I have a custom inventory that uses capabilities and it works I just need to know how would I be able to get if ex slot 1 has dirt.

Ok I've tried that in

 

    @SubscribeEvent
    public void ClientsTick(TickEvent.ClientTickEvent event) {
        if (event.phase == TickEvent.Phase.END) {
            if (!(TESTInventory.container.getStackInSlot(1).isEmpty())) {
                LOGGER.info("Is Not Empty");
            }
        }
    }

 

And TESTInventory.container get the IItemHandler from the capability

 

and when I load a world I get a 

java.lang.NullPointerException: null

public interface ITESTInv extends IItemHandlerModifiable {

}

And

public class TESTInventory extends ItemStackHandler implements ITESTInv {

    public static ITESTInv container;

    public TESTInventory () {
        super(8);
    }

    @Override
    protected void onContentsChanged(int slot) {
        super.onContentsChanged(slot);
    }

    @Override
    public CompoundNBT serializeNBT() {
        return super.serializeNBT();
    }

    @Override
    public void deserializeNBT(CompoundNBT nbt) {
        super.deserializeNBT(nbt);
    }
}

Its static so I can use it in a different class.

5 minutes ago, UserMC123 said:

Its static so I can use it in a different class.

this is not the way you use a capability

you bind the capability to an object for example the World an Entity or an Item,
than you get the capability via getCapability, then do your stuff
https://mcforge.readthedocs.io/en/latest/datastorage/capabilities/

Edited July 27, 20214 yr by Luis_ST

Ok please explain how to properly use it.

Just now, UserMC123 said:

Ok please explain how to properly use it.

see my edit:

2 minutes ago, Luis_ST said:

you bind the capability to an object for example the World an Entity or an Item,
than you get the capability via getCapability, then do your stuff
https://mcforge.readthedocs.io/en/latest/datastorage/capabilities/

 

 

My capability works

It saves and loads the items in the slots.

 

I need to know how do i get .getStackInSlot(1) in a different class or somthing like it.

Edited July 27, 20214 yr by UserMC123

5 hours ago, UserMC123 said:

I need to know how do i get .getStackInSlot(1) in a different class or somthing like it.

This is basic OOP, you need a reference to the object that has the capability.

Thank you it works now.