Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
This card cannot attack directly, and can only attack Dragon-Type monsters. If this card battles a Dragon-Type monster, this card gains 1000 ATK during the Damage Step only, also that monster has its effects negated during this Battle Phase, as long as this card remains face-up on the field.
--ギャラクシー・ドラグーン
--Galaxy Dragon
local s,id=GetID()
function s.initial_effect(c)
	--atklimit
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_CANNOT_SELECT_BATTLE_TARGET)
	e1:SetValue(s.bttg)
	c:RegisterEffect(e1)
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_SINGLE)
	e2:SetCode(EFFECT_CANNOT_DIRECT_ATTACK)
	c:RegisterEffect(e2)
	--atkup
	local e3=Effect.CreateEffect(c)
	e3:SetType(EFFECT_TYPE_SINGLE)
	e3:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e3:SetRange(LOCATION_MZONE)
	e3:SetCode(EFFECT_UPDATE_ATTACK)
	e3:SetCondition(s.atkcon)
	e3:SetValue(1000)
	c:RegisterEffect(e3)
	--disable
	local e4=Effect.CreateEffect(c)
	e4:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_CONTINUOUS)
	e4:SetCode(EVENT_ATTACK_ANNOUNCE)
	e4:SetRange(LOCATION_MZONE)
	e4:SetOperation(s.disop)
	c:RegisterEffect(e4)
	local e5=e4:Clone()
	e5:SetCode(EVENT_PRE_DAMAGE_CALCULATE)
	c:RegisterEffect(e5)
end
function s.bttg(e,c)
	return c:IsFacedown() or not c:IsRace(RACE_DRAGON)
end
function s.atkcon(e)
	local ph=Duel.GetCurrentPhase()
	local bc=e:GetHandler():GetBattleTarget()
	return (ph==PHASE_DAMAGE or ph==PHASE_DAMAGE_CAL) and bc and bc:IsRace(RACE_DRAGON)
end
function s.disop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local bc=c:GetBattleTarget()
	if bc and bc:IsRace(RACE_DRAGON) then
		c:CreateRelation(bc,RESET_EVENT|RESETS_STANDARD)
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_DISABLE)
		e1:SetCondition(s.discon)
		e1:SetReset(RESET_EVENT|RESETS_STANDARD|RESET_PHASE|PHASE_BATTLE)
		bc:RegisterEffect(e1)
		local e2=Effect.CreateEffect(c)
		e2:SetType(EFFECT_TYPE_SINGLE)
		e2:SetCode(EFFECT_DISABLE_EFFECT)
		e2:SetCondition(s.discon)
		e2:SetReset(RESET_EVENT|RESETS_STANDARD|RESET_PHASE|PHASE_BATTLE)
		bc:RegisterEffect(e2)
	end
end
function s.discon(e)
	return e:GetOwner():IsRelateToCard(e:GetHandler())
end