Haha, good luck 😉 I also enjoyed your game, tho, I would give a tiny tip for better outlines (well, they look better to me):
function ospr(s, x, y)
all_black()
for xx=-1,1 do for yy=-1,1 do if (abs(xx)+abs(yy)==1) spr(s,x,y)
end end
pal()
spr(s,x,y)
end
I hope this helps ;)