Question by BacaV9 · Feb 13, 2020 at 09:01 PM · gameobject prefab fbx saving npc

How to create prefab from a GameObject variable in class?

I'm working on a NPC - System for my game and got this problem. I have a NPC class which contains some information about npc and PREFAB from .fbx model in it.

 public class NPC
     {
         public int ID;
         public string Name;
         public string Description;
 
          //Model mixiamo as prefab
         public GameObject ItemPrefab;
      
         public NPCFraction npcFraction;
 }

Then I create some GUI to specify that data and assign some values. To the ItemPrefab I assign the prefab created from .fbx model. Later when I finish assigning data I want to create a new prefab from this class to allow my designers easy drag and drop. To do that I've created a script:

 public class SaveObject : EditorWindow
 {
     public static void SaveAsPrefab(GameObject item, string path)
     {
         Object prefab = PrefabUtility.SaveAsPrefabAsset(item, path);
     }
 }

And now I try to save ItemPrefab (prevous original prefab from .fbx) as a new prefab with:

 void save()
     {
         string path = "Assets/test.prefab";
         SaveObject.SaveAsPrefab(_database.NpcList[0].ItemPrefab, path);
     }

And Well... Error saying: ArgumentException: Can't save persistent object as a Prefab asset UnityEditor.PrefabUtility.SaveAsPrefabAssetArgumentCheck

Do anyone know what is happenning and how to fix it? Or Maybe suggest another solution, like saving whole class as a prefab?

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