Correct way to destroy scripted tile in Tilemap on collision

I have created a script that extends TileBase and have created a tile using that. It has a gameObject on it following https://docs.unity3d.com/ScriptReference/Tilemaps.TileBase.StartUp.html where I drop a prefab on the tile before putting it in the palette and painting.

There is a ball with collider and rigidbody2d above a tile and it falls to break the tile but I run into an error;

When my ball collider hits the tile and launches the following OnCollisionEnter2D

Code (CSharp):

1. void OnCollisionEnter2D(Collision2D collision) {
2.         // This code came from https://github.com/Unity-Technologies/2d-techdemos in the brick scripts
3.        
4.         Vector3 hitPosition = Vector3.zero;
5.         if (tilemap != null)
6.         {
7.             foreach (ContactPoint2D hit in collision.contacts)
8.             {
9.                 hitPosition.x = hit.point.x - 0.01f * hit.normal.x;
10.                 hitPosition.y = hit.point.y - 0.01f * hit.normal.y;
11.  
12.                 // This line in particular is not working
13.                 tilemap.SetTile(tilemap.WorldToCell(hitPosition), null);
14.             }
15.         }
16. }

I get the error

Code (CSharp):

1. Destroying GameObjects immediately is not permitted during physics trigger/contact, animation event callbacks or OnValidate. You must use Destroy instead.
2. UnityEngine.Tilemaps.Tilemap:SetTile(Vector3Int, TileBase)
3. TilemapManager:OnCollisionEnter2D(Collision2D) (at Assets/Scripts/TilemapManager.cs:26)

So I tried

Destroy(tilemap.GetInstantiatedObject(tilemap.WorldToCell(hitPosition)));

and then setting the tile to null but that still gives the error. I even tried moving the nulling code into the OnDestroy of the ball but that still gives the same error.

How am I supposed to use the GameObject in a script that extends TileBase and make it destructible?

The attached UnityPackage is my setup

 

Hello, i write an article specially for this, let's check it if you need and answer : http://materiagame.com/2019/04/21/unity-2d-tile-map-tutorial-destructible-tiles

 

I know I'm necro-ing an old post here, but I was having the same issue with removing tiles with attached gameobjects and couldn't find a posted solution. In the end the solution that worked for me was destroying the gameobject and setting the tile to null like in the brick breaker demo, but from within a coroutine:

Code (CSharp):

1. IEnumerator DelayedDestroy()
2.     {
3.         yield return new WaitForEndOfFrame();
4.  
5.         Destroy(this.gameObject);
6.         DestroyTile();
7.     }
8.  
9. void DestroyTile ()
10.     {
11.         Tilemap tilemap = GetComponentInParent<Tilemap>();
12.         Vector3Int pos = Vector3Int.FloorToInt( transform.position );
13.         tilemap.SetTile(pos, null);
14.     }

Where the coroutine is started within an OnTriggerEnter2D method. As far as I understand, setting a tile to null with Tilemap.SetTile() tries to immediately destroy the attached gameobject which isn't allowed within OnTriggerEnter so this solution circumvents this issue by waiting until the next frame to clear the tile.