Resolved collision stay

hi to all!!
for programming needs I can not change the layer of this object ... it is a stone that the player can destroy, some enemies change direction if they collide and others that should pass through .... Now.. how do i allow an enemy to pass through???

whit this not is possible

Code (CSharp):

1.  Physics2D.IgnoreLayerCollision(12, 12);

because the object is on the ground so if i change layer the object will fall through the floor the code i showed "12,12" it's the enemies layer because they have to cross each other

so i was thinking of using this code

Code (CSharp):

1. private void OnCollisionStay2D(Collision2D stay)
2.     {
3.         if (stay.gameObject.name == "Smallrock")
4.         {
5.            
6.         }
7.     }

but I noted with disappointment that I don't have an "ignore collision with this object" or similar command Could you please help me how can i do this??? thank you in advance

 

Why can't you have 1 layer for the default and 1 layer where everything can pass through?
Then you only need to switch the layer without touching physics in code

 

because if I change its level when the player walks over it it won't detect it... and it will stay with the jump animation... the object is now on the ground

 

i solved...
just create another check for layer in player movement