Unity Issue Tracker - UnityEvent's type from a derived class is not displayed in the inspector

Duplicate

Duplicate in 2018.4.X, 2019.3.X

Votes

1

Found in

2018.4.9f1

2018.4.12f1

2019.2.5f1

2019.3.0a12

2020.1.0a1

Issue ID

1194769

Regression

Yes

UnityEvent's type from a derived class is not displayed in the inspector

uGUI

-

Oct 29, 2019

Steps to reproduce:
1. Open the project attached by the user ("2018.4.8f1_toMigrate.zip")
2. Open "SampleScene"
3. Click on the "Main Camera" GameObject
4. Observe the "My Event Component Derivated" Component

Expected result: "My Private Event" event's type is recognized and displayed in the Inspector
Actual result: "My Private Event" event's type not displayed in the Inspector

Reproducible with: 2018.4.12f1, 2019.2.11f1, 2019.3.0b9, 2020.1.0a9
Not reproducible with: 2017.4, 2018.4.8f1, 2019.2.4f1, 2019.3.0a11

Note:
- "MyEventComponentDerivated" class is derived from "MyEventComponent" class. The latter is displayed as expected in newer versions after the case 1188593 was fixed

This is a duplicate of issue #1196591

Upgrading the project results in missing System.Serializable UnityEvent function

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Comments (1)

agauthierCAE

Oct 30, 2019 14:28

For completeness

- MyEventComponent.cs:

[System.Serializable]
public class MyIntEvent : UnityEvent<int>
{ }

public class MyEventComponent : MonoBehaviour
{
public MyIntEvent m_MyEvent;

[SerializeField]
private MyIntEvent m_MyPrivateEvent;
}

- MyEventComponentDerivated.cs:

public class MyEventComponentDerivated : MyEventComponent
{ }

Attaching MyEventComponentDerivated on a GameObject will report the event "My Private Event ( )" where it should have been "My Private Event (Int32)".

This blocks all dynamic bindings (or breaks all existing binding if you were on a Unity version that didn't had the issue)

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