I'm doing a 3D simulation. Now I need something like variables in imperative languages. My mainLoop check for new events and renders scene.
I saw it. The problem is, I need an amount of 100*X of mutable variables to implement the system (camera position, rotation, aceleration, ..., position and deformetion infomations for every object, ..., renderer situations [like temprary fading and other efects], ... and more)
| Then you probably want a big labeled record, depending on your needs, you might even want to go a step further, and design a scene description format for your 3d simulation. instead of updating and interpreting global variables, or passing a large record around, you would pass around a higher-level description of the state of your simulated environment. your mainLoop would compute both the current scene to be rendered and the follow-on state to be passed to the next round. much easier to read, as all the low-level updates are confined to the mainLoop, and both the scene description and its interpretation/rendering are composed from smaller parts. the scene description language would be the interface between implementing your 3d simulator and describing what is to be simulated. perhaps the following might give you an idea of the possibilities: http://www.conal.net/papers/ (Fran, Vertigo, Pan) http://www.conal.net/papers/tse-modeled-animation/ http://users.info.unicaen.fr/~karczma/arpap/ (Clastic) http://www.cs.kent.ac.uk/~cr3/FunWorlds/ cheers, claus