Path: chuka.playstation.co.uk!scea!peter_alau@playstation.sony.com
From: jamin1@psu.edu (Jamin Frederick)
Newsgroups: scee.yaroze.beginners
Subject: Re: Getting a sprite to leave a trail
Date: Thu, 04 Jun 1998 14:51:09 GMT
Organization: SCEA News Server
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References: <356C9B7A.C18CCEE4@easynet.co.uk> <3575d677.88041597@news.scea.sony.com> <3575E6F5.9440E0E6@netmagic.net>
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Pretty cool.  I guess the best time to use this technique is when
there is nothing changing about the sprite that's being sorted.  For
instance, there's no need to do this with moving/scaling/coloring game
objects, since you have to store certain state information SOMEWHERE,
and it might as well be the sprite struct.

Jamin

On Wed, 03 Jun 1998 17:14:45 -0700, Elliott Lee <tenchi@netmagic.net>
wrote:

>This is how I do tiled backgrounds.  :)  e.g. tiling with 32x32
>sprites:
>
>		...
>
>	GsSPRITE blah;
>	#define	SPRITE_HEIGHT 32
>
>		...
>
>	for( x=0; x<320 x+=SPRITE_HEIGHT )
>	  for( y=0; y<240; y+=SPRITE_HIEGHT )
>	    {
>	    blah.x=x;
>	    blah.y=y;
>	    GsSortFastSprite(&blah,&WorldOT[activeBuff],0);
>	    }
>
>It is as fast as can be.  You should only have 1 GsSPRITE per 
>TIM in memory.  There's no point in keeping more around since it
>just consumes memory.
>
>Jamin Frederick wrote:
>> 
>> This reminds me of someone who was getting more than one sprite
>> to display with only one sprite struct.  He would sort the sprite,
>> then change the sprite position and sort it again.  If this could be
>> done often enough, it would save a lot of memory, as opposed to an
>> individual struct for each sprite on the screen...
>> 
>> Jamin
>> 
>> On Thu, 28 May 1998 00:02:25 +0100, "Ï<ò" <philg@easynet.co.uk> wrote:
>> 
>> >Hello all
>> >
>> >Could anyone give me some clues on how to get a moving sprite leave a
>> >trail behind it? Would I need a new sprite for each bit of the trail,
>> >each with its own level of brightness, to give the impression of the
>> >trail fading away?
>> >
>> >Also, any hints on doing other special effects such as screen dissolves,
>> >melts, morphs etc would be greatly appreciated.
>> >
>> >Thanks
>> >
>> >Phil
>> >
>
>-- 
>- e!
>  tenchi@netmagic.net
>  http://www.netmagic.net/~tenchi/yaroze/