Null reference when calling a method from another script

Question

So I have a script EnemySpawner. Im trying to call a function there everytime an enemy is destroyed, which happens in my projectile script. I keep getting this:

NullReferenceException: Object reference not set to an instance of an object Projectile.OnTriggerEnter (UnityEngine.Collider otherObject) (at Assets/Scripts/Projectile.cs:57)

Heres what Im basically doing in my projectile script:

 public EnemySpawner enemyspawner;
 
 void OnTriggerEnter(Collider otherObject)
 {
         //do stuff
         Destroy(otherobject.GameObject);

     //call function
     enemyspawner.test();


      //i have also tried this
     //enemyspawner.GetComponent<EnemySpawner>().test();

     //and
      //EnemySpawner enen= new EnemySpawner();
     //enen.test();
 }

heres what im doing in my enemyspawner script

 public class EnemySpawner : MonoBehaviour {
 public void test()
 {
     Debug.Log ("CALLED");
 }
 
 }

What am I missing here???

Answer 1

Answer by zharik86 · Jun 12, 2014 at 05:58 AM

Look at the Destroy function. Change it on:

  public EnemySpawner enemyspawner;

  void OnTriggerEnter(Collider otherObject) {
   //do stuff
   Destroy(otherObject.gameObject); //You write otherobject.GameObject, change it
   //Further for function invocation from other script we shall find at first it through GetComponent or using public variable
   enemyspawner.test();
  }

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Null reference when calling a method from another script

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