Woohoo, I survived another year! F15 D’Gamma Clone is a C64 conversion of the 2016 C64CD release of the same name on the Apple II, with some fairly serious modifications to keep the memory footprint down and add a brutal conversion of Ben Daglish’s music from the 16-bit game 3D Galax by aNdy.
The most significant change is that the C64 version is using characters – under 3.5K in total for the screen and font data – compared to 8K of bitmap data for the Apple II original; it would have been possible to get that code running directly on the C64 but there was no way it would fit into the ICC‘s 16K memory footprint with the extra colour data and music.
There was a new C64CD release last Thursday called F15 D’Gamma Clone, it’s a crack intro style single screen affair for the Apple II (based on two intros by Black Bag and The Six Pack) and is my second released production for said machine. Of course it didn’t bloody work in the initial release because the way I was reading the vertical blank isn’t a constant, but Atari Age user cybernesto helpfully forked and fixed the source code (and I’m reasonably sure the changes were merged back into the main branch… but don’t quote me on that) to at least get it working on the Apple IIc and I’ve since received some very helpful pointers on the topic along with some great feedback!
Another AA forumite called Newsdee very kindly recorded video of the code running on his Apple IIe as well and I’m surprised at how well things came out there considering my clunky and painfully user unfriendly graphics converter!
I’ve had quite a bit of fun prodding at the Apple II with this and Septic, although the emulators aren’t anywhere near as accurate as they could be for testing code. I do have more ideas to play with, though…