Script array problem

Unity Engine
1

Hey everyone,

I have a script array and I would like to call a function from a script in the array.

currentScript = (MonoScript)AllScripts[0];

currentScript.OnMoving();

That last part doesn’t work, ofcourse, but how do I do this correct?

Thanks!

2

You need to cast it to the type of the script (filename) I believe. If you post the full code we might be able to help more.

3

This is all related code:

public MonoScript currentScript;

void OnEnable()
{
	Object[] AllTools = Resources.LoadAll("PlayerScripts/", typeof(MonoScript));
	currentScript = (MonoScript)AllScripts[0];
	Debug.Log("Enabled Script = " + currentScript.GetClass());
}

void Update() 
{		
	currentScript.ScriptUpdate();
}

Later on I want “currentScript” to be changed based on buttons the player clicks on.
The point is that I can add scripts to the PlayerScripts folder and it knows what to do
with it automatically.

4

The only problem is the cast itself. I need to cast the script file to the name of the script file, but that changes every time.

How can I accomplish this?

5

What you are trying to accomplish here is fairly complicated. Perhaps a different approach here may work better for you.

Why don’t you try to AddComponent all your target scripts on an empty game object? Then, instead of parsing a generic array to get a type specific element, you can GetComponent the script you want. GetComponent allows for a string overload and if your naming convention has an iterator, ie “Script001”, “Script002” etc, you can construct the script name as a string and pass it as an argument to GetComponent.

6

Why not just use an ArrayList? That way you can store the scripts without having to cast them when gaining access?

7

Thanks for responding so quick Diviner. I like your solution to my problem, but I still would really like to know how it’s done in the “fairly complicated” way. Just because I want to learn how that kind of stuff works and improve my c# knowledge :). If you could give me a push in the right direction, maybe a link or a small example?

8

No, you still have to cast with ArrayList. With List, you don’t.

–Eric

9

?

Unless I am not understanding what he is doing right or Unity is backwards ArrayLists do not care what type you put in them, Lists do.

List name = new List();
ArrayList name = new ArrayList();

10

Thanks all for responding. I tried to get it to work today based on several comments. Everything give me problems, probably because I have not explained the thing I’m trying to accomplish well enough.

After reading on other fora I found out that I’m trying to “invoke a method”, from another script usinging a variable
for the script itself.
Right now I’m trying this:

		Type thisType = this.GetType();
		MethodInfo theMethod = thisType.GetMethod("scriptUpdate");
		theMethod.Invoke(this, null);

I have “using System;” and “using System.Reflection;” at the top.

For some reason I get the error:
Object reference not set to an instance of an object.

I’m really new to all this scripting stuff. It would be nice if someone could explain why I get this error, and
how to solve the problem :).

11

hhmmm… now that I read something more on this, it might not be doing what I thought it was doing…