Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Once per turn: You can target 1 Link Monster on the field; move it to a Main Monster Zone it points to on its controller's field. Once per turn: You can switch the locations of 2 Link Monsters in your Main Monster Zones or 2 Link Monsters in your opponent's Main Monster Zones.
--キャッスル・リンク
--Castle Link
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e1)
	--move
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e2:SetType(EFFECT_TYPE_IGNITION)
	e2:SetRange(LOCATION_FZONE)
	e2:SetCountLimit(1)
	e2:SetTarget(s.seqtg)
	e2:SetOperation(s.seqop)
	c:RegisterEffect(e2)
	--change
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,1))
	e3:SetType(EFFECT_TYPE_IGNITION)
	e3:SetRange(LOCATION_FZONE)
	e3:SetCountLimit(1)
	e3:SetTarget(s.chtg)
	e3:SetOperation(s.chop)
	c:RegisterEffect(e3)
end
function s.filter(c)
	if not c:IsLinkMonster() then return false end
	local p=c:GetControler()
	local zone=c:GetLinkedZone()&ZONES_MMZ
	return Duel.GetLocationCount(p,LOCATION_MZONE,p,LOCATION_REASON_CONTROL,zone)>0
end
function s.seqtg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and s.filter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(s.filter,tp,LOCATION_MZONE,LOCATION_MZONE,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,aux.Stringid(id,2))
	Duel.SelectTarget(tp,s.filter,tp,LOCATION_MZONE,LOCATION_MZONE,1,1,nil)
end
function s.seqop(e,tp,eg,ep,ev,re,r,rp)
	if not e:GetHandler():IsRelateToEffect(e) then return end
	local tc=Duel.GetFirstTarget()
	if not tc or not tc:IsRelateToEffect(e) then return end
	local p=tc:GetControler()
	local zone=tc:GetLinkedZone()&ZONES_MMZ
	if Duel.GetLocationCount(p,LOCATION_MZONE,p,LOCATION_REASON_CONTROL,zone)>0 then
		local i=0
		if not tc:IsControler(tp) then i=16 end
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOZONE)
		local nseq=math.log(Duel.SelectDisableField(tp,1,LOCATION_MZONE,LOCATION_MZONE,~(zone<<i)),2) - i
		Duel.MoveSequence(tc,nseq)
	end
end
function s.chfilter1(c)
	return c:IsLinkMonster() and c:GetSequence()<5
		and Duel.IsExistingMatchingCard(s.chfilter2,c:GetControler(),LOCATION_MZONE,0,1,c)
end
function s.chfilter2(c)
	return c:IsLinkMonster() and c:GetSequence()<5
end
function s.chtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.chfilter1,tp,LOCATION_MZONE,LOCATION_MZONE,1,nil) end
end
function s.chop(e,tp,eg,ep,ev,re,r,rp)
	if not e:GetHandler():IsRelateToEffect(e) then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_CONTROL)
	local g1=Duel.SelectMatchingCard(tp,s.chfilter1,tp,LOCATION_MZONE,LOCATION_MZONE,1,1,nil)
	local tc1=g1:GetFirst()
	if not tc1 then return end
	Duel.HintSelection(g1)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_CONTROL)
	local g2=Duel.SelectMatchingCard(tp,s.chfilter2,tc1:GetControler(),LOCATION_MZONE,0,1,1,tc1)
	Duel.HintSelection(g2)
	local tc2=g2:GetFirst()
	Duel.SwapSequence(tc1,tc2)
end