Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
FLIP: Inflict 500 points of damage to your opponent's Life Points for each Spell and Trap Card on your opponent's side of the field.
--剣の女王
--Princess of Tsurugi
local s,id=GetID()
function s.initial_effect(c)
	--flip
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_DAMAGE)
	e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_FLIP)
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetTargetPlayer(1-tp)
	local dam=Duel.GetFieldGroupCount(tp,0,LOCATION_SZONE)*500
	Duel.SetTargetParam(dam)
	Duel.SetOperationInfo(0,CATEGORY_DAMAGE,nil,0,1-tp,dam)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	local p=Duel.GetChainInfo(0,CHAININFO_TARGET_PLAYER)
	local dam=Duel.GetFieldGroupCount(p,LOCATION_SZONE,0)*500
	Duel.Damage(p,dam,REASON_EFFECT)
end