After a few hours of tinkering, here is the basic 1 - line kernel of an idea for a game inspired by an old C64 game I used to play , International Karate.
No gameplay yet , but my hope would be to have most if not all of the moves from International Karate. Would be 2 player only.
The main challenge will be graphics. I am using Assembly , and the players are just quad sized player graphics. So having the animations and graphics look decent , where kicks , flips and punches actually look like kicks , flips, and punches, with my limited graphics skills might not be possible.
I do not know any routines for making sprites with different colors on a single scanline, which would make graphics much sharper. Perhaps I will have to finally get into Bb and try to stretch my skills a bit.