rec.autos.simulators

Car physics; Baraff's time reversing?

Ruud van Ga

Car physics; Baraff's time reversing?

by Ruud van Ga » Thu, 18 Oct 2001 21:18:28

On Tue, 16 Oct 2001 20:48:40 +0200, "sudesh"


>and don't forget the heisenberg compensators!

It's in there and I drink it every day. That's how I get more
productive. ;-)

Ruud van Gaal
Free car sim  : http://www.racesimcentral.net/
Pencil art    : http://www.racesimcentral.net/

Sebastien Tixie

Car physics; Baraff's time reversing?

by Sebastien Tixie » Thu, 18 Oct 2001 21:22:02

At work now with have aprox. 4 graphist for 1 developer ! But the more complicated for the

graphist/modelers is to understand the "weird" developer graphics constraint ;o) Usually
they
used too much stufff... ;o) especially very big texture the little logo decal on the car
;o)))))

--
Sebastien TIXIER - Game Developer
Dynamics and Car Physics
http://www.eden-studios.fr
GPLRank Normal:-44.24 Monster:-124.44

Ruud van Ga

Car physics; Baraff's time reversing?

by Ruud van Ga » Thu, 18 Oct 2001 22:05:13

On Wed, 17 Oct 2001 14:22:02 +0200, Sebastien Tixier


>> Sometimes I pity the poor track creators who have to make more & more
>> content, because well, getting 100fps means you have too little to do.
>> ;-)

>At work now with have aprox. 4 graphist for 1 developer ! But the more complicated for the

>graphist/modelers is to understand the "weird" developer graphics constraint ;o) Usually
>they
>used too much stufff... ;o) especially very big texture the little logo decal on the car
>;o)))))

Lol, I know the thing. You ask for a little button that can light up
and you get a 723x853 file with the buttons just randomly placed
somewhere in the picture and 95% empty pixels. :)

Ruud van Gaal
Free car sim  : http://www.marketgraph.nl/gallery/racer/
Pencil art    : http://www.marketgraph.nl/gallery/

Ruud van Ga

Car physics; Baraff's time reversing?

by Ruud van Ga » Thu, 18 Oct 2001 22:12:16

On Tue, 16 Oct 2001 19:42:47 +0200, Sbastien Tixier


>A class what's this ? i Code in C... don't like C++, it's too much compiler
>dependant, and it create too much hidden local variables, especially when
>surchaging operator functions.

Yes, for performance you mustn't take over too much code from others.
:) I know the matrix and vector classes where every a+b turns into 1
big slow stack fest.
Still, C++ has much merits and I would recommend it even, just don't
use templates too much, never use multiple inheritance (if you ever
made a compiler, you'd know what pain this gives you when mixing 2
class hierarchies), and avoid most operator overloading. And oh yeah,
never malloc() in time-critical code.

And then, it's nice to be able to code like you do in C, only in
reverse:
CarMove(car,x,y) -> car->Move(x,y)

Ah ok, I see, I'll have to see if my ODEs (have never done a survey of
which there are in Racer) map out so nicely to needing just pos & vel
(if I don't need to restore other variables as well).

I see. Something to see if it will fit here.

...

Glad to see you got it working.

Let me know if you see anything in it. :)

Ruud van Gaal
Free car sim  : http://www.marketgraph.nl/gallery/racer/
Pencil art    : http://www.marketgraph.nl/gallery/


rec.autos.simulators is a usenet newsgroup formed in December, 1993. As this group was always unmoderated there may be some spam or off topic articles included. Some links do point back to racesimcentral.net as we could not validate the original address. Please report any pages that you believe warrant deletion from this archive (include the link in your email). RaceSimCentral.net is in no way responsible and does not endorse any of the content herein.