Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
If this card attacks a Defense Position monster with DEF 2000 or more, destroy the monster with this card's effect without applying Damage Calculation.
--円盤闘士
--Disc Fighter
local s,id=GetID()
function s.initial_effect(c)
	--destroy
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_DESTROY)
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_F)
	e1:SetCode(EVENT_BATTLE_CONFIRM)
	e1:SetTarget(s.destg)
	e1:SetOperation(s.desop)
	c:RegisterEffect(e1)
end
function s.destg(e,tp,eg,ep,ev,re,r,rp,chk)
	local t=Duel.GetAttackTarget()
	if chk==0 then return Duel.GetAttacker()==e:GetHandler() and t~=nil and t:IsDefensePos() and t:IsDefenseAbove(2000) end
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,t,1,0,0)
end
function s.desop(e,tp,eg,ep,ev,re,r,rp)
	local t=Duel.GetAttackTarget()
	if t~=nil and t:IsRelateToBattle() and not t:IsAttackPos() then
		Duel.Destroy(t,REASON_EFFECT)
	end
end