raycast not hitting anything?

Questions & Answers
1

So I am trying to make a 2d platformer and I want my enemy AI to jump when there is a wall in front of it. I am trying to use raycasts but they are not working. I have a box collider 2d for the wall. Here is my code:

    RaycastHit2D hit = Physics2D.Raycast(transform.position, Vector2.right, 10, 
   LayerMask.NameToLayer("Wall"));

        if (hit)
        {
            Debug.Log("wall detected");
        }

yet I am not getting any messages in the console. could somebody help me?

2

As is, you are not casting with the “Wall” LayerMask. You have to do a bit shift in order to make it a layermask.

So right now, LayerMask.NameToLayer (“Wall”) just returns the int layer that Wall is on.

You should do the following instead:

RaycastHit2D hit = Physics2D.Raycast(transform.position, Vector2.right, 10, 1 << LayerMask.NameToLayer("Wall"));
 
         if (hit)         
             Debug.Log("wall detected");

1<< is the bit shift that turns the “Wall” layer into a layermask.