With this setup you are able to get the heightmap for a simulation in Houdini. In the files you will find the setup that is needed to do this.
There are 2 examples one with falling bricks and the other one with a breaking cube to get debris.
You can see it working in real time on my blog post:
-Houdini file with the setup
-SBS file to see the results
-The 30+min video itself ,that is also available on Youtube.
Please make sure to install the game dev tools to open the files.
Update: Better example of what can be done with tool. (See new cover picture.)
- New heightmap example of Debris
- Adding the ID map of the new debris