ToME: the Tales of Maj'Eyal

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--- Check if the actor has a bow or sling and corresponding ammo
function _M:hasArcheryWeapon(type)
	if self:attr("disarmed") then
		return nil, "disarmed"
	end

	if not self:getInven("MAINHAND") then return nil, "no shooter" end
	if not self:getInven("QUIVER") then return nil, "no ammo" end
	local weapon = self:getInven("MAINHAND")[1]
	local ammo = self:getInven("QUIVER")[1]
	if self.inven[self.INVEN_PSIONIC_FOCUS] then
		local pf_weapon = self:getInven("PSIONIC_FOCUS")[1]
		if pf_weapon and pf_weapon.archery then
			weapon = pf_weapon
		end
	end
	if not weapon or not weapon.archery then
		return nil, "no shooter"
	end
	if not ammo then
		return nil, "no ammo"
	else
		if not ammo.archery_ammo or weapon.archery ~= ammo.archery_ammo then
			return nil, "bad ammo"
		end
	end
	if type and weapon.archery ~= type then return nil, "bad type" end
	return weapon, ammo
end