CustomEditor: button with CanEditMultipleObjects

I would like to make this script work with multiple objects.
It sets the expulseAmount on multiple objects correctly, however it doesn't call the button named "Expulse!" on every object.

What am I doing wrong?

Code (CSharp):

1. #if UNITY_EDITOR
2. using UnityEditor;
3. #endif
4. using UnityEngine;
5.  
6. public class Expulsable : MonoBehaviour
7. {
8.     private Rigidbody body;
9.     public Vector3 expulseAmount;
10.  
11.     void Awake()
12.     {
13.         body = GetComponent<Rigidbody>();
14.     }
15.  
16.     public void Expulse(Vector3 _impulse)
17.     {
18.         body.AddForce(_impulse, ForceMode.Impulse);
19.     }
20. }
21.  
22. #if UNITY_EDITOR
23. [CustomEditor(typeof(Expulsable)), CanEditMultipleObjects]
24. public class ExpulsableEditor : Editor
25. {
26.     SerializedProperty expulseAmount;
27.  
28.     private Expulsable Expulsable;
29.     private void OnEnable()
30.     {
31.         Expulsable = target as Expulsable;
32.         expulseAmount = serializedObject.FindProperty("expulseAmount");
33.     }
34.  
35.     public override void OnInspectorGUI()
36.     {
37.         serializedObject.Update();
38.  
39.         EditorGUILayout.PropertyField(expulseAmount);
40.         if (GUILayout.Button("Expulse!")) // this only expulses one object!
41.         {
42.             var expulsable = (Expulsable)target;
43.             Debug.Log($"expulsing: {expulsable.gameObject.name}");
44.             expulsable.Expulse(expulseAmount.vector3Value);
45.         }
46.  
47.         serializedObject.ApplyModifiedProperties();
48.     }
49. }
50. #endif

 

As far as I understand, you can't call a method on Serialized Objects like that. You could try broadcasting a message to them in order to do so.

 

There is a way to do this, see this SO answer: https://stackoverflow.com/questions...le-objects-in-gui-with-caneditmultipleobjects

For your example it would look like this:

Code (CSharp):

1. if (GUILayout.Button("Expulse!"))
2. {
3.     foreach (Object target in targets)
4.     {
5.         var expulsable = (Expulsable)target;
6.         Debug.Log($"expulsing: {expulsable.gameObject.name}");
7.         expulsable.Expulse(expulseAmount.vector3Value);
8.     }
9. }