First-Person walk-around example

So, if nothing else, maybe this technique will be useful to someone else, but I’d also love it if anyone has any ideas on making it more efficient. I needed to create a system for allowing a first-person walk-around experience in Touch that could deal with slopes, stairs, etc. I ended up doing it by using renders with Depth TOPs for collisions. Specifically, I have a camera that points down and the system holds the player a fixed distance from the ground. Works pretty well on simple scenes. Try walking around the attached scene with the arrow keys. You can climb the stairs, hop on top of the elevator; you’ll even observe how you bob up and down as the ground deforms.

On more complex scenes, the extra renders necessary to do collisons seems to be as expensive as the main view render… which can be a problem for me. Any ideas on how to improve this?
walktest.10.toe (14.7 KB)

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SUPERTHANKS!! WONDERFUL JOB!!