custom struct not showing up in inspector?

Question

I'm trying to cluster data into better handleable chunks. I'm experimenting with classes and Javascript structs (as described here). My custom structs are not showing up in the inspector even though similarly coded classes do! I can access/edit them from a script just fine but tracking them in the inspector or even setting their values is not possible. What's wrong wit my implementation?

 #pragma strict
 
 var dummy1 : Vector3; // shows up
 var dummy2 : TestStruct; // does not show up
 var dummy3 : TestClass; // shows up
 var dummy4 : Vector3; // shows up
 
 function Start () {
     dummy2.t=2;
     dummy3.t=3;
     print(dummy2);
     print(dummy2.t);
     print(dummy3);
     print(dummy3.t);
 }
 
 class TestStruct extends System.ValueType{
     var x : float;
     var y : float;
     var z : float;
     var t : float;
 }
 class TestClass {
     var x : float;
     var y : float;
     var z : float;
     var t : float;
 }

Answer 1

Best Answer

Answer by Setzer22 · Dec 28, 2012 at 11:14 PM

I'm afraid this can't be done on Unity. Classes will do fine but structs can't be serialized with Unity and thus, won't display on the inspector. I don't know the reasons for this limitation (I think it's fair to call it a limitation) but I bet this is because of structs being value types, not refference ones, but as floats and integers can be assigned, there might be something else there...

Anyway, you might want to check this out: http://forum.unity3d.com/threads/36395-How-do-I-make-member-structs-accessible-in-the-editor?highlight=struct+inspector

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Golan2781 · Dec 29, 2012 at 08:25 AM 0

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Thanks, that'll save me a lot of time trying. :D

It seems like a pretty hefty limitation indeed, especially seeing how Unity's own structs work fine and fast. Is there a feature request for this? I wasn't able to find one.

Answer 2

Answer by jannis99 · Dec 11, 2015 at 03:23 PM

Serializing structs in Unity is actually possible now. I found this on the forums (Link):

     [System.Serializable]
     public struct PlayerStats
     {
         public int moveSpeed;
     }

I have tried it and it works fine.

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Zeratul3D · Jul 26, 2018 at 04:02 PM 1

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Works perfectly also on Unity 2018.

Zack-Londres · Aug 04, 2020 at 06:41 PM 1

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This is the way

custom struct not showing up in inspector?

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