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From: keithd@cadovax.UUCP (Keith Doyle)
Newsgroups: comp.sys.amiga
Subject: Re: sprites
Message-ID: <1770@cadovax.UUCP>
Date: Mon, 28-Sep-87 13:37:25 EDT
Article-I.D.: cadovax.1770
Posted: Mon Sep 28 13:37:25 1987
Date-Received: Wed, 30-Sep-87 04:20:41 EDT
References: <3933@zen.berkeley.edu> <2450@batcomputer.tn.cornell.edu>
Reply-To: keithd@cadovax.UUCP (Keith Doyle)
Organization: Contel Business Systems, Torrance, CA
Lines: 28

In article <2450@batcomputer.tn.cornell.edu> hsgj@tcgould.tn.cornell.edu (Dan Green) writes:
>In article <3933@zen.berkeley.edu> bryce@hoser.berkeley.edu (Bryce Nesbitt) writes:
>>>I've got a small problem with my sprites, and maybe someone knows the cause.
>>>When I run programs like Sproing! or PacMan87 instead of just the normal
>>>sprites, tall verticle lines attatched to the sprite appear along with some
>>>garbage that move along with the sprites.  They are just "flaked out."
>>>[why?]

Before you decide your machines are broke, first go into preferences and
adjust the screen centering to be as far to the right as you can, and see
if the problem goes away.  My favorite example, is if you run Leo's 'oing'
to get the bouncing ball sprites, and while it's running go into
preferences, you can make one of the balls break up if you move the screen
to the left a bit.  I found this somewhat of a pain, as when I adjust
preferences to be 'centered' with regards to any of the video gear I
have, some sprites break up.  I found it interesting that the default
preferences setting seems to be a bit too much to the right when you 
look at it with standard video (i.e. your T.V.).  Could be that is the
only way they could make enough room for the sprite DMA.

Oh well, not that much good stuff actually makes much use of sprites
anyway.  (ever since I got my Amiga, I stopped playing games, as the
rest of the stuff is so much more fun!)  Certainly any Video-oriented 
utilities ought to stay away from them if they expect to do useful stuff 
either in overscan or even just when correctly centered.

Keith Doyle
#  {ucbvax,decvax}!trwrb!cadovax!keithd  Contel Business Systems 213-323-8170