through a plugin written through very advanced c or c++ code that can take years to write and that probably won't work

i'm sorry, but your question is stupid.
I can tell you've done 0 research before posting

In Maya, you don't make AI. You animate the characters. You are the puppetmaster, the characters are the puppets. They don't think, or do anything for themselves. But when u animate them, you can make them "seem" to think for themselves if you do it right, by animating realistically and etc.