WorldGenConfigObject.java

package xyz.unh0lytigg.mods.orangepower.world.gen;

import java.util.*;

import com.google.common.collect.*;
import com.google.gson.*;

import net.minecraft.block.*;
import net.minecraft.block.properties.*;
import net.minecraft.block.state.*;
import net.minecraft.util.*;

public class WorldGenConfigObject {
    public String name;
    public IBlockState blockStateToPlace;
    public Block blockToOverride;
    public int minY, maxY;
    public int minVeinSize, maxVeinSize;
    public int chancesToSpawn;
    public List<Integer> enabledDimensions = Lists.newArrayList();
    
    @SuppressWarnings({ "unchecked", "rawtypes" })
    public static WorldGenConfigObject createFromJson(JsonElement element) {
        if (!element.isJsonObject())
            return null;
        JsonObject object = element.getAsJsonObject();
        WorldGenConfigObject obj = new WorldGenConfigObject();
        obj.name = object.get("Name").getAsString();
        JsonObject toPlaceObject = object.getAsJsonObject("Place");
        JsonObject toPlaceResourceObject = toPlaceObject.getAsJsonObject("Resource");
        ResourceLocation toPlaceBlockRegistryLocation = new ResourceLocation(toPlaceResourceObject.get("Domain").getAsString(), toPlaceResourceObject.get("Path").getAsString());
        Block toPlaceBlock = Block.REGISTRY.getObject(toPlaceBlockRegistryLocation);
        IBlockState state = toPlaceBlock.getDefaultState();
        JsonObject toPlacePropertiesObject = object.getAsJsonObject("Properties");
        Collection<IProperty<?>> properties = state.getPropertyNames();
        for (IProperty<?> prop : properties) {
            String propName = prop.getName();
            if (!toPlacePropertiesObject.has(propName))
                continue;
            Class<?> valClass = prop.getValueClass();
            if (valClass.equals(Integer.class)) {
                IProperty<Integer> intProp = (IProperty<Integer>)prop;
                state = state.withProperty(intProp, toPlacePropertiesObject.getAsJsonPrimitive(propName).getAsInt());
            } else if (valClass.equals(Boolean.class)) {
                IProperty<Boolean> boolProp = (IProperty<Boolean>)prop;
                state = state.withProperty(boolProp, toPlacePropertiesObject.getAsJsonPrimitive(propName).getAsBoolean());
            } else if (valClass.isEnum() && IStringSerializable.class.isAssignableFrom(valClass)) {
                String val = toPlacePropertiesObject.getAsJsonPrimitive(propName).getAsString();
                state = enumProp(state, prop, val, getClassOf(prop));
            }
        }
        obj.blockStateToPlace = state;
        JsonObject toOverrideObject = object.getAsJsonObject("Override");
        JsonObject toOverrideResourceObject = toOverrideObject.getAsJsonObject("Resource");
        ResourceLocation toOverrideBlockResourceLocation = new ResourceLocation(toOverrideResourceObject.get("Domain").getAsString(), toOverrideResourceObject.get("Path").getAsString());
        obj.blockToOverride = Block.REGISTRY.getObject(toOverrideBlockResourceLocation);
        obj.minY = object.getAsJsonPrimitive("MinY").getAsInt();
        obj.maxY = object.getAsJsonPrimitive("MaxY").getAsInt();
        obj.minVeinSize = object.getAsJsonPrimitive("MinVeinSize").getAsInt();
        obj.maxVeinSize = object.getAsJsonPrimitive("MaxVeinSize").getAsInt();
        obj.chancesToSpawn = object.getAsJsonPrimitive("ChancesToSpawn").getAsInt();
        JsonArray dimensions = object.getAsJsonArray("EnabledDimensions");
        return obj;
    }

    @SuppressWarnings("unchecked")
    private static <E extends Enum<E> & IStringSerializable> IBlockState enumProp(IBlockState stateIn, IProperty<?> property, String value, Class<E> clazz) {
        IProperty<E> realProp = (IProperty<E>)property;
        for (E e : realProp.getAllowedValues()) {
            if (e.name().equalsIgnoreCase(value)) {
                return stateIn.withProperty(realProp, e);
            }
        }
        throw new IllegalArgumentException("Could not find " + value + " in " + property.getValueClass().getName() + " values allowed by " + stateIn.getBlock().getRegistryName().toString() + "#" + property.getName());
    }
    
    @SuppressWarnings("unchecked")
    private static <E extends Enum<E> & IStringSerializable> Class<E> getClassOf(IProperty<?> property) {
        IProperty<E> real = (IProperty<E>)property;
        return real.getValueClass();
    }
}