1

I know, I know… This has been asked all over the place, but I personal don’t get it. Could someone help me out. I am trying to use my Ammo_Size float from my first script and use it in my gun script so I can compare the Ammo_Size number in the gun script.

Gun Script:

void Start()

{
        Ammo_Clip ammo_clip = GetComponent<Ammo_Clip>();
    }

    public void Update()
    {
        if (ammo_clip.Clip_Size > 0)
        {
            Gun_Controll();
        }
    }

Ammo_Clip Script:

public float Ammo_Size;
public float Clip_Size;

public Text Ammo_Clip_Display;

private void Start ()
{
    Ammo_Size = 36;
    Clip_Size = 12;
    Display_Ammo_Clip();
}
2

Please don’t post a comment/follow-up as an Answer - use the “Add comments” button or the “reply” link instead; I fixed this for you.

You need to fix 4 to be something like

Ammo_Clip ammo_clip = GameObject.Find("myThing").GetComponent<Ammo_Clip>();
3

Hi @Nova_Tech,

This is your error

if (ammo_clip.Clip_Size > 0)

The reason you are getting an error is that ammo_clip is null. The reason it is null is because you have not attached a Ammo_Clip to the game object that the Gun Script component is attached to.

To fix this first make sure that ammo_clip is posted as a global like so

private Ammo_Clip ammo_clip;

Now in the Start() function set the ammo_clip reference like so

void Start()
{
    ammo_clip = GetComponent<Ammo_Clip>();
}

Now when you go to you the ammo_clip do the following to ensure that you do not get an error

 public void Update()
 {
     // make sure that ammo_clip is valid before trying to use it
     if  ((ammo_clip != null) && ammo_clip.Clip_Size > 0))
     {
         Gun_Controll();
     }
 }