Is it possible to change Kernel options more than once?

[sidcrazy]

Hey all. Long time fan, and I am wanting to use no_blank_lines for a title screen, but I don't need it for my game. Is it possible to reset, or change kernel options when loading your main loop?

 

Thanks,

[+Gemintronic]

Nope. You are literally setting the game engine used when you set the kernel options. RevEng came up with the multi-kernel framework in this same section. That allows you to have a different kernel each 4k.

[sidcrazy]

Cool, thanks for letting me know.

[+Gemintronic]

You can create interesting stylistic effects without resorting to no_blank_lines:

Basically, shift the screen every other frame.

 set smartbranching on
 set kernel_options pfheights pfcolors
 set romsize 4k

 dim counter = a

 pfheights:
 8
 2
 2
 2
 2
 8
 2
 2
 2
 2
 42
end

 pfcolors:
 $F0
 $F2
 $F4
 $F6
 $F8
 $FA
 $F8
 $F6
 $F4
 $F2
 $F0
end

 playfield:
 ................................
 .XXXX.....XXX....X.....X..XXXXXX
 X........X...X...XX...XX..XXXX..
 X...XX..XXXXXXX..X.X.X.X..X.....
 .XXXX...X.....X..X..X..X..XXXXXX
 ................................
 .XXXX...X.....X..XXXXXXX..XXXXX.
 X....X..X.....X..XXXXX....X....X
 X....X...X...X...X........XXXXX.
 .XXXX.....XXX....XXXXXXX..X....X
end

 COLUBK = $94

main
 counter = counter + 1

 rem if the first bit in counter is 1 then shift the screen
 if counter{0} then playfieldpos = 8 else playfieldpos = 7
 drawscreen
 goto main