WorldSavedData

package com.ramon.hellow;

import java.util.ArrayList;
import java.util.List;

import com.ramon.hellow.worldgen.WorldStructure;

import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagList;
import net.minecraft.world.World;
import net.minecraft.world.WorldSavedData;
import net.minecraftforge.common.DimensionManager;
import net.minecraftforge.common.util.Constants;

public class BikeWorldData extends WorldSavedData {

    private static final String IDENTIFIER = "bikemod";
    List<WorldStructure> structs = new ArrayList<WorldStructure>();

    public BikeWorldData(String identifier) {
        super(identifier);
    }

    public BikeWorldData() {
        super(IDENTIFIER);
    }

    @Override
    public void readFromNBT(NBTTagCompound nbt) {
        NBTTagList list = nbt.getTagList("structures", Constants.NBT.TAG_COMPOUND);
        Context context = Main.instance().context;
        for (int i=0;i<list.tagCount();i++) {
            NBTTagCompound compound = list.getCompoundTagAt(i);
            WorldStructure struct = new WorldStructure(compound.getString("name"), compound.getInteger("x"), compound.getInteger("y"), compound.getInteger("z"), DimensionManager.getWorld(compound.getInteger("world")), context.getStructure(compound.getString("structure")), context.getTheme(compound.getString("theme")));
            structs.add(struct);
        }
    }

    @Override
    public void writeToNBT(NBTTagCompound nbt) {
        NBTTagList list = new NBTTagList();
        for (WorldStructure struct: structs) {
            NBTTagCompound tag = new NBTTagCompound();
            tag.setString("name", struct.getName());
            tag.setInteger("x", struct.getX());
            tag.setInteger("y", struct.getY());
            tag.setInteger("z", struct.getZ());
            tag.setString("structure", struct.getStructure().getName());
            tag.setString("theme", struct.getTheme().getName());
            tag.setInteger("world", struct.getWorld().provider.dimensionId);
            list.appendTag(tag);
        }
        nbt.setTag("structures", list);
    }

    public void updateStructures(List<WorldStructure> list) {
        structs = new ArrayList<WorldStructure>(list);
        markDirty();
    }

    public List<WorldStructure> getStructures() {
        return structs;
    }

    public static BikeWorldData get(World world) {
        BikeWorldData data = (BikeWorldData) world.mapStorage.loadData(BikeWorldData.class, IDENTIFIER);
        if (data==null) {
            data = new BikeWorldData();
            world.mapStorage.setData(IDENTIFIER, data);
        }
        return data;
    }

}