Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
If this card destroys an opponent's monster by battle and sends it to the GY: Equip the destroyed monster to this card. Gains ATK equal to the combined ATK of the monsters equipped to it by this effect.
--トラックロイド
--Truckroid
local s,id=GetID()
function s.initial_effect(c)
	--equip
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_EQUIP)
	e1:SetCode(EVENT_BATTLE_DESTROYING)
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_F)
	e1:SetCondition(s.eqcon)
	e1:SetTarget(s.eqtg)
	e1:SetOperation(s.eqop)
	c:RegisterEffect(e1)
	aux.AddEREquipLimit(c,nil,aux.FilterBoolFunction(Card.IsMonster),s.equipop,e1)
end
function s.eqcon(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local tc=c:GetBattleTarget()
	return c:IsRelateToBattle() and c:IsFaceup() and tc:IsLocation(LOCATION_GRAVE) and tc:IsMonster() and tc:IsReason(REASON_BATTLE) 
		and not tc:IsForbidden()
end
function s.eqtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	local tc=e:GetHandler():GetBattleTarget()
	Duel.SetTargetCard(tc)
	Duel.SetOperationInfo(0,CATEGORY_LEAVE_GRAVE,tc,1,0,0)
end
function s.equipop(c,e,tp,tc)
	local atk=tc:GetTextAttack()
	if not c:EquipByEffectAndLimitRegister(e,tp,tc) then return end
	if atk<0 then atk=0 end
	if atk>0 then
		local e2=Effect.CreateEffect(c)
		e2:SetType(EFFECT_TYPE_EQUIP)
		e2:SetProperty(EFFECT_FLAG_IGNORE_IMMUNE+EFFECT_FLAG_OWNER_RELATE)
		e2:SetCode(EFFECT_UPDATE_ATTACK)
		e2:SetReset(RESET_EVENT|RESETS_STANDARD)
		e2:SetValue(atk)
		tc:RegisterEffect(e2)
	end
end
function s.eqop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local tc=Duel.GetFirstTarget()
	if tc and tc:IsRelateToEffect(e) then
		s.equipop(c,e,tp,tc)
	end
end