Path: chuka.playstation.co.uk!news From: Developer Support Newsgroups: scea.yaroze.programming.2d_graphics,scee.yaroze.programming.2d_graphics Subject: Re: Scrolling without BG ?? Date: Wed, 28 May 1997 09:37:13 +0100 Organization: Sony Computer Entertainment Europe Lines: 30 Message-ID: <338BEEB9.47F9@interactive.sony.com> References: <5mgje6$shk7@scea> Reply-To: N/A-Use-Newsgroup NNTP-Posting-Host: 194.203.13.10 Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 3.01 (Win95; I) Xref: chuka.playstation.co.uk scea.yaroze.programming.2d_graphics:67 scee.yaroze.programming.2d_graphics:100 George Bain wrote: > > Is it possible to scroll a background without BG? What I'am trying to do > on the PlayStation is scroll two 160*240 images...just a simple wrap around. > I tried some things out but I loose the image when I wrap around. The image > would be useless to break down into 16*16 tiles so I need another way. > If this is not possible or anyone know of hints or tricks please let me know. > > P.S. Does anyone...anyone..know how to use the system timers? > > Latah.... > > George Bain Scrolling sprites: the demo flying\tuto18 has a 'starfield' just made of two sprites. Basically, you just move them left and right as the view twists clockwise and anticlockwise, testing the sprites to see if they've fallen off-screen and repositioning them if they have. - Why do you lose the image when you wrap around? Try printing where the sprites are and repositioning. As regards timers, we're working on them. Lewis