Enemy patrol AI

EnemyAI.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class EnemyAI : MonoBehaviour {



	public List<Transform> patrolPos = new List<Transform>();
	public int posIndex = 0;
	public float speed = 0.3f;
	public float rotSpeed = 0.2f;
	bool look = true;
	public int waitTime = 30;
	void Start () {
		
	}

	void Update () {

		Movement ();

	}

	void Movement(){
		
		if(look == true){
			ChangeRot ();
		}else{
			Walk ();
		}
	}


	void Walk(){

		transform.position = Vector3.MoveTowards (transform.position, patrolPos[posIndex].position, speed);

		if (Vector3.Distance (transform.position, patrolPos [posIndex].position) < 0.5f) {

			posIndex++;
			posIndex = posIndex % patrolPos.Count;
			look = true;

		}

	}


	float zRot;
	int lookTimer = 0;
	void ChangeRot(){
		//rotation logic
		float AngleRad = Mathf.Atan2 ( patrolPos [posIndex].position.y - transform.position.y,  patrolPos [posIndex].position.x - transform.position.x);
		float angle = (180 / Mathf.PI) * AngleRad;
		zRot = Mathf.LerpAngle(zRot,angle,rotSpeed);
		transform.localEulerAngles= new Vector3(0,0, zRot);

		//timer logic
		if (look) {
			lookTimer++;
			if (lookTimer > waitTime) {
				lookTimer = 0;
				look = false;
			}
		}

	}


}