Clickable grid on ground

Being very new to jME3, I have a question:

I want the “ground” to be a kind of grid. I have a texture (e.g. stones) which is being painted on the screen using terramonkey.

Now i want to place a “grid” on it to have, let’s say, 256 squares. If I hover with the mouse, I want it to highlight a bit and if I click a square I want it to remain highlighted?

Is this possible with terraMonkey or do I have to use a lot of boxes on the ground? :slight_smile:

Thanks for any hint!

I guess that you can do it with shader.

Add another texture defining highlighting to sheder you would use otherwise and modify this texture when you hover/click.