This seems to simplify things and also explain the CC2 semantics: force
floors activate while being stood on (which happens, I guess, during
idle), so it applies to objects that start the level on force floors.
This was probably done to make force floor flipping work, too. On the
other hand, ice still only activates when being stepped on.
This does simplify things a bit, and it also fixes the replay for CC2LP1
level 160, Sneak Around. It breaks three Voting replays, unfortunately,
but doesn't break anything else, so I'm inclined to call it better.
I had it mostly right based on experimentation, but had the conditions
inside-out, which allowed this case to slip through the cracks. This
makes the Settlement of Arrakis replay sync.
Eevee (Evelyn Woods)