Hi, i'm updating my code to 1.8 but i'm having some troubles with metadata blocks. After many tries i've figured out how to make them appear in inventory with the proper icon, but when i place them down they have no texture. I don't know how this happens, i also noticed that the code still search for a json file that refers to the name of the block without variant.

 

This is my block class

package mw.blocks;

import java.util.List;

import mw.blocks.itemblocks.ItemMarbleOre;
import mw.core.utils.Utils;
import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.block.properties.IProperty;
import net.minecraft.block.properties.PropertyEnum;
import net.minecraft.block.state.BlockState;
import net.minecraft.block.state.IBlockState;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.util.IStringSerializable;
import net.minecraftforge.fml.common.registry.GameRegistry;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;

public class BlockMarbleOre extends Block
{
    public static final PropertyEnum VARIANT = PropertyEnum.create("variant", BlockMarbleOre.EnumType.class);

    public BlockMarbleOre()
    {
        super(Material.rock);
        this.setDefaultState(this.blockState.getBaseState().withProperty(VARIANT, BlockMarbleOre.EnumType.WHITE));
        this.setCreativeTab(CreativeTabs.tabBlock);
        Utils.setBlockInfo(this, "marble", 1.5F, 10.0F);
    }

    /**
     * Get the damage value that this Block should drop
     */
    public int damageDropped(IBlockState state)
    {
        return ((BlockMarbleOre.EnumType)state.getValue(VARIANT)).getMetadata();
    }

    /**
     * returns a list of blocks with the same ID, but different meta (eg: wood returns 4 blocks)
     */
    @SideOnly(Side.CLIENT)
    public void getSubBlocks(Item itemIn, CreativeTabs tab, List list)
    {
        BlockMarbleOre.EnumType[] aenumtype = BlockMarbleOre.EnumType.values();
        int i = aenumtype.length;

        for (int j = 0; j < i; ++j)
        {
            BlockMarbleOre.EnumType enumtype = aenumtype[j];
            list.add(new ItemStack(itemIn, 1, enumtype.getMetadata()));
        }
    }

    /**
     * Convert the given metadata into a BlockState for this Block
     */
    public IBlockState getStateFromMeta(int meta)
    {
        return this.getDefaultState().withProperty(VARIANT, BlockMarbleOre.EnumType.byMetadata(meta));
    }

    /**
     * Convert the BlockState into the correct metadata value
     */
    public int getMetaFromState(IBlockState state)
    {
        return ((BlockMarbleOre.EnumType)state.getValue(VARIANT)).getMetadata();
    }

    protected BlockState createBlockState()
    {
        return new BlockState(this, new IProperty[] {VARIANT});
    }

    public static enum EnumType implements IStringSerializable
    {
        WHITE(0, "white"),
        PINK(1, "pink");
        private static final BlockMarbleOre.EnumType[] META_LOOKUP = new BlockMarbleOre.EnumType[values().length];
        private final int meta;
        private final String name;
        private final String unlocalizedName;


        private EnumType(int meta, String name)
        {
            this(meta, name, name);
        }

        private EnumType(int meta, String name, String unlocalizedName)
        {
            this.meta = meta;
            this.name = name;
            this.unlocalizedName = unlocalizedName;
        }

        public int getMetadata()
        {
            return this.meta;
        }

        public String toString()
        {
            return this.name;
        }

        public static BlockMarbleOre.EnumType byMetadata(int meta)
        {
            if (meta < 0 || meta >= META_LOOKUP.length)
            {
                meta = 0;
            }

            return META_LOOKUP[meta];
        }

        public String getName()
        {
            return this.name;
        }

        public String getUnlocalizedName()
        {
            return this.unlocalizedName;
        }

        static
        {
            BlockMarbleOre.EnumType[] var0 = values();
            int var1 = var0.length;

            for (int var2 = 0; var2 < var1; ++var2)
            {
                BlockMarbleOre.EnumType var3 = var0[var2];
                META_LOOKUP[var3.getMetadata()] = var3;
            }
        }
    }
}

It's just a copy-paste of the BlockPlanks class (just for try)

 

This is the ItemBlock class, imported from the 1.7.10 code

package mw.blocks.itemblocks;

import net.minecraft.block.Block;
import net.minecraft.item.ItemBlock;
import net.minecraft.item.ItemStack;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;

public class ItemMarbleOre extends ItemBlock{

private final static String[] subNames = {"white", "pink"};

public ItemMarbleOre(Block id)
{
	super(id);
	setHasSubtypes(true);
}

@Override
public int getMetadata (int metadata)
{
	return metadata;
}

@Override
public String getUnlocalizedName(ItemStack itemstack)
{
	return "tile." + subNames[itemstack.getItemDamage()] + "_" + "marble";
}
}

 

This is where i register the metadata block

package mw.core;

import mw.blocks.BlockMarbleOre;
import mw.blocks.itemblocks.ItemMarbleOre;
import net.minecraft.block.Block;
import net.minecraft.client.renderer.entity.RenderItem;
import net.minecraft.client.resources.model.ModelBakery;
import net.minecraft.client.resources.model.ModelResourceLocation;
import net.minecraft.item.Item;
import net.minecraft.item.ItemBlock;
import net.minecraftforge.fml.common.registry.GameRegistry;

public class MWMetadataBlocks {

public static Block marble;

public static void addBlocks()
{
	marble = new BlockMarbleOre();
}

public static void registerBlocks(RenderItem renderItem)
{

	addBlock(marble, ItemMarbleOre.class, renderItem);

}

public static void addBlock(Block block, Class<? extends ItemBlock> itemblock, RenderItem renderItem)
{
	String name = block.getUnlocalizedName().substring(block.getUnlocalizedName().indexOf(".") + 1, block.getUnlocalizedName().length());

	GameRegistry.registerBlock(block, itemblock, name);


	if(block.equals(marble))
	{
		ModelBakery.addVariantName(Item.getItemFromBlock(block), new String[]{MW.MODID + ":" + "white_marble", MW.MODID + ":" + "pink_marble"});
		renderItem.getItemModelMesher().register(Item.getItemFromBlock(block), 0, new ModelResourceLocation(MW.MODID + ":" + "white_marble", "inventory"));
		renderItem.getItemModelMesher().register(Item.getItemFromBlock(block), 1, new ModelResourceLocation(MW.MODID + ":" + "pink_marble", "inventory"));
	}

}
}

 

The renderItem item is imported from the init method of the main mod file

 

This is the blockstate file for the white variant (the pink is the same but the name changed)

BlockState

{
"variants": {
	"normal": { "model": "mw:white_marble" }
}
}

Model/block

{
"parent": "block/cube_all",
"textures": {
	"all": "mw:blocks/white_marble"
}
}

Model/item

{
"parent": "mw:block/white_marble",
"display": {
	"thirdperson": {
		"rotation": [10, -45, 170],
		"translation": [0, 1.5, -2.75],
		"scale": [0.375, 0.375, 0.375]
	}
}
}

 

All the three files are named "white_marble"

 

When compiling i got this two errors

[13:08:03] [Client thread/ERROR] [FML]: Model definition for location mw:marble#variant=white not found
[13:08:03] [Client thread/ERROR] [FML]: Model definition for location mw:marble#variant=pink not found

 

And in game i have this as result

 

Thanks in advice for all who will help me

your blockstate file needs to be something like this

"variants": {
"variant=white": { "model": "mw:white_marble" },
"variant=pink": {"model":"mw:pink_marble"}
}

unless you want to create a custom state map which is what minecraft does for the planks but you cant use the vanilla StateMap for variants due to the fact that there is no option for your modid so you need to create your own CustomSateMap

Thank you so much for the quick answer! That saved my day