Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!mips!apple!motcsd!starnet!sschaem
From: sschaem@starnet.uucp (Stephan Schaem)
Newsgroups: comp.sys.amiga.programmer
Subject: Re: Sprite Animation Glitches
Message-ID: <1991May1.205402.14731@starnet.uucp>
Date: 1 May 91 20:54:02 GMT
References: <y6i511w164w@ersys.uucp>
Organization: Starnet-Public Access UNIX-Los Altos,CA 415-949-3133, login:info
Lines: 19


 WaitTof dont give you the maximum time.You should wait at the screen
 bottom position, I think getting vp_DyOffset + sc_Height should work.
 And you should have the highest priority, since if you 'want' to do a
 copy you need to be syncronized with the display.
 If you are in Intuition environment, use a UserCopperlist to set your
 sprite adr and position... This supose you will not use gfx.library
 sprite function.And by doing this the system will calculate the start
 position of your screen and add that to your waits... (If you enable
 you screen to be scrolled!)

 So Make all your images has a sprite 'structure' and simply copy the
 position of the previews sprite into the next sprite animation frame.

 I actually dont do it like that since I dont use the 'system' dma, but
 if you manage to set the sprite adr before the 'system' dma reads it
 everything should animate smothly...

							Stephan.