There is (at least) two issues:
1) At the start there should be text "Hit space to start the flames, ..." but it is not visible.
2) After pressing space, rendering frames is *very* slow, apparently because setPixel() is slow, see bug #1085164
There is (at least) two issues:
1) At the start there should be text "Hit space to start the flames, ..." but it is not visible.
2) After pressing space, rendering frames is *very* slow, apparently because setPixel() is slow, see bug #1085164