src.cpp

// An alternative to this method is to use a small hierarchy of 
// nodes with the camera being attached to the deepest child node.
// With this alternative method, you would not have to manually place
// and rotate your spotlight. It also avoids gimbal lock.
//
// Here is where I got most of the code for my FPS setup for lab 4:
//      http://www.ogre3d.org/tikiwiki/tiki-index.php?page=Creating+a+simple+first-person+camera+system

void yourUpdateFunc()
{
    // Ray cast in camera look direction.
    Ogre::Ray r;
	r.setDirection(mCamera->getDirection());
	r.setOrigin(mCamera->getPosition());

    // You could also set your spotlight direction to the ray direction,
    // and the spotlight position to the ray position.
}