I get that you have to send a packet from the client to the server and I know how to make packets but I'm only used to server-to-client; I'm confused as to how to handle client-to-server.

 

Like I want to have two keybinds: one that uses an item if it's in the player's inventory, and another that changes a held item's NBT data.

Do I just need to send a packet on key press and perform the action within its scheduled task on the server? Or do I need to also have the action done client-side pre-sending packet?

1 hour ago, SapphireSky said:

just need to send a packet on key press and perform the action within its scheduled task on the server

The item/inventory will sync itself to the client automatically in this case.

 

Make sure not to spam the server with packets though.

4 minutes ago, V0idWa1k3r said:

Make sure not to spam the server with packets though.

Well there's not exactly a way to do it without packets, is there?

The changing-NBT one I feel would be used quite a lot, and while I don't want to spam packets I can't really think of a better way of doing it since something like just sneak-using the item seems really tacky...