Collder2D with 2 parametars?

Okay so I get this in the log:
Script error: OnCollisionEnter2D
The message must have 0 or 1 parameters.
The message will be ignored.

Can I make the OnCollisionEnter2D with 2 parametars?

Code (CSharp):

1.  
2. private bool playerSwitchedSide;
3.  
4.     void OnCollisionEnter2D (Collider2D rightWall, Collider2D leftWall)
5.     {
6.         if (rightWall.gameObject.tag == "Right wall")
7.         {
8.             playerSwitchedSide = true;
9.         }
10.         else if (leftWall.gameObject.tag == "Left wall")
11.         {
12.             playerSwitchedSide = false;
13.         }
14.  

 

No, OnCollisionEnter2D can only take 0 or 1 parameters and it must be a Collision2D, not a Collider2D. If the object collides with multiple objects, Unity will call upon OnCollisionEnter2D several times. Each time there will be information about the "current" collision found in the Collision2D parameter.

 

The parameter [Collider2D] is the collider component of the gameObject you hit.
You should check if that single parameter is right or left wall:

Code (csharp):

1. private bool playerSwitchedSide;
2.  
3.     void OnCollisionEnter2D (Collision2D coll)
4.     {
5.         if (coll.gameObject.tag == "Right wall" ||  coll.gameObject.tag == "Left wall")
6.         {
7.             playerSwitchedSide = true;
8.         }

 

I think this is a bit off about your question, but if I understand you want to check what side you are colliding. You can use this :

Code (CSharp):

1.  void OnCollisionEnter2D(Collision2D  collision)
2.      {
3.          Collider2D collider = collision.collider;
4.  
5.          if(collider.name == "Wall")
6.          {
7.              Vector3 contactPoint = collision.contacts[0].point;
8.              Vector3 center = collider.bounds.center;
9.              bool right = contactPoint.x > center.x;
10.              bool top = contactPoint.y > center.y;
11.          }
12.      }

 

Thank you to all of you who replied.. I found other way.. I attached two different scripts to the both walls and called the functions from other script.. Thank you again..