Question Physics.Raycast LayerMask

Hi guys, I have a problem with raycast. I have buttons on the screen of my game, even though I use raycast, the ray goes to them.

Code (CSharp):

1. void HitFire()
2.     {
3.         Ray _ray = Camera.main.ScreenPointToRay(Input.mousePosition);
4.         int layerMask = 1 << 5;
5.         layerMask = ~layerMask;
6.         //LayerMask layerMask = ~LayerMask.GetMask("UI");
7.         if (Physics.Raycast(_ray, out RaycastHit hit,100f,layerMask))
8.         {
9.             if (hit.collider.gameObject.CompareTag("spider"))
10.             {        
11.                 Instantiate(BloodHitEffect, hit.point, Quaternion.identity);
12.             }
13.         }
14.     }

Layers


EDIT: I checked this function with

Code (CSharp):

1. if(EventSystem.current.currentSelectedGameObject == null)

and problem solved. I've also given a button component to my UI elements in my game scene.

NOT:

Code (CSharp):

1. if(EventSystem.current.currentSelectedGameObject == null)

Instead of checking

Code (CSharp):

1. if(!EventSystem.current.IsPointerOverGameObject())

you can also check

 

Maybe make a LayerMask variable and set it in editor so you can visualize it's variable?

 

@DevDunk i tried but it didn't work

 

What is the collider?