So here is a simple implem of rendering based on dual playfield.
You can see a quick video here (A500 vanilla) :
[ Show youtube player ]
Here is the adf, so you can test all that in a real Amiga : simple move with the joystick left or right
sf1.zip
About this demo :
The back is in 8 colors + some copper enhancements. With the help of a graphist we could get something better...
The two chars are in 7 colors. I downgrade all the chars frames and it works pretty well. For this little demo, only the "walk" frames are used.
Here is the background without the copper magic :
All together :
By the way, I used this fabulous tool to set the rasters :
https://gradient-blaster.grahambates.com/
So I am curious what it can give with Scorpion.