Here is what I was thinking about when I said that current interface can be simplified:
All options about the physical state of the world should be moved to one screen within options and presented in terms that are obvious and relate to our normal experience.
So the "World" section would include:
1) World size (already there, but we can add custom names like "droplet", "puddle", "pond", "ocean")
2) World type - toroidal, non-toroidal (already there). "Toroidal" should disable gravity by default (but can be turned back in advance options)
3) World media with 5 options
- space
- air
- water
- earth surface
- earth soil
4) Size of organisms with 5 options:
- bacteria
- eukaryotic cell
- dust mite (not sure what else is the size of ~400 micrometers)
- insect
- animal
3) and 4) together should automatically assign values to "friction", "brownian motion" and "movement factor" (I have a proposed table in excel, can share). It should be possible to assign these things manually, but only in advanced options.
5) Gravity. Several choices like "space", "Moon", "Earth", "Jupiter"
6) Other related stuff, like "Day/Night", "Boyuancy"
7) Instead of "Pondmode" have a more general "Sideways view/Top-bottom view". With "Top-bottom" automatically disabling gravity.