The name 'PrefabUtility' does not exist in the current context

Hello I am trying to make a copy of a prefab and then disconnect the copy from the prefab. This code works fine when I run my game in Unity, but when I am trying to build my game it gives me an error.



This is my code:

Code (CSharp):

1. using System.Collections.Generic;
2. using UnityEditor;
3. using UnityEngine;
4.  
5. public class UserModule : MonoBehaviour {
6.  
7.     private IDictionary<string, User> users = new Dictionary<string, User>();
8.  
9.     public GameObject userObject;
10.  
11.     void Start()
12.     {
13.  
14.     }
15.  
16.     public User getUser(string id)
17.     {
18.         return users[id];
19.     }
20.  
21.     public User createNewUser(string id, float x, float y)
22.     {
23.         Debug.Log("Creating new User..");
24.         GameObject gameObject = Instantiate(userObject, new Vector3(x, y, 0f), Quaternion.identity);
25.  
26.         PrefabUtility.DisconnectPrefabInstance(gameObject);
27.  
28.         User user = gameObject.GetComponent<User>();
29.  
30.         user.setup(id);
31.  
32.         users.Add(id, user);
33.  
34.         return user;
35.     }
36.  
37.  
38.  
39.     public void removeUser(User user)
40.     {
41.         user.remove();
42.         users.Remove(user.getID());
43.     }
44. }
45.  

 

That's an Editor only function (Using UnityEditor), the script should reside in an Editor folder, and won't be available at run time.

 

Prefab.Utility doesn't exist plz help

 

PrefabUtility exists all day long... ONLY in UnityEditor namespace.

If you want to use this in your game build, YOU CANNOT.

If you want you can use conditional compilation directives to remove the code during build time.

https://docs.unity3d.com/Manual/PlatformDependentCompilation.html

The directive you want is likely UNITY_EDITOR

 

Sorry to necro, but I get this error in a script I have despite using the UnityEditor namespace, it doesn't prevent me from playing, but it does prevent me from building lol. Any idea how to fix this? I have an object spawner that i used for spawning objects in the scene camera with a right click,

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEditor;
5.  
6. public class ObjectSpawner : MonoBehaviour
7. {
8.     public bool editMode, placingWater;
9.     [SerializeField] bool addRotation;
10.     public Transform parent,waterParent;
11.  
12.     public GameObject[] objsToSpawn;
13.     [SerializeField] GameObject water;
14.     public Vector2 sizeRange;
15.  
16.     public GameObject[] propObjects;
17.  
18.     List<GameObject> spawnedObjects;
19.  
20.     [SerializeField] int numObjectsToSpawn;
21.  
22.     [SerializeField] float waterYPos;
23.  
24.     [SerializeField]Vector2 waterOffset;
25.  
26.     List<GameObject> waters;
27.  
28.     public void SpawnRandomObjects()
29.     {
30.         spawnedObjects = new List<GameObject>();
31.     }
32.  
33.     public void SpawnObject(GameObject obj, Vector3 pos)
34.     {
35.         GameObject objToSpawn = PrefabUtility.InstantiatePrefab(obj) as GameObject;
36.  
37.         objToSpawn.transform.position = pos;
38.         if (parent != null) objToSpawn.transform.parent = parent.transform;
39.  
40.         float scale = Random.Range(sizeRange.x, sizeRange.y);
41.         float rotation = Random.Range(-180, 180);
42.         float x = Random.Range(-7.5f, 7.5f);
43.         float z = Random.Range(-7.5f, 7.5f);
44.  
45.         objToSpawn.transform.localScale = obj.transform.localScale * scale;
46.         if (addRotation) objToSpawn.transform.eulerAngles = new Vector3(x, rotation, z);
47.     }
48.  
49.     public void PlaceWater(Vector3 pos)
50.     {
51.         if (waters == null) waters = new List<GameObject>();
52.  
53.         GameObject objToSpawn = PrefabUtility.InstantiatePrefab(water) as GameObject;
54.         waters.Add(objToSpawn);
55.         pos.x = Mathf.RoundToInt(pos.x /30)*30 + waterOffset.x;
56.         pos.y = waterYPos;
57.         pos.z = Mathf.RoundToInt(pos.z / 30)*30 + waterOffset.y;
58.    
59.         objToSpawn.transform.position = pos;
60.         objToSpawn.transform.parent = waterParent.transform;
61.  
62.     }
63.  
64.     public void DestroyAllObjects()
65.     {
66.         if (spawnedObjects.Count < 1) return;
67.  
68.         for (int i = 0; i < spawnedObjects.Count; i++)
69.         {
70.             Destroy(spawnedObjects[i]);
71.         }
72.  
73.     }
74.  
75. }

I know it's kinda sloppy, i just used this on a monobehavior because i couldn't figure out how to get it in an editor window lol. But the error is pretty annoying, everytime i build i have to comment out these 2 methods.

The error disappears if i put it in the editor folder, but the inspector of the script on my gameobject becomes blank!

 

EDIT: please read my post that you quoted.

 

What did you not understand at this sentence:

This is a class that is defined in the Unity editor application itself. It does not exist at runtime. Yes, you can use it when you test it inside the editor, because you are inside the editor. However the Unity engine does not have this class so it can not be used at runtime. Runtime scripts can not use anything from the UntiyEditor namespace. That whole namespace MUST NOT be used at runtime because you CAN NOT use it, no matter how much you wish you could or how much you want you could. It's not possible.

The "InstantiatePrefab" method creates a prefab instance inside the editor. At runtime you would just use UnityEngine.Object.Instantiate.

 

Use the directive to exclude the code from your build

Code (CSharp):

1. #if UNITY_EDITOR
2.       Debug.Log("This code is editor only, and will not be in the build");
3.     #endif

 

That's all i needed to know lol. To everyone else, i wasn't trying to use it during build, I just needed to have it on a monobehavior and wasn't sure how to get it to build without commenting out the lines every time i build(I don't believe the script does anything in gameplay, it's a scene view only script lol). This is what i needed. Thank you
Edit: Ah, at Kurt Decker, I didn't notice your last sentence that says you can add the #if UNITY_EDITOR lol

 

It just doesnt work like it builds the thing but it doesnt work as expected

 

How to report your problem productively in the Unity3D forums:

http://plbm.com/?p=220

This is the bare minimum of information to report:

- what you want
- what you tried
- what you expected to happen
- what actually happened, especially any errors you see
- links to documentation you used to cross-check your work (CRITICAL!!!)

The last step is critical because it may reveal how your expectations have diverged from the API reality.