Object reference not set to an instance of an object (Please help)

Hello,

I got a script were iam working on, and testing new things. But i tried to get acces to an script thats is in a gameobject so that i can change variables. The strange thing about this is, that i can change the variable's but also get a error. Normaly when a line contains errors it's not working, but in this case it's stil working . I hope someone can see what's wrong with my code.

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class Soldier1_Swing_Sword_Test : MonoBehaviour {
5.  
6.     public RaycastHit hit;
7.     public int damage;
8.     public bool hite;
9.     public float Old_Y;
10.     public static bool Taken_Damage;
11.     public static bool good;
12.     public GameObject soldier1;
13.     public Soldier1_AI_Test other;
14.     public bool test;
15.     // Use this for initialization
16.     void Start () {
17.         Taken_Damage = false;
18.         damage = 20;
19.         Old_Y = 0.0f;
20.  
21.         other = (Soldier1_AI_Test) soldier1.GetComponent(typeof(Soldier1_AI_Test));
22.     }
23.    
24.     // Update is called once per frame
25.     void Update () {
26.  
27. //this line gives a error    
28. test = other.Is_Swinging;
29.         if(test == true && hite == false){
30.             if(Physics.Raycast(transform.position, transform.TransformDirection(Vector3.up), out hit)){
31.                 float distance = hit.distance;
32.                 if(hit.transform.tag == "Enemy"){
33.                     Debug.Log ("Enemy has been hit");
34.                     hite = true;
35.                     good = true;
36.                     hit.transform.SendMessage("ApplyDamage", damage, SendMessageOptions.DontRequireReceiver);
37.                 }
38.  
39.                 Old_Y = hit.transform.position.y;
40.                 StartCoroutine(Damage_Timer());
41.             }
42.            
43.         }
44.         if(good == true){
45.  
46.         }
47.     }
48.    
49.     IEnumerator Damage_Timer(){
50.         yield return new WaitForSeconds(2.0f);
51.  
52.     }
53.  
54. }
55.  

 

try changing line 21 to:

Code (CSharp):

1. other = soldier1.GetComponent<Soldier1_AI_Test>();

and just double check that soldier1 contains a Soldier1_AI_Test component.

 

Code (csharp):

1. if(test == true && hite ==false){

to

Code (csharp):

1. if(other && other.Is_Swinging && !hite){

But yes, it seems like there's no component of that type attached to that soldier1 GameObject, so it's returning null and you're not null-checking it.

 

Wel, the soldier contains a soldier1 ai, and i the game the code is doing what its suposed to do, but with errors

 

iam such a fool........

I cloned the soldier to test the combat and only deleted the soldier ai in that clone and forgot to delete the soldier swing test script..... the reason why i deleted the AI in the cloned soldier was because i changed the tag to Enemy so that the cloned soldier would be attacked and didn't attack himself... sorry for opening this thread because of such a dumb mistake hahah.