Question by kyle-hope · Mar 07, 2019 at 08:36 PM · scripting problem ai error message waypoints waypoint system

Error with AI going to Waypoints,Issues with AI tracking waypoints

Hello, I have been trying to develop my own AI based off of the Unity Pluggable AI lesson - however I've been running into a bit of an issue when trying to implement some sort of waypoint system to my AI. The error I keep getting is:

  NullReferenceException: Object reference not set to an instance of an object
  EnemyManager.SetupAI (System.Collections.Generic.List`1 wayPointList) (at 
  Assets/EnemyManager.cs:25)
  GameManager2.SpawnAI (System.Collections.Generic.List`1 waypoints) (at 
  Assets/GameManager2.cs:28)
  GameManager2.Start () (at Assets/GameManager2.cs:18)

I've been trying to fix this, however no matter what I've done I haven't figured it out and I'm out of ideas. Below is the c# scripts for three of my classes with (the three associated with the making the AI and the error itself), any help would be appreciated, thanks!

GameManager2 Class:

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

  public class GameManager2 : MonoBehaviour {

 public GameObject[] m_EnemyPrefabs;
 public EnemyManager[] m_Enemy;
 public List<Transform> wayPointsForAI;

 private WaitForSeconds m_StartWait;

 void Start () {
     m_StartWait = new WaitForSeconds (1);
     SpawnAI (wayPointsForAI);

     StartCoroutine (GameLoop ());
 }

 private void SpawnAI(List<Transform> waypoints){
     for (int i = 0; i < m_Enemy.Length; i++) {
         m_Enemy [i].m_Instance = Instantiate (m_EnemyPrefabs [i], m_Enemy [i].m_SpawnPoint.position, m_Enemy [i].m_SpawnPoint.rotation) as GameObject;

         m_Enemy [i].m_PlayerNumber = i;
         m_Enemy [i].SetupAI(waypoints);
     }
 }

}

EnemyManager:

  using System.Collections;
   using System.Collections.Generic;
   using System;
   using UnityEngine;
   using UnityEngine.AI;
 
  [Serializable]
  public class EnemyManager {

 public Transform m_SpawnPoint;

 [HideInInspector] public int m_PlayerNumber;            
 [HideInInspector] public GameObject m_Instance;
 [HideInInspector] public List<Transform> m_WayPointList;

 private StateController m_StateController;
 private EnemyMovement m_Movement;
 private GameManager2 m_GameManager;

 public void SetupAI(List<Transform> wayPointList){

     m_StateController = m_Instance.GetComponent<StateController> ();
     m_StateController.SetupAI(true, wayPointList);

     MeshRenderer[] renderers = m_Instance.GetComponentsInChildren<MeshRenderer> ();
 }

StateManager:

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

  public class StateController : MonoBehaviour {

 public State currentState;
 public State remainState;

 public Transform eyes;

 [HideInInspector] public NavMeshAgent navMeshAgent;
 [HideInInspector] public List<Transform> wayPointList;
 [HideInInspector] public int nextWayPoint;
 [HideInInspector] public Transform chaseTarget;
 [HideInInspector] public float stateTimeElapsed;

 private bool aiActive;

 void Awake(){
     navMeshAgent = GetComponent<NavMeshAgent> ();
 }

 public void SetupAI(bool aiActivation, List<Transform> wayPoints)
 {
     wayPointList = wayPoints;
     aiActive = aiActivation;
     if (aiActive) 
     {
         navMeshAgent.enabled = true;
     } else 
     {
         navMeshAgent.enabled = false;
     }
 }

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