1

Hi everyone,

I'm having an issue with enum values being reflected as their numeric values in the inspector when used in a nested array with Unity. Here's a cut down example of the code I'm trying to use.

public enum EnumType
{
    Enum1,
    Enum2
}

public class ContainerClass : MonoBehavior
{
    [Serializable]
    public class Constants
    {
        [Serializable]
        public class SubConstants
        {
            /*...*/
            public EnumType EnumVals[] = null;
        }

        public SubConstants SubConsts = new SubConstants();
    }

    [SerializeField]List<Constants> _Attributes = new List<Constants>();
}

So what I'm seeing is that I can create and modify the list of Constants but when I go to edit the array of EnumType in SubConstants, it only shows numeric values and not a drop down box of values. I've also tried making the List an array with no change.

2

Seems like the Unity Inspector has a bug with reflected type discovery. Rearranging the nesting of the classes as follows makes it work:

using System;
using System.Collections.Generic;
using UnityEngine;

public enum EnumType
{
    Enum1,
    Enum2
}

[Serializable]
public class SubConstants
{
    /*...*/
    public EnumType[] EnumVals = null;
}

public class ContainerClass : MonoBehaviour
{
    [Serializable]
    public class Constants
    {
        public SubConstants SubConsts = new SubConstants();
    }

    [SerializeField]List<Constants> _Attributes = new List<Constants>();
}
3

In case the above does not work for you. It is possible to work around it using PropertyDrawers

Editor code

[CustomPropertyDrawer(typeof(EnumAttr))]
public class EnumEditor : PropertyDrawer {
	public override void OnGUI (Rect position, SerializedProperty prop, GUIContent label) {
		System.Enum v = EditorGUI.EnumPopup (position, label, (System.Enum)System.Enum.ToObject ((this.attribute as EnumAttr).enumType, prop.intValue));
		prop.intValue = System.Convert.ToInt32 (v);
	}
}

Class code

public class EnumAttr : PropertyAttribute {
	public System.Type enumType;
	
	public EnumAttr (System.Type enumType) {
		this.enumType = enumType;
	}
}

Then for a field which is an enum

[EnumAttr(typeof(Side))]
public Side side = Side.Side1;