i need to make an ai (image) that hugs and moves around walls, basically it should always have a wall on an adjecent tile, and move with the wall. i tried for the past hours with no, to little success, (and yes, i did google it) i hope someone that done this before, is willing to share some code, you will be credited in my next lua

heres an image with 4 simple examples
image (direct link)