10-30 years? More like a couple months of hard concentrated work.
And what effects would a supernova have on intelligent life?
I was thinking about something like accurate life/civilization simulation (like climate simulation/stellar evolution/collision on full release), that would require low time steofor accuracy.
Now you can't just zap thousands of years in planetary system/climate simulation to see effects of changing orbit/precession of Earth. These calculations are done in supercomputers now, but in 20 years our computers will be more powerful. Just compare with average computers of 1994 year.
It depends: Closest planets would lose all life (or even get molten), farther ones would lose multicellular/intelligent life or civilizations depending on distance.
Farther ones would get disrupted, or notice it shining and reacting to it, displaying some flavor text in planetary information.
For now supernovas just fry everything.