proper casting to unity event base

Assets/CustomEventTest.cs

@@ -0,0 +1,43 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Events;
+
+public class CustomEventTest : MonoBehaviour
+{
+    public UnityEvent simpleEvent;
+    public CustomComplexEvent complexEvent;
+
+
+    public void TriggerSimpleEvent()
+    {
+        if(simpleEvent != null)
+        {
+            simpleEvent.Invoke();
+        }
+    }
+
+    public void TriggerComplexEvent()
+    {
+        if (complexEvent != null)
+        {
+            complexEvent.Invoke("a", 1, 2);
+        }
+        StartCoroutine(DelayedTrigger("Test", 0, 1));
+    }
+
+    private IEnumerator DelayedTrigger(string message, int a, int b)
+    {
+        for(int i = 0; i < 20; i++)
+        {
+            yield return new WaitForSeconds(0.1f);
+            if (complexEvent != null)
+            {
+                complexEvent.Invoke(message, a, b);
+            }
+        }
+    }
+}
+
+[System.Serializable]
+public class CustomComplexEvent : UnityEvent<string, int, int> { }

Assets/EventVisualizer/Editor/EventsVisualizer.cs

@@ -41,7 +41,7 @@ private static List<EventCall> ExtractEvents(Component caller)
                 SerializedProperty persistentCalls = iterator.FindPropertyRelative("m_PersistentCalls.m_Calls");
                 if (persistentCalls != null)
                 {
-                    UnityEvent unityEvent = FindEvent(caller, iterator);
+                    UnityEventBase unityEvent = FindEvent(caller, iterator);
                     for (int i = 0; i < persistentCalls.arraySize; ++i)
                     {
                         SerializedProperty methodName = persistentCalls.GetArrayElementAtIndex(i).FindPropertyRelative("m_MethodName");
@@ -122,7 +122,7 @@ public static List<GameObject> GetAllObjectsInScene(bool rootOnly = false)
         }
 
 
-        private static UnityEvent FindEvent(Component caller, SerializedProperty iterator)
+        private static UnityEventBase FindEvent(Component caller, SerializedProperty iterator)
         {
             PropertyInfo eventPropertyInfo = caller.GetType().GetProperty(iterator.propertyPath);
             if (eventPropertyInfo == null)
@@ -134,8 +134,7 @@ private static UnityEvent FindEvent(Component caller, SerializedProperty iterato
             }
             if (eventPropertyInfo != null)
             {
-                UnityEvent trigger = eventPropertyInfo.GetValue(caller, null) as UnityEvent;
-                return trigger;
+                return eventPropertyInfo.GetValue(caller, null) as UnityEventBase;
             }
 
             FieldInfo eventFieldInfo = caller.GetType().GetField(iterator.propertyPath);
@@ -148,8 +147,7 @@ private static UnityEvent FindEvent(Component caller, SerializedProperty iterato
             }
             if (eventFieldInfo != null)
             {
-                UnityEvent trigger = eventFieldInfo.GetValue(caller) as UnityEvent;
-                return trigger;
+                return  eventFieldInfo.GetValue(caller) as UnityEventBase;
             }
             return null;
         }