how to set up and control car in bleeding?

actorr = mScene->createBody("car", new NxOgre::Cube(1), Vector3(120, 5, 6), "model: gt.mesh", "mass: 1000");
actorr->setRenderMode(RenderableSource::RM_Interpolate);

f_left = new Wheel(2.5f, "position: -1 0 1", "model: gt_wheel.mesh, mode: interpolate");
actorr->addShape(f_left);

b_left = new Wheel(2.5f, "position: 1 0 1", "model: gt_wheel.mesh, mode: interpolate");
actorr->addShape(b_left);

f_right = new Wheel(2.5f, "position: -1 0 -1", "model:gt_wheel.mesh, mode: interpolate");
actorr->addShape(f_right);

b_right = new Wheel(2.5f, "position: 1 0 -1", "model:gt_wheel.mesh, mode: interpolate");
actorr->addShape(b_right);

and how to control it with key upã€

Usually, unless you have special circumstances, a "WheelSet" is used to create the wheels and just generally control them. Such as this example:

Body* car = mScene->createBody("car", new NxOgre::Cube(2,2,3), Vector3(6, 4, 6), "model: maddog_body.mesh", "mass: 4150");
car->setRenderMode(RenderableSource::RM_Interpolate);

// Set up the Params for all of the wheels.
WheelParams wp;
wp.setToDefault();
wp.mLocalPose.t.set(0.756, -0.55, 1.319);
wp.mSuspension.spring = 12.5e3;
wp.mSuspension.damper = 1500;
wp.mSuspensionTravel = 0.3f;

// Create the wheels.
WheelSet* mSet = WheelSet::createFourWheelSet(0.45f, float3(0.756, -0.55, 1.319), float3(-0.756, -0.55, -1.076), car, wp, "model: maddog_wheell.mesh, mode: interpolate");

// Set the wheels as front wheel drive.
mSet->setAs(WheelSet::TL_Front);

// Never make the Actor go to sleep. (important)
car->wakeUp(1e10);

And to control it:

if (mKeyboard->isKeyDown(KC_G)) {
mSet->drive(100);
mSet->brake(0);
}
else if (mKeyboard->isKeyDown(KC_B)) {
mSet->brake(25);
mSet->drive(0);
}
else {
mSet->drive(0);
}

if (mKeyboard->isKeyDown(KC_V)) {
mSet->steer(0.75);
}
else if (mKeyboard->isKeyDown(KC_N)) {
mSet->steer(-0.75);
}
else {
mSet->steer(0);
}

Hope that helps.

Thank u very much,but the question is:
when I push down the key 'V':all left vehicles are change, and push down key 'G',all left vehicles are rotate the axis 'X',so the car can't move!
what is wrong with it?

The picture is:

我的英文太差了,太难表达我的æ„

Did you do this?

// Set the wheels as front wheel drive.
mSet->setAs(WheelSet::TL_Front);

thank u ! I found out the problem: It is my car--wheels' question! and I change new wheels,and the result is OK! Hehe

Hi,,I set up wheels like this:
ww=WheelSet::createFourWheelSet(actorr, Vector3(-1.0f, -0.1f, 1.8f), Vector3(1.0f, -0.1f, -1.6f), 0.6,"",wp);

So the question is ,how to add material to wheels?

What kind of material; Ogre or NxOgre?

PhysX/NxOgre doesn't use materials for wheels (Look up API documentation and use it with the WheelParams), and for Ogre just set up the material for when you create the mesh.

I can't stop my car!
so how to add friction to wheels?

Via the WheelParams, like I just said. Read the PhysX API Documentation that is installed when you install the PhysX SDK. It's all there.

OK,OK,
Thank u,thank you!!

Heh reading this thread made me laugh

Heh reading this thread made me laugh

Lost in Translation.

Heh reading this thread made me laugh

我æ

my car so slip,and I try many many times,but can't solve,,
at last ,I felt so tired,,,and hope people can solve it for me,,,many thanks!!!

ShapeParams ssp;
ssp.mMaterialAsName="BumperCarMaterial";
-------can't solve

///////////////////////////////////
ww.frontLeft->getNxWheelShape()->setMaterial(mScene->getMaterialIndex("BumperCarMaterial"));
ww.frontRight->getNxWheelShape()->setMaterial(mScene->getMaterialIndex("BumperCarMaterial"));
ww.backLeft->getNxWheelShape()->setMaterial(mScene->getMaterialIndex("BumperCarMaterial"));ww.backRight->getNxWheelShape()->setMaterial(mScene->getMaterialIndex("BumperCarMaterial"));
-------can't solve

////////////////////////////////////
set the wheelparams like this:
NxOgre::WheelParams wp;
wp.setToNormal();
wp.suspension_damper = 1.0f;
wp.suspension_spring = 25000.0f;
wp.suspension_target = 0.0f;
wp.suspension_travel = 0.1f;
wp.clamped_friction = true;
wp.emulate_legacy_wheel = false;
wp.unscaled_spring_behavior = false;
wp.axle_speed_override = false;
wp.input_lat_slipvelocity = true;
wp.input_long_slipvelocity = true;

wp.lateral_tire_asymptoteSlip = 2.0f;
wp.lateral_tire_asymptoteValue = 0.007f;
wp.lateral_tire_extremumSlip = 0.15f;
wp.lateral_tire_extremumValue = 0.6f;
wp.lateral_tire_stiffnessFactor = 10.0e3f;

wp.longitudal_tire_asymptoteSlip = 2.0f;
wp.longitudal_tire_asymptoteValue = 0.7f;
wp.longitudal_tire_extremumSlip = 0.15f;
wp.longitudal_tire_extremumValue = 1.0f;
wp.longitudal_tire_stiffnessFactor = 30.0e3f;
wp.inverseWheelMass = 0.2f;
---------can't solve
so my god!!!!
who can save me?