rec.autos.simulators

What about RAIN!

Wosc

What about RAIN!

by Wosc » Sun, 28 Feb 1999 04:00:00

have you ever raced at monaco?  I believe there is a hump in the road there,
a fact is completely true, uhh it is a fact that there is no bumps in GPL,
cmon, next time say, there are few bumps, not that it is a fact that there
are NONE.



>>>And it is a fact, there is no such thing in GPL.

>>Fact? My eyes doth deceive me! All that camber, those bumps, those
>>elevations - all products of my fevered imagination.

>Oh boy... Once again, this is *NOT* what I am talking about. That is
>bumps, ripples, you know those things that should force you to modify
>spring/damper/bump *** settings. I know quite well that there are
>track elevations in GPL...geez

>--Tel

Wosc

What about RAIN!

by Wosc » Sun, 28 Feb 1999 04:00:00

nice talking with you greg.  Finally got to an understanding.

Jesse

{Header was intentionally scrambled and then put back together so that it
looks just the way it used to be}

Greg Cisk

What about RAIN!

by Greg Cisk » Sun, 28 Feb 1999 04:00:00


exactly?

Basically what is contained in the quote above . Pironi rear ended prost,
only
their tires touched and this launched him over prost (who thought he was
almost killed in the incident).

--

Header address intentionally scrambled to ward off the spamming hordes.

cisko [AT] ix [DOT] netcom [DOT] com

Tony Whitle

What about RAIN!

by Tony Whitle » Sun, 28 Feb 1999 04:00:00


>Just to set the record straight:  I was not trolling when I posted the
>original post.

Really? You just posted a doubt into this hotbed of fundamentalist GPL'ers
and you're surprised at the response? You'd better check any suspicious
packages you get in the post - oh , and look under your car before you get
in it ;-)

Anyway, to get back to your original question, have you actually tried
driving a sim in the rain? The only one I know of is good old GP1 and I
never got *anywhere* in the rain on that. I'd crank up the downforce to try
and get some grip, only for the AI to leave me for dead down the straights
and still corner faster than me. The reduced visibility was modelled pretty
well, as in you could see practically nothing with another car right in
front of you, but I thought it was a waste of time. Succeeding programmers
seem to agree and drop rain first when the project is running late (skip
this bollocks about the physics being too complicated - Papyrus just wanted
to get the damn thing out the door).

Tony Whitley
Please remove 'spam' to reply.

Ronald Stoe

What about RAIN!

by Ronald Stoe » Mon, 01 Mar 1999 04:00:00


> he is right though, for papy to do weather you need all that stuff, they do
> stuff right when they do it, they wont do a halfassed job like other

What do you call the canned wheel spin in N2. We all are quite happy with it,
as it is the only way to get out of the pits in one piece...

The most realistic flightsims use SOME not so accurate "cheats" to maintain
a needed minimum framerate.

l8er
ronny

--
How to get rid of censorship in German game releases
<http://www.gamesmania.com/german/maniac/freedom/freedom.htm>

          |\      _,,,---,,_        I want to die like my Grandfather,
   ZZZzz /,`.-'`'    -.  ;-;;,_              in his sleep.
        |,4-  ) )-,_. ,\ (  `'-'     Not like the people in his car,
       '---''(_/--'  `-'\_)            screaming their heads off!

Ronald Stoe

What about RAIN!

by Ronald Stoe » Mon, 01 Mar 1999 04:00:00


> Ronald Stoehr wrote
> >Yeah, and they definitely should do a fourier analysis over the specific
> >grip levels of selected tire particles on sub-atom resolution, or something
> >like that...

> lol ;-)

> >Geez, if you have demands like that, the current dry weather physics of GPL
> >should really disappoint you.

> Well people want it correctly done with mathematical physics and dynamic
> weather or canned like some "other" Formula 1 software ?  If Papyrus see
> that presently modeling a accurate dynamic weather is impossible with
> today's hardware, what's the point of creating one botched and canned ?

Well, I loved the way the weather changes in MGPR. And I don't need a live
data feed to some weahter station that controls the weather. It's okay that
the weather changes by calling rand()... ;^)

l8er
ronny

--
How to get rid of censorship in German game releases
<http://www.gamesmania.com/german/maniac/freedom/freedom.htm>

          |\      _,,,---,,_        I want to die like my Grandfather,
   ZZZzz /,`.-'`'    -.  ;-;;,_              in his sleep.
        |,4-  ) )-,_. ,\ (  `'-'     Not like the people in his car,
       '---''(_/--'  `-'\_)            screaming their heads off!

John Walla

What about RAIN!

by John Walla » Mon, 01 Mar 1999 04:00:00


It was at the 1982 German GP in Hockenheim. Prost was out in Saturday
practice, and taking it quite easy (it was torrential rain). Pironi, a
contender for the championship, was out trying to get as much track
time in as possible in case of a wet race, and ploughed into the back
of Pros. His Ferrari was launched over the back of Prost's Renault,
crashed down to earth again on the track and Pironi was badly injured.
He survived the accident, although I don't know if he ever cam back to
F1, but he was killed in a powerboat race in, I think, 1987.
Ironically enough there was talk of an F1 comeback around the time he
was killed.

Cheers!
John

John Walla

What about RAIN!

by John Walla » Mon, 01 Mar 1999 04:00:00


You need to work on your writing clarity - whether or not that's what
you were talking about we can't hear you. We can only ready what you
write.

Bumps are there insofar as they are in any other sim - that is, far
from perfect so far, but well worthy of comparison with anything else
on the market.

Cheers!
John

Graeme Nas

What about RAIN!

by Graeme Nas » Mon, 01 Mar 1999 04:00:00

It was a low-visibility wheel-over-wheel accident. Pironi's crash was
much like his team-mate Villeneuve's at Zolder the same year. He was
very lucky not to suffer the same fate as well.

--
Cheers!
Graeme Nash


http://www.karisma1.demon.co.uk
ICQ# 11257824

1998 Xoom GP2 League Champion

Drake Christens

What about RAIN!

by Drake Christens » Tue, 02 Mar 1999 04:00:00



There's nothing magic about modeling weather effects on a race car.  
Certainly nothing that pushes it beyond the ability of the hardware.

Now, it is different.  You have to worry about hydroplaning, the heating
model is different, etc.  But that doesn't take more processing power.  
It just takes more development time.

Mighty

Remco Moe

What about RAIN!

by Remco Moe » Tue, 02 Mar 1999 04:00:00


>There's nothing magic about modeling weather effects on a race car.  
>Certainly nothing that pushes it beyond the ability of the hardware.

>Now, it is different.  You have to worry about hydroplaning, the heating
>model is different, etc.  But that doesn't take more processing power.  
>It just takes more development time.

Well Drake,

I would think that dynamic grip indeed does add to the need of
processing power.

Remco

Te

What about RAIN!

by Te » Tue, 02 Mar 1999 04:00:00



>You need to work on your writing clarity - whether or not that's what
>you were talking about we can't hear you. We can only ready what you
>write.

<shrug> some here apparantly didn't have such difficulties to
understand what I meant.

You mean track elevations - not bumps in the track surface.

--Tel

John Walla

What about RAIN!

by John Walla » Tue, 02 Mar 1999 04:00:00


"Apparently"? You did take a poll of everyone's comprehension (or
otherwise) of your remark before letting forth this pearl of sweeping
generalisation? No? Bzzzzt, thanks for playing...

No, I mean bumps. B-U-M-P-S - quite different from
E-L-E-V-A-T-I-O-N-S. What Cleaseau might have called "boompee", "ze
trek, at zat point, ken be veree boompee"

Cheers!
John

Drake Christens

What about RAIN!

by Drake Christens » Tue, 02 Mar 1999 04:00:00


says...

> >There's nothing magic about modeling weather effects on a race car.  
> >Certainly nothing that pushes it beyond the ability of the hardware.

> >Now, it is different.  You have to worry about hydroplaning, the heating
> >model is different, etc.  But that doesn't take more processing power.  
> >It just takes more development time.

> Well Drake,

> I would think that dynamic grip indeed does add to the need of
> processing power.

> Remco

I'm not familiar with that term.  Though I can probably guess pretty much
what it means.

Even without understanding it, I'd wager that it's possible to build a
few lookup tables to handle it.  One for each type of tire that takes
into account the water depth, car speed and the angle of incidence.  That
implies some sort of drainage model for the tracks, which would also be
pre-calculated and stored with the track.  None of it sounds too
expensive in processor time.  Just very time consuming for the track and
tire modelers.  And time consuming for the programmers to experiment to
see what needs to be modeled at that detail and what can be fudged with
simple modifiers to what's already there.

Today's machines have so much memory that it can really change the nature
of a problem.  On a flight sim I just worked on, the lead programmer used
SGIs to model the airflow over the airfoils at one-degree increments and
at similarly smooth transitions in airspeed and altitude (don't remember
those increments.)  It took about a week for each airfoil.  All of that
info was stored in some megabyte-or-so tables that are used at runtime.  
The flight sim is Fighter Squadron:Screamin' Demons over Europe (I hate
that name :-) and its flight models are considered very high fidelity.

Obviously, I'm doing a lot of guessing here.  But my contention is that
the bottleneck was probably development time, not processor usage at
runtime.

Mighty

Piers C. Structure

What about RAIN!

by Piers C. Structure » Tue, 02 Mar 1999 04:00:00





> > If Papyrus see
> > that presently modeling a accurate dynamic weather is impossible with
> > today's hardware, what's the point of creating one botched and canned ?

> There's nothing magic about modeling weather effects on a race car.  
> Certainly nothing that pushes it beyond the ability of the hardware.

> Now, it is different.  You have to worry about hydroplaning, the heating
> model is different, etc.  But that doesn't take more processing power.  
> It just takes more development time.

It depends entirley to what degree you wish to model the physics of a
wet track. To model even a single puddle of standing water to any degree
of accuracy would involve calculating it's dispertion should (say) a
fast moveing tyre pass through it. At the other end, you could just add
in some 'fudges' (I would perhaps say more aggregate factoring) such as
you seem to suggest.

For my money GPL is a good product with mostly good compromises in
focus (such as missing out weather (anyone seen a thermometer in GPL, or
wind? (something that was in ICR)) in favor of better things in the
basics). What pappy have done they have done well. As a testbed for
technology which must form the strategic backbone of pappys next
generation of racing sims, it bodes of lurvley succulent little
simulators for our delictation in the future. Mmmmm, yum.

--
Suck The Goat


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