Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
When this card is Normal or Special Summoned: You can change its battle position. If a "Superheavy Samurai" monster you control battles an opponent's monster, after damage calculation: The opponent's monster's ATK and DEF become 0.
--超重武者ソード－999
--Superheavy Samurai Swordsman
local s,id=GetID()
function s.initial_effect(c)
	--position
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_POSITION)
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e1:SetProperty(EFFECT_FLAG_DAMAGE_STEP)
	e1:SetCode(EVENT_SUMMON_SUCCESS)
	e1:SetTarget(s.postg)
	e1:SetOperation(s.posop)
	c:RegisterEffect(e1)
	local e2=e1:Clone()
	e2:SetCode(EVENT_SPSUMMON_SUCCESS)
	c:RegisterEffect(e2)
	--atk
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,1))
	e3:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_F)
	e3:SetRange(LOCATION_MZONE)
	e3:SetCode(EVENT_BATTLED)
	e3:SetCondition(s.atkcon)
	e3:SetOperation(s.atkop)
	c:RegisterEffect(e3)
end
s.listed_series={SET_SUPERHEAVY_SAMURAI}
function s.postg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetOperationInfo(0,CATEGORY_POSITION,e:GetHandler(),1,0,0)
end
function s.posop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:IsRelateToEffect(e) then
		Duel.ChangePosition(c,POS_FACEUP_DEFENSE,POS_FACEUP_ATTACK,POS_FACEUP_ATTACK,POS_FACEUP_ATTACK)
	end
end
function s.atkcon(e,tp,eg,ep,ev,re,r,rp)
	local a=Duel.GetAttacker()
	local d=Duel.GetAttackTarget()
	if a:IsControler(1-tp) then a,d=d,a end
	e:SetLabelObject(d)
	return a and d and a:IsFaceup() and a:IsSetCard(SET_SUPERHEAVY_SAMURAI) and a:IsRelateToBattle() and d:IsFaceup() and d:IsRelateToBattle()
end
function s.atkop(e,tp,eg,ep,ev,re,r,rp)
	local tc=e:GetLabelObject()
	if tc:IsFaceup() and tc:IsRelateToBattle() then
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_SET_ATTACK_FINAL)
		e1:SetReset(RESET_EVENT|RESETS_STANDARD)
		e1:SetValue(0)
		tc:RegisterEffect(e1)
		local e2=e1:Clone()
		e2:SetCode(EFFECT_SET_DEFENSE_FINAL)
		tc:RegisterEffect(e2)
	end
end