Question OverlapCircleAll Optimization

I'm working on a game where you control minions to go and fight enemies and this targeting system, I made was supposed to allow the targeting of multiple enemies (at least I hope so anyway)
it has some issues 2 big ones, but the one I wanted to discuss is OverlapCircleAll as I've heard that it makes new arrays and discards them later.
leading to garbage collecting and lower performance overtime especially if you are trying to have multiple targets.

is there any way I can improve this?
I've heard of NonAlloc but I don't really know how to apply it to my code without breaking it (more than it already is)

Code (CSharp):

1. private void FOV()
2.     {
3.        
4.          rangeCheck = Physics2D.OverlapCircleAll(transform.position, radius, targetLayer);
5.         if (rangeCheck.Length > 0)
6.         {
7.             Transform target = rangeCheck[0].transform;
8.             Vector2 directionToTarget = (target.position - transform.position).normalized;
9.  
10.             float distanceToTarget = Vector2.Distance(transform.position, target.position);
11.             //used in another script to determine movement
12.             targetT = rangeCheck[0].transform;
13.  
14.             if (!Physics2D.Raycast(transform.position, directionToTarget, distanceToTarget, obstructionLayer))
15.             {
16.                 CanSeeTarget = true;
17.             }
18.             else
19.                 CanSeeTarget = false;
20.         }
21.         else if (CanSeeTarget)
22.             CanSeeTarget = false;
23.     }

 

This is performance speculation. Do you presently have a performance issue? Did you profile to confirm that you have a performance issue? Y/N?

If N, don't worry about it and move on with your project.

And the only difference in usable with the NonAlloc versions of methods is you provide an already allocated collection for it to fill (passed in via reference), rather than getting a new collection as a return value.

 

pardon me for the wait

if im not mistaken i just have to provide a list or an array to overlapcircle as a result instead of using NonAlloc

the reason for that is to allow some enemies/minions to be able to attack multiple individuals at once
which kinda makes setting the target as the first one in the [Field of View] script kind of pointless but that is just for testing purposes

I also have a question regarding what i should do if the target is lost/leaves the FOV of the pursuer as everytime the target does leave the radius it throws out an error and breaks the script

 

cool cool ill try and use it now

yeah thats the gist if it

Edit: my rangecheck variable is a collider2D[] and adding a result makes it an integer right
so i wouldn't be able to check the length of it
unless there is something I'm not getting

Code (CSharp):

1. public Collider2D[] rangeCheck;
2.     private Collider2D[] result;
3.  
4.  
5. rangeCheck = Physics2D.OverlapCircle(transform.position, radius, result, targetLayer);
6.         if (rangeCheck.Length > 0)
7.         {
8.             Transform target = rangeCheck[0].transform;
9.             Vector2 directionToTarget = (target.position - transform.position).normalized;

 

just curious does this only work on one target or multiple

 

alright will do