Each animatronic has an AI level of 1-20 set every night, the way it works is every 4-5 seconds a number between 1-20 will be randomly generated and if it is less then or equal to the AI level it can move,

So let's say Bonnie has an AI level of 7, and the generated number is 8, then he cannot move, but if it is equal to 7 or less then he can move, and if Bonnie's AI level is 0 then he can't move at all, and the AI level can change on a specific hour.

I'll make an article and a video explaining how the AI moves from place to place soon for those who need it.