Null-Name while registering

[Oberschiene 0]

Hello, i'm trying myself in coding a Mod for 1.13.2 and while creating and testing my first ore, i ran into this error:

"Exception caught during firing event: Can't use a null-name for the registry, object Block{minecraft:air}."

I use the latest forge mdk.

I did not touch the minecraft:air, i just added a new ore. I also set its registry name in the ore-class-constructor like so: 

this.setRegistryName("mangan_ore");

I will add the log and this is my ModBlocks file, where i register all my blocks/itemblocks:

package com.versio.init;

import static com.versio.util.InjectionUtil.Null;
import com.google.common.base.Preconditions;
import com.versio.Versio;
import com.versio.block.BlockJar;
import com.versio.block.BlockManganOre;
import net.minecraft.block.Block;
import net.minecraft.item.EnumRarity;
import net.minecraft.item.Item;
import net.minecraft.item.ItemBlock;
import net.minecraft.util.ResourceLocation;
import net.minecraftforge.event.RegistryEvent;
import net.minecraftforge.eventbus.api.SubscribeEvent;
import net.minecraftforge.fml.common.Mod;
import net.minecraftforge.registries.ObjectHolder;

@ObjectHolder(Versio.MODID)
public class ModBlocks {

    public static final BlockManganOre MANGAN_ORE = Null();
    public static final BlockJar JAR = Null();

    @Mod.EventBusSubscriber(modid = Versio.MODID, bus = Mod.EventBusSubscriber.Bus.MOD)
    public static class Register {

        @SubscribeEvent
        public static void registerBlock(final RegistryEvent.Register<Block> event) {
            final Block[] blocks = {new BlockManganOre(), new BlockJar()};

            event.getRegistry().registerAll(blocks);
        }

        @SubscribeEvent
        public static void registerItemBlocks(final RegistryEvent.Register<Item> event) {
            final ItemBlock[] items = {
                    new ItemBlock(MANGAN_ORE,
                            new Item.Properties().maxStackSize(64).rarity(EnumRarity.UNCOMMON)
                                    .group(Versio.MODTAB)),
                    new ItemBlock(JAR, new Item.Properties().maxStackSize(16)
                            .rarity(EnumRarity.UNCOMMON).group(Versio.MODTAB))};

            for (final ItemBlock item : items) {
                final Block block = item.getBlock();
                final ResourceLocation registryName = Preconditions.checkNotNull(
                        block.getRegistryName(), "Block %s has a null registry name", block);

                event.getRegistry().register(item.setRegistryName(registryName));
            }
        }
    }
}

Does someone know, what the cause of that error is?

latest.log

[V0idWa1k3r 386]

All I can tell you is one of your blocks has a null registry name. Can't tell you which one since you've never provided the code for said blocks.

[Oberschiene 0]

Thanks for the quick reply!

I only have two blocks and these are the classes:

Thats the first one:

package com.versio.block;

import com.versio.init.ModItems;
import net.minecraft.block.Block;
import net.minecraft.block.SoundType;
import net.minecraft.block.material.Material;
import net.minecraft.block.material.MaterialColor;
import net.minecraft.block.state.IBlockState;
import net.minecraft.item.ItemStack;
import net.minecraft.util.NonNullList;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;
import net.minecraftforge.common.ToolType;

public class BlockManganOre extends Block {

    public BlockManganOre() {
        super(Properties.create(Material.ROCK, MaterialColor.RED).hardnessAndResistance(3.0F, 2.0F)
                .sound(SoundType.STONE));
        this.setRegistryName("mangan_ore");
    }

    @Override
    public int getHarvestLevel(IBlockState state) {
        return 2;
    }

    @Override
    public ToolType getHarvestTool(IBlockState state) {
        return ToolType.PICKAXE;
    }

    @Override
    public void getDrops(IBlockState state, NonNullList<ItemStack> drops, World world, BlockPos pos,
            int fortune) {
        drops.add(new ItemStack(ModItems.MANGAN, 1 + fortune));
    }
}

 

And thats the second:

package com.versio.block;

import com.versio.init.ModItems;
import com.versio.tileentity.TileEntityJar;
import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.block.state.IBlockState;
import net.minecraft.entity.item.EntityItem;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.ItemStack;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.BlockRenderLayer;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.EnumHand;
import net.minecraft.util.math.BlockPos;
import net.minecraft.util.math.shapes.VoxelShape;
import net.minecraft.world.IBlockReader;
import net.minecraft.world.World;

public class BlockJar extends Block {

    public BlockJar() {
        super(Properties.create(Material.GLASS).hardnessAndResistance(.6F));
        this.setRegistryName("jar");
    }

    @Override
    public boolean onBlockActivated(IBlockState state, World worldIn, BlockPos pos,
            EntityPlayer player, EnumHand hand, EnumFacing side, float hitX, float hitY,
            float hitZ) {
        TileEntityJar jar = (TileEntityJar) worldIn.getTileEntity(pos);
        if (jar.amount() < 64 && !player.getHeldItem(hand).isEmpty()
                && player.getHeldItem(hand).getItem().equals(ModItems.MANGAN)
                && !player.isSneaking()) {
            player.getHeldItem(hand).shrink(1);
            jar.addCrystals();
            return true;
        } else if (player.isSneaking() && jar.amount() > 0) {
            player.addItemStackToInventory(new ItemStack(ModItems.MANGAN));
            jar.removeCrystals();
            return true;
        }
        return false;
    }

    @Override
    public void harvestBlock(World worldIn, EntityPlayer player, BlockPos pos, IBlockState state,
            TileEntity te, ItemStack stack) {
        TileEntityJar jar = (TileEntityJar) te;
        while (jar.amount() > 0) {
            if (!worldIn.isRemote) {
                worldIn.spawnEntity(new EntityItem(worldIn, pos.getX(), pos.getY(), pos.getZ(),
                        new ItemStack(ModItems.MANGAN)));
                jar.removeCrystals();
            }
        }
        super.harvestBlock(worldIn, player, pos, state, te, stack);
    }

    @Override
    public boolean isBlockNormalCube(IBlockState state) {
        return false;
    }

    @Override
    public boolean isFullCube(IBlockState state) {
        return false;
    }

    @Override
    public BlockRenderLayer getRenderLayer() {
        return BlockRenderLayer.CUTOUT;
    }

    @Override
    public VoxelShape getShape(IBlockState state, IBlockReader worldIn, BlockPos pos) {
        return Block.makeCuboidShape(3.0D, 0.0D, 3.0D, 13.0D, 13.0D, 13.0D);
    }

    @Override
    public boolean hasTileEntity(IBlockState state) {
        return true;
    }

    @Override
    public TileEntity createTileEntity(IBlockState state, IBlockReader world) {
        return new TileEntityJar();
    }
}

 

[V0idWa1k3r 386]

Your code looks fine to me at a first glance.

Could you provide a link to your github repository so I can debug it locally?

[Oberschiene 0]

Okay, here's the link:

https://github.com/jonas69/Versio

 

And thanks for your effort:)

[diesieben07 6692]

The code on Github does not match up with the provided crash report. The stacktrace points at ModBlocks line 29, which is a comment in the code you posted.

Please provide up-to-date code and logs.

[Oberschiene 0]

Oh right, it should be now:)

[diesieben07 6692]

Line 29 is still a comment.

You have not provided an updated log.

[Oberschiene 0]

My bad, heres the new log:

latest.log

[diesieben07 6692]

Dude.

Quote

    at com.versio.init.ModBlocks$Register.registerBlock(ModBlocks.java:29)

https://github.com/jonas69/Versio/blob/master/src/main/java/com/versio/init/ModBlocks.java#L29

 

This does not match up.

[Oberschiene 0]

Yes exactly, thats the strange thing. I know that there's a comment in this line, but if i run the client (with the code just like on github), i get this log with those error-messages. I just tried it again, chose the client in run-config, then the game startet and gave me this latest.log with exactly the line 29 even though there's java-doc

[diesieben07 6692]

Make sure you are not running with outdated build artifacts (the class files).

Your IDE should give you an option to completely rebuild the project.

[Oberschiene 0]

Okay i didn't thought of that, but now it works! Thank you very much, esp. that your responses were so quick:)