speed-dreams/speed-dreams-code
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Improvements to Asr (acceleration slip aid)

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git-svn-id: https://svn.code.sf.net/p/speed-dreams/code/trunk@3518 30fe4595-0a0c-4342-8851-515496e4dcbd

Former-commit-id: f2f5272feebe799c9447af7bfa53be0c9bf7e028
Former-commit-id: e37adf9502195a92c87915d833c79d4325cb9501
This commit is contained in:
andrewsumner 2011-04-28 23:56:59 +00:00
parent f13348cc47
commit ae909b7057
1 changed files with 18 additions and 2 deletions
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20
src/drivers/human/human.cpp
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@ -1025,8 +1025,24 @@ common_drive(const int index, tCarElt* car, tSituation *s)
car->_wheelRadius(FRNT_LFT) / 2.0;
break;
case eRWD:
drivespeed = (car->_wheelSpinVel(REAR_RGT) + car->_wheelSpinVel(REAR_LFT)) *
car->_wheelRadius(REAR_LFT) / 2.0;
// ADJUSTMENTS TO RWD Asr:-
// Originally this purely returned the speed of the wheels, which when the speed of
// the car is subtracted below provides the degree of slip, which is then used to
// reduce the amount of accelerator.
//
// The new calculation below reduces the degree to which the difference between wheel
// and car speed affects slip, and instead looks at the SlipAccel and SlipSide values,
// which are more important as they signify an impending loss of control. The SlipSide
// value is reduced the faster the car's travelling, as usually it matters most in the
// low to mid speed ranges.
drivespeed = (((car->_wheelSpinVel(REAR_RGT) + car->_wheelSpinVel(REAR_LFT)) - 30) *
car->_wheelRadius(REAR_LFT) +
-(car->_wheelSlipAccel(REAR_RGT)) +
-(car->_wheelSlipAccel(REAR_LFT)) +
fabs(car->_wheelSlipSide(REAR_RGT) * MAX(8, 80-fabs(car->_speed_x))/4) +
fabs(car->_wheelSlipSide(REAR_LFT) * MAX(8, 80-fabs(car->_speed_x))/4))
/ 2.0;
break;
}