Non-main sequence stars

[aranasaurus]

I need to figure out a way to generate non-main-sequence (white dwarfs, supergiants, pulsars?, black holes???, etc) stars. I was thinking about adding age to the generation algorithm and then using that to determine if the star is in its main sequence or beyond (or before). May need to include elemental composition and mass/radius/temperature in the equation as well. Maybe create all (or some subset) of those attributes separately (weighted appropriately) and then determine the classification after... Needs more thought and some research me thinks.

[aranasaurus]

After lots of reading last night (this is a good starting/reference point) I think I'm going to use what I have now as the basis and these will be Zero Age Main Sequence ZAMS stars and then roll an age between 0 and 13.8 billion. Using the age and the star's ZAMS mass I should then be able to project its evolution and adjust its mass, luminosity, radius and then determine its new classification at the randomly rolled age.

I think that's a good overall approach for what I have now, which is seeded only by a number. But I want to seed this thing off of images (and possibly audio) in the future. At which point I'll need to make a decision: Do I want the seed to represent the beginning of the universe and project from there, or the current universe and back-generate the stars to make it so? I'd almost think that an image should back-generate but an audio file would seed and then project...