Function isUnderground

src/OpenLoco/src/Audio/VehicleAudio.cpp:37–45

    }

    static bool isUnderground(const World::Pos3& pos)
    {
        if (pos.x == Location::null || !World::validCoords(pos))
        {
            return false;
        }
        auto* surface = World::TileManager::get(pos).surface();
        return surface->baseHeight() > pos.z;
    }

    static constexpr ReverbParams kTunnelReverb = {
        .density = 1.0f,