Path: chuka.playstation.co.uk!news
From: "Peter Dollochan" <Peter.Dollochan@btinternet.com>
Newsgroups: scee.yaroze.programming.3d_graphics
Subject: Re: strange results - please me
Date: 25 May 1998 17:23:46 GMT
Organization: PlayStation Net Yaroze (SCEE)
Lines: 72
Message-ID: <01bd8801$161a2940$1e3863c3@default>
References: <35696395.3682283@www.playstation.co.uk>
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Hi Rob,
Your zip file seems to be a bit broke. zipfix gives the test1 dir structure

Pete.

Robert Swan <rs108@mdx.ac.uk> wrote in article
<35696395.3682283@www.playstation.co.uk>...
> Can someone help me on some very wierd effects.
> 
> Ive got a program, that places 627 models in the world, and everything
> is fine. Then, I change some other code, (not related to their
> position or orientation) recompile and run it, and they are all
> slightly out. This may not sound major, but it is. If I can't get past
> this, I may as well stop with my game.
> 
> A bit more info - the models make up the sections of track for a
> racing game (which is why they need to align properly). I have a
> feeling I may be using up to much memory or something (I seem to
> remember someone saying you can only declare so many variables
> globally). Here is what Ive got in my memory -
> 
> 43 tmds (not a problem, I should be able to make about 200)
> array of 627 u_shorts
> array of 100 u_long pointers
> various (about 20 max) other variables, u_long + long
> 627 structures, each of which comprises - GsDOBJ2 GsCOORDINATE2, and 8
> u_shorts.
> 
> Is this way too much? and if so, why does it cause this slight error
> in positioning?
> 
> I also have a feeling that maybe the processor loses the precision of
> my long that is used to position each of the models, again why would
> adding more instructions that dont affect it change its precision?
> 
> Anyway, this is a serious problem, and I beg of people to download my
> file and have a look at the problem. the file is
> 
> http://www.netyaroze-europe.com/~middex2/ftp/HELPME.ZIP
> 
> if you unzip it, you get two directories - test1 is the correct
> version, and test2 the knackered version (to get them to run go into
> CODE directories and do siocons auto)
> 
> you can see the difference between the two by looking at the files
> TRACK.C in the code directory. The first has lines 245 - 253 commented
> out, the second hasn't. The variables im editing on those lines (fs1,
> fe1, fs2, fs2) have nothing to do with the models positions. 
> 
> Id also better explain how to use the 'game'
> 
> up,down,left,right moves you.
> L1, R1 rotate you
> L2, R2 move you up and down.
> circle takes you back to the start (but doesnt orientate you)
> select quits
> square gives an overhead view of the whole track
> 
> the game will work by only drawing sections of track around your
> currect position, but at the moment that hasnt been implemented, so
> you have to tell the computer which pieces of track to draw.
> triangle moves the track forward,
> and cross moves it back. Youll see what i mean when you try it
> 
> Please have a look, Im desperate - I have no ideas about memory and
> stuff.
> 
> Robert Swan
> rs108@mdx.ac.uk
> http://www.netyaroze-europe.com/~middex2
> 
>