Working vehicle simulation ("proof" implementation)

Hello,

I am working on a driving simulator for my master thesis, so as the first step i started looking for existing examples and found this nice implementation of user "proof" viewtopic.php?f=6&t=14031

I have integrated and compiled it in one single visual studio project so other users may use it aswell.

NxOgre and critter Version: buggyswires

you can watch the video of it in action here:
http://www.youtube.com/watch?v=-evx87UDRgo

finally here is the project solution(VS 2008):
http://www.gjteam.com.br/vehicleMestrado.rar

lately I have been playing around with some values and watching the result.

Here is my todo list:

.Make the vehicle stop progressively when its not accelerating , right now the vehicle keeps sliding ad infinitum.
.Get the vehicle velocity (body->getLinearVelocity().magnitude will do?)
.Create some real road!
.Play with different values to represent other vehicles, not just sport cars

the great problem now, is that nxwheel is a blackbox class and its more like play and experiment thing..

Any help is appreciated

Very nice!

.Make the vehicle stop progressively when its not accelerating , right now the vehicle keeps sliding ad infinitum.

Play around with Friction; the Tire Description classes specifically. Possibly air resistance too; although it would be easy enough to model the car as sphere and just apply a force that way. Wikipedia/HyperPhysics will help you out.

.Get the vehicle velocity (body->getLinearVelocity().magnitude will do?)

Yep.

Hi, it working well, but seems it rotating wrong...
Car use for steering rear wheels, but visually rotating front wheels.

any suggestions? should i upload youtube video?

using BuggySwires (Sparked) 1.7 and Ogre (Cthugha) 1.7.2

have you solved you problem? im picking the vehicle implementation again, and will try to solve the remaining issues

sorry for the delay

hi, solve rotation.

vehiclewheel.cpp
VehicleWheel::update
fix
z.FromEulerAnglesXYZ(Ogre::Radian(), Ogre::Radian(wheel->getSteeringAngle()-baseOrientation * Ogre::Math::PI/180), Ogre::Radian());

baseapplication.cpp
bool BaseApplication::frameRenderingQueued(const Ogre::FrameEvent& evt)
fix

if (mKeyboard->isKeyDown(OIS::KC_NUMPAD4)) {
vehicle->steerLeft();
}
if (mKeyboard->isKeyDown(OIS::KC_NUMPAD6)) {
vehicle->steerRight();
}

vehicle.cpp
Vehicle::Vehicle(std::string name, VehicleDescription vehDesc, Critter::RenderSystem* critter)
fix

wheels = new VehicleWheel(vehicleName, static_cast<Wheel*>(body->getShape(3-i)),
vehDesc.wheelPositions,
(i % 2 == 0) ? 0 : 180.0f, body->getNode()->getSceneNode());

this is dirty fixes, but at least it works.
thanks for demo.