Comparing Object Instance at Runtime (AssetReference)

Unity Engine
1

How do I compare a normal game object with one instantiated from an AssetReference to see if they came from the same prefab?

For example:

I have a tilemap prefab that I marked as addressable. I also have a tile called TileA that I placed on the tilemap.

At runtime,

I want to iterate through the Tiles and check if any of them == TileA.
If I don’t use addressable, this is simple as the tiles placed on the tilemap can be compared to TileA.

But with addresables, then they are referencing different instances. I assume this is because the tilemap is marked addressable, it will bundle in version of TileA. Therefore the bundled version of TileA is different instance of the original tile.

I would compare it to that addressable TileA if possible but not sure how, as I don’t have asset reference to that and it’s created indirectly by Unity.

2

This question has been asked a lot around here and unfortunately the answer is that there’s no built-in way to do it. You have to basically just create your own identifier on the prefab (perhaps a script with a “TilePrefabId” field) to do comparisons with.

That being said - I’ve never seen this question in the context of tilemaps (nor have I ever used Tilemaps) so I’m not sure what xtra complications that introduces.

1 Like
3

Thanks, that’s unfortunate.

As a “work around” we have been using a custom string field or the prefab name when possible to compare. But looks like that is the “way to do it” for now. Thanks again!

4

An old question, but this is what works for me

var resourceLocation = Addressables.LoadResourceLocationsAsync(<YOUR_ASSET_REFERENCE>).WaitForCompletion().First();
    Debug.Log($"{resourceLocation?.PrimaryKey} : {resourceLocation?.InternalId}");

ResourceLocation.PrimaryKey is a string containing the Addressable asset ID
ResourceLocation.InternalId is a string containing the relative path to the addressable prefab asset - i.e. “Assets/MyPrefab.prefab”

1 Like