Trouble referencing variables inside of a script (C#)

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Hey, i have two scripts, one called targeting which has the public game object "attackingCity" in it. In the other script, i have a private variable of type targeting called "targetRef". I have set the attackingCity variable to cityE and when I Debug.Log it from the targeting script it confirms this. When i try and call this city from the other script using Debug.Log(targetRef.attackingCity); it throws a null reference exception at me.

Answer 1

Answer by Montraydavis · Nov 01, 2012 at 04:32 PM

You are not properly settings the refernce. Perhaps post your method here, but, it should look something like this

 var TargetReference : GameObject ;
 
 function Start ( )
 {
    TargetReference = GameObject.Find ( "ObjectName" ) ;
     //OR
    TargetReference = GetComponent ( ScriptComponentNameWithout.CS ) ;
 
 }

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JorgenFreeman · Nov 01, 2012 at 04:52 PM 0

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targetRef = GetComponent("targeting");

That's the line where I'm trying to set the target reference and right now it's saying that i can't convert a type component to a type targeting. When I add 'as targeting' to the end in order to cast it, my Debug.Log(targetRef) returns null. Whats going on? I'm in C# btw

Montraydavis · Nov 01, 2012 at 04:54 PM 0

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C# and JS don't really differe here, except declaring variables.

Just set the Type to the type that it is . . IE

If it's a GameObject

 GameObject TargetReference &#61; blaaa. ;
 ScriptName TargetReference &#61; blaaa. ;

JorgenFreeman · Nov 01, 2012 at 05:18 PM 0

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EDIT: I've resolved part of the issue: when i Debug.Log(targetRef) now it logs "scriptHolder (targeting)" (scriptHolder is the object containing the targeting script.) However, when i try to do targetRef.variableName, it throws up an error that 'UnityEngine.Component doesn't contain a definition for variableName'

Seth-Bergman · Nov 01, 2012 at 05:21 PM 0

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simply put, just get rid of the quotes:

targetRef = GetComponent(targeting); // no quotes

this returns a type of "targeting" rather than "Component", as you want

also, maybe declared wrong, try:

targeting targetRef = gameObject.GetComponent...// ...etc

JorgenFreeman · Nov 01, 2012 at 05:51 PM 0

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It just doesn't work. i had to make the variable of type component because there was a conversion error and typecasting wouldn't work. I need quotes because the GetComponent only takes a string. Check the edit on the previous comment.

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Trouble referencing variables inside of a script (C#)

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