2D raycasting top down game in unity3D

Question

Im am making a pokemon like game where you walk around. This is a top down 2d game. However im trying to detect a certain tile in front of me.

My character is at Y 1 and the map at Y 0. I have tryed to forward raycast but it didn't really work.

here is what I tried:

if (Input.GetKey("w") && isMoving == false)
        {
            bool disableMove = false;
            RaycastHit hit;
            if (Physics.Raycast(transform.position, Vector3.forward, out hit, 2))
            {
                var distanceToGround = hit.distance;
                Debug.Log("HIT");

                if (hit.collider.gameObject.tag == "collision")
                {
                    disableMove = true;
                    Debug.Log("Tree");
                }
            }
            if (!disableMove)
            {
                Calculatewalk();
                anim.Play("WalkingUp");
                increment = 0;
                isMoving = true;
                startPoint = transform.position;
                endPoint = new Vector3(transform.position.x, transform.position.y, transform.position.z + 1);
            }
            disableMove = false;
        }

Answer 1

If the colliders are 2D colliders, use Physics2D.Raycast

If you don't use the new Unity 2D system, we can't help you much. Perhaps you arent in the right Z layer. Also Vector3.forward seems not very good. Try to use transform.forward.

I hope I helped you!

Answer 2

xD why do you have a javascript variable when you are writing in c#:

var distanceToGround = hit.distance;

line 7