frostbite IsVisible

bool IsVisible ( fb::Vec3* src, fb::Vec3* end )
{
    fb::ClientGameContext* GameContext = fb::ClientGameContext::Singleton ();

    if ( !POINTERCHK(GameContext) || !src || !end )
        return false;

    if ( !POINTERCHK(GameContext->m_level) )
        return false;

    fb::HavokPhysicsManager* HavokManager = GameContext->m_level->m_PhysicsManager;

    if ( !POINTERCHK(HavokManager) )
        return false;

    fb::IPhysicsRayCaster* RayCaster = HavokManager->m_rayCaster;

    if ( !POINTERCHK(RayCaster) )
        return false;

    fb::RayCastHit ray;

    __declspec ( align ( 16 ) ) fb::Vec3 from = *src;
    __declspec ( align ( 16 ) ) fb::Vec3 to = *end;

    bool ret = !RayCaster->physicsRayQuery ( "OnGroundState::update", &from, &to, &ray, fb::DontCheckWater | fb::DontCheckRagdoll | fb::DontCheckCharacter | fb::DontCheckPhantoms, 0 );

    return ret;
}