Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
If you control "D.D. Esper Star Sparrow", "Beast-Warrior Puma" and "Phoenix Beast Gairuda", you can Special Summon this card (from your hand). While this card is face-up on the field, it cannot change its battle position. Once per turn: You can target 1 monster you control; it can attack your opponent directly this turn.
--鉄巨人アイアンハンマー
--Ironhammer the Giant
local s,id=GetID()
function s.initial_effect(c)
	--Special summon itself from hand
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetCode(EFFECT_SPSUMMON_PROC)
	e1:SetProperty(EFFECT_FLAG_UNCOPYABLE)
	e1:SetRange(LOCATION_HAND)
	e1:SetCondition(s.spcon)
	c:RegisterEffect(e1)
	--Cannot change its battle position
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_SINGLE)
	e2:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCode(EFFECT_CANNOT_CHANGE_POSITION)
	c:RegisterEffect(e2)
	--Make targeted monster be able to attack directly
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,0))
	e3:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e3:SetType(EFFECT_TYPE_IGNITION)
	e3:SetRange(LOCATION_MZONE)
	e3:SetCountLimit(1)
	e3:SetTarget(s.target)
	e3:SetOperation(s.operation)
	c:RegisterEffect(e3)
end
function s.spfilter(c,code)
	return c:IsFaceup() and c:IsCode(code)
end
function s.spcon(e,c)
	if c==nil then return true end
	local tp=c:GetControler()
	return Duel.GetLocationCount(tp,LOCATION_MZONE,0)~=0
		and Duel.IsExistingMatchingCard(s.spfilter,tp,LOCATION_ONFIELD,0,1,nil,80208158)
		and Duel.IsExistingMatchingCard(s.spfilter,tp,LOCATION_ONFIELD,0,1,nil,16796157)
		and Duel.IsExistingMatchingCard(s.spfilter,tp,LOCATION_ONFIELD,0,1,nil,43791861)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsControler(tp) and chkc:IsFaceup() and chkc:IsLocation(LOCATION_MZONE) end
	if chk==0 then return Duel.IsExistingTarget(Card.IsFaceup,tp,LOCATION_MZONE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_FACEUP)
	Duel.SelectTarget(tp,Card.IsFaceup,tp,LOCATION_MZONE,0,1,1,nil)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsFaceup() and tc:IsRelateToEffect(e) then
		--Can attack directly
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetDescription(3205)
		e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_CLIENT_HINT)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_DIRECT_ATTACK)
		e1:SetReset(RESETS_STANDARD_PHASE_END)
		tc:RegisterEffect(e1)
	end
end