about ogrenewt camera and collision

hi~~
i have one question about camera and collision?
how i can implemet the camera with collison.

thank you very much.

Hi, to begin with you attach a body to a node wich also hold your camera.

Good luck


// Scanmaster_K

can you post some code for me?
i am a newbie
thank you very much

So, here a bit of code to have a camera that can use collision detection:
//Creating the camera and the viewport. You should declare "cam" and "vp" somewhere else
Ogre::Camera * cam = mSceneMgr->createCamera("PlayerCam");
Ogre::Viewport * vp = mRoot->getAutoCreatedWindow()->addViewport(cam);
vp->setBackgroundColour(Ogre::ColourValue(1, 1, 1));
cam->setAspectRatio(Ogre::Real(vp->getActualWidth()) / Ogre::Real(vp->getActualHeight()));
cam->setNearClipDistance(5);

//Adding a body for collision
Ogre::Vector3 size(0.1, 0.1, 0.1); //I think that will be enough small
OgreNewt::Collision * col = new OgreNewt::CollisionPrimitives::Box(mWorld, size);
body = new OgreNewt::Body(mWorld, col);
body->attachToNode(camNode);
delete col;
Ogre::Real mass = 1.0; //I think the weight is okay
Ogre::Vector3 inertia = OgreNewt::MomentOfInertia::CalcBoxSolid(mass, size);
body->setMassMatrix(mass, inertia);
body->setAutoFreeze(0); //To be able to move the body without calling ->unFreeze()


But now, you can't move the camera by simply moving the SceneNode. You must use Callback function:

body->setCustomForceAndTorqueCallback(camCallback);

Here is the Callback fonction declaration:
void camCallback(OgreNewt::Body * _body)
{
/* Some code here to move the body. Like _body->setForce(...)
}

_body can be named differently. And you should declare it before the first code part.

I hope this code will work correctly or even compile
If you have any other question just ask!

Have a good day!

thank you nord666 very much
i'll try this code .

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i implemented with the ray.but i wish i can do with ogrenewt.

thank you nord666 again~~~