by Jmv_cyber, modified by CRxTRDude
Original site: http://www.planethalflife.com/hlprogramming/tutorial.asp?i=205

Tutorial type: Beginners - C/P

As you might have noticed, the previous tutorials only works for SDK 2.1. This one works for SDK 2.3 (and maybe 2.2, haven't tested that though). Anyway, replace the zoom from the secondary attack code from the crossbow ¹⁾ with this:

if (m_fInZoom == 0) // 0 means reset to default fov
{
  m_pPlayer->pev->fov = m_pPlayer->m_iFOV = 45;
  m_fInZoom = 1;
}
else if (m_fInZoom == 1)
{
  m_pPlayer->pev->fov = m_pPlayer->m_iFOV = 20;
  m_fInZoom = 2;
}
else if (m_fInZoom == 2)
{
  m_pPlayer->pev->fov = m_pPlayer->m_iFOV = 0;
  m_fInZoom = 0;
}