AI Scripting Issue

hello, I am trying to make an enemy ai approach a friendly ai, I have done this by using the script:

Code (CSharp):

1.  using UnityEngine;
2. using System.Collections;
3.  
4. public class AIZ_Sight : MonoBehaviour
5. {
6.  
7.     private NavMeshAgent agent;
8.     private AIZ_Movement myAIZ_Movement;
9.     private float height = 0.5f;
10.     public float sightDist = 10f;
11.     public float awareDist = 3f;
12.     private GameObject survivourJD;
13.     private GameObject survivourBO;
14.     public float approachSpeed = 0.75f;
15.     RaycastHit hit;
16.     private float timer;
17.  
18.  
19.     void Start()
20.     {
21.         survivourJD = GameObject.FindGameObjectWithTag("SurvivourJD");
22.         survivourBO = GameObject.FindGameObjectWithTag("SurvivourBO");
23.         agent = GetComponent<NavMeshAgent>();
24.         myAIZ_Movement = GetComponent<AIZ_Movement>();
25.     }
26.  
27.     void Update()
28.     {
29.         timer += Time.deltaTime;
30.         if (Physics.Raycast(transform.position + Vector3.up * height, transform.forward, out hit, sightDist))
31.         {
32.             Approach();
33.         }
34.         if (Physics.Raycast(transform.position + Vector3.up * height, Quaternion.AngleAxis(5, transform.up) * transform.forward, out hit, sightDist))
35.         {
36.             Approach();
37.         }
38.        
39.         if (Physics.Raycast(transform.position + Vector3.up * height, Quaternion.AngleAxis(-10, transform.up) * transform.forward, out hit, sightDist))
40. [B].... [script edited to make it bearable to read]....[/B]
41.         if (Physics.Raycast(transform.position + Vector3.up * height, Quaternion.AngleAxis(-90, transform.up) * transform.forward, out hit, awareDist))
42.         {
43.             Approach();
44.         }
45.     }
46.     void Approach()
47.     {
48.         if (hit.collider.gameObject.tag == "SurvivourJD")
49.         {
50.             agent.SetDestination(survivourJD.transform.position);
51.             agent.speed = approachSpeed;
52.             myAIZ_Movement.enabled = false;
53.         }
54.             if (hit.collider.gameObject.tag == "SurvivourBO")
55.         {
56.             agent.SetDestination(survivourBO.transform.position);
57.             agent.speed = approachSpeed;
58.             myAIZ_Movement.enabled = false;
59.         }
60.  
61.     }
62. }
63.  

This all works fine, however when the friendly ai is killed (which is achieved in a seperate script), I want my enemy ai to go back to myAIZ_Movement script. I have tried this by doing:

Code (CSharp):

1.  if (hit.collider.gameObject.tag == "SurvivourJD")
2.         {
3.             if (survivourJD.activeSelf == true)
4.             {
5.                 agent.SetDestination(survivourJD.transform.position);
6.                 agent.speed = approachSpeed;
7.                 myAIZ_Movement.enabled = false;
8.             }
9.             if (survivourJD.activeSelf == false)
10.             {
11.                 myAIZ_Movement.enabled = true;
12.             }
13.  

However when I play this out, my enemy ai just ends up standing where the friendly ai is even when he is dead, if anyone has any tips, please tell, I have also tried several different techniques all to no avail.

 

Shouldn't you do the GetComponent<>() calls on a gameObject?
I think it would help if you attached the AIZ_Movement Script as well.

 

I've never used GetComponent<>() on another gameObject before, could you explain why this would be better than just using tags and if so, how to do it?
the AIZ_Movement script is just a simple go to a location script, its nothing to fancy, I believe the issue with my script is that I need to make it so that if there is no gameObjects in the enemies field of view, it will automatically go back to the AIZ_Movement script, however I am unaware how to do this.

 

The documentation shows that you actually can call GetComponent on a component. So the way you did it is fine.
I realised that leaving the <> brackets empty in my last post can lead to misunderstandings. You can't call GetComponent without specifying the type of component!

It's important which methods the AIZ_Movement script uses. It may be that you'd have to call them manually after activating the component.
Also, what game object is the AIZ_Sight script attached to?

 

if the survivor has been removed it's not going to return a hit with their tag.

Code (csharp):

1.  
2. void Approach()
3.     {
4.         if (hit.collider.gameObject.tag == "SurvivourJD")
5.         {
6.             agent.SetDestination(survivourJD.transform.position);
7.             agent.speed = approachSpeed;
8.             myAIZ_Movement.enabled = false;
9.         }
10.         else if (hit.collider.gameObject.tag == "SurvivourBO")
11.         {
12.             agent.SetDestination(survivourBO.transform.position);
13.             agent.speed = approachSpeed;
14.             myAIZ_Movement.enabled = false;
15.         }
16.         else
17.         {
18.             myAIZ_Movement.enabled = true;
19.         }
20.  
21.     }
22.  

 

quick update:
I have just solved this issue by making another gameObject teleport to the area in which an friendly AI has been destroyed. This gameObject then enables the AIZ_Movement script, although this may not be the cleanest way of achieving my goal, it seems to work very well, thank you for your help though!