Expose Properties not working, values being reset

Unity Engine
1

In the past I’ve used [ExposeProperty] to expose getter/setters in the Unity Editor.

Unfortunately, every time I press play, the values that the properties wrap get reset back to their default values. I know this has worked in the past, but for some reason, I can’t seem reproduce it working at all, even trying to use older versions of Unity.

I’ve included the necessary scripts to test this in a unitypackage. Just attach MyType.cs to a game object, change the values in the editor, and hit Play to see them get reset.

Any ideas on how to get this working again?

2

Got it finally.

Long story short: Thats just the way it works- when you hit play, the private/protected variable behind the property will be reset. You have to add [SerializeProperty] to make it save its value into the run. However, this creates the negative side effect of exposing the private / protected field in the editor. Undo that by adding [HideInInspector].

So, the resulting MonoBehavior component, after implementing [ExposeProperty] and component’s associated custom editor, will look something like: (note untested code)

using UnityEngine;
using System.Collections;

public class MyType : MonoBehaviour
{
	
    [HideInInspector] [SerializeField] int m_SomeInt;
   
    [ExposeProperty]
    public int SomeInt
    {
        get  { return m_SomeInt; }
        set  { m_SomeInt = value; }
    }
}

Here are some related links on the topic…

http://answers.unity3d.com/questions/22198/monobehaviour-properties-not-saving-their-values-from-editor
http://answers.unity3d.com/questions/17986/accessing-class-properties-through-getters-setters-in-editor-mode
http://answers.unity3d.com/questions/11775/expose-public-property-not-variable-in-inspector
http://answers.unity3d.com/questions/7673/how-do-i-expose-class-properties-not-fields-in-c
http://feedback.unity3d.com/forums/15792-unity/suggestions/273288-scripting-c-expose-properties-to-editor

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