Thanks for your input Steve. I've now implemented a sort on my sprite
batch based on the y pos and height of the sprite (ie the z-order is
based on the feet position of my sprites). Just need to add some
collision detection and I can move on the the next chunk of code.



A qsort is very fast and is therefore ideal to be run every frame. In
our console games, we use a qsort on a list of hundreds of 3D objects
every frame and it doesn't rate anywhere near the top of our
most-expensive-functions list.

Steve 'Sly' Williams
Lead Programmer
Krome Studios


From: "Ian" < ian.munro@...
<mailto:ian.munro%40grosvenortechnology.com> >
<mailto:delphigames%40yahoogroups.com>

That sounds reasonable. My next problem would be when to resort the
list. As I'm not showing many sprites I guess I could sort the list
every frame but its not very efficient. I'd like to only sort the list
when required. Anyone any ideas or am I approaching this in the wrong
way ?

From: xiaorang@... <mailto:xiaorang%40263.net>
[mailto:xiaorang@... <mailto:xiaorang%40263.net> ]

the Y-coord plus the height of the sprite make the z-order.

----- Original Message -----
From: "Ian" < ian.munro@...
<mailto:ian.munro%40grosvenortechnology.com> >

I'm developing a 2d game that requires the sprites to be z-order
sorted but am not surehow to go about doing this.

.

<http://geo.yahoo.com/serv?s=97359714/grpId=406/grpspId=1705006764/msgId
=7592/stime=1223417910/nc1=4507179/nc2=3848640/nc3=5379228>


This email is intended solely for the person to whom it is addressed and may
contain confidential or legally privileged information. If you are not the
intended recipient, be advised that you have received this email in error and
that any use, dissemination, forwarding, printing or copying of this email is
strictly prohibited. Please notify the author by replying to this email and
destroying all copies of the email and attachments. Access to this email by
anyone else is unauthorised.

Email may be susceptible to data corruption, interception, unauthorised
amendment, viruses and delays or the consequences thereof. Any views or opinions
presented are solely those of the author and do not necessarily represent those
of Grosvenor Technology Ltd.

Grosvenor Technology Ltd. (incorp. Newmark Technology Ltd.) is a company
registered in England with company number 2412554.
The Grosvenor Technology Ltd. Registered Office address is Millars Three,
Southmill Road, Bishop's Stortford, Herts, CM23


[Non-text portions of this message have been removed]