Retain values of a List of list of a class in editor?

Question

Run down of what I am doing: Using scene view in editor to modify marching cubes set.

My problem is: the values in a List i am using for the marching cubes grid are not being retained in the scene. So when I save/close then reload the List is empty and null.

My List looks something like this..

 public class RoomCubes : MonoBehaviour
 {
     public List<List<List<voxel>>> vox;
 }
 
 public class voxel{
     public bool check;
     public bool mark;
 }

Answer 1

Best Answer

Answer by FlyingHighUp · Mar 28, 2017 at 08:26 PM

Unfortunately lists of lists are not serialized (and therefore not saved) by Unity. A hacky, but working solution is to define a class for each dimension of your array.

E.g.

  public class RoomCubes : MonoBehaviour
  {
 [SerializeField]
 List<VoxelD1> voxels;

 [System.Serializable]
 class VoxelD1
 {
       List<VoxelD2> voxels;
 }
 
 [System.Serializable]
 class VoxelD2
 {
       List<Voxel> voxels;
 }

 [System.Serializable]
 public class Voxel
 {
      public bool check;
      public bool mark;
  }
  }

Then, to get the element at 1,1,1

  voxels[1].voxels[1].voxels[1]

Which is pretty ugly. You could write a method

 List<List<List<voxel>>> generateListRepresentation();

to generate your previous format for ease of use.

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Benjames · Mar 29, 2017 at 03:10 PM 0

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So I changed it to array instead of a list and made a class for each dimension like you suggested. It works! Thank you.

I don't know if its in my head or not but it seems slower. It's because the editor is updating? alt text

[edit] I suppose it should of been obvious that a large array would slow down the editor. I made a child object that is there only to hold the array. If I happen to click the child object my computer practically freezes with a 40x40x40 array. But alas if I leave it alone editing the marching cubes is pretty quick.

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Retain values of a List of list of a class in editor?

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