Can you switch references of Gameobject for Scripts during runtime?

So this may be a very obvious question. I wanted to know if it was possible to switch references of Gameobjects for Scripts. For example, for my Bullet Script, I added the gameObject "bullet" to the Script, so that my Script can instantiate the bullet. But I want to switch this referenced gameobject from "bullet" to another GameObject called "laser" , so that my Script will instantiate the laser gameobject instead of the bullet gameobject. I know how to do it manually, but is there a way to switch it during gameplay. I am trying to change this reference when my player touches a power-up symbol. So I am using OnTriggerEnter2D function. I tried to use FindGameObjectwithTag("laser"), but I end up getting an error. Any help would be great.

 

Keep a reference to both in the inspector. Then just have the method which spawns the bullet have a parameter as the method declaration like:

Code (CSharp):

1. void SpawnProjectile (GameObject prefabGameobject)
2. {
3. // do stuff
4. GameObject newProjectile = GameObject.Instantiate (prefabGameobject);
5. newProjectile.GetComponent <SomeScript>().DoSomething ();
6. }

then when you go to spawn one or the other, hand it the prefab you need to spawn like this:

Code (CSharp):

1. SpawnProjectile(LaserPrefab);

or:

Code (CSharp):

1. SpawnProjectile(BulletPrefab);

Good luck!

 

I am using Invoke Repeating to call SpawnProjectile(), so that means I cannot take in an argument. Is there another way to get around this.

 

Don't use InvokeRepeating or Invoke, they're bad.

Replace them with coroutines that allow you to use the methods like real methods, instead of landing you in reflection nightmares.

Or, if you really insist, have the method you're invoking select the gameobject to spawn from a field:

Code (CSharp):

1. public GameObject bulletPrefab;
2. public GameObject laserPrefab;
3. private GameObject usedProjectile;
4.  
5. void Start() {
6.     usedProjectile = bulletPrefab;
7.     InvokeRepeating("Fire", 0, 2f);
8. }
9.  
10. void Fire() {
11.     Instantiate(usedProjectile);
12.     //move the projectile somehow
13. }
14.  
15. void SwitchToLasers() {
16.     usedProjectile = laserPrefab;
17. }