So I've made an FPS, nothing too crazy, all it has is a few opening doors, hidden doors, a single pistol and a few enemies, problem is the enemies just stand there, not even that! They are cuboids with a terrible material I made on Photoshop! I need help developing an enemy AI with will make them chase me around and attack me, I want to get then to shoot me eventually but I need the basic script of them seeing me at a certain distance and chasing me. I am currently teetering on the edge of designing my own Enemy or getting one from the asset store. Please help me develop an AI that will help me make my game!