Where's the love for SamH?
Can I have some SamH signed underpants?
Can I have some SamH signed underpants?
Especially with the word legal in inverted commas... you might consider re-editing that, Victor. 
But yeah, good to see it'll be up and running soon. I'd be proud to wear the LFS logo on a T-shirt, just because of you guys' approach to the whole project.
you might consider re-editing that, Victor. But yeah, good to see it'll be up and running soon. I'd be proud to wear the LFS logo on a T-shirt, just because of you guys' approach to the whole project.
It's just the stupid virus again guys. Don't fall for it. This should get locked and deleted before anyone downloads it.
Hehe, I remember those years. I now get in two hours a week if I'm lucky. It's nice to have free time, put it to good use while you can but be responsible and don't overdo things.
Not necessarily because a formula is just as predetermined.
Take the function f(x) = 3x^2
No matter how many times you find f(5), it will always return the same value, but say you have something along the lines of:
f(x) = e^3x + cos x/3pi + ln (x^2) + ... + 3tanh 10x etc.
Your CPU is going to go insane if you tell it to do that 500 times a second among other things. so just compile a table of values, load it into RAM and voila! Suddenly it runs fine and it's not much less accurate either if the steps between your values aren't big. The reason why ISI's engine is rubbish is because most of the things thrown in there aren't real quantities and on top of that, the things that are are rubbish data anyway. (Yes, I can say this for a fact, no, I can't show you how I know this stuff or what it's meant to be)
On the other hand, if you go and do a CFD model (stuff that runs no-where near real time) for aerodynamics and chuck all the data from that into tables of values and then use that in real time from your sim, you'd get some really good results.
duke_toaster, sometimes you are pretty dumb. LFS S2 is an S1 mod LOL. ther4 S2 si teh suckeh. Some basic logic is needed to understand that.
Have you ever done any coding? I'd guess not... re-using old, good code is always a good thing, just throw the garbage away. And even you have, judging by your age, your style is probably far from half-decent so with every program you write, your style gets better. When you see a better way of doing something, obviously you'd want to throw the old stuff away. But the guys that coded GPL and NR2003 already had well developed styles the first time so now, updating their code is a smooth and easy process.
Your definition of mod is also pathetic because mod implies that the physics model hasn't changed and in this case it has. I guess it's you that fails at logic.
[I removed the bit about the tyre model because that's pretty much true]
Far from it. What the iRacing guys are implying is that they test every car in a virtual wind tunnel (ie. Computational Fluid Dynamics are used to calculate air velocity and pressure and temperature and density and whole bunch of other factors for very small blocks of space, allowing an accurate calculation of coefficient of drag). That can't be done anywhere near real time. So this data is then used to either drive a table-driven model (similar to ISI except with real quantities and data) or a mathematical model.
On the other hand, LFS takes a physics approach but this kind of physics can only be so accurate in real time so it's merely flat plate calculations for the wings and a drag coefficient and air velocity (based on car velocity and wind) and density (based on slipstream) calculation for the drag of the body and wings. The body doesn't produce any lift or downforce in LFS, nor does the diffuser and ground effect is not taken into account. Yaw changes are also inaccurately modeled, it's just a different angle of attack for the flat plate calculations for the wings, I'd guess. Pitch changes are modeled.
For all your smooth typing, you'd best learn that you don't know everything - actually your knowledge is a minuscule portion of the combined knowledge of the world (same goes for just about everybody) and you should therefore tone down your language because it's not appropriate when you don't know much on the subject. I know, because I've been through that stage.
Have you ever done any coding? I'd guess not... re-using old, good code is always a good thing, just throw the garbage away. And even you have, judging by your age, your style is probably far from half-decent so with every program you write, your style gets better. When you see a better way of doing something, obviously you'd want to throw the old stuff away. But the guys that coded GPL and NR2003 already had well developed styles the first time so now, updating their code is a smooth and easy process.
Your definition of mod is also pathetic because mod implies that the physics model hasn't changed and in this case it has. I guess it's you that fails at logic.
[I removed the bit about the tyre model because that's pretty much true]
Far from it. What the iRacing guys are implying is that they test every car in a virtual wind tunnel (ie. Computational Fluid Dynamics are used to calculate air velocity and pressure and temperature and density and whole bunch of other factors for very small blocks of space, allowing an accurate calculation of coefficient of drag). That can't be done anywhere near real time. So this data is then used to either drive a table-driven model (similar to ISI except with real quantities and data) or a mathematical model.
On the other hand, LFS takes a physics approach but this kind of physics can only be so accurate in real time so it's merely flat plate calculations for the wings and a drag coefficient and air velocity (based on car velocity and wind) and density (based on slipstream) calculation for the drag of the body and wings. The body doesn't produce any lift or downforce in LFS, nor does the diffuser and ground effect is not taken into account. Yaw changes are also inaccurately modeled, it's just a different angle of attack for the flat plate calculations for the wings, I'd guess. Pitch changes are modeled.
For all your smooth typing, you'd best learn that you don't know everything - actually your knowledge is a minuscule portion of the combined knowledge of the world (same goes for just about everybody) and you should therefore tone down your language because it's not appropriate when you don't know much on the subject. I know, because I've been through that stage.
It's not that bad in the more civilized parts of Africa, but even here, in SA which is meant to be the best Africa has to offer, it's not that great. Still, I don't think it's something for Bush to interfere in.
Richard, just a question, how much real motorsport experience do you have? Whilst I do agree with you on many points, I'm almost sure that you've no idea what driving a sliding F1 car feels like. And I'm almost sure that you don't know enough about tyre physics and aerodynamics to make a good educated guess. If you do, please feel free to correct me, but otherwise you're taking your guesses a bit far. I see almost nothing wrong with the sliding F1 car's behaviour. That's not because I'm a blind fanboy either, I do have a fair share of research to back what I'm saying here, though I can't share it.
You should turn on HVS, it will make a substantial difference in FPS. As for that suggestion, that's something directed at Scawen which will allow people to use Software Vertex Shading - you can't do anything to turn that on until support is added.
Loads of valid points, as usual, Richard. I think people who have spent a lot of time with LFS have learned to live past its flaws and still enjoy it. I'm really looking forward to the work to come in the not-too-distant future though because it looks like it will be addressing some of the issues you described. I must say, I'm not spending much tiime at all on LFS lately - mostly because of lack of free time but also because of some of the things you mentioned.
I can't really understand your lack of development point though. LFS is developing quite quickly considering the size of the dev team. The fact that Eric's latest work doesn't appear in any of the compatible patches is surely part of the reason for what you think. Another would be the fact that Scawen has mostly worked on polishing off things insignificant to the overall experience in the past year - I see it as preparation for a massive physics push though.
I think people who have spent a lot of time with LFS have learned to live past its flaws and still enjoy it. I'm really looking forward to the work to come in the not-too-distant future though because it looks like it will be addressing some of the issues you described. I must say, I'm not spending much tiime at all on LFS lately - mostly because of lack of free time but also because of some of the things you mentioned.I can't really understand your lack of development point though. LFS is developing quite quickly considering the size of the dev team. The fact that Eric's latest work doesn't appear in any of the compatible patches is surely part of the reason for what you think. Another would be the fact that Scawen has mostly worked on polishing off things insignificant to the overall experience in the past year - I see it as preparation for a massive physics push though.
Last edited by axus, .
Woah. That's just so awesome. By far the coolest thing in this section of the forum for a while
You know, I'm on the verge of never ever coming to this forum again. This place is getting worse by the week. There's one good thread in 30 if you're lucky and spam is flying everywhere and there's crap like this everywhere. *pukes*
There's the direct link in Scawen's first post in this thread.
My post wasn't directed at yours - merely at someone else's poorly typed, presumptuous post.
Oh, enough already. Chances are it was something else. The devs have a very strict policy regarding mirrors, I recall contacting Victor about an SA mirror and he said that he wouldn't put it on the main site because it required you to register. Filefront is not better either. The general idea is to have as many mirrors as possible, if someone offers a good mirror, the devs would obviously accept the offer and link it on the main site. :doh:
Well, tough. You're just not gonna get them because the sound engine has made a step forward. There is no way that for one person (most people are happy with the changes), Scawen will reverse the patch. Suck it up. Life can be a bitch (and it gets much worse than getting an LFS sound patch that's made a step backwards in your eyes), the sooner you learn that, the better. It's not like LFS will sound like this forever anyway.
Nice! Much better than the first release. When you start work on FE, do you think you could make the grass properly green? I never liked the general colour of LFS grass, it's too yellowy and if any track should have fresh looking grass, that'd be FE.
If you're taking a course specifically in D.Es, I can't see the equation I posted being a challenge.
The driver of an LX4 presses the throttle until 9000rpm is reached and quickly releases it. A particular point's y-coordinate on the exhaust vibrates in such a way that it satisfies the differential equation:
(d^2y/dt^2) - (dy/dt) - 2y = 10 sin t
Where t is in ms after the release of the throttle and y is mm relative to the rest position of the exhaust. Determine the solution for y which remains finite as t -> infinity given that x = 4 when t = 0.
(d^2y/dt^2) - (dy/dt) - 2y = 10 sin t
Where t is in ms after the release of the throttle and y is mm relative to the rest position of the exhaust. Determine the solution for y which remains finite as t -> infinity given that x = 4 when t = 0.
Have you guys maybe downloaded corrupt archives? Maybe try re-downloading? It worked fine here. Thanks again for the patch, Scawen .
.I know this would be way too much work (I think) for these patches but it would be nice if a live telemetry system could be coded, including the RAF data as well as tyre temps and whatever other information you feel is realistic to supply in real time. Combined with some way to change strategy from an external program, I imagine this will put big smiles on the enduro guys' faces. As I say though this is more of a "one day when there's time to polish off things more" thing I think.
As I say though this is more of a "one day when there's time to polish off things more" thing I think.FGED GREDG RDFGDR GSFDG