Hello, I need to be able to have a method for giving each instance of EntityPlayer a variable. Like experiencetotal for each player is a variable in EntityPlayer as an integer and stored in the entities NBT. I would like to know how to assign more variables to a player, much like this, but without editing the base class of that player, how could it be done?

Wondering about the same. And what would be the best way to edit a function of a baseclass, say, the breeding function of an EntitySheep?

If anyone can help with this I'd be really appreciative

Look at EntityRegistry there is a remove spawn function, then u create the new entity file using vannila model and render.

For EntityPlayer would that be possible?

i didn´t tried yet, but if not work u casn use asm.