This question was closed Jan 28, 2018 at 11:09 PM by alphanike97 for the following reason:

The question is answered, right answer was accepted

Question by alphanike97 · Jan 28, 2018 at 10:56 PM · error vector3 ai distance

Error with vector3.distance

Hi, could you tell me why the Vector3.Distance function gives me an error of "Object reference not set to an object"

 using UnityEngine;
 using System.Collections;
 using UnityEngine.AI;
 public class IAbasica : MonoBehaviour {
     NavMeshAgent agent;
     GameObject target;
     Animator anim;
     public float Health;
     public float currentDistance;
     public UnityStandardAssets.Characters.FirstPerson.RigidbodyFirstPersonController rb;
     public int DamagePlayerF;
 
     private void FixedUpdate() {
         currentDistance = Vector3.Distance(transform.position, target.transform.position);
 
     }
     void Update () {
 
         anim = GetComponent<Animator>();
 
         agent = GetComponent<NavMeshAgent>();
 
         target = GameObject.FindGameObjectWithTag("Player");
 
         agent.SetDestination(target.transform.position);
 
         if (currentDistance <= 3f) {
             StartCoroutine(DamagePlayer());
         }
 
     }
     IEnumerator DamagePlayer() {
         rb.TotalHealth = rb.CurrentHealth - DamagePlayerF;
         yield return new WaitForSeconds(3f);
     }
 
     public void TakeDamage(float amount){
         Health -= amount;
         if(Health <= 0f)
             Die();
     }
     void Die (){
         Destroy (gameObject);
     }
 }

Add comment · Show 2

Positive7 · Jan 28, 2018 at 11:07 PM 1

Probably "target" is null.

 if (target != null)
     {
          Debug.Log("Yay found target!");
          currentDistance = Vector3.Distance(transform.position, target.transform.position);
     }
     else
     {
          Debug.Log("Target was null!");
     }

But this script has more errors...