I have a new problem. I used the format of Breaker never activating in the tutorial and modified it to make AD Changer to never set but it doesn't work.

function EmptyJarStartup(deck) 
  deck.Init = EmptyJarInit 
  deck.SummonBlacklist = EmptyJarSummonBlacklist
end

EmptyJarSummonBlacklist = {
  96146814, -- A/D Changer
  33508719, -- Morphing Jar
  ...
}

Also, I have the part in startup that says
decks.boechk = false to check if book of eclipse has been activated during the turn
how do I access it later on outside the startup function?

GlobalEclipse = 0 

function ChainEclipse()
  if ... then -- check for Eclipse activation requirement here
    GlobalEclipse = Duel.GetTurnCount() -- set the global variable
    return true
  end
  return false
end

function EmptyJarOnSelectChain(cards)
  if HasID(cards,35480699,ChainEclipse) then
    return 1,CurrentIndex
  end
end

if GlobalEclipse == Duel.GetTurnCount() then
  -- The AI activated Eclipse this turn
else
  -- The AI did not activate Eclipse this turn
end

Hello Snarky, first, I must thank you for all your work. It is admirable what you've done. Thank you very much. It give me a lot of fun time.

I am a software developer, and is the first time I am trying this, at first is overwhelming to see the code for the different decks. I'll give it time to try something.

So... How I can know if "U.A. Penalty Box" effect was activated that turn? or better yet, how I can know if "U.A. Penalty Box" can activate its effect?

function UAChain(cards)
  if HasID(cards,70043345,ChainPenaltyBox) then
    OPTSet(70043345)
    return 1,CurrentIndex
  end
end

function UAStartup(deck)
  deck.AttackTarget         = UAAttackTarget
  deck.AttackBoost          = UAAttackBoost
end

function PenaltyBoxFilter(c)
  return Affected(c,TYPE_TRAP)
end
function UABattleCommand(attackers,targets,act)
  SortByAtk(attackers) -- lowest ATK first
  for i=1,#attackers do
    local c = attackers[i]
    if HasIDNotNegated(AIST(),70043345,true) 
    and OPTCheck(70043345)
    and CardsMatchingFilter(targets,PenaltyBoxFilter)>0
    and FilterSet(c,178)
    then
      return Attack(i)
    end
  end
end
function UAAttackTarget(targets,attacker)
  if HasIDNotNegated(AIST(),70043345,true) 
  and OPTCheck(70043345)
  and FilterSet(attacker,178)
  then
    return BestTarget(targets,1,PRIO_BANISH,PenaltyBoxFilter)
  end
end

Sorry if I do not use the tools well, its my first try.

On an unrelated note, is there any pre-existing function to check if the AI has an available Normal Summon? I could always use a Global Variable and just set it to false whenever the script orders a Normal Summon (and reset it each turn), but that just sounds so... sloppy?

Duel.GetActivityCount(player,ACTIVITY_NORMAL_SUMMON)

NormalSummonCheck(player)
NormalSummonCount(player)

Hi Snarky, i have a question:

In the opponent's turn, how can chain an effect only when does not start a chain?, it means, a chain when the opponent set a card or summon without effect monster, or attack, etc. The reason is because i don't want to lose the timing, my effect always must be chain 1.

Thanks and sorry for my bad english.

function ChainMyCard()
  if Duel.GetCurrentChain() == 0 then
     return true
  end
  return false
end

Hi Snarky, i have a question:

In the opponent's turn, how can chain an effect only when does not start a chain?, it means, a chain when the opponent set a card or summon without effect monster, or attack, etc. The reason is because i don't want to lose the timing, my effect always must be chain 1.

Thanks and sorry for my bad english.

You can use the function Duel.GetCurrentChain() for this. I use it for the same reasons you stated for a couple of cards. It returns a number, which is equivalent to the current chain link of the current chain (duh).

So you would do something like this:

function ChainMyCard()
  if Duel.GetCurrentChain() == 0 then
     return true
  end
  return false
end

Does this help you?

and where I can find the list that contains all functions?