Do some 3D Modelling -- 2

using UNITY3D engine. Design a small house with child room, small backyard, stairs to upper room, putting some room stuffs like studying table, bed .. etc. I have a two dimensional float array in a text file (15 by 15), I read this array in unity and connect each value to a corresponding plane put in front of FP camera, a specific material/texture is loaded to the plane according to the corresponding value (each represent a grade of blur). Now I want to make two game views one for the FP camera (with the array attached) and the other is for 3rdP, both that navigate a route inside the house depending on what the avatar see (the blur spots in the camera should obscure the avatar vision, so through navigation it might bump into room stuff or step of stairs. Guys, the 3D model of the house and stuff is not my concern, I CONCERN on how to make the FPS navigate through the house automatically without a control of the user. I mean how to make the FPS walk and reach (navigate to) for a specific object without any user control. YOU should have an experience on scripting to write an algorithm to do that.