I have an item which needs to change its model based on NBT.

 

How do I go about utilizing and implementing an item with NBT that can take advantage of the ModelLoader.setCustomMeshDefinition()

 

I was reading this article https://gist.github.com/williewillus/57d7093efa80163e96e0

It was suggested that, "You can do things like return different models depending on NBT" when using ModelLoader.setCustomMeshDefinition()
Now I've read a lot of articles from Choonster and other informed members of the community. I have yet to succeed with anything I have tried due to the lack of concrete complete implementations.
I am already aware of how to write NBT data to an item.

Anyones help with this will be greatly appreciated but if you do intend to leave an answer please be patient and leave a well informed detailed response or please link a source code example as reference.
Thanks!

Create a new instance of ItemMeshDefinition, and in the one method return the proper ModelResourceLocation for that variant. You have a ItemStack parameter to use to get the NBT from.

You first need to register each possible model location using ModelBakery.registerItemVariants. This tells Minecraft to load the models.

 

Your implementation of ItemMeshDefinition#getModelLocation receives the ItemStack being rendered and needs to return a ModelResourceLocation pointing to the desired model. You can use any aspect of the ItemStack (or none) to determine the model location, including NBT.

 

I have an explanation of how ModelResourceLocations are mapped to model files here.

3 minutes ago, Animefan8888 said:

Create a new instance of ItemMeshDefinition, and in the one method return the proper ModelResourceLocation for that variant. You have a ItemStack parameter to use to get the NBT from.

 

1 minute ago, Choonster said:

You first need to register each possible model location using ModelBakery.registerItemVariants. This tells Minecraft to load the models.

 

Your implementation of ItemMeshDefinition#getModelLocation receives the ItemStack being rendered and needs to return a ModelResourceLocation pointing to the desired model. You can use any aspect of the ItemStack (or none) to determine the model location, including NBT.

 

I have an explanation of how ModelResourceLocations are mapped to model files here.

Thank you both for the response, can I get a more concrete example. Like a source code example to use as reference?

Hopefully I understand it correctly for you (never used it).

ModelBakery.registerItemVariants(Items.APPLE, Items.APPLE.getRegistryName(), new ResourceLocation("modid", "fileName"));
		ModelLoader.setCustomMeshDefinition(Items.APPLE, new ItemMeshDefinition() {
			
			@Override
			public ModelResourceLocation getModelLocation(ItemStack stack) {
				if (stack.hasTagCompound()) {
					if (stack.getTagCompound().getBoolean("charged")) {
						// return new ModelResourceLocation to charged sub type
					} else {
						// return new ModelResourceLocation to not charged sub type
					}
				}
				return new ModelResourceLocation(stack.getItem().getRegistryName(), "inventory");
			}
		});

 

14 minutes ago, Animefan8888 said:

Hopefully I understand it correctly for you (never used it).

ModelBakery.registerItemVariants(Items.APPLE, Items.APPLE.getRegistryName(), new ResourceLocation("modid", "fileName"));
		ModelLoader.setCustomMeshDefinition(Items.APPLE, new ItemMeshDefinition() {
			
			@Override
			public ModelResourceLocation getModelLocation(ItemStack stack) {
				if (stack.hasTagCompound()) {
					if (stack.getTagCompound().getBoolean("charged")) {
						// return new ModelResourceLocation to charged sub type
					} else {
						// return new ModelResourceLocation to not charged sub type
					}
				}
				return new ModelResourceLocation(stack.getItem().getRegistryName(), "inventory");
			}
		});

 

Thanks, will give it a shot!

@Animefan8888 this goes in my RegistryRender which gets initialized in the main class yes?

1 minute ago, kitsushadow said:

@Animefan8888 this goes in my RegistryRender which gets initialized in the main class yes?

I would say so, that is where it would make the most sense to me, make sure it is after ItemRegistry and during preInit, or in the ModelRegistryEvent.

@Animefan8888  so I gave that a try and I'm pretty close. I think the next step is the json trickery to make it work.
 

The model with no NBT loads as seen in the creative mode inventory. The model WITH NBT fails to load.

I have a stonetongs.json and a stonetongs_defualt.json in the models/item directory

If you'd like to view the source code you can find it here. https://github.com/kitsushadow/forgecraft/tree/master/1.11/src/main

 

RenderRegistry

    public static void registerCustomRenders(){
        ModelBakery.registerItemVariants(ModItems.stonetongs, ModItems.stonetongs.getRegistryName(), new ResourceLocation(ModInfo.MOD_ID, "stonetongs"));
        ModelLoader.setCustomMeshDefinition(ModItems.stonetongs, new ItemMeshDefinition() {

            @Override
            public ModelResourceLocation getModelLocation(ItemStack stack) {
                if (stack.hasTagCompound()) {
                    //if (stack.getTagCompound().getInteger("type")) {
                      if (stack.getTagCompound().getInteger("type") == 0 ){
                        return new ModelResourceLocation(stack.getItem().getRegistryName() + "_default");
                    } else {
                          return new ModelResourceLocation(stack.getItem().getRegistryName(), "inventory");
                    }
                }
                return new ModelResourceLocation(stack.getItem().getRegistryName(), "inventory");
            }
        });
    }

 

ItemClass

public class ItemStoneTongs extends Item {

    public ItemStoneTongs(String unlocalizedName) {
        setUnlocalizedName(unlocalizedName);
        this.setRegistryName(unlocalizedName);
        //this.setMaxDamage(0);
        //this.setHasSubtypes(true);  //This just says the item has metadata
        this.setMaxStackSize(1);
        this.setCreativeTab(ModInfo.TAB_FORGECRAFT);
    }


    public void onUpdate(ItemStack item, World world, Entity player, int itemSlot, boolean isSelected) {
        if (!item.hasTagCompound()) {
            item.setTagCompound(new NBTTagCompound());
            item.getTagCompound().setInteger("type", 0);
        }
    }

    public EnumActionResult onItemUse(EntityPlayer player, World world, BlockPos pos, EnumHand hand, EnumFacing facing, float hitX, float hitY, float hitZ)
    {
        //pos = pos.offset(facing);
        ItemStack itemstack = player.getHeldItem(hand);

        if (world.getBlockState(pos).getBlock() == ModBlocks.bloomery) {
            TileBloomery tile = (TileBloomery) world.getTileEntity(pos);
            System.out.println(tile.getSlotStack(1));
            //itemstack.damageItem(1, player);
            return EnumActionResult.SUCCESS;
        } else return EnumActionResult.FAIL;
    }

}

 

Edited February 3, 20178 yr by kitsushadow

You call ModelBakery.registerItemVariants with the registry name of ModItems.stonetongs (which is presumably <modid>:stonetongs) and <modid>:stonetongs, but your ItemMeshDefinition returns the registry name with the _default suffix (<modid>:stonetongs_default which you haven't registered).

@Animefan8888 @Choonster

You all are lifesavers! It's working now! 

Thanks again for your help. For those looking for the final solution I have linked my source code here

https://github.com/kitsushadow/forgecraft/tree/master/1.11/src/main

 

The files that you would need to look at are:
init/ModItems.java

items/ItemStoneTongs.java

proxy/ClientProxy.java

ForgeCraft.java

resources/models/item/