I need help with implementing Optifine into my mod.

[Losokos]

I could not find any info on this ANYWHERE, and i've been searching for 2 days now...

For context, i need to use some of optifine's functions into the mod, in order to do what i need to do.

I've tried simply putting the optifine forge version into /run/mods folder, but that does not work.
I've tried just putting optifine's source files into /src/ folder, does not work.

I need optifine's methods in order to create a 3D custom armor model, so if there is any other way to do it, PLEASE let me know...
I am also trying to create a tool set that changes its texture, depending on its durability level. I've downloaded and copy pasted code from "Broken Tools" mod

( changing its files accordingly of course ), and it does not work with my textures and my files, no matter what i try to change with it, i literally tried everything...
And so i found out that optifine has the ability to do this for me.

I am using IntelliJ IDEA.

[Losokos]

Awesome! thanks, but i still need it for the tool breaking part, or do you have any other suggestions?

[Losokos]

Okay, thanks a lot! I will see if this works.