[1.12.2] Is there a tile entity equivelent for items?

[Mekelaina]

Ok, so my problem is that My item that stores items needs to be fairly complex. It has to be able to access 3 different inventories, Its own inventory, the player's inventory, and the inventory of an item in a specified slot (this item is a specific type). The size of these inventories are larger than the guis can fit, (i was planning to use a scroll bar kinda like the creative menus) and one set of inventory slots need to be "disabled" if there isn't an item in a specific slot. this will require some form of communication between the container and the gui and I'm really not sure how to go about this with an item. If it were a block, then you could use a tile entity to handle the communication. I know this sounds kinda vague but I'm just trying to figure out the best way to accomplish what I'm going for.

[V0idWa1k3r]

You can use capabilities. A capability can be attached to an ItemStack just as it can be attached to entities, TEs and other things.

[Mekelaina]

@V0idWa1k3r ok, so how do the capabilities work? Like I'm still really confused about what they are exactly.

[loordgek]

https://mcforge.readthedocs.io/en/latest/datastorage/capabilities/

 

[Mekelaina]

@loordgek I'm aware of the forge page, that doesn't answer my question of how they work.  Like its some kind of a d v a n c e d interface, but how its actually used I've no idea from the documentation. My problem is that I don't know how to use capabilities so I don't know what I need to do in my own capability to do what it is I want. Does anyone have a more beginner friendly explanation of what capabilities are and how they're used?  Like forge provides a default item handling capability that can be used for storage, in theory, that should be all I need since I'm basically just trying to access three inventories at once. How can I get my gui and my container to talk to each other? one is server side and one is client side, but I need to update the server based on what the client does, right? If the player scrolls down in the inventory menu the container has to be updated to display the items accordingly. Can a capability extend another capability? can you implement more than one capability in an item? How does that work with attaching more than one capability to an item, block, or player? The documentation doesn't get me very far because I'm an idiot whose total modding experience can be summed up as about 5 minutes through a youtube tutorial (that's hyperbole, the point is I don't know what I'm doing nor what I'm looking for.)

[Cadiboo]

29 minutes ago, Mekelaina said:

Does anyone have a more beginner friendly explanation of what capabilities are and how they're used?

A capability is pretty much the same as an interface.

Instead of

if (object instanceof Interface)

you use

object.hasCapability(Capability)

and instead of

((Interface)object).doStuff()

you use

object.getCapability(Capability).doStuff()

 

 

[Mekelaina]

@Cadiboo Ok, so it's like an interface, but can do more?

[Big_Bad_E]

It depends on what you want your item to do. Capabilities are good for storing data, so it can be accessed outside of the class, or to show that it can do something. Most items are just used on click. What do you want your item to do?