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Forums > C64 Coding > sideborder x y scrolling
2008-02-17 20:13
Testa
Account closed

Registered: Oct 2004
Posts: 197
sideborder x y scrolling

after months of trying and thinking i finally came with some good solutions to make a sideborder x y scroller, a routine that can swing/scroll a 40 chars wide and 25 chars (or even more) high picture in all directions... i use a linecruncher to swing from left to right and a secret routine to y scroll the picture. at the moment it is not totally bug free but i am making good progress...
the question i have is this effect done before and what is the record??? who knows an demo with this effect....

bye bye,
mcd



2008-02-17 20:29
Mace

Registered: May 2002
Posts: 1799
Scout whispered something about you being busy with something interesting.
I'm very eager to see the end result! ;-)
2008-02-17 20:37
Martin Piper

Registered: Nov 2007
Posts: 722
If it's a >=8 pixels per frame multi-colour screen scroll/swing over the side and bottom borders then I don't think I've see that effect before.
2008-02-17 20:49
Joe

Registered: Apr 2002
Posts: 229
OMG! Biltandborste in sideborder? Would be lovely to see!
2008-02-17 22:16
Codey

Registered: Oct 2005
Posts: 79
Quote: If it's a >=8 pixels per frame multi-colour screen scroll/swing over the side and bottom borders then I don't think I've see that effect before.

how do you accommodate for the resolution in the top and bottom borders since they have to be x-expanded sprites?
2008-02-17 22:27
Hein

Registered: Apr 2004
Posts: 954
I think MCD didn't mention scrolling up/down in top and bottom border, only scrolling up/down and left/right in sideborder. Still kewl, can result in a nice landscape resolution...
2008-02-18 00:11
Martin Piper

Registered: Nov 2007
Posts: 722
Quote: how do you accommodate for the resolution in the top and bottom borders since they have to be x-expanded sprites?

If the picture is sparse enough (in terms of resolution, colours or actual visible) in the areas to be drawn by sprites in the lower and upper borders it would just about be good enough to make a good visual trick.
A demo I remember used this to good effect by using horizontally stretched sprites for the lower part of a static screen. Cleverly done with suitable graphics the lower resolution wasn't that noticeable.
2008-02-18 07:07
JackAsser

Registered: Jun 2002
Posts: 2014
Quote: after months of trying and thinking i finally came with some good solutions to make a sideborder x y scroller, a routine that can swing/scroll a 40 chars wide and 25 chars (or even more) high picture in all directions... i use a linecruncher to swing from left to right and a secret routine to y scroll the picture. at the moment it is not totally bug free but i am making good progress...
the question i have is this effect done before and what is the record??? who knows an demo with this effect....

bye bye,
mcd





Linecrunch to scroll left and right? You mean VSP right? Linecrunch only scrolls up and down.

I dunno exactly how limited your effect is, but the intro to Natural Wonders pops into mind. That however is quite limited when it comes to colors etc.

Looking forward to your results! :D
2008-02-21 16:25
Testa
Account closed

Registered: Oct 2004
Posts: 197
so linecrunch scrolls up and down and vsp is left and right?, in that case i used the vsp trick.. and by the way this routine uses normal grafix and sprites so the upper and lower border is closed. this routine scrolls only in the sideborder.....but i still feel proud about this...

thanks for the replys guys!
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