Enemy's NavMesh not working

Question

Hey guys.

I'm new in Unity and I don't know why my code doesn't work. When range is under 15, enemy should chase player, but instead of this it stops. Also, it is a little lagged when arrives at each point. How can I resolve this?

 public Transform[] patrolPoints;
 public float moveSpeed;
 private int currentPoint;
 private GameObject Player1;
 private  GameObject currentPlayer;
 private bool Patrolling = true;
 private NavMeshAgent navComp;

 // Use this for initialization
 void Start () {        

     currentPoint = 0;
     Player1 = GameObject.FindGameObjectWithTag ("Player");
     currentPlayer = Player1;
     navComp = this.GetComponent<NavMeshAgent> ();
 //    transform.position = patrolPoints [0].position;
 }

 // Update is called once per frame
 void Update () {
     
     float range = Vector3.Distance (transform.position, currentPlayer.transform.position);
     transform.position = Vector3.MoveTowards (transform.position, patrolPoints [currentPoint].position, moveSpeed * Time.deltaTime);

     if (Patrolling) {

         if (transform.position == patrolPoints [currentPoint].position) {
             currentPoint++;
         }

         if (currentPoint >= patrolPoints.Length) {
             currentPoint = 0;
         }

         if (range <= 15) {
             Patrolling = false;
         }
         //transform.LookAt (patrolPoints [currentPoint].transform.position);        

     }

     else if (Patrolling == false) {

         //transform.position = Vector3.MoveTowards (transform.position, currentPlayer.transform.position, moveSpeed * Time.deltaTime);
         navComp.SetDestination(currentPlayer.transform.position);

         if (range >= 20) {
             Patrolling = true;
         }
     
         }

     }
 
 }

Answer 1

I figured out what was happening. Movetowards shouldn't be free in Update! Here is the code, working now!

 public Transform[] patrolPoints;
 public float moveSpeed;
 private int currentPoint;
 private GameObject Player;
 private bool Patrolling = true;
 private NavMeshAgent navComp;

 // Use this for initialization
 void Start () {        

     currentPoint = 0;
     Player = GameObject.FindGameObjectWithTag ("Player");    
     navComp = this.GetComponent<NavMeshAgent> ();
 //    transform.position = patrolPoints [0].position;
 }

 // Update is called once per frame
 void Update () {
     
     float range = Vector3.Distance (transform.position, Player.transform.position);

     if (range <= 20) {
         Patrolling = false;
     }
     else if (range >= 20) {
         Patrolling = true;
     }

     if (Patrolling) {

         navComp.enabled = false;

         transform.LookAt (patrolPoints [currentPoint].transform.position);
         transform.position = Vector3.MoveTowards (transform.position, patrolPoints [currentPoint].position, moveSpeed * Time.deltaTime);

         if (transform.position == patrolPoints [currentPoint].position) {
             currentPoint++;
         }

         if (currentPoint >= patrolPoints.Length) {
             currentPoint = 0;
         }

     }

     else if (Patrolling == false) {

         //transform.position = Vector3.MoveTowards (transform.position, currentPlayer.transform.position, moveSpeed * Time.deltaTime);
         navComp.enabled = true;
         navComp.SetDestination(Player.transform.position);

     
         }

     }
 
 }

Answer 2

Answer by ZBlaxland · Oct 17, 2016 at 07:24 AM

I don't know if it helps, but here is a JavaScript that you may be able to use instead:

 var theplayer : GameObject;
 var speed : float;
 var range : int;
 var explosion : GameObject;
 function Update () {
 
 //RANGE - calculate the distance between the enemy and the player
 range=Vector3.Distance(theplayer.transform.position,transform.position);
 
 //AWARENESS – make the enemy look at the player when within 40 meters
 if (range<40){
     transform.LookAt(theplayer.transform.position);
 }
 
 //CHASE - move toward the player when within 15 and 30 meters
 if (range<30&&range>15){
     transform.Translate(Vector3.forward*speed);
 }
     
 //RETREAT – move away from the player when within 12 meters
 if (range<12){
     transform.Translate(-Vector3.forward*speed);
 }
 
 //DESTROY – Create an explosion and destroy the enemy when within 5 meters
 if (range<5){
     Instantiate(explosion,transform.position,transform.rotation);
     Destroy(gameObject);
 }
 }

The values for speed and whatnot are easily changed, just remember to drag you character etc. into the given spaces on the script in the inspector before loading the game

Hope it works for you :D

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vithorescames · Oct 17, 2016 at 11:28 AM 0

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Oh, I used a code similar to this, but I need the NavMesh to patchfinding, you know? I apreccitate your effort!

ZBlaxland vithorescames · Oct 17, 2016 at 11:49 AM 0

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Sorry I have no idea then :/

Enemy's NavMesh not working

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