// Physics SDK globals
    NxPhysicsSDK* gPhysicsSDK = NULL;
    NxScene* gScene = NULL;

    // Actor globals
    NxActor* gameLevel = NULL;

    NxActor* CreateLevelMesh()
    {
         gLevelMesh.convertLevel();

        // Build physical model
        @@NxTriangleMeshDesc levelDesc;
        @@levelDesc.numVertices = g_Level.m_numOfVerts;
        @@levelDesc.numTriangles = gLevelMesh.nbTriangles;
        @@levelDesc.pointStrideBytes = sizeof(tBSPVertex);
        @@levelDesc.triangleStrideBytes = 3*sizeof(NxU32);
        @@levelDesc.points = (const NxPoint*)&(g_Level.m_pVerts[0].vPosition);
        @@levelDesc.triangles = gLevelMesh.triangles;
        @@levelDesc.flags = 0;

        NxTriangleMeshShapeDesc levelShapeDesc;
        NxInitCooking();
        if (0)
        {
            // Cooking from file
            bool status = NxCookTriangleMesh(levelDesc, UserStream("c:\\tmp.bin", false));
            levelShapeDesc.meshData = gPhysicsSDK->createTriangleMesh(UserStream("c:\\tmp.bin", true));
        }
        else
        {
            // Cooking from memory
            MemoryWriteBuffer buf;
            bool status = NxCookTriangleMesh(levelDesc, buf);
            levelShapeDesc.meshData = gPhysicsSDK->createTriangleMesh(MemoryReadBuffer(buf.data));
        }

        NxActorDesc actorDesc;
        actorDesc.shapes.pushBack(&levelShapeDesc);
        NxActor* actor = gScene->createActor(actorDesc);
        actor->userData = (void*)1;

         return actor;
    }

    void InitNx()
    {
        // ...
        // Initialize BSP Level Actor
        LoadBSP();
        gameLevel = CreateLevelMesh();
        // ...
    }