Is it possible to use scripts without MonoBehaviour on GameObjects?

Questions & Answers
1

I’m researching random level generation in Unity for a school project and I decided to use a tutorial from a youtuber named Six Dot Studios. In the (Procedural Generation in Unity (Tutorial) - YouTube) description he linked his project, and I decided to check it out, but it doesn’t work.

His “Room” script doesn’t derive from MonoBehaviour and adding MonoBehaviour doesn’t seem to make it work either, returning this error:

“You are trying to create a MonoBehaviour using the ‘new’ keyword. This is not allowed. MonoBehaviours can only be added using AddComponent(). Alternatively, your script can inherit from ScriptableObject or no base class at all UnityEngine.MonoBehaviour:.ctor() Room:.ctor(Vector2, Int32) (at Assets/Generation scripts/Room.cs:10) LevelGeneration:CreateRooms() (at Assets/Generation scripts/LevelGeneration.cs:56) LevelGeneration:Start() (at Assets/Generation scripts/LevelGeneration.cs:23)”

I can add more info if needed and the scripts can all be downloaded in the video desc, but my question is as follows

TL;DR: Is it possible to create a secondary, non-MonoBehaviour C# script and then add it to a GameObject through a Primay C# one?

2

first, why do you need to derive from monobehaviour? MonoBehaviour scripts are special scripts that are attached to GameObjects, those scripts can not be created like non-moonobehaviours scripts with the new key, if you want to “add his original non-MonoBehaviour Room script in the level generation script” you need to find the reference to the object that has that script. you can drag and drop from the inspector the reference or find it in runtime using Unity - Scripting API: Resources.FindObjectsOfTypeAll for example or any other way like gameobject.find.