I am working on an old-school grid-based first-person dungeon crawler and my prototype is almost complete. The only thing I have to work on is enemy path-finding. My enemy has a wander AI that is active when the FoundPlayer bool is false. He has a box collider that is stretched out really far in order to detect the player GameObject. As soon as I start scripting, I come to a halt. I am completely clueless how to lay this out.
Another thing you may spot is inefficient is the Random.Range to check when to move; however, I had to increase the value so as the enemy does not move as often. If you can suggest a more effective/efficient approach, I’m all ears 
Here is my enemy movement script:
using UnityEngine;
using System.Collections;
public class EnemyMovement : MonoBehaviour {
public static bool CanMoveForward;
public bool FoundPlayer;
//Translation:
float movSpeed = 4.0f;
Vector3 pos;
Transform tr ;
public static bool moving = false;
//Rotation:
public static bool rotating = false;
public float rotSpeed = 360f;
float rotDegrees = 0f;
Quaternion rotToAngle ;
void Start () {
pos = transform.position;
tr = transform;
CanMoveForward = true;
FoundPlayer = false;
}
// Update is called once per frame
void Update () {
int randomValue = Random.Range (1, 100);
Debug.DrawRay(transform.position, transform.forward, Color.red);
if (!moving && !rotating && !FoundPlayer) {
if (randomValue == (1 | 2) && tr.position == pos && CanMoveForward) {
pos += transform.forward;
moving=true;
}
else if (randomValue == 5 && tr.position == pos) {
rotDegrees -= 90f;
rotToAngle = Quaternion.Euler(0, rotDegrees, 0);
rotating = true;
}
else if (randomValue == 6 && tr.position == pos) {
rotDegrees += 90f;
rotToAngle = Quaternion.Euler(0, rotDegrees, 0);
rotating = true;
}
} else if (FoundPlayer) {
}
//Translation:
if (moving) {
if (Vector3.Distance(transform.position,pos) <0.05f){
transform.position = pos;
moving=false;
// print ("FINISHED MOVE");
} else {
transform.position = Vector3.MoveTowards(transform.position, pos, Time.deltaTime * movSpeed);
}
}
//Rotation:
if (rotating) {
if (Quaternion.Angle(transform.rotation,rotToAngle) <10f) {
transform.rotation = rotToAngle;
rotating=false;
// print ("FINISHED TURN");
} else {
transform.rotation = Quaternion.RotateTowards(transform.rotation, rotToAngle, rotSpeed * Time.deltaTime);
}
}
}
}
Thanks in advance!