Editor callback for Prefab Mode being open

Hi,

You will find the callbacks in the

PrefabStage

class (namespace:

UnityEditor.Experimental.SceneManagement

)

Usage example:

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.SceneManagement;
3. using UnityEditor;
4. using UnityEditor.Experimental.SceneManagement;
5.  
6.  
7. [InitializeOnLoad]
8. class CustomPrefabEnvironment
9. {
10.     static CustomPrefabEnvironment()
11.     {
12.         PrefabStage.prefabStageOpened += OnPrefabStageOpened;
13.     }
14.  
15.     static void OnPrefabStageOpened(PrefabStage prefabStage)
16.     {
17.         Debug.Log("OnPrefabStageOpened " + prefabStage.prefabAssetPath);
18.  
19.         // Get info from the PrefabStage
20.         var root = prefabStage.prefabContentsRoot;
21.         var scene = prefabStage.scene;
22.         var renderer = root.GetComponent<Renderer>();
23.  
24.         // If no renderer skip our custom environment
25.         if (renderer == null)
26.             return;
27.  
28.         // Create environment plane
29.         var plane = GameObject.CreatePrimitive(PrimitiveType.Plane);
30.         SceneManager.MoveGameObjectToScene(plane, scene);
31.  
32.         // Adjust environment plane to the prefab root's lower bounds
33.         Bounds bounds = renderer.bounds;
34.         plane.transform.position = new Vector3(bounds.center.x, bounds.min.y, bounds.center.z);
35.     }
36. }
37.