Prefab Instantiate is null. Spawning Prefabs?

Asset & Content Management
1

I have this issue where my gun shoots using raycast and the particles that appear is basically just a simple detonator (cloud of smoke), the detonator (cloud of smoke) will destroy itself once it hits a collider (to prevent it to hit again anywhere else), but if it destroys itself, then it cannot be used again!

So my issue is I can shoot my weapon once, and it will work perfectly fine, and show the particles/cloud of smoke, however if i shoot it again, it wont show the particles/cloud of smoke because its been destroyed.

I get this error which I understand: NullReferenceException: The prefab you want to instantiate is null.

I know it means that the script cannot access the prefab because its destroyed, my question is how do I spawn another one after its destroyed?

This is the script for the actual detonator

// The reference to the explosion prefab
var explosion : GameObject;

function OnCollisionEnter (collision : Collision) { 

   // Instantiate explosion at the impact point and rotate the explosion 
   // so that the y-axis faces along the surface normal 
   var contact : ContactPoint = collision.contacts[0]; 
   var rotation = Quaternion.FromToRotation(Vector3.up, contact.normal); 
    Instantiate (explosion, contact.point, rotation); 
   //variable for your particle prefab that you created and saved as a prefab. 
//drag that particle prefab here in the inspector 

// And kill our selves 
  Kill ();    
}

function Kill () {
	// Stop emitting particles in any children
	var emitter : ParticleEmitter= GetComponentInChildren(ParticleEmitter);
	if (emitter)
	emitter.emit = false;

	// Detach children - We do this to detach the trail rendererer which should be set up to auto destruct
	transform.DetachChildren();
		
	// Destroy the projectile
	Destroy(gameObject);
}

Thanks in advance.

2

you must assign instantiate to a temp variable and use that to do the rest of your work - instantiate copies w/e the 1st field you give it and returns that copy

3

Yeah i used this line Instantiate(hitParticles);
in the Fire function, and thats when I started getting the error, am I using instantiate correctly? I took a look at the rocket launcher script too, and it used instantiate too, but im not sure why it doesnt work with my gun script.

4

Anyone know what im doing wrong?

5
6

Yeah I read that documentation, but the problem is my gun does not use a projectile it uses raycasting (like the machine gun in the fps tutorial).

So clone = Instantiate(projectile, transform.position, transform.rotation); doesnt seem to really work because it uses position, rotation, and transform, but all im using is raycast, so how do I implement instantiate using raycasts?

7
8

Yeah I have all that stuff implemented into my script, but for some reason the Hitparticles doesnt appear…

The only reason I decided to use raycast instead of projectiles is because when i shoot my gun, some times it shoots right thru a wall, sometimes it doesnt, If anyone knows a fix for that, then my problem would be solved.