My raycast does not work as espected

Questions & Answers
1

I’m doing a 2D game, and i’m tryng to use raycast as a criteria for jump. but my raycast is returning the gameobject who called the raycast.

My code is like that

if (Input.GetKeyDown(KeyCode.Space)) 
{
	RaycastHit2D hit = Physics2D.Raycast(transform.position,-Vector2.up,10f);
    if (hit.collider != null ) 
    {
		rigidbody2D.AddForce(Vector3.up * 200);
	}
}

if i put a print(hiy.collider.name); it returns the name of the gameobject who is casting it.

2

Try doing this

RaycastHit2D[] hits = Physics2D.RaycastAll(...);

foreach(RaycastHit2D hit in hits)
{
   if(hit.collider.name != "me")
      ...
}

(replace “me” with your gameobject’s name)

It won’t be as performant, but at least enables you to dismiss the gameobjects own collider.

There is also the Physics2D.IgnoreCollision() call - take a look in the docs for how that works. It might be more difficuly with firing a ray - it might be specifically for two different colliders, I’m not sure.

Ian.

3

Hi,

Try to check that whether the rigid body you are trying to find with ray cast is already a child of another rigid body or not?
If yes then It will return the parent rigidbody gameObject.