Path: chuka.playstation.co.uk!news
From: "Martin Swaine" <martin@lightwork.co.uk>
Newsgroups: scee.yaroze.programming.2d_graphics
Subject: Animating sprites
Date: 8 May 1998 20:06:26 GMT
Organization: Lightwork Design
Lines: 20
Message-ID: <01bd7ac4$e4eda480$7397989e@antonio.lightwork>
NNTP-Posting-Host: lightwk.demon.co.uk
X-Newsreader: Microsoft Internet News 4.70.1162

Hi,

Can anyone help please?

I am developing a demo in which a sprite is moved along a spline curve. The
co-ordinates are precalculated so the program only needs to keep redrawing
the sprite at these positions.

To keep the thing fast the distance between each consecutive instance of
the sprite is quite large. The problem is I am seeing a trail of several
dimmer copies behind the current sprite. 

I have reduced the brightness of the object in case the screen phospher was
not decaying fast enough. I am using the standard sequence of
Vsync/Drawsync and other drawing primitives.

Has anyone else ever seen this? What might I be doing wrong?

Thanks,
Martin