Access Script on Object

Unity Engine
1

I know this is one of those questions that pops up a lot. I read through the forums a bit before posting but I couldn’t find an answer.

I’m trying to access a variable in another script on an instantiated object.

Script A has this Component

var MySpeed = GetComponent("Personal Stats").SpeedStat;

Script B (Personal Stats) is being accessed and is on the same object. However, I keep getting the error that it’s not accessing an instance of the object.

Script A and B are both instantiated scripts. Meaning, there are multiple objects running these same scripts but in different ways. I need Script A to access the Script B on the same exact object, rather than one of the object scripted objects.

How can I accomplish this? Also, I can’t use the “FindWithTag” option.

Hope I explained that well enough.

One last thing, this is sort of a miscellaneous question, but what is the difference between a gameObject and a GameObject?

2

Is the script named “Personal Stats” with the space? I didn’t know you could do that. Maybe try renaming it to one without the space (e.g., “PersonalStats.js”)?

3

I have, in the past, tried to do this, and FizixMan is right, you cant have spaces in the names of your scripts, just like your variables and functions.

4

Yeah, that did it. Thanks for the help.

As a side note, that is crazy insanely stupid :stuck_out_tongue:

Also, if anyone can answer my other question about gameObject vs GameObject, I’d appreciate it

5

Also, not to hijack my own thread, but I don’t see the point in opening a new one as this one is on the same topic.

Is it possible for me to use Script A to call a function that changes a variable in Script B?

I know it’s possible for Script B to Check Script A and make adjustments to itself, but how about the other way around?

6

Yes

7

How?

8

Only variables and functions that are Public are accessible. (C# syntax, check UnityScript for its version)

from ScriptA

ScriptB myScriptB = GetComponent<ScriptB>();

myscriptB.somePublicVariable = 10;
myscriptB.someFunction();

from ScriptB

ScriptA myScriptA = GetComponent<ScriptA>();

myScriptA.somePublicVariable = 10;
myScriptA.someFunction();
9

There are a few things which are insanely crazy stupid. :slight_smile:

To answer your question, GameObject is a script which represents any physical object in your scene. Unity - Scripting API: GameObject It’s a “type” (just how int, string, Vector3, Transform, MeshRenderer are types)

gameObject on the other hand is a property of any Transform instance which provides you a reference to an instance of that GameObject type/script. Unity - Scripting API: Component.gameObject

So if you only have a reference to the “transform” of an object (which is what you get sometimes for some physics stuff) you can still crawl back to the encompassing GameObject instance for that physical object in your scene.

EDIT: oh yeah, for JavaScript, the generics code is:
var myScriptA = GetComponent.();

This is the preferred way of using the GetComponent method. It forces type-safety and will catch errors when you compile (rather than when you try to run the game).

10

I think I explained it poorly.

What I want to do is use Script A to modify Script B. What you’ve shown me is how to use Script B to check Script A, then modify itself.

Also, thanks Fizix, that answered my question about gameObject vs GameObject.

11

It’s all the same Steveosaurous. Once you know how scripts can access/change each other then you can apply it however you want:

//this code would reside on ScriptB
var scriptA : ScriptA = target.GetComponent.();
if (scriptA.SomeProperty > 0)
{
scriptA.SomeProperty = 0;
}