Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
"Prinzessin" you control can attack directly. Your opponent cannot target "Golden Castle of Stromberg" you control with card effects, also it cannot be destroyed by card effects.
--カボチャの馬車
--Pumpkin Carriage
--Scripted by AlphaKretin
local s,id=GetID()
function s.initial_effect(c)
	--direct attack
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCode(EFFECT_DIRECT_ATTACK)
	e1:SetTargetRange(LOCATION_MZONE,0)
	e1:SetTarget(aux.TargetBoolFunction(Card.IsCode,78527720))
	c:RegisterEffect(e1)
	--indestructable
	local e2=Effect.CreateEffect(c)
	e2:SetProperty(EFFECT_FLAG_SET_AVAILABLE)
	e2:SetType(EFFECT_TYPE_FIELD)
	e2:SetCode(EFFECT_INDESTRUCTABLE_EFFECT)
	e2:SetRange(LOCATION_MZONE)
	e2:SetTargetRange(LOCATION_ONFIELD,0)
	e2:SetTarget(s.indtg)
	e2:SetValue(1)
	c:RegisterEffect(e2)
	--cannot be target
	local e3=e2:Clone()
	e3:SetCode(EFFECT_CANNOT_BE_EFFECT_TARGET)
	e3:SetValue(aux.tgoval)
	c:RegisterEffect(e3)
end
s.listed_names={CARD_STROMBERG,78527720}
function s.indtg(e,c)
	return c:IsFaceup() and c:IsCode(CARD_STROMBERG)
end