headers
Fahim Imaduddin Dalvi | 15 Feb 2011 10:03
Picon

Inaccurate Physics?

Hey,

I observed a few things about the control of the cars in torcs, that I 
feel are not accurate representation of the real world counterparts:

1) If we turn the wheel to any side and accelerate at the same time, the 
car moves very slowly, and acceleration appears to be very close to 
zero. This is definitely not realistic behavior, as the car would 
accelerate and spin out, rather than not accelerate at all.

2) If we are using Manual Transmission , and we hold the clutch and 
accelerate all the way out, on releasing the clutch, the tyres connected 
to the engine to spin rapidly(a.k.a. Burnout), but this is not the case. 
The physics do seem realistic in this case, so only a visual 
representation is missing.

3) If we were to go over Gravel/Grass, our car spins out at a very, very 
fast rate. This in my opinion is not realistic(I do not have experience 
in this regard, but the car would definitely not spin out as soon as the 
tyres touch the ground).

The above observations were made using the latest stable version of 
TORCS(1.3.1), and using an analog controller. The simulator does have a
very good feel to it, and probably has a very bright future!

Regards,
Fahim

------------------------------------------------------------------------------
The ultimate all-in-one performance toolkit: Intel(R) Parallel Studio XE:
(Continue reading)

Permalink | Reply |
headers
Enrico Mattea | 15 Feb 2011 13:33
Picon
Favicon

Re: Inaccurate Physics?

Il 15/02/2011 10:03, Fahim Imaduddin Dalvi ha scritto:
> Hey,
>
> I observed a few things about the control of the cars in torcs, that I
> feel are not accurate representation of the real world counterparts:
>
> 1) If we turn the wheel to any side and accelerate at the same time, the
> car moves very slowly, and acceleration appears to be very close to
> zero. This is definitely not realistic behavior, as the car would
> accelerate and spin out, rather than not accelerate at all.
>
> 2) If we are using Manual Transmission , and we hold the clutch and
> accelerate all the way out, on releasing the clutch, the tyres connected
> to the engine to spin rapidly(a.k.a. Burnout), but this is not the case.
> The physics do seem realistic in this case, so only a visual
> representation is missing.
>
> 3) If we were to go over Gravel/Grass, our car spins out at a very, very
> fast rate. This in my opinion is not realistic(I do not have experience
> in this regard, but the car would definitely not spin out as soon as the
> tyres touch the ground).
>
> The above observations were made using the latest stable version of
> TORCS(1.3.1), and using an analog controller. The simulator does have a
> very good feel to it, and probably has a very bright future!
>
> Regards,
> Fahim
>
> ------------------------------------------------------------------------------
(Continue reading)

Permalink | Reply |
headers
Fahim Imaduddin Dalvi | 19 Feb 2011 18:05
Picon

Re: Inaccurate Physics?

On 02/15/2011 03:33 PM, Enrico Mattea wrote:
> Hi Fahim,
>
> 1) Are you sure that you have disabled ASR? Because that is the system 
> that automatically controls throttle and decreases it in order to keep 
> wheels adherence. Check your keys definition to find out how to work 
> with it.
> 2) Probably the same as for 1)?
> 3) Well, this depends on how you pass from the asphalt to the 
> ground/grass, and at what speed you do so... check out
> http://www.youtube.com/watch?v=7kigMzmoyDY&feature=fvsr
> as an example.
>
> Cheers,
> Ocirne

Hey Ocirne,

Disabling ASR did change the way the car accelerates out. The wheels 
still dont spin out if the clutch is held and released on full 
acceleration. The car control is also much harder with ASR disabled, 
probably a realistic feature. The car spinning out still seems pretty 
unrealistic to me, as Even If I move out slowly on the gravel, my car 
spins out of control!

Thanks for the help anyways,

Regards,
Fahim
(Continue reading)

Permalink | Reply |

Gmane