Ryzom

I have read the light_cycle_manager file , And I write a my own one according to it.
But it can just generate only one light, I think it's my param's problem. At this,I want to get some good params about simulating the light (maybe the ryzom has some,
but I don't know where it is!),or tell me where is the ryzom's param.

Another is that the light_cycle_manager is changing through the time change. So I need to write a class to describe the game_time? How to make my own time in game, for example:
I want that a day = 5 minutes .