Tilemap custom brush how to prevent default mouse behavior when painting tiles?

Hi

Not sure if I should post this on 2D area or here. Well anyway, move this thread if needed.

I was trying to create a scriptable brush and wanted to use modifier keys / right mouse click for extra painting features.

I have a typical paint method like this:

Code (CSharp):

1.  public override void Paint(GridLayout grid, GameObject brushTarget, Vector3Int cellPos)
2. {
3.        // my code here
4. }

I can create the default painting behavior and erase things I draw.

But I don't seem to be able find out a way to override / use the mouse event like I can do in editor scripts.

Seems like all the modifier keys (Ctrl, Shift and Alt) are reserved and do either erasing, panning or change the brush size no matter what I tried.

TL;DR
So is it possible to override mouse buttons default behavior in GridBrush derived custom brushes?

 

After testing this for 3 hours - I don't think all editor events work in brush.

I can't get any of these to work in Paint method, but I can tap into some events by adding a callback method to SceneView:

Code (CSharp):

1. SceneView.onSceneGUIDelegate += OnSceneGUI;

However, key events like key up don't seem to work, and not even all the modifier keys work. Then again, I have no idea if these are even supposed to work from GridBrush methods.

Would like to hear some comments about this.

 

@ChuanXin

Thank you for the info! It will most likely be helpful.

I haven't touched GridBrushEditor class, so I'll have to read about it.

So far I managed to do most if not everything I need from onSceneGUIDelegate attached method, using only keys that are not reserved by Tilemap brush .