--Bigbang Defender
local s,id=GetID()
function s.initial_effect(c)
	c:EnableReviveLimit()
	aux.AddOrigBigbangType(c)
	aux.AddBigbangProc(c,Card.IsNeutral,1,1,Card.IsNegative,1)
	--The first time this card would be destroyed by card effect each turn, it is not destroyed.
	local e0=Effect.CreateEffect(c)
	e0:SetType(EFFECT_TYPE_SINGLE)
	e0:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e0:SetRange(LOCATION_MZONE)
	e0:SetCode(EFFECT_INDESTRUCTABLE_COUNT)
	e0:SetCountLimit(1)
	e0:SetValue(s.valcon)
	c:RegisterEffect(e0)
	--Once per turn, when an opponent's monster activates its effects on the field, or declares an attack, while you control this Defense Position monster 
	--(Quick Effect): You can banish 1 Negative monster from your hand, field or GY; negate the activation or attack, and if you do banish that opponent's monster.
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_NEGATE+CATEGORY_REMOVE)
	e1:SetType(EFFECT_TYPE_QUICK_O)
	e1:SetCode(EVENT_CHAINING)
	e1:SetProperty(EFFECT_FLAG_DAMAGE_STEP+EFFECT_FLAG_DAMAGE_CAL)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCountLimit(1,EFFECT_COUNT_CODE_SINGLE)
	e1:SetCondition(s.negcon)
	e1:SetCost(s.negcost)
	e1:SetTarget(aux.nbtg)
	e1:SetOperation(s.negop)
	c:RegisterEffect(e1)
	local e2=e1:Clone()
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e2:SetCode(EVENT_ATTACK_ANNOUNCE)
	e2:SetCondition(s.negcon2)
	e2:SetTarget(s.negtg2)
	e2:SetOperation(s.negop2)
	c:RegisterEffect(e2)
	--If this card attacks, it is changed to Defense Position at the end of the Damage Step.
	local e3=Effect.CreateEffect(c)
	e3:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_CONTINUOUS)
	e3:SetCode(EVENT_DAMAGE_STEP_END)
	e3:SetCondition(s.poscon)
	e3:SetOperation(s.posop)
	c:RegisterEffect(e3)
end
function s.valcon(e,re,r,rp)
	return bit.band(r,REASON_EFFECT)~=0
end
function s.negcon(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local rc=re:GetHandler()
	return re:IsActiveType(TYPE_MONSTER) and rc~=c and rc:GetControler()~=tp and not c:IsStatus(STATUS_BATTLE_DESTROYED) and Duel.IsChainNegatable(ev) and c:IsDefensePos()
end
function s.banishfilter(c)
	return c:IsNegative() and c:IsAbleToRemoveAsCost() and (not c:IsLocation(LOCATION_MZONE) or c:IsFaceup())
end
function s.negcost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.banishfilter,tp,0x16,0,1,nil) end
	local g=Duel.SelectMatchingCard(tp,s.banishfilter,tp,0x16,0,1,1,nil)
	Duel.Remove(g,POS_FACEUP,REASON_COST)
end
function s.negop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.NegateActivation(ev) and re:GetHandler():IsRelateToEffect(re) then
		Duel.Remove(eg,POS_FACEUP,REASON_EFFECT)
	end
end
function s.negcon2(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	return Duel.GetAttacker():GetControler()~=tp and c:IsDefensePos()
end
function s.negtg2(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetAttacker():IsAbleToRemove() end
	Duel.SetOperationInfo(0,CATEGORY_REMOVE,Duel.GetAttacker(),1,0,0)
end
function s.negop2(e,tp,eg,ep,ev,re,r,rp)
	if Duel.NegateAttack() then
		Duel.Remove(Duel.GetAttacker(),POS_FACEUP,REASON_EFFECT)
	end
end
function s.poscon(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler()==Duel.GetAttacker() and e:GetHandler():IsRelateToBattle()
end
function s.posop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:IsAttackPos() then
		Duel.ChangePosition(c,POS_FACEUP_DEFENSE)
	end
end