Bullets and force - Error in Rigidbody2D

Having problem getting my bullets to fly .
Game creates bullets correctly but the force is not applied

bullet.rigidbody2D.AddForce(new Vector2(0,1) * bulletSpeed);

NullReferenceException: Object reference not set to an instance of an object
DUDEMOVEGODDAMMIT.Update () (at Assets/Scripts/DUDEMOVEGODDAMMIT.cs:52)

There seems to be problem with my Rigidbody2D bullet??

 

I might be misunderstanding but from the exception it would seem that the problem is not about the force, but rather that either the "bullet" or "rigidbody2D" is null? (Assuming what you linked was line 52).

Also is is kinematic needs to be unchecked: http://docs.unity3d.com/Manual/class-Rigidbody2D.html

 

If you are using Unity5, you need to write the code in this form:

bullet.GetComponent<Rigidbody2D>().AddForce(new Vector2(0 ,1) *bulletSpeed);

Make sure you have a rigidbody2D attached to the gameObject too.
Regards

 

Here is the code:

public GameObject bullets;
void SpawnBullets () {
Rigidbody2D bullet = Instantiate (bullets, new Vector3 (transform.position.x, transform.position.y, 0.0f), transform.rotation) as Rigidbody2D;
bullet.rigidbody2D.AddForce(new Vector2(0,1) * 0.001f);

The problem is probably in my C# cause I have never writen it before . I have tried both of the creating and adding force separately and they work...

 

You Instantiate "bullets" but try and move "bullet"

 

Although correct, I would ask that GetComponent go into a temporary reference variable first, which is then checked for null before proceeding. I code mostly defensively and it costs no extra performance to do so, and will probably save on tears later.