Исходник Oversee movment fix for lw (has fix roll)

[ghooost]

    void movement_fix(Vector& wish_angle, CUserCmd* m_pcmd)
    {
        Vector PureForward, PureRight, PureUp, CurrForward, CurrRight, CurrUp;
        math::angle_vectors(wish_angle, &PureForward, &PureRight, &PureUp);
        math::angle_vectors(m_pcmd->m_viewangles, &CurrForward, &CurrRight, &CurrUp);

        PureForward[2] = PureRight[2] = CurrForward[2] = CurrRight[2] = 0.f;

        auto VectorNormalize = [](Vector& vec)->float {
            float radius = sqrtf(vec.x * vec.x + vec.y * vec.y + vec.z * vec.z);
            float iradius = 1.f / (radius + FLT_EPSILON);

            vec.x *= iradius;
            vec.y *= iradius;
            vec.z *= iradius;

            return radius;
        };
        VectorNormalize(PureForward);
        VectorNormalize(PureRight);
        VectorNormalize(CurrForward);
        VectorNormalize(CurrRight);
        Vector PureWishDir;
        for (auto i = 0u; i < 2; i++)
            PureWishDir[i] = PureForward[i] * m_pcmd->m_forwardmove + PureRight[i] * m_pcmd->m_sidemove;
        PureWishDir[2] = 0.f;

        Vector CurrWishDir;
        for (auto i = 0u; i < 2; i++)
            CurrWishDir[i] = CurrForward[i] * m_pcmd->m_forwardmove + CurrRight[i] * m_pcmd->m_sidemove;
        CurrWishDir[2] = 0.f;

        if (PureWishDir != CurrWishDir) {
            m_pcmd->m_forwardmove = (PureWishDir.x * CurrRight.y - CurrRight.x * PureWishDir.y) / (CurrRight.y * CurrForward.x - CurrRight.x * CurrForward.y);
            m_pcmd->m_sidemove = (PureWishDir.y * CurrForward.x - CurrForward.y * PureWishDir.x) / (CurrRight.y * CurrForward.x - CurrRight.x * CurrForward.y);
        }
    }