Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!mips!public!valentin
From: valentin@public.BTR.COM (Valentin Pepelea)
Newsgroups: comp.sys.amiga.programmer
Subject: Re: hardware sprites
Keywords: sprites
Message-ID: <2979@public.BTR.COM>
Date: 7 Jun 91 05:12:04 GMT
References: <19672@csli.Stanford.EDU>
Organization: BTR Communications, Mtn. View, CA
Lines: 25

In article <19672@csli.Stanford.EDU> bratt@csli.Stanford.EDU (Harry Bratt)
writes:
>
>How do you make a hardware sprite disappear without doing FreeSprite() ?

>So - should I be doing GetSprite(), FreeSprite() all over the place?
>Should I be doing a ChangeSprite() to point to a block of 0's?
>Should I MoveSprite() outside the bounds of the ViewPort???
>Could I set the height to 0????????

Do not FreeSprite() like crazy. That function might take too long to execute.
The way I clear the sprite is by ChangeSprite()'ing to a buffer full of 0's.
I could just set the height to 0, but I would have to store the current height
into a temporary variable, and I don't want to waste time doing that.

>and the last 3 sound like kludges to one degree or another.

Not kludges, but choose whatever method suits you best.

Valentin
-- 
"An operating system without virtual memory      Name:      Valentin Pepelea
 is an operating system without virtue."         Phone:     (408) 985-1700
                                                 Usenet:    mips!btr!valentin
                     - Ancient Inca Proverb      Internet:  valentin@btr.com