Question Referencing another gameObject collision in a different gameObject script?

The title is a little confusing but basically I have a script on my bullet object that has a OnTriggerEnter2D function that I want to check to see if it happens on the script for my weapon, but I can't figure it out.

The reason I want to do this is because when the bullet collides with a valid object it creates a teleport object (something that I haven't even started thinking about the code for), but I don't want to have multiple of these objects in the game at once, which is currently what's happening. I want a teleport object to be created if there isn't one already, and if there is, I want the newest one to stay and the oldest one to be destroyed. The problem is that I can't figure out how to track out many of these teleports I have in the game, and I think this is because I've been doing all of the code on the bullet script, which only gets played once when a bullet is fired and then is reset for the next bullet. So, I started trying to add this on my weapon script so that the bullet count is continuous, but I can't figure out how to detect collision with the bullet and be able to reference it in my weapon script.

Sorry that was a lot of info, I'm terrible at explaining things. Lmk if more clarification is needed, and thank you!

 

Make a reference to your weapon script in the bullet script and then modify a variable in it when the bullet collides with the correct collider.

Code (CSharp):

1.  public class BulletScript : MonoBehaviour {
2.  
3.     public WeaponScript weaponScript;
4.  
5.     void OnTriggerEnter (Collider collider) {
6.  
7.         if (collider.CompareTag ("Correct Collider")) {
8.             weaponScript.teleportCount = 1;
9.         }
10.  
11.     }
12.  
13. }
14.  
15. public class WeaponScript : MonoBehaviour {
16.  
17.     [HideInInspector] public int teleportCount = 0;
18.  
19.     void FireWeapon () {
20.  
21.         if (teleportCount == 0) {
22.             //Fire a teleport bullet
23.         }
24.  
25.     }
26.  
27. }