logging distance, speed, acceleration data

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Windows build with two cars and two tracks(I'll upload the patch to github): http://www.gamefront.com/files/20543976/vdrift-log.zip

To run with logging use vdrift-log.bat. It starts vdrift with:

Code:

vdrift -motion-log 30

30 is the sampling frequency. The simulation runs at 90Hz. Thus the sampling frequency is restricted to 1-90Hz. Additionally the sampling period is truncated to be multiple of the simulation time step.

The output is written into log.txt in the executable directory. It contains the forward acceleration, velocity and distance samples in car reference frame.