Is there any github repos which are using this new functionality which I could look at to understand better?

Is there any github repos which are using this new functionality which I could look at to understand better?

 

Try searching for

net.minecraftforge.items.IItemHandler

on GitHub.

 

Refined Relocation 2 and Chisels and Bits are two I noticed.