Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Target 1 Insect monster you control; equip this card to it. While you control the equipped monster, your opponent's monsters cannot attack Insect monsters, except the equipped monster. While this card is equipped to a monster, each time your opponent Normal or Special Summons a monster(s), OR activates a card or effect, place 1 Scale Counter on each face-up monster they control. Each monster your opponent controls loses 100 ATK/DEF for each Scale Counter it has.
--蝕みの鱗粉
--Corrosive Scales
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_EQUIP)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
s.counter_place_list={0x1045}
function s.filter(c)
	return c:IsFaceup() and c:IsRace(RACE_INSECT)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and chkc:IsControler(tp) and s.filter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(s.filter,tp,LOCATION_MZONE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_EQUIP)
	Duel.SelectTarget(tp,s.filter,tp,LOCATION_MZONE,0,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_EQUIP,e:GetHandler(),1,0,0)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if not c:IsLocation(LOCATION_SZONE) then return end
	local tc=Duel.GetFirstTarget()
	if c:IsRelateToEffect(e) and tc:IsRelateToEffect(e) and tc:IsFaceup() then
		Duel.Equip(tp,c,tc)
		c:CancelToGrave()
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_EQUIP_LIMIT)
		e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
		e1:SetValue(s.eqlimit)
		e1:SetReset(RESET_EVENT|RESETS_STANDARD)
		c:RegisterEffect(e1)
		local e2=Effect.CreateEffect(c)
		e2:SetType(EFFECT_TYPE_FIELD)
		e2:SetCode(EFFECT_CANNOT_SELECT_BATTLE_TARGET)
		e2:SetRange(LOCATION_SZONE)
		e2:SetTargetRange(0,LOCATION_MZONE)
		e2:SetCondition(s.atkcon1)
		e2:SetValue(s.atktg)
		e2:SetReset(RESET_EVENT|RESETS_STANDARD)
		c:RegisterEffect(e2)
		local e3=Effect.CreateEffect(c)
		e3:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
		e3:SetRange(LOCATION_SZONE)
		e3:SetCode(EVENT_SUMMON_SUCCESS)
		e3:SetCondition(s.ctcon1)
		e3:SetOperation(s.ctop)
		c:RegisterEffect(e3)
		local e4=e3:Clone()
		e4:SetCode(EVENT_SPSUMMON_SUCCESS)
		c:RegisterEffect(e4)
		local e5=Effect.CreateEffect(c)
		e5:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
		e5:SetCode(EVENT_CHAINING)
		e5:SetRange(LOCATION_SZONE)
		e5:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
		e5:SetOperation(s.regop)
		c:RegisterEffect(e5)
		local e6=Effect.CreateEffect(c)
		e6:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
		e6:SetCode(EVENT_CHAIN_SOLVED)
		e6:SetRange(LOCATION_SZONE)
		e6:SetCondition(s.ctcon2)
		e6:SetOperation(s.ctop)
		c:RegisterEffect(e6)
		local e7=Effect.CreateEffect(c)
		e7:SetType(EFFECT_TYPE_FIELD)
		e7:SetCode(EFFECT_UPDATE_ATTACK)
		e7:SetRange(LOCATION_SZONE)
		e7:SetTargetRange(0,LOCATION_MZONE)
		e7:SetCondition(s.atkcon2)
		e7:SetValue(s.atkval)
		c:RegisterEffect(e7)
		local e8=e7:Clone()
		e8:SetCode(EFFECT_UPDATE_DEFENSE)
		c:RegisterEffect(e8)
	end
end
function s.eqlimit(e,c)
	return c:GetControler()==e:GetHandlerPlayer() or e:GetHandler():GetEquipTarget()==c
end
function s.atkcon1(e)
	local ec=e:GetHandler():GetEquipTarget()
	return ec and ec:GetControler()==e:GetHandlerPlayer()
end
function s.atktg(e,c)
	return c:IsRace(RACE_INSECT) and c~=e:GetHandler():GetEquipTarget()
end
function s.ctcon1(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():GetEquipTarget() and eg:IsExists(Card.IsSummonPlayer,1,nil,1-tp)
end
function s.ctop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_CARD,0,id)
	local g=Duel.GetMatchingGroup(Card.IsFaceup,tp,0,LOCATION_MZONE,nil)
	local tc=g:GetFirst()
	for tc in aux.Next(g) do
		tc:AddCounter(0x1045,1)
	end
end
function s.regop(e,tp,eg,ep,ev,re,r,rp)
	e:GetHandler():RegisterFlagEffect(id,RESET_EVENT|(RESETS_STANDARD&~RESET_TURN_SET)|RESET_CHAIN,0,1)
end
function s.ctcon2(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():GetEquipTarget() and ep~=tp and e:GetHandler():GetFlagEffect(id)~=0
end
function s.atkcon2(e)
	return e:GetHandler():GetEquipTarget()
end
function s.atkval(e,c)
	return c:GetCounter(0x1045)*-100
end