NullReferenceExeption

I get the error "NullReferenceExeption" in line 17 in this code, but i cant find it! Help?

using UnityEngine;
using System.Collections;

Code (csharp):

1. public class shoot : MonoBehaviour {
2.     public GameObject bullet_prefab;
3.     public float bulletImpulse = 100f;
4.     // Use this for initialization
5.     void Start () {
6.  
7.     }
8.  
9.     // Update is called once per frame
10.     void Update () {
11.  
12.         if (Input.GetButtonDown ("Fire1")) {
13.             Camera cam = Camera.current;
14.             GameObject thebullet = (GameObject)Instantiate (bullet_prefab, cam.transform.position + cam.transform.forward, cam.transform.rotation);
15.             thebullet.GetComponent<Rigidbody>().AddForce(cam.transform.forward * bulletImpulse, ForceMode.Impulse);
16.         }
17.     }
18. }

edit: sorry for no code tags...

 

[code ][/code ] tags please.

Also, use Camera.main and not Camera.current. Do you actually have a prefab assigned to the bullet_prefab in the inspector? And does the GameObject in the prefab actually have a Rigidbody assigned to it?

 

can you edit it as code
[code ]

[/code ]

 

Code (csharp):

1. public GameObject bullet_prefab;

Code (csharp):

1. thebullet.GetComponent<Rigidbody>()

Are meant to be the same prefab?

And please use code tags as asked next time.

 

Camera.current is needed, because its part of a multiplayer game, and i would be shooting multiple projectiles otherwise, and yes I have essigned a prefab...

 

no, they are not

 

so in which line is your null reference exception now, looking at your code line 17 is empty

 

Code (csharp):

1. public class shoot : MonoBehaviour
2. {
3.    public GameObject bullet_prefab;
4.    public float bulletImpulse = 100f;
5.  
6.    void Update ()
7.    {
8.        if(Input.GetButtonDown ("Fire1"))
9.        {
10.            if(bullet_prefab == null)
11.               Debug.Log("null prefab");
12.  
13.            Camera cam = Camera.current;
14.  
15.            if(cam == null)
16.               Debug.Log("null camera");
17.            
18.            GameObject theBullet = GameObject.Instantiate(bullet_prefab, cam.transform.position + cam.transform.forward, cam.transform.rotation);
19.  
20.             if(theBullet == null)
21.                Debug.Log("null bullet");
22.  
23.             Rigidbody bulletRigidbody = theBullet.GetComponent<Rigidbody>();
24.  
25.             if(bulletRigidbody == null)
26.                Debug.Log("null rigidbody");
27.  
28.             bulletRigidbody.AddForce(cam.transform.forward * bulletImpulse, ForceMode.Impulse);
29.        }
30.    }
31. }

Welcome to the world of debugging.

 

Ahh... I'll just say, a null reference exception basically means that you're trying to push a button on a device that doesn't exist. Make sure when you tell a computer to press a button that the button exists, or they get very angry.