In preInit i do GameRegistry.registerItem and in init i do Minecraft.getMinecraft().getRenderItem().getItemModelMesher().register(item, 0, new ModelResourceLocation(Reference.MODID+":"+itemname, "inventory"))

I quintuple-checked the file locations so that the texture is in assets.MODID.textures.items and the .json file is in assets.MODID.models.item but a game renders a standard 3D block with black and purple checkerboard pattern. My item's class extends Item so I don't understand why is it trying to render a block?

I'm using Intellij IDEA 14.1

 

my MODID is "NotEnoughPower" and it has some upper-case letters

 

some constants are referenced in the code

Reference.MODID = "NotEnoughPower"

Textures.COAL_PIECE = "coal_piece"

Textures.RESOURCE_PREFIX = Reference.MODID.toLowerCase() + ":";

 

This is the project Structure

http://imgur.com/N3chCP1

 

init and preInit methods of the main Mod class

 

 

@Mod.EventHandler

    public void preInit(FMLPreInitializationEvent event)

    {

        ConfigHandler.init(event.getSuggestedConfigurationFile());

        FMLCommonHandler.instance().bus().register(new ConfigHandler());

        ModItems.register_items();

 

        LogHelper.info("Pre Init Complete");

    }

 

    @Mod.EventHandler

    public void init(FMLInitializationEvent event)

    {

        ModItems.load_textures();

 

        LogHelper.info("Init Complete");

    }

 

 

 

 

The ItemNEPWR (all mod items will extend this class)

 

 

public class ItemNEPWR extends Item

{

    public ItemNEPWR()

    {

        super();

        setCreativeTab(CreativeTabs.tabMisc);

    }

 

    @Override

    public String getUnlocalizedName()

    {

        return String.format("item.%s%s", Textures.RESOURCE_PREFIX, getUnwrappedUnlocalizedName(super.getUnlocalizedName()));

    }

 

    @Override

    public String getUnlocalizedName(ItemStack itemStack)

    {

        return String.format("item.%s%s", Textures.RESOURCE_PREFIX, getUnwrappedUnlocalizedName(super.getUnlocalizedName()));

    }

 

    private String getUnwrappedUnlocalizedName(String unlocalizedName)

    {

        return unlocalizedName.substring(unlocalizedName.indexOf('.') + 1);

    }

 

}

 

 

 

The ModItems class used to register and assign textures to all the items

 

 

public class ModItems

{

    public static final ItemNEPWR coalPiece = new ItemCoalPiece();

 

    public static void register_items()

    {

        GameRegistry.registerItem(coalPiece, Textures.COAL_PIECE);

 

    }

 

    @SideOnly(Side.CLIENT)

    public static void load_textures()

    {

        load_texture(coalPiece);

    }

 

    private static void load_texture(ItemNEPWR item)

    {

        Minecraft.getMinecraft().getRenderItem().getItemModelMesher().register(item, 0, new ModelResourceLocation(Reference.MODID+":"+Textures.COAL_PIECE /*item.getUnlocalizedName().substring(5)*/, "inventory"));

    }

}

 

 

 

 

Since everything else is done in other classes, the Item class itself looks very simple

 

 

public class ItemCoalPiece extends ItemNEPWR

{

    public ItemCoalPiece()

    {

        super();

        this.setUnlocalizedName(Textures.COAL_PIECE);

    }

}

 

 

 

 

All the code is available on github: https://github.com/zlotnleo/NotEnoughPower

http://www.minecraftforge.net/forum/index.php/topic,21354.0.html

3rd paragraph.

As diesieben07 said, your ModID must be lowercase. Also, remember that item.getUnlocalizedName() returns item.[the unlocalizedname]. So,

Minecraft.getMinecraft().getRenderItem().getItemModelMesher().register(item, 0, new ModelResourceLocation(Reference.MODID+":"+itemname, "inventory"));

SHOULD LOOK LIKE THIS:

Minecraft.getMinecraft().getRenderItem().getItemModelMesher().register(item, 0, new ModelResourceLocation(Reference.MODID+":"+ item.getUnlocalizedName().substring(5), "inventory"))

If that doesn't work, then something is wrong with your .json file.

That is not the problem since I override the Item method with my own in ItemNEPWR