Change entity texture on-the-go

[Shahram]

My plan is to provide a resource pack to the players with extra textures for certain entities such as the creeper. What I'm trying to figure out is how I would change an entity's texture to a particular resource in the resource pack through Minecraft Forge? I'm not sure if this is possible, if anyone could provide some insight into this problem, it would be greatly appreciated. 

[Shahram]

Sort of. I'm developing a mod and what I'm wanting to do is provide a texture in the resource pack. Let's imagine I had an item with which I right clicked a creeper. I'd want the entity's texture to change to the texture I have in the resource pack. Is this possible? If so, got any idea how I'd go about it? What I was trying to get at in the original post was that there would be the default texture for the creeper plus some extra textures that I wanted to switch to during the game. 

 

Edit: the reason I mention the idea of the resource pack is I want this to be a purely server-side mod and as far as I can see, that's the only way to provide the extra texture this whole idea happens to hinge on. 

Edited July 3, 2018 by Shahram

[Shahram]

I see, so there's no way to spawn in an entity (e.g. creeper) with a different texture to its default that's provided in a resource pack sent to the client? 

Edited July 3, 2018 by Shahram