Ai has been in games for decades. No, not llm Ai. Enemy movement is a classic case of Ai. Hell chess has been running on Ai for years depending on your platform(yes you can play against other people in most cases but most cases also have a play against Ai mode)
What did they mean by Ai in the question? Better question, what did the responders think they meant?
Wait...not being able to use a basic library like string.h opens up so many other questions