[1.18.2] Saving player inventory using capabilities help

[xana43]

I'm working on a pretty advanced mod that has to muck about with dimensions and changing the entire player inventory between these dimensions.

I currently have this Capability
https://github.com/xana43/CodeLyoko-Legacy/blob/MC-1.18/src/main/java/com/Ultra_Nerd/CodeLyokoLegacy/player/Dimension/DimensionCapabilities.java

 

and it's registered here
https://github.com/xana43/CodeLyoko-Legacy/blob/MC-1.18/src/main/java/com/Ultra_Nerd//CodeLyokoLegacy/player/Capabilities/CapabilityRegistration.java

 

and like most of the mod functions i'm doing I'm defining the server message here
https://github.com/xana43/CodeLyoko-Legacy/blob/MC-1.18/src/main/java/com/Ultra_Nerd//CodeLyokoLegacy/Network/Util/CapabilityPlayerInventorySync.java

 

and adding the capability packet handler here
https://github.com/xana43/CodeLyoko-Legacy/blob/MC-1.18/src/main/java/com/Ultra_Nerd//CodeLyokoLegacy/Network/Util/PacketHandler.java

 

this issue i've been having is that for some reason whenever the inventory save is triggered (currently it's triggered whenever the player changes a dimension and the dimension they're changing to isn't a vanilla dimension)

the log keeps saying this

https://pastebin.com/VPDMYry3

 

I've dealt with handling simple values in the Byte buffer (such as normal NBT as defined by the player Class capability) but i'm confused on how reading a collection works. any help would be appreciated 
(also sorry if the formatting it's the prettiest i'm a bit rusty on my java because i've mainly been working on other projects that are in C# or javascript)

Edited April 15, 2022 by xana43
link change

[Luis_ST]

  On 4/15/2022 at 12:48 AM, xana43 said:

I'm working on a pretty advanced mod that has to muck about with dimensions and changing the entire player inventory between these dimensions.

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why did you not use Forge's IItemHandler and ItemStackHandler?

create a Level Capability and create there a Map with the IItemHandler (Inventory) and the Player (you should use the GameProfile or the UUID)
then subscribe to PlayerChangedDimensionEvent and load the Inventory from the Level Capability

the save and sync of IItemHandler is done automatically, if you create the Capability Correct

Edited April 15, 2022 by Luis_ST

[xana43]

  On 4/15/2022 at 11:37 AM, Luis_ST said:

the save and sync of IItemHandler is done automatically, if you create the Capability Correct

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huh, that's good to know that it handles all that now, because back when I first started modding (1.12) IItem handler didn't use to sync with the server properly

 

[xana43]

well now i'm confused, because the player can't provide an Item handler, only the raw inventory class that it contains, i'm not sure if that's the same thing, but i'll try it and see what happens

[Luis_ST]

extends the Forge IItemHandler and add it to the Player

[xana43]

how would I go about doing that? I've been trying for the past hour and i'm really confused, is it that I need to extend the item handler in the capability class or add an item handler to the player and reference that?

Edited April 15, 2022 by xana43

[Luis_ST]

  On 4/15/2022 at 1:23 PM, xana43 said:

how would I go about doing that? I've been trying for the past hour and i'm really confused, is it that I need to extend the item handler in the capability class or add an item handler to the player and reference that?

Expand  

if you don't know how to extends an Interface and a class, you should learn basic java before modding minecraft

Edited April 15, 2022 by Luis_ST

[xana43]

  On 4/15/2022 at 2:07 PM, Luis_ST said:

if you don't know how to extends an Interface and a class

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oh that's what you mean, well I tried to implement I Item handler, but it seemed to be not the thing I was looking for (a lot more data needed to be sent to it than was available) so I decided to try a more simpler route. I extended INBTSerializeable<ListTag> then made a hashmap that held a UUID and a ListTag, and used the methods that are part of the inventory class (I.E. player.getInventory().save())

and loaded the map with that, then serialized it using a forloop on it's keyset and returned each element etc etc.