Add Custom Script Input to Game Object through Script (Custom Editor)

Unity Engine
,
1

Hi, so I’ve been making a custom editor in Unity and was wondering if there was a way to add a script that’s inputted by the user to a new game object.

using UnityEngine;
using UnityEditor;

public class Namespace : EditorWindow
{
    GameObject obj;
    MonoScript objScript;

    void OnGUI()
    {
        obj = GameObject.CreatePrimitive(PrimitiveType.Cube);
        obj.AddComponent<objScript>();
    }
}

This isn’t my exact code but it’s the part that’s relevant. I’ve tried different things for line 12 but there’s always some error.

2

OnGUI is executed every single frame, actually more than once per frame.

That means every second you’re making between 60 and 180 cube primitives, so I doubt that will be useful.

Now what exactly are you trying to do, make a button that adds a Component to the selected GameObject? Make a new cube? It’s unclear what your intent is from the above code.

3

I already have a button to spawn in the cube, but I need it to add the script from the variable objScript to the object. However, line 12 does not work because it’s not a component type, it’s a MonoScript variable, so I’m wondering how to add a custom script/component to a GameObject.

I hope this clarifies.

4

Never heard of a MonoScript until today. Looking at the docs,

Tells me it is derived from a TextAsset. That means it is intended to map to something on disk, generally speaking.

My spidey sense tells me that if you follow the rules for producing a TextAsset in code (google it up, I certainly don’t remember such things), and instead produce a MonoScript object, it might just get you where you need.

5

I’m unsure what you mean by that? I also have another piece of code that uses MonoScript but I’m not sure it’s related.

EditorGUILayout.BeginHorizontal();
objExtraScript = EditorGUILayout.Toggle(tab + "Add Custom Script", objExtraScript);
if (objExtraScript) { objExtraComponenet = EditorGUILayout.ObjectField(objExtraComponenet, typeof(MonoScript), false) as MonoScript; }
EditorGUILayout.EndHorizontal();

The problem I’m having is that I need to add a script from a variable to a game object but in the AddComponent function, it only allows you to input the premade components. Maybe it should be MonoBehaviour instead of MonoScript? I don’t know. Thanks for your help btw.

6

The problem you’re having is more analogous to trying to add a TextAsset to a GameObject.

It can’t be done.

You can create a TextAsset on disk.

You CANNOT add a TextAsset to a GameObject.

You can drag a TextAsset into a public TextAsset field in a Monobehavior.

Based entirely on observing the documentation I quoted above, I speculate that the same goes for a MonoScript.

7

Okay, that’s kinda weird. Maybe they should add that in an update. It wasn’t really that important but thanks a lot for your help I really appreciate it!