RegistryRemapTest.java

package net.minecraftforge.test;

import net.minecraft.block.Block;
import net.minecraft.block.BlockPrismarine;
import net.minecraft.client.renderer.block.model.ModelResourceLocation;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.init.Blocks;
import net.minecraft.item.Item;
import net.minecraft.item.ItemColored;
import net.minecraft.util.ResourceLocation;
import net.minecraftforge.client.model.ModelLoader;
import net.minecraftforge.fml.common.Mod;
import net.minecraftforge.fml.common.ModContainer;
import net.minecraftforge.fml.common.event.FMLMissingMappingsEvent;
import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
import net.minecraftforge.fml.common.registry.GameRegistry;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

import java.lang.reflect.Field;
import java.util.List;

@Mod(modid = RegistryRemapTest.MODID)
public class RegistryRemapTest
{
    static final String MODID = "registry_remap_test";
    private final Logger logger = LogManager.getLogger(MODID);
    private static final ResourceLocation REG_NAME = new ResourceLocation(MODID, "remaptest");
    // Make a world, place the blocks, then set this to false
    private static final Boolean REGISTER_THINGS = false;

    @Mod.EventHandler
    public void preInit(FMLPreInitializationEvent evt)
    {
        if (REGISTER_THINGS)
        {
            Block b = (new BlockPrismarine()).setCreativeTab(CreativeTabs.tabBlock).setRegistryName(REG_NAME);
            Item i = new ItemColored(b, true).setRegistryName(REG_NAME);
            GameRegistry.register(b);
            GameRegistry.register(i);

            ModelLoader.setCustomModelResourceLocation(i, 0, new ModelResourceLocation("minecraft:prismarine", "inventory"));
            ModelLoader.setCustomModelResourceLocation(i, 1, new ModelResourceLocation("minecraft:prismarine_bricks", "inventory"));
            ModelLoader.setCustomModelResourceLocation(i, 2, new ModelResourceLocation("minecraft:dark_prismarine", "inventory"));
        }
    }

    @Mod.EventHandler
    public void onRemap(FMLMissingMappingsEvent evt) throws Exception
    {
        Field active = FMLMissingMappingsEvent.class.getDeclaredField("activeContainer");
        active.setAccessible(true);
        ModContainer mod = (ModContainer)active.get(evt);
        logger.info("Received missing mappings event");
        logger.info("  Mod Container: " + mod.getModId());
        logger.info("  Expected:      " + MODID);


        List<FMLMissingMappingsEvent.MissingMapping> get = evt.get();
        logger.info("GET():");
        for (FMLMissingMappingsEvent.MissingMapping m : get)
        {
            logger.info("\t" + m.type + " " + m.name);
        }

        List<FMLMissingMappingsEvent.MissingMapping> getAll = evt.getAll();
        logger.info("GETALL():");
        for (FMLMissingMappingsEvent.MissingMapping m : getAll)
        {
            logger.info("\t" + m.type + " " + m.name);
        }


        for (FMLMissingMappingsEvent.MissingMapping m : getAll)
        {
            // Remap our block into vanilla prismarine?
            if (REG_NAME.toString().equals(m.name))
            {
                if (m.type == GameRegistry.Type.BLOCK)
                {
                    logger.info("Remapping Block " + REG_NAME + " -> " + Blocks.prismarine);
                    m.remap(Blocks.prismarine);
                }
                else if (m.type == GameRegistry.Type.ITEM)
                {
                    logger.info("Remapping Item " + REG_NAME + " -> " + Item.getItemFromBlock(Blocks.prismarine));
                    m.remap(Item.getItemFromBlock(Blocks.prismarine));
                }
            }
        }
    }

}