Variable in other script is null all the time

http://pastebin.com/erQv9HAW http://pastebin.com/S9bu7iHU


Why is wizard variable null? it gives me an error all the time that its not set to an instance of an object

 

What lie does the error say?

 

line 198 wizard.IncreaseStats(6, 6, 6); // doesnt get called

and it should call this method

Code (CSharp):

1. public void IncreaseStats(int id,int buff_amount,int buff_duration)
2.     {
3.         print("attackdamage" + attackDamage);
4.         attackDamage+= buff_amount;
5.         currentPlayerHealth += buff_amount;
6.         //STAT ID, BUFF amount, BUFF DURATION
7.         print("attackdamage after increase" + attackDamage);
8.     }

 

What line does the error tell you the problem is on?

 

i just answered , scroll up

 

Does your gameobject have a Wizard script attached to it? Line 21( wizard = GetComponent<Wizard>(); ) might be making it null.

 

yes , in the inspector i dragged in script which is on the wizard

 

What do you mean you dragged in the script? Does your gameobject have both the Wizard script and the Inventory script on it? (And not just dragged into the variable slot, but actually have the script on the object itself)

 

By "on the wizard", do mean the little inspector box created for the wizard variable? If that's what you mean that won't work. You need to have the component on the object for GetComponent method to find it.

 

i mean that

 

That is why it's null. GetComponent looks at the same gameobject as the inventory script is on and says, find me a Wizard script. In this case, you have no wizard script so it sets the value to null. You either need to have the inventory script on an object that has the WIzard script or you need to comment out the line that @Endalth referenced

EDIT: GetComponent without a target does this. if you had say targetPlayer.GetComponent, that would look at the targetPlayer gameObject to look for the script.

 

so i need gameobject reference?

 

If you have

Code (CSharp):

1. public GameObject playerWizard;
2. private Wizard wizard;
3.  
4. void Start()
5. {
6.    wizard = playerWizard.GetComponent<Wizard>();
7. }

Then that can work also. That's assuming you drag and drop your gameObject with your Wizard script into the playerWizard slot. (Or find it some way with like GameObject.Find. or something.)

 

Thanks a lot ! everything works perfect now