--Ｓｐ－ソニック・バスター
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_DAMAGE)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCost(s.cost)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	local tc=Duel.GetFieldCard(tp,LOCATION_FZONE,0)
	if chk==0 then return tc and tc:IsCanRemoveCounter(tp,0x91,2,REASON_COST) end
	Duel.Hint(HINT_OPSELECTED,1-tp,e:GetDescription())
	tc:RemoveCounter(tp,0x91,2,REASON_COST)
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 chkc:IsFaceup() end
	if chk==0 then return Duel.IsExistingTarget(Card.IsFaceup,tp,LOCATION_MZONE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_FACEUP)
	local tc=Duel.SelectTarget(tp,Card.IsFaceup,tp,LOCATION_MZONE,0,1,1,nil):GetFirst()
	Duel.SetOperationInfo(0,CATEGORY_DAMAGE,nil,0,1-tp,tc:GetAttack()/2)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc and tc:IsRelateToEffect(e) and tc:IsFaceup() then
		Duel.Damage(1-tp,tc:GetAttack()/2,REASON_EFFECT)
	end
end