Prefab Brush from 2d-extras not working in tilemap

Question

I'm trying to use prefab brush in my project as shown in official unity tutorial here -> https://unity3d.com/learn/tutorials/topics/2d-game-creation/custom-tilemap-brush-spawn-prefabs?playlist=17093 but it doesn't work. It just places one object and then it doesn't paint more prefabs and there are thrown really ugly exceptions in console -> https://pastebin.com/bTX8vZbB

It REALLY seems like a bug, any idea how to fix that?

Answer 1

Answer by bibbis · Nov 14, 2018 at 10:51 PM

I can confirm it's a bug and I know how to work around it for now.

Click on the Tilemap that you want to paint on to make it active.

Then when you paint 1 object by clicking on your grid, the object will be painted AND the layer get's un-selected as the Active Tilemap.

The next time you try to paint, you will get the error.

To make the tilemap active again, you have to select something else in the hierarchy, and then select the tilemap again.

So just keep re-selecting it like this after you paint each object.

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Answer 2

Answer by Dmytrenko · Jan 14, 2019 at 11:45 PM

The bug still exists in the Unity 2018.3.1f1, so I create a simple (and not much elegant) workaround. Now you need to enter a tilemap name (name of a gameobject in a scene) on which you want to draw. Deselection still does, but at least you can draw without distractions. Replace script (make a backup) on path \Tilemap\Brushes\Prefab Brush\Scripts\Editor

alt text

prefabbrush.zip (1.4 kB)

33b03-clip-10kb.png (10.7 kB)

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Prefab Brush from 2d-extras not working in tilemap

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