--セキュリティー・ボール
--Security Orb
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_POSITION)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_ATTACK_ANNOUNCE)
	e1:SetCondition(s.condition)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
	--Destroy
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_DESTROY)
	e2:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_F)
	e2:SetCode(EVENT_TO_GRAVE)
	e2:SetCondition(s.descon)
	e2:SetTarget(s.destg)
	e2:SetOperation(s.desop)
	c:RegisterEffect(e2)
end
function s.condition(e,tp,eg,ep,ev,re,r,rp)
	return Duel.IsTurnPlayer(1-tp)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	local tg=Duel.GetAttacker()
	if chkc then return chkc==tg end
	if chk==0 then return tg:IsOnField() and tg:IsCanChangePosition() and tg:IsCanBeEffectTarget(e) end
	Duel.SetTargetCard(tg)
	Duel.SetOperationInfo(0,CATEGORY_POSITION,tg,1,0,0)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) and tc:CanAttack() and not tc:IsStatus(STATUS_ATTACK_CANCELED) then
		Duel.ChangePosition(tc,POS_FACEUP_DEFENSE)
	end
end
function s.descon(e,tp,eg,ep,ev,re,r,rp)
	return (r&REASON_DESTROY)~=0 and rp~=tp and re:IsSpellTrapEffect()
		and e:GetHandler():IsPreviousLocation(LOCATION_ONFIELD)
		and e:GetHandler():IsPreviousPosition(POS_FACEDOWN)
end
function s.destg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) end
	if chk==0 then return Duel.IsExistingTarget(aux.TRUE,tp,LOCATION_MZONE,LOCATION_MZONE,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_DESTROY)
	local g=Duel.SelectTarget(tp,aux.TRUE,tp,LOCATION_MZONE,LOCATION_MZONE,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,g,1,0,0)
end
function s.desop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc and tc:IsRelateToEffect(e) then
		Duel.Destroy(tc,REASON_EFFECT)
	end
end