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Get world saved data on client for a screen [1.19.2]

RInventor7

By RInventor7
in Modder Support

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RInventor7 Stone Miner

RInventor7

Posted
Posted

Hi! I have some problems with world saved data since it is server-side only. I have created like an in-game computer system with a lot of screens. I'm using world saved data to store the data and so all players can access it from anywhere in the world. Problems arise with getting data to display on the screen. If player edits data on a screen I can send a custom packet to server and save the data to world saved data.

How can I get the data from world saved data when I reopen the screen on client to display the data on the screen? Send packet to server -> get data -> send 2nd packet back to client?? Thanks.

warjort Reality Controller

warjort

Posted
Posted

You are responsible for synchronizing server data to the client for display.

https://forge.gemwire.uk/wiki/Main_Page - "the handling information" section

e.g. the vanilla MapItem serializes its SavedData map data to the client using the ClientBoundMapItemDataPacket

Boilerplate:

If you don't post your logs/debug.log we can't help you. For curseforge you need to enable the forge debug.log in its minecraft settings. You should also post your crash report if you have one.

If there is no error in the log file and you don't have a crash report then post the launcher_log.txt from the minecraft folder. Again for curseforge this will be in your curseforge/minecraft/Install

Large files should be posted to a file sharing site like https://gist.github.com  You should also read the support forum sticky post.

RInventor7 Stone Miner

RInventor7

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Posted (edited)
On 5/1/2023 at 12:43 PM, warjort said:

e.g. the vanilla MapItem serializes its SavedData map data to the client using the ClientBoundMapItemDataPacket

This is where I got stuck. I looked bunch of Vanilla classes and tried to do this myself, but now I have so many questions. The code is here. I added comments to the places in code where I am confused. (I’m not even sure what I’m doing wrong...)

Edited by RInventor7
warjort Reality Controller

warjort

Posted
Posted

You didn't read that the "Handling Information" section of the wiki like I told you.

If you did you would know you have to use a SimpleChannel to do networking.

Mojang's PacketListeners are hardwired (one on the client and one for each player on the server) with a fixed set of known vanilla packets. You can't create your own or add new packet types to it.

Boilerplate:

If you don't post your logs/debug.log we can't help you. For curseforge you need to enable the forge debug.log in its minecraft settings. You should also post your crash report if you have one.

If there is no error in the log file and you don't have a crash report then post the launcher_log.txt from the minecraft folder. Again for curseforge this will be in your curseforge/minecraft/Install

Large files should be posted to a file sharing site like https://gist.github.com  You should also read the support forum sticky post.

RInventor7 Stone Miner

RInventor7

Posted
  • Author
Posted
2 hours ago, warjort said:

Mojang's PacketListeners are hardwired (one on the client and one for each player on the server) with a fixed set of known vanilla packets. You can't create your own or add new packet types to it.

That made things more clear. And I am using SimpleChannel to do networking, I just don’t know where to use it. I know I have to send the clientbound packet at some point to the player when the screen is opened, but I don’t understand where I have to send it in order to get the SavedData value on client for the screen.

Code updated.

warjort Reality Controller

warjort

Posted
Posted (edited)

If you want help doing something and have tried to figure it out for yourself then you can ask that specific question here.

But we don't write or design your mod for you. Only you know where the data changes and who you need to send those changes to.

Edited by warjort

Boilerplate:

If you don't post your logs/debug.log we can't help you. For curseforge you need to enable the forge debug.log in its minecraft settings. You should also post your crash report if you have one.

If there is no error in the log file and you don't have a crash report then post the launcher_log.txt from the minecraft folder. Again for curseforge this will be in your curseforge/minecraft/Install

Large files should be posted to a file sharing site like https://gist.github.com  You should also read the support forum sticky post.

sFXprt Stone Miner

sFXprt

Posted
Posted
On 5/3/2023 at 8:58 PM, RInventor7 said:

That made things more clear. And I am using SimpleChannel to do networking, I just don’t know where to use it. I know I have to send the clientbound packet at some point to the player when the screen is opened, but I don’t understand where I have to send it in order to get the SavedData value on client for the screen.

Code updated.

do you still need help, I can guide you on how to accomplish everything. Only thing I ask is next time you help others 

sFXprt Stone Miner

sFXprt

Posted
Posted (edited)

https://github.com/Rinventor/SavedDataSync/blob/main/PTMSavedData.java#:~:text=(level)) {-,PTMSavedData data %3D PTMSavedData.getInstance(level)%3B,-return data.

Whenever you are calling Client side code and want the server to do something with it you must send a packet over to the server and have the server do the logic there and if needed return any data changes back to the client.

Not to be rude, but I really think you are over complicating everything and making it harder on yourself. Like mentioned above its really as simple as sending the data to server and if needed have the server send the data back to the client. Usually if the data you need to mess with is server side you don't need to send any data back.

Edited by sFXprt

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