To get proper sun and moon lighting, I spent a day adding Caelum. This is an Ogre plugin for sun and moon and precipitation and everything atmospheric. I didn’t quite get it working and as I was looking for solutions I found that the person who created Hydrax (water and oceans) is now building a sky system. I think I might wait to see how that comes out. This means that, for the moment, Caelum build information is in the source tree but the ifdef in LookingGlassOgre is commented out to disable any use of that library.