1. For example:
get_user_aiming (in player prethink)
if aim at alive playerget_user_name
get_user_weapon
get_weaponname
set_hudmessage
show_hudmessage
Don't display a hudmessage everu prethink if still aiming at the same player to not flood the clients.
2. Use kRenderFxGlowShell instead of kRenderFxNone