[ Tutorial ] Custom Model Data ( Dynamically Change Item Textures! )

Welcome to this tutorial :D!

We first need to change our items json model to use custom model data

Go to your resources/assets/"MODID"/models/item/"ITEM MODEL"

In this case, im using amethyst.json

Open it using notepad and you should see something like this :

{
  "parent": "item/generated",
  "textures": {
    "layer0": "'MODID':items/'ITEM TEXTURE'"
  } 

}

Add this to the json model:
 

,
    "overrides": [
        { "predicate": { "custom_model_data": 1}, "model": "'MODID':item/'ITEM TEXTURE'custommodeldatafolder/1" },

        { "predicate": { "custom_model_data": 2}, "model": "'MODID':item/'ITEM TEXTURE'custommodeldatafolder/2" },

        { "predicate": { "custom_model_data": 3}, "model": "'MODID':item/'ITEM TEXTURE'custommodeldatafolder/3" },

        { "predicate": { "custom_model_data": 4}, "model": "'MODID':item/'ITEM TEXTURE'custommodeldatafolder/4" },

        { "predicate": { "custom_model_data": 5}, "model": "'MODID':item/'ITEM TEXTURE'custommodeldatafolder/5" },

        { "predicate": { "custom_model_data": 6}, "model": "'MODID':item/'ITEM TEXTURE'custommodeldatafolder/6" },

        { "predicate": { "custom_model_data": 7}, "model": "'MODID':item/'ITEM TEXTURE'custommodeldatafolder/7" }
  ]

it should look like this:

{
  "parent": "item/generated",
  "textures": {
    "layer0": "'MODID':items/'ITEM TEXTURE'"
  } ,
    "overrides": [
        { "predicate": { "custom_model_data": 1}, "model": "'MODID':item/'ITEM TEXTURE'custommodeldatafolder/1" },

        { "predicate": { "custom_model_data": 2}, "model": "'MODID':item/'ITEM TEXTURE'custommodeldatafolder/2" },

        { "predicate": { "custom_model_data": 3}, "model": "'MODID':item/'ITEM TEXTURE'custommodeldatafolder/3" },

        { "predicate": { "custom_model_data": 4}, "model": "'MODID':item/'ITEM TEXTURE'custommodeldatafolder/4" },

        { "predicate": { "custom_model_data": 5}, "model": "'MODID':item/'ITEM TEXTURE'custommodeldatafolder/5" },

        { "predicate": { "custom_model_data": 6}, "model": "'MODID':item/'ITEM TEXTURE'custommodeldatafolder/6" },

        { "predicate": { "custom_model_data": 7}, "model": "'MODID':item/'ITEM TEXTURE'custommodeldatafolder/7" }
  ]

}

Now make a folder in  resources/assets/"MODID"/models/item/ named 'ITEM TEXTURE'custommodeldatafolder

Add your item models inside that folder named 1/2/3/4/5/6/7 depending on your custom model

Now to change the custom model data of an itemstack :D

add this block to your procedure:

Andd your done :D 

if you want to have more than 7 custom model datas, just add

,

        { "predicate": { "custom_model_data":'NUMBER'}, "model": "'MODID':item/'ITEM TEXTURE'custommodeldatafolder/'NUMBER'" }

and so on