_lastHeadshot = nil
function check_headshot(self, attack_data)
	if self._dead or self._invulnerable then return end
	if attack_data.attacker_unit ~= managers.player:player_unit() then return end

	-- Check headshot
	if self._head_body_name and attack_data.col_ray.body and attack_data.col_ray.body:name() == self._ids_head_body_name then
		-- Check last headshot
		if not _lastHeadshot or os.clock() - _lastHeadshot > 0.5 then
			_lastHeadshot = os.clock()
			io.stdout:write("PLAY headshot.wav\n")
		end
	end
end
if not _copDmg then _copDmg = CopDamage.damage_bullet end
function CopDamage:damage_bullet( attack_data )
	check_headshot(self, attack_data)
	return _copDmg(self, attack_data)
end
if not _civDmg then _civDmg = CivilianDamage.damage_bullet end
function CivilianDamage:damage_bullet( attack_data )
	check_headshot(self, attack_data)
	return _civDmg(self, attack_data)
end
HuskCivilianDamage.damage_bullet = CivilianDamage.damage_bullet