Null reference when calling a method from another script

Questions & Answers
1

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???

2

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();
 }