--纳尔逊海上机动战术
local m=77709003
local cm=_G["c"..m]
Duel.LoadScript("c37564765.lua")
function cm.initial_effect(c)
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCondition(function(e,tp,eg,ep,ev,re,r,rp)
		local ph=Duel.GetCurrentPhase()
		return Duel.GetFieldGroupCount(tp,0,LOCATION_ONFIELD)>Duel.GetFieldGroupCount(tp,LOCATION_ONFIELD,0) and ph>PHASE_MAIN1 and ph<PHASE_MAIN2
	end)
	e1:SetOperation(function(e,tp,eg,ep,ev,re,r,rp)
		local c=e:GetHandler()
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_FIELD)
		e1:SetCode(EFFECT_EXTRA_ATTACK)
		e1:SetTargetRange(LOCATION_MZONE,0)
		e1:SetReset(RESET_PHASE+PHASE_BATTLE)
		e1:SetValue(2)
		Duel.RegisterEffect(e1,tp)
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_FIELD)
		e1:SetCode(EFFECT_EXTRA_ATTACK)
		e1:SetTargetRange(LOCATION_MZONE,0)
		e1:SetReset(RESET_PHASE+PHASE_BATTLE)
		e1:SetValue(2)
		Duel.RegisterEffect(e1,tp)
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_FIELD)
		e1:SetCode(EFFECT_MUST_ATTACK)
		e1:SetTargetRange(0,LOCATION_MZONE)
		e1:SetReset(RESET_PHASE+PHASE_BATTLE)
		e1:SetValue(2)
		Duel.RegisterEffect(e1,tp)
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_FIELD)
		e1:SetCode(EFFECT_SET_POSITION)
		e1:SetTargetRange(0,LOCATION_MZONE)
		e1:SetReset(RESET_PHASE+PHASE_BATTLE)
		e1:SetValue(POS_FACEUP_ATTACK)
		Duel.RegisterEffect(e1,tp)
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_FIELD)
		e1:SetCode(EFFECT_CHANGE_DAMAGE)
		e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
		e1:SetTargetRange(0,1)
		e1:SetValue(function(e,re,dam,r,rp,rc)
			if bit.band(r,REASON_BATTLE)~=0 then
				return dam/2
			else return dam end
		end)
		e1:SetReset(RESET_PHASE+PHASE_BATTLE)
		Duel.RegisterEffect(e1,tp)
	end)
	c:RegisterEffect(e1)
end