where errors

I'm from turkey and I can't speak english.I am do a 2.5d game but I Can't rotate a gun.This my script and error:

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3. public class silahhareket : MonoBehaviour {
4.     // Use this for initialization
5.     void Start () {
6.  
7.     }
8.  
9.     // Update is called once per frame
10.     void Update () {
11.         //rotation
12.         Vector3 mousePos = Input.mousePosition;
13.         mousePos.z = 5.42f;
14.      
15.         Vector3 objectPos = Camera.main.WorldToScreenPoint (transform.position);
16.         mousePos.x = mousePos.x - objectPos.x;
17.         mousePos.y = mousePos.y - objectPos.y;
18.      
19.         float angle = Mathf.Atan2(mousePos.y, mousePos.x) * Mathf.Rad2Deg;
20.         transform.rotation = Quaternion.Euler(new Vector3(0, 0, angle));
21.     }
22. }
23.  

error:
NullReferenceException: Object reference not set to an instance of an object
silahhareket.Update () (at Assets/silah ayarları/silahhareket.cs:17)

and I have a different scripts it's a fire scripts But not a cube fire because I can't find the cube fire gun(if you know a cube fire gun please write the scripts):

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class fire : MonoBehaviour {
5.  
6.     public float fireRate = 0;
7.     public float damage = 10;
8.     public LayerMask notToHit;
9.  
10.     float timeToFire = 0;
11.     Transform firePoint;
12.  
13.     // Use this for initialization
14.     void Awake () {
15.         firePoint = transform.FindChild ("FirePoint");
16.         if (firePoint == null) {
17.             Debug.LogWarning ("No firePoint? What?!");
18.         }
19.     }
20.     // Update is called once per frame
21.     void Update () {
22.         if (fireRate == 0) {
23.                         if (Input.GetButtonDown ("Fire1")) {
24.                             shoot();
25.                         }
26.                 } else {
27.             if (Input.GetButton ("Fire1") && Time.time > timeToFire) {
28.                 timeToFire = Time.time + 1/fireRate;
29.                 shoot();
30.             }
31.         }
32.     }
33.     void shoot () {
34.         Vector2 mousePosition = new Vector2 (Camera.main.ScreenToWorldPoint (Input.mousePosition).x, Camera.main.ScreenToWorldPoint(Input.mousePosition).y);
35.         Vector2 firePointPosition = new Vector2 (firePoint.position.x, firePoint.position.y);
36.         RaycastHit2D hit = Physics2D.Raycast (firePointPosition, mousePosition-firePointPosition, 100, notToHit);
37.         Debug.DrawLine (firePointPosition, (mousePosition-firePointPosition)*100, Color.cyan);
38.         if (hit.collider != null) {
39.             Debug.Log ("test");
40.             Debug.DrawRay (firePointPosition, hit.point, Color.red);
41.             }
42.         }
43. }

error:

NullReferenceException: Object reference not set to an instance of an object
fire.shoot () (at Assets/silah ayarları/fire.cs:35)
fire.Update () (at Assets/silah ayarları/fire.cs:25)

(Sorry I can some speak english)

 

Use the Insert Code button and check indentation, please

 

what is this?

 

When you edit a message, the button between the film icon and the floppy disk icon serve to paste code like this:

Code (CSharp):

1.  
2. if (Input.GetButton ("Fire1") && Time.time > timeToFire) {
3.     timeToFire = Time.time + 1/fireRate;
4.     shoot();
5. }

 

please help meee

 

The first script works with no error. The seconds works too but you have to add an empty gameObject called "FirePoint" as a child representing the weapon position.

 

scripts not work.
first scripts error:
NullReferenceException: Object reference not set to an instance of an object
silahhareket.Update () (at Assets/silah ayarları/silahhareket.cs:17)

second scripts error:
NullReferenceException: Object reference not set to an instance of an object
fire.shoot () (at Assets/silah ayarları/fire.cs:35)
fire.Update () (at Assets/silah ayarları/fire.cs:25)

 

For the first script you need at least one camera in the scene with tag "MainCamera".
For the second script:

1. From the menu: GameObject\Create Empty
2. rename the GameObject "FirePoint".
3. Drag the FirePoint on the object where the Fire.cs is attached.

If you still see in the log "No firePoint? What?!" then you did something wrong in the 3 points above.

 

Not Work again

 

Can you check what are the lines 17 and 35 please? Are exactly the same as in your first post?
This is 17? mousePos.y= mousePos.y- objectPos.y;
This is 35? Vector2 firePointPosition =newVector2(firePoint.position.x, firePoint.position.y);

 

The only thing that give me an error is if I change the MainCamera Tag to something else than "MainCamera". So double check in the inspector that all your Cameras have the correct tag.
Other than that I changed the first line of shoot() because ScreenToWorldPoint need a third parameter too (distance from camera). Otherwise return always the same value.

Code (CSharp):

1.     void shoot () {
2.         Vector3 mp = Input.mousePosition;
3.         mp.z = 10; // z = Distance from the camera
4.         Vector2 mousePosition = Camera.main.ScreenToWorldPoint (mp);
5.         Vector2 firePointPosition = new Vector2 (firePoint.position.x, firePoint.position.y);
6.         RaycastHit2D hit = Physics2D.Raycast (firePointPosition, mousePosition-firePointPosition, 100, notToHit);
7.         Debug.DrawLine (firePointPosition, (mousePosition-firePointPosition)*100, Color.cyan);
8.         if (hit.collider != null) {
9.             Debug.Log ("test");
10.             Debug.DrawRay (firePointPosition, hit.point, Color.red);
11.         }
12.     }
13.  

 

Not work this is the pictures:

 

You have no variable declarations for firePoint or notToHit. It looks like you're literally copy-pasting code from the forum into your script and expecting it to work, which it rarely does - as you've experienced. Try to debug it yourself.

 

I can't do this I don't know the code because I don't know the english I know the turkish and I can't find code description turkish

 

So you're going to rely on the folks in this forum to write the code for your game? I understand the frustrations of being an ESL programmer but come on now...

 

I gave you the part I have changed but of course you have to include it into what you already have...
And that was in the fire.cs!

 

I forget what. How do you texture?