Ogre::Entity* ground = mSceneMgr->createEntity("ground", "Level.mesh");
        Ogre::StaticGeometry *sg = mSceneMgr->createStaticGeometry("Level");
        const int size = 1300;
        sg->setRegionDimensions(Ogre::Vector3(size));
        sg->setOrigin(Ogre::Vector3(-size/2, 0, -size/2));
        sg->addEntity(ground, Ogre::Vector3::ZERO);
        sg->build();

        // Create the collision shape and rigid body of our level.
        hkpBvTreeShape* groundShape = HkOgre::Cooker::processOgreMesh(ground);
        hkpRigidBodyCinfo ci;
        ci.m_shape = groundShape;
        ci.m_motionType = hkpMotion::MOTION_FIXED;
        ci.m_position = hkVector4( 0.0f, 0.0f, 0.0f );
        ci.m_qualityType = HK_COLLIDABLE_QUALITY_FIXED;
        hkpRigidBody* groundBody = new hkpRigidBody(ci);

        mWorld->markForWrite();
        // Add the ground geometry to the physical world.
        mWorld->addEntity(groundBody)->removeReference();

        // Remove the reference to our physical
        // shape because it's unneeded.
        groundShape->removeReference();
        mWorld->unmarkForWrite();