Kevin, if you could explain how to do that in Cinema 4D, that would be great! I was actually going to ask a similar question in the Cinema 4D forums, but it looks like you could tell me.
Michael, I tried bounce and slide with CC particle world, and making the grid pretty small. They still bounced/slid on an invisible plane regardless if the grid extended that far or not. For particular, I made a plane out of a solid, and tried the same thing as particle world, except it got faster as it went off the edge of the plane for some reason!
And thank you Walter, I’ll try that in a bit! I did something similar to what you typed right now, except I don’t think I set the floor mode to “Layer Size”