[1.12][Solved] How to change an item texture based on the amount in the stack

[benjamin7006]

Hi!

I'm trying to create a shard for one of my items where you cut it and it gives you it's shard's, I want the texture to change based on the amount in the stack, for example, if the ItemStack limit was 2 then if you held there was only 1 in the stack then the texture would show 1 shard but if there was 2 in the texture would change to show 2 shards.

 

What code do I have to use to make different variants for the same item and how do I get the item to change variants?

 

Edit: Nevermind I figured out how!

 

Here is how I did it

 

In my common proxy, I added 

public void registerItemVariant(Item item, ItemMeshDefinition meshDefinition, ModelResourceLocation... names) {}

and in my client proxy, I added 

@Override
public void registerItemVariantRenderer(Item item, ItemMeshDefinition meshDefinition, ModelResourceLocation... names) {
   	ModelBakery.registerItemVariants(item, names);
    ModelLoader.setCustomMeshDefinition(item, meshDefinition);
}

 

Next, I created a new class called ItemMeshDefinitionHandler and did this

public class ItemMeshDefinitionHandler implements ItemMeshDefinition {

    @Override
    public ModelResourceLocation getModelLocation(ItemStack stack) {
        if(stack.getItem() == ItemInit.DIAMOND_SHARD) {
            if(stack.getCount() == 1) {
                return new ModelResourceLocation(stack.getItem().getRegistryName() + "_1", "inventory");
            } else if (stack.getCount() == 2) {
                return new ModelResourceLocation(stack.getItem().getRegistryName() + "_2", "inventory");
            } else  {
                return new ModelResourceLocation(stack.getItem().getRegistryName() + "_2", "inventory");
            }
        } else if(stack.getItem() == ItemInit.COAL_SHARD) {
            if(stack.getCount() == 1) {
                return new ModelResourceLocation(stack.getItem().getRegistryName() + "_1", "inventory");
            } else if (stack.getCount() == 2) {
                return new ModelResourceLocation(stack.getItem().getRegistryName() + "_2", "inventory");
            } else  {
                return new ModelResourceLocation(stack.getItem().getRegistryName() + "_2", "inventory");
            }
        }        
        
        return null;
    }

}

 

Then in a new class named ItemShard and extended my ItemBase class (In my ItemBase class it implements IHasModel) and did this

public class ItemShard extends ItemBase {
    
    public String name;
    
    public ItemShard(String name, CreativeTabs creativeTab) {
        super(name, creativeTab);
        this.name = name;
        setMaxStackSize(8);
    }
    
    @Override
    public void registerModels() {
        Main.proxy.registerItemVariantRenderer(this, new ItemMeshDefinitionHandler(), new ModelResourceLocation(Reference.MOD_ID + ":" + name + "_1", "inventory"), new ModelResourceLocation(Reference.MOD_ID + ":" + name + "_2", "inventory"));
        
    }
}

 

Then finally I added the item to my ItemInit

public static final Item DIAMOND_SHARD = new ItemShard("diamond_shard", Main.CreativeTab);

 

Edited August 23, 2019 by benjamin7006
Solved! plus added a tiny tutorial

[DavidM]

4 hours ago, benjamin7006 said:

Next, I created a new class called ItemMeshDefinitionHandler and did this

public class ItemMeshDefinitionHandler implements ItemMeshDefinition {

    @Override
    public ModelResourceLocation getModelLocation(ItemStack stack) {
        if(stack.getItem() == ItemInit.DIAMOND_SHARD) {
            if(stack.getCount() == 1) {
                return new ModelResourceLocation(stack.getItem().getRegistryName() + "_1", "inventory");
            } else if (stack.getCount() == 2) {
                return new ModelResourceLocation(stack.getItem().getRegistryName() + "_2", "inventory");
            } else  {
                return new ModelResourceLocation(stack.getItem().getRegistryName() + "_2", "inventory");
            }
        } else if(stack.getItem() == ItemInit.COAL_SHARD) {
            if(stack.getCount() == 1) {
                return new ModelResourceLocation(stack.getItem().getRegistryName() + "_1", "inventory");
            } else if (stack.getCount() == 2) {
                return new ModelResourceLocation(stack.getItem().getRegistryName() + "_2", "inventory");
            } else  {
                return new ModelResourceLocation(stack.getItem().getRegistryName() + "_2", "inventory");
            }
        }        
        
        return null;
    }

}

 

You might want to use string concatenation instead of the large bulk of ifs.

Edited August 23, 2019 by DavidM

[Draco18s]

return new ModelResourceLocation(stack.getItem().getRegistryName() + "_" + Math.min(stack.getCount(),3), "inventory");