Reference an Instance of an Object?C#

Questions & Answers
1

Hi there! I’ve got a question about a specific problem related to a topic which seems to be hard to understand.

That topic is .GetComponent<>();
The question may sound silly but before I got overwhelmed by errors I thought I learned this lesson well… but now I don’t know what to think anymore!

And the question is:

What do I have to do to access/reference/manipulate an instantiated prefab/GameObject/thing?

Now something more specific ( i’m keeping this generic enough so that any answer may easily be understood by others in my same needs):

I’ve got scriptA attached to objectA, scriptB attached to objectB and scriptC attached to objectA. scriptA has a public “slot” in the editor in which i put objectB. This is a simple way to reference another GameObject.

Then I put my objectA with its two scripts inside the Hierarchy, so that it exists.

When I execute in scriptA an Instantiate(objectB) I’m making a Clone of that GameObject, am I right? But what if my scriptC tried to access a variable of scriptB?

I’ve set up the references “properly”, and by properly I mean that I followed the .GetComponent<>(); method. Obviously I get a null reference exception in this case.

I know that exception is right, it does make sense: the hierarchy contains no objectB so there’s not a scriptB either. But the Hierarchy do contains an objectB(Clone), which has a scriptB.

So what would I have to do to “talk” to that Clone with my scriptC?

I also tried the static workaround, even if it’s not smart when you have multiple clones on screen. It didn’t worked.

The only thing I managed to do to solve this issue is to put objectB inside the Hierarchy too, thus disabling the Instantiate execution inside scriptA of objectA. This way I just have to make a regular Find & GetComponent with scriptC to access stuff in scriptB. But this is not what I wanted in the first place.

My apologies, I know this argument has been already explained in tons of examples, but I just couldn’t get it.
Needless to say that a link or some lines of code would be very appreciated.
Thanks in advance for your kindness.

P.S.: I can provide you my own code if you think that might improve your answers, but it’s just a coded version of what I stated above.

2

As you said,

Script C and Script A is in same game object, While you instantiate object b clone get the reference of the instantiated game object in Script A.

GameObject g= Instantiate(prefab, new Vector3(i * 2.0F, 0, 0), Quaternion.identity) as GameObject;

Now if you want to get the access of the instantiate game object in script C. You can get the reference of the script A in script C using getcomponent. With that reference you can access the instantiated object.