[1.15] Save data to world using WorldSavedData

[KidKoderMod033109]

Hi,

I'm looking to save ArrayLists, in the WorldSavedData class. I already have the following:

 

 

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package net.kidkoder.allergies.data;

import net.minecraft.nbt.CompoundNBT;
import net.minecraft.world.storage.WorldSavedData;

public class DataPlayerAllergies extends WorldSavedData {
    private boolean dirty;

    public DataPlayerAllergies() {
        super("playerDataAllergies");
    }

    @Override
    public void read(CompoundNBT nbt) {

    }

    @Override
    public CompoundNBT write(CompoundNBT compound) {
        return null;
    }

    @Override
    public boolean isDirty() {
        return dirty;
    }
}

 

How do I save an ArrayList in to the class in a diffrent class, then retrive it when I need it?

 

 

Thanks in advance,

Kid Koder

[Animefan8888]

1 hour ago, KidKoderMod033109 said:

How do I save an ArrayList in to the class in a diffrent class, then retrive it when I need it?

Wait what? The ArrayList should be in your WorldSavedData class.

Use a ListNBT to store a "list" of Items.

[KidKoderMod033109]

I have a class that has the logic to decide what does into the ArrayList, and I want to save that ArrayList to data in the world, Then, when the World is loaded again, to read the data and use it. I am using WorldSavedData because it seemed like it would work. If you know any other way to do this, please tell me(Please avoid from file stuff such as creating a file for each world). 

[imacatlolol]

Just do what @Animefan8888 said. Save the data in the list using a ListNBT with the write method, then read it back using the read method. Don't forget to call markDirty when the data changes in order to have it actually save.

[Animefan8888]

8 minutes ago, KidKoderMod033109 said:

I have a class that has the logic to decide what does into the ArrayList, and I want to save that ArrayList to data in the world

Put the logic into the WorldSavedData class?

[KidKoderMod033109]

The whole mod is based upon the logic and requires the logic to be in that class. But, I have thought to create a "config" file for each world, would that work/how would I do that?

[Animefan8888]

10 minutes ago, KidKoderMod033109 said:

The whole mod is based upon the logic and requires the logic to be in that class.

Why? It's your code you can manipulate it any way you want.

 

10 minutes ago, KidKoderMod033109 said:

But, I have thought to create a "config" file for each world, would that work/how would I do that?

You can't do that using the forge config system.

[imacatlolol]

Just now, Animefan8888 said:

You can't do that using the forge config system.

Can't you? I believe the SERVER config type will do exactly what is desired, unless the javadocs are misleading me.

 

[KidKoderMod033109]

5 minutes ago, Animefan8888 said:

You can't do that using the forge config system.

I mean't create a new "config file" in the world folder, then can be read back.

imacatlol said: 

Can't you? I believe the SERVER config type will do exactly what is desired, unless the javadocs are misleading me.

@imacatlololHow do I do that?

Edited April 4, 2020 by KidKoderMod033109

[imacatlolol]

@Cadiboo has a great example mod that includes examples of how to make configs here.

[Animefan8888]

8 minutes ago, imacatlolol said:

Can't you? I believe the SERVER config type will do exactly what is desired, unless the javadocs are misleading me.

 

Honestly it might, but I'm not sure that's something worth testing. Maybe the OP can enlighten us when/if they try it.

[imacatlolol]

Just now, Animefan8888 said:

Honestly it might, but I'm not sure that's something worth testing. Maybe the OP can enlighten us when/if they try it.

Good point, it might be easier to go with the WorldSavedData, especially since that was what OP wanted in the first place.

It's at least still valuable to learn about Forge's config system in general I guess.