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Question by NightCode · Jan 11, 2016 at 03:50 PM · c#errorhow

How do i fix this error?

How to fix this error: NullReferenceException: Object reference not set to an instance of an object NewBehaviourScript2.Update () (at Assets/Scripts/NewBehaviourScript2.cs:17)

Scripts: NewBehaviourScript:

 using UnityEngine;
 using System.Collections;
 
 public class NewBehaviourScript : MonoBehaviour {
 
     Transform hareket;
     public float Hiz = 3.0f;
 
     // Başlangıçta çalıştırılır.
     void Start () {
         hareket = transform;
         hareket.position = new Vector2 (224, 312);
     }
 
     // Her framede bir kez çalıştırılır.
     void Update () {
         hareket.Translate(Input.GetAxis("Horizontal")*Vector2.right*Hiz*Time.deltaTime);
         hareket.Translate(Input.GetAxis("Vertical")*Vector2.up*Hiz*Time.deltaTime);
 
         if (hareket.position.x > 237) {
             hareket.position = new Vector2 (211, 321);
         }
 
         if (hareket.position.x < 211) {
             hareket.position = new Vector2 (237, 321);
         }
     }
 }

NewBehaviourScript1:

 using UnityEngine;
 using System.Collections;
 
 public class NewBehaviourScript1 : MonoBehaviour {
     public int score=0;
     // Başlangıçta çalışır.
     void Start () {
     }
 
     // Her framede çağırılır.
     void Update () {
 
     }
 
     // Belirli bir nesneye deydiğinde çalışır.
     void OnCollisionEnter2D(Collision2D coll)
     {
         if (coll.gameObject.name == "1Score") {
             score++;
             Destroy (coll.gameObject);
             Debug.Log (score);
         }
     }
 }
 

NewBehaviourScript2:

 using UnityEngine;
 using System.Collections;
 
 public class NewBehaviourScript2 : MonoBehaviour {
 
     Transform hareket2;
     public NewBehaviourScript1 kod;
 
     // Use this for initialization
     void Start () {
         hareket2 = transform;
         hareket2.position = new Vector2 (210,320);
     }
 
     // Update is called once per frame
     void Update () {
         if (kod.score == 1) {
             hareket2.position = new Vector2 (213, 320);
         }
     }
 }
 




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avatar image NightCode · Jan 09, 2016 at 01:08 PM 0
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I tried to change a variable in NewBehaviourScript1 from NewBehaviourScript2.

avatar image gjf NightCode · Jan 09, 2016 at 04:28 PM 0
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you need to set your variable kod to a reference of NewBehaviourScript1

you can do that by finding the game object it's attached to and using GetComponent() - check the documentation for finding game objects and using GetComponent()

avatar image NightCode gjf · Jan 10, 2016 at 03:53 PM 0
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Thank you.

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