Ogre + Bullet rotation

2013-08-25T22:46:42+00:00

I'm trying to make a character controlller and i've got problem with rotation. If i do it this way:

Code:

for(list::iterator It = Objects.begin(); It != Objects.end(); ++It){        Ogre::SceneNode* node = static_cast((*It)->getUserPointer());        btVector3 Point = (*It)->getCenterOfMassPosition();        node->setPosition(Ogre::Vector3((float)Point[0], (float)Point[1], (float)Point[2]));        btQuaternion btq = (*It)->getOrientation();        Ogre::Quaternion quart = Ogre::Quaternion(btq.w(),btq.x(),btq.y(),btq.z());        node->setOrientation(quart);}

then it looks like rotation of the mesh is kinda inverted, i mean forward is forward, backward is backward, but left is right and right is left.

If i do it this way:

Code:

if(left || right){        xform.setRotation(btQuaternion(btVector3(0.0, 1.0, 0.0), turnAngle));        Ogre::SceneNode* node = static_cast(body->getUserPointer());        node->setOrientation(Ogre::Quaternion(-(Ogre::Radian)turnAngle, Ogre::Vector3(0.0, 1.0, 0.0)));}

then it works, but i'm not sure if it's supposed to be like this

some more code if it is necessery:

Code:

void KinematicCharacterControl::playerStep(btScalar delta, bool forward, bool backward, bool left, bool right, bool jump){    preStep();btTransform xform;xform = body->getWorldTransform();    body->activate(true);/* Handle turning */if(left)    {std::cout << "left" << std::endl;turnAngle += delta * turnVelocity;    }if(right)    {std::cout << "right" << std::endl;turnAngle -= delta * turnVelocity;    }    if(left || right)    {        xform.setRotation(btQuaternion(btVector3(0.0, 1.0, 0.0), turnAngle));        Ogre::SceneNode* node = static_cast(body->getUserPointer());        node->setOrientation(Ogre::Quaternion(-(Ogre::Radian)turnAngle, Ogre::Vector3(0.0, 1.0, 0.0)));    }    body->setWorldTransform(xform);body->setCenterOfMassTransform(xform);btVector3 linearVelocity = body->getLinearVelocity();btScalar speed = body->getLinearVelocity().length();btVector3 forwardDir = xform.getBasis()[2];forwardDir.normalize();btVector3 walkDirection = btVector3(0.0, 0.0, 0.0);btScalar walkSpeed = walkVelocity * delta;if(forward)    {walkDirection += forwardDir;    }if(backward)    {walkDirection -= forwardDir;    }    if(jump)    {this->jump();    }if(!forward && !backward && onGround()){linearVelocity *= btScalar(0.2);body->setLinearVelocity(linearVelocity);}else{if(speed < maxLinearVelocity){btVector3 velocity = linearVelocity + walkDirection * walkSpeed;body->applyCentralImpulse(velocity*10);}}}//update:Character->playerStep(DeltaTime* 0.001, forward, backward, left, right, jump);    btTransform xform;characterBody->getMotionState()->getWorldTransform(xform);    btVector3 pos = xform.getOrigin();    btQuaternion btq = xform.getRotation();//first way    characterNode->setOrientation(btq.w(),btq.x(),btq.y(),btq.z());    characterNode->setPosition(Ogre::Vector3(pos[0], pos[1], pos[2]));

Statistics: Posted by konri100 — Sun Aug 25, 2013 10:46 pm

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Ogre + Bullet rotation