## tuxracer-devel — Mailing list for Tux Racer developers

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 Re: [tuxracer-devel] Keyboard From: Jasmin Patry - 2000-05-29 17:15:38 ```On Sun, May 28, 2000 at 04:25:13PM +0100, Peter Allen wrote: > I am not sure on the physics yet (I've only done first year 'A' level > physics so far...) (Please comment and say thats not going to work etc) > 1. Tux could stick a leg hard into the snow, and use it a as a pivot. > For practical reasons I think the pivot would need to be a lot further > out that tux's leg, so this wouldn't look 100% realistic. The physics > of this are fine, but I was planning on making it so the pivot could > only take a certain force, so if tux was going faster than that > the pivot would slip, and tux would lose velocity (due to friction). > I can't quite work out the physics of this, despite my best efforts > with the ascii art. It's not easy to do this "correctly" because of the model that's being used. For physics purposes, Tux is modelled as a single particle. This means that torsion on Tux can't be modelled, since the particle is infinitesimally small. A better model would take into account the fact that when Tux's left arm (or foot) is sticking into the ground, the drag on his left side is greater than on his right side; as a result he would turn in that direction. As I see it, there are a couple of options. You could just copy and modify the current turning code so that the magnitude of the frictional force was increased when doing a sharp turn; this probably won't do exactly what you want, but with sufficient tweaking it might come close. The other would be to forgot about implementing this with forces and manually manipulate Tux's velocity and/or position (instead of having it automatically updated by the ODE solver). There might be some gotchas there, though -- I haven't looked at that code in a while so I'm not sure what problems might crop up. (There is also a third option -- implement a better physical model that takes into account angular momentum, etc. -- but that's probably more work than you had in mind. :) Hope this helps, Jasmin -- Jasmin Patry Master's Student, Dept. of Computer Science jfpatry@... http://www.cgl.uwaterloo.ca/~jfpatry/ ```
 Re: [tuxracer-devel] Keyboard From: Peter Allen - 2000-05-28 15:27:26 ```Jasmin Patry wrote: > > ^ velocity > | > | > + Tux > / > / > L frictional force > > The magnitude of the frictional force is also increased to reflect the > fact that drag is increased when Tux puts his hand down (so turning does > slow him down, a little bit). Thats neat.... > For sharp turns, you have a few options. You can play with > calc_net_force and change how the steering part works when a sharp turn > is being performed, I am not sure on the physics yet (I've only done first year 'A' level physics so far...) (Please comment and say thats not going to work etc) 1. Tux could stick a leg hard into the snow, and use it a as a pivot. For practical reasons I think the pivot would need to be a lot further out that tux's leg, so this wouldn't look 100% realistic. The physics of this are fine, but I was planning on making it so the pivot could only take a certain force, so if tux was going faster than that the pivot would slip, and tux would lose velocity (due to friction). I can't quite work out the physics of this, despite my best efforts with the ascii art. The keyboard stuff seems niceley set out so it shouldn't present any difficulties. Thanks for the explanation. Peter Allen ```
 Re: [tuxracer-devel] ASCII Tech Linux in Japan From: Steve Baker - 2000-05-18 20:30:00 ```Jules Bean wrote: > > > Btw, earlier this week I received a copy of "Linux Magazine" from Japan, > > which features a piece on Tux Racer (as part of a Linux game survey). > > I can't read Japanese, but the screenshots looked nice! :) > > Cool. Kudos for all the exposure you're getting! I wouldn't get too excited. That magazine appear to have fired off near-identical queries to just about every Linux game developer. I even got one as developer of TuxKart - which so far is nothing but an empty web site as far as released code goes! It looks like the guy just fired them off to everyone on SourceForge with 'game' in their project description. Still, any publicity is good publicity! -- Steve Baker http://web2.airmail.net/sjbaker1 sjbaker1@... (home) http://www.woodsoup.org/~sbaker sjbaker@... (work) ```
 Re: [tuxracer-devel] ASCII Tech Linux in Japan From: Jules Bean - 2000-05-18 15:00:55 ```On Thu, May 18, 2000 at 09:21:25AM -0400, Jasmin Patry wrote: > > I was also going to post to the list to point out that Satoshi isn't > subscribed to the list (so he didn't get your message); I approved his > message because it was important and I didn't want to risk losing it. It did occur to me that he mightn't be subscribed. If I was really bright, I might have deduced the whole sequence of events. > > > tuxracer is under the GNU General Public License. This means that you > > are absolutely welcome to put it on your CD (encouraged, even!), > > however, you should also include the source code, which is either the > > tuxracer-0.12.1.tar.gz or the tuxracer-0.12.1-1.src.rpm. > > I told him that it would be nice to include the source. However, he > isn't obligated to do so, as long as users are told where to get the > source (and it could be argued that the README includes that > information). True enough. I did only say 'should'. > > Btw, earlier this week I received a copy of "Linux Magazine" from Japan, > which features a piece on Tux Racer (as part of a Linux game survey). > I can't read Japanese, but the screenshots looked nice! :) Cool. Kudos for all the exposure you're getting! -- Jules Bean | Any sufficiently advanced jules@{debian.org,jellybean.co.uk} | technology is indistinguishable jmlb2@... | from a perl script ```
 Re: [tuxracer-devel] ASCII Tech Linux in Japan From: Jasmin Patry - 2000-05-18 13:22:35 ```On Thu, May 18, 2000 at 01:51:34PM +0100, Jules Bean wrote: > Hi there! I'm not an official tuxracer developer, but in case they > are busy, I believe I can answer some of your questions. Thanks Jules. I've already replied in private email (I included my mailing address which I didn't want in the archives) -- of course, I told him that he was free to include Tux Racer on the CD. I was also going to post to the list to point out that Satoshi isn't subscribed to the list (so he didn't get your message); I approved his message because it was important and I didn't want to risk losing it. > tuxracer is under the GNU General Public License. This means that you > are absolutely welcome to put it on your CD (encouraged, even!), > however, you should also include the source code, which is either the > tuxracer-0.12.1.tar.gz or the tuxracer-0.12.1-1.src.rpm. I told him that it would be nice to include the source. However, he isn't obligated to do so, as long as users are told where to get the source (and it could be argued that the README includes that information). > You don't seem to have listed the tuxracer-data file above! This is > rather important, since without it your readers won't have the levels > to play! tuxracer-data-0.12.1-1.noarch.rpm is also available from the > website. Yup, I pointed that out too. Btw, earlier this week I received a copy of "Linux Magazine" from Japan, which features a piece on Tux Racer (as part of a Linux game survey). I can't read Japanese, but the screenshots looked nice! :) Here's a link for anyone that's interested (and can read Japanese :) : http://www.linux24.com/linux/linuxmag/ (I wasn't able to track down an on-line version of the article.) Cheers, Jasmin -- Jasmin Patry Master's Student, Dept. of Computer Science jfpatry@... http://www.cgl.uwaterloo.ca/~jfpatry/ ```
 Re: [tuxracer-devel] ASCII Tech Linux in Japan From: Jules Bean - 2000-05-18 12:52:50 ```On Thu, May 18, 2000 at 02:25:01PM +0900, Satoshi Turuo wrote: > Hi, > Hi there! I'm not an official tuxracer developer, but in case they are busy, I believe I can answer some of your questions. > Right now, we are working on a particular project > with which we would like to ask you for your cooperation. > The title of this project is; > "The COOL Softwares for Linux". > > We would like your permissions to accomodate the given > materials to the CD-ROM of our magazine. > (Linux client and server files for Tuxracer and plug-ins. > [tuxracer-0.12.1-1.i386.rpm, tuxracer-create-level.scm > tuxracer-save-as-rgbs-1.0.scm, tuxracer-load-level-1.1.scm > tuxracer-save-as-rgbs-1.1.scm]) tuxracer is under the GNU General Public License. This means that you are absolutely welcome to put it on your CD (encouraged, even!), however, you should also include the source code, which is either the tuxracer-0.12.1.tar.gz or the tuxracer-0.12.1-1.src.rpm. You don't seem to have listed the tuxracer-data file above! This is rather important, since without it your readers won't have the levels to play! tuxracer-data-0.12.1-1.noarch.rpm is also available from the website. The .scm files are GIMP scripts, copyrighted by Ingo Ruhnke, but they are also under the GPL, and since they are their own source files, there are no other requirements there. I wish you luck with your article! Jules Bean -- Jules Bean | Any sufficiently advanced jules@{debian.org,jellybean.co.uk} | technology is indistinguishable jmlb2@... | from a perl script ```
 [tuxracer-devel] ASCII Tech Linux in Japan From: Satoshi Turuo - 2000-05-18 05:25:24 ```Hi, My name is Satoshi Turuo, and I'm an editor of Linux information magazine, called "TECH Linux", ASCII Corp in Japan. "TECH Linux" is Linux Magazine for Japanese LINUX Gamers, Newbie LINUX Game Programmers. Newest issue comes with 2 CD-ROMs that loaded with Playabledemos, FreeSoftwares, Sharewares, product advertisements. Right now, we are working on a particular project with which we would like to ask you for your cooperation. The title of this project is; "The COOL Softwares for Linux". We would like your permissions to accomodate the given materials to the CD-ROM of our magazine. (Linux client and server files for Tuxracer and plug-ins. [tuxracer-0.12.1-1.i386.rpm, tuxracer-create-level.scm tuxracer-save-as-rgbs-1.0.scm, tuxracer-load-level-1.1.scm tuxracer-save-as-rgbs-1.1.scm]) If you are interested in the project, please contact me as soon as possible. Actually, deadline of this project is staring us in the face, so I am desperately waiting for you to give the answer back. Thank you very much. If you have any question about TECH Linux or if you send your reply, please contact : Satoshi Turuo satosh-t@... TECH Linux ASCII CORPORATION. TOKYO, JAPAN. ```
 Re: [tuxracer-devel] New tunes for Tux Racer From: Jasmin Patry - 2000-05-06 17:22:32 ```On Tue, May 02, 2000 at 02:05:14PM -0400, Joseph Toscano wrote: > Allo. The tunes will keep rolling in, of course. ;) Here are two I came > up with recently. > > http://www.zeal-music.com/tuxracer-music.tar.gz -- (that's the entire > archive of tunes, 355k) > > tuxrce-4.it is an in-game song, and tuxrce-5.it is to be played when you > win/finish the race. Very cool! Thanks a lot. > Also, if any "specific" music is needed, do tell. Even if you'd prefer a > certain style of music, I'd be willing to integrate it into my upcoming > tunes. And by "specific" I mean, do you need more tunes for winning the > race/losing the race, etc? Just let me know. Hmm, perhaps it would be nice to have a song to play when you "lose" a race -- i.e., don't get a good enough time/score to go to the next race. That's all I can think of for now, though. Cheers, Jasmin -- Jasmin Patry Master's Student, Dept. of Computer Science jfpatry@... http://www.cgl.uwaterloo.ca/~jfpatry/ ```
 [tuxracer-devel] New tunes for Tux Racer From: Joseph Toscano - 2000-05-02 18:14:35 ```Allo. The tunes will keep rolling in, of course. ;) Here are two I came up with recently. http://www.zeal-music.com/tuxracer-music.tar.gz -- (that's the entire archive of tunes, 355k) tuxrce-4.it is an in-game song, and tuxrce-5.it is to be played when you win/finish the race. Also, if any "specific" music is needed, do tell. Even if you'd prefer a certain style of music, I'd be willing to integrate it into my upcoming tunes. And by "specific" I mean, do you need more tunes for winning the race/losing the race, etc? Just let me know. --JT (www.lionking.org/~scarjt) . . . . . . . . . . . . . . you and me, we're in this together now none of them can stop us now we will make it through somehow you and me; if the world should break in two until the very end of me. . . until the very end of you. ```

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