Hello!

 

Title.

The Forge Documentation page doesn't show examples of how to save/load data from other classes (like MyEventHandler), it kind of explains which methods to use, but I'm still unsure how to do it properly and I want to do it properly.

 

Both the MyWorldSavedData#write/readNBTTagCompounds() are run, and MyEventHandler#countFullMoons() is run properly.

 

MyWorldSavedData:

Spoiler

package com.ani.s;

import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.world.World;
import net.minecraft.world.storage.MapStorage;
import net.minecraft.world.storage.WorldSavedData;

public class MyWorldSavedData extends WorldSavedData {

    static final String DATA_NAME = MyVariousVariables.MODID + "_MyWorldSavedData";

    // Do I need to create a new variable in this class for every variable I want to save?
    private int amount_of_full_moons;

    public MyWorldSavedData() {
        super(DATA_NAME);
    }

    public MyWorldSavedData(String s) {
        super(s);
    }

    @Override
    public void readFromNBT(NBTTagCompound nbt) {
        amount_of_full_moons = nbt.getInteger("amount_of_full_moons");

        System.out.println("READ FROM NBT " + amount_of_full_moons);
    }

    @Override
    public NBTTagCompound writeToNBT(NBTTagCompound nbt) {
        nbt.setInteger("amount_of_full_moons", amount_of_full_moons);

        System.out.println("WRITE TO NBT " + amount_of_full_moons);
        return nbt;
    }

    public static MyWorldSavedData get(World world) {
        MapStorage storage = world.getPerWorldStorage();
        MyWorldSavedData instance = (MyWorldSavedData) storage.getOrLoadData(MyWorldSavedData.class, DATA_NAME);
        if (instance == null) {
            instance = new MyWorldSavedData();
            storage.setData(DATA_NAME, instance);
        }
        return instance;
    }
}

MyEventHandler:

Spoiler

package com.ani.s;

import net.minecraftforge.fml.common.Mod;
import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
import net.minecraftforge.fml.common.gameevent.TickEvent.WorldTickEvent;

@Mod.EventBusSubscriber
public class MyEventHandler {

    public int amount_of_full_moons;

    @SubscribeEvent
    public void countFullMoons(WorldTickEvent event) {
        if (event.phase == event.phase.START && event.world.provider.isSurfaceWorld()) {
            // How do I properly use MyWorldSavedData to load 'amount_of_full_moons' here?

            if (event.world.getWorldTime() == 13000 && event.world.getCurrentMoonPhaseFactor() >= 1F) {
                ++amount_of_full_moons;

                // How do I properly use MyWorldSavedData to save 'amount_of_full_moons' here?
                MyWorldSavedData.get(event.world).markDirty();
            }
        }
    }
}

 

MyWorldSavedData.get(any_world_ref).amount_of_full_moons?

 

You'd have to make it a public variable (or add a getter) though.

Edited July 22, 20187 yr by Draco18s