...

switch(m_Type)
    {
        case WEAPON_GRENADE:
            Curvature = GameServer()->Tuning()->m_GrenadeCurvature;
            if(GameServer()->m_apPlayers[m_Owner] && GameServer()->m_apPlayers[m_Owner]->m_ClassNew == CLASS_HEAVY)
            {
                Curvature = 0;
                Speed = (GameServer()->Tuning()->m_GrenadeSpeed * 1.7f);
            }
            Speed = GameServer()->Tuning()->m_GrenadeSpeed;
            break;

...