name: Attack
card_text: Once per turn, when the battle position of a Rock monster you control is changed: You can target 1 Spell/Trap your opponent controls; destroy that target.
lua: local s, id, o = GetID()
  function s.initial_effect(c)
  	--activate
  	local e1 = Effect.CreateEffect(c)
  	e1:SetType(EFFECT_TYPE_ACTIVATE)
  	e1:SetCode(EVENT_FREE_CHAIN)
  	c:RegisterEffect(e1)
  	--destroy
  	local e2 = Effect.CreateEffect(c)
  	e2:SetDescription(aux.Stringid(id, 0))
  	e2:SetCategory(CATEGORY_DESTROY)
  	e2:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_TRIGGER_O)
  	e2:SetCode(EVENT_CHANGE_POS)
  	e2:SetProperty(EFFECT_FLAG_CARD_TARGET)
  	e2:SetRange(LOCATION_SZONE)
  	e2:SetCountLimit(1)
  	e2:SetCondition(s.descon)
  	e2:SetTarget(s.destg)
  	e2:SetOperation(s.desop)
  	c:RegisterEffect(e2)
  end
  function s.cfilter(c, tp)
  	local np = c:GetPosition()
  	local pp = c:GetPreviousPosition()
  	return c:IsControler(tp) and c:IsRace(RACE_ROCK) and not c:IsStatus(STATUS_CONTINUOUS_POS) and ((np < 3 and pp > 3) or (pp < 3 and np > 3))
  end
  function s.descon(e, tp, eg, ep, ev, re, r, rp)
  	return eg:IsExists(s.cfilter, 1, nil, tp)
  end
  function s.desfilter(c)
  	return c:IsType(TYPE_SPELL + TYPE_TRAP)
  end
  function s.destg(e, tp, eg, ep, ev, re, r, rp, chk, chkc)
  	if chkc then
  		return chkc:IsControler(1 - tp) and chkc:IsOnField() and s.desfilter(chkc)
  	end
  	if chk == 0 then
  		return not e:GetHandler():IsStatus(STATUS_CHAINING) and Duel.IsExistingTarget(s.desfilter, tp, 0, LOCATION_ONFIELD, 1, nil)
  	end
  	Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_DESTROY)
  	local g = Duel.SelectTarget(tp, s.desfilter, tp, 0, LOCATION_ONFIELD, 1, 1, nil)
  	Duel.SetOperationInfo(0, CATEGORY_DESTROY, g, 1, 0, 0)
  end
  function s.desop(e, tp, eg, ep, ev, re, r, rp)
  	local tc = Duel.GetFirstTarget()
  	if tc:IsRelateToEffect(e) then
  		Duel.Destroy(tc, REASON_EFFECT)
  	end
  end
  
  
source_text: Attack
  Once per turn, when the battle position of a Rock monster you control is changed: You can target 1 Spell/Trap your opponent controls; destroy that target.
target_text: -- Attack
  local s, id, o = GetID()
  function s.initial_effect(c)
  	--activate
  	local e1 = Effect.CreateEffect(c)
  	e1:SetType(EFFECT_TYPE_ACTIVATE)
  	e1:SetCode(EVENT_FREE_CHAIN)
  	c:RegisterEffect(e1)
  	--destroy
  	local e2 = Effect.CreateEffect(c)
  	e2:SetDescription(aux.Stringid(id, 0))
  	e2:SetCategory(CATEGORY_DESTROY)
  	e2:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_TRIGGER_O)
  	e2:SetCode(EVENT_CHANGE_POS)
  	e2:SetProperty(EFFECT_FLAG_CARD_TARGET)
  	e2:SetRange(LOCATION_SZONE)
  	e2:SetCountLimit(1)
  	e2:SetCondition(s.descon)
  	e2:SetTarget(s.destg)
  	e2:SetOperation(s.desop)
  	c:RegisterEffect(e2)
  end
  function s.cfilter(c, tp)
  	local np = c:GetPosition()
  	local pp = c:GetPreviousPosition()
  	return c:IsControler(tp) and c:IsRace(RACE_ROCK) and not c:IsStatus(STATUS_CONTINUOUS_POS) and ((np < 3 and pp > 3) or (pp < 3 and np > 3))
  end
  function s.descon(e, tp, eg, ep, ev, re, r, rp)
  	return eg:IsExists(s.cfilter, 1, nil, tp)
  end
  function s.desfilter(c)
  	return c:IsType(TYPE_SPELL + TYPE_TRAP)
  end
  function s.destg(e, tp, eg, ep, ev, re, r, rp, chk, chkc)
  	if chkc then
  		return chkc:IsControler(1 - tp) and chkc:IsOnField() and s.desfilter(chkc)
  	end
  	if chk == 0 then
  		return not e:GetHandler():IsStatus(STATUS_CHAINING) and Duel.IsExistingTarget(s.desfilter, tp, 0, LOCATION_ONFIELD, 1, nil)
  	end
  	Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_DESTROY)
  	local g = Duel.SelectTarget(tp, s.desfilter, tp, 0, LOCATION_ONFIELD, 1, 1, nil)
  	Duel.SetOperationInfo(0, CATEGORY_DESTROY, g, 1, 0, 0)
  end
  function s.desop(e, tp, eg, ep, ev, re, r, rp)
  	local tc = Duel.GetFirstTarget()
  	if tc:IsRelateToEffect(e) then
  		Duel.Destroy(tc, REASON_EFFECT)
  	end
  end
  
  