--ヘビー・コンダラー
-- Heavy Roller

local s,id=GetID()
function s.initial_effect(c)
	--Shuffle 3 Dragon into the deck to draw 1
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCategory(CATEGORY_DRAW)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e1:SetCost(s.cost)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.costfilter(c)
	return c:IsMonster() and c:IsAttribute(ATTRIBUTE_FIRE) and c:IsAbleToGraveAsCost()
end
function s.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.costfilter,tp,LOCATION_HAND,0,1,nil) end
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsPlayerCanDraw(tp,1) end
	Duel.SetTargetPlayer(tp)
	Duel.SetTargetParam(1)
	Duel.SetOperationInfo(0,CATEGORY_DRAW,nil,0,tp,1)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TODECK)
	--Requirement
	local c=e:GetHandler()
	local tg=Duel.SelectMatchingCard(tp,s.costfilter,tp,LOCATION_HAND,0,1,1,nil)
	if Duel.SendtoGrave(tg,REASON_COST)==1 then
		--Effect
		local p,d=Duel.GetChainInfo(0,CHAININFO_TARGET_PLAYER,CHAININFO_TARGET_PARAM)
		Duel.Draw(p,d,REASON_EFFECT)
		if Duel.IsExistingMatchingCard(Card.IsFaceup,0,LOCATION_FZONE,LOCATION_FZONE,1,nil) and Duel.SelectYesNo(tp,aux.Stringid(id,0)) then
			Duel.Draw(tp,1,REASON_EFFECT)
		end
	end
end