Simple Inspector based Map Editor

Hey guys,
Can someone provide me with some information about how to implement a very simple Grid/Map Editor via the Inspector and a Scriptable Object? I tried various implementations but Im not happy at all.

Basically, what Im looking for is the simplest map editor ever: a 2d array grid of Sprites edited via the Inspector and saved as Scriptable Object.

Attached is the code Im using right now, as well as a screen. This shows the implementation of using a Color (was not able to remove the Eyedropper).

But: I would prefer using Sprites to determine the Tile that is placed on a grid space. But Sprites do not show up in the Inspector at all (I see just that selection ring and the beginning of the filename).

I guess I have to replace Color with a CustomPropertyDrawer - any advice here?

Code (CSharp):

1. [CreateAssetMenu(fileName = "MapData", menuName = "New Map")]
2. public class MapData : ScriptableObject
3. {
4.     private const int defaultGridSize = 3;
5.  
6.     [Range(1, 30)]
7.     public int gridSize = defaultGridSize;
8.  
9.     public CellRow[] cells = new CellRow[defaultGridSize];
10.  
11.  
12.     public Color[,] GetCells()
13.     {
14.         Color[,] ret = new Color[gridSize, gridSize];
15.  
16.         for (int i = 0; i < gridSize; i++)
17.         {
18.             for (int j = 0; j < gridSize; j++)
19.             {
20.                 ret[i, j] = cells[i].row[j];
21.             }
22.         }
23.  
24.         return ret;
25.     }
26.  
27.     [System.Serializable]
28.     public class CellRow
29.     {
30.         [ColorUsageAttribute(false)]public Color[] row = new Color[defaultGridSize];
31.     }
32.    
33. }

 

Sorry for the double-post (and answering my own question) - if anybody is interested:

Im now using a open-source C# script (2dTilemapEditor) in combination with my own code and project. The script is outdated but easy to adjust and implement if you want to give it a whirl yourself:

https://github.com/toinfiniityandbeyond/unity-tilemap/

And here we have two screenshots, showing the tilemap editor and the prepared scene at runtime: