Help needed with really simple scripts

[Merethif]

The first question is probably very silly but please mind that I'm at the very beginning of script using, not to even mention script making.
So I've been trying to use one of the scripts from repository but I fail every time and I really don't know what am I doing wrong.
Generally I'm looking for a teleporter activated with an item being in inventory (like the one with Fighter's Challenge and Sword of Nex).
I've found several suitable scripts in repository (viewtopic.php?p=31831#p31831), but for example when I'm using first one I get error: 'then' expected near '=' X after the line: if item.name = "blueberry_pie" then. With the script from next post I got: attempt to call method 'getItem' (a nil value) X after line: local itemObj = champion:getItem(i).

The second question is about stacks of items in container in alcove.
For example if I got:

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local merethifsack = spawn("sack")
   merethifsack:addItem(spawn("sling"))
   merethifsack:addItem(spawn("rock"))
   merethifsack:addItem(spawn("rock"))
   merethifsack:addItem(spawn("rock"))
merethifsackAlcove:addItem(merethifsack)

Is there an option to spawn all those three rocks in single container slot?

[Komag]

you can add the stack count right on the same line, before the end )

error "then", you need == not =

(typing on phone)

[crisman]

you should try with this:

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local itemObj = champion:getItem(i)
if itemObj ~= nil then
*do whatever you want*
end

for the rocks there is a setStack(n) script
let me know!

[Merethif]

Thanks for help. Sadly, due to my lack of knowledge I'm still unable to solve both issues.

I'm not sure how to add the stack thing.
sack:addItem(spawn("rock")setStack(2)) doesn't work
merethifsack:addItem(spawn("rock")setStackSize(2)) neither.

As for the other script, adding == instead of = seems to be fine since there's no more error message, but still it doesn't work (nothing happens when I step on plate that activates script with item in backpack). Also I must admit I'm not sure where should I put those lines you provided crisman. I suppose I may need a step by step guide for dummies (with helpful comments and such).

[crisman]

my bad, the correct script is getStackSize(n)

The correct script is something like this:

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local sack1 = spawn("sack")
sack1:addItem(spawn("rock"):setStackSize(3))
alcove:addItem(sack1)

[Merethif]

my bad, the correct script is getStackSize(n)

The correct script is something like this:

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local sack1 = spawn("sack")
sack1:addItem(spawn("rock"):setStackSize(3))
alcove:addItem(sack1)

Ok, so I was experimenting with setStackSize(n), putting different combination with it in different places, when all I've needed was a colon! There's nothing more enlightening then a good example.
Thanks a lot!

Probably I'm missing something as obvious as colon in the other one as well.

[crisman]

Columns are just a way to tidy up the code a bit, if you want you can write it in a single row
(this is untested, some parenthesis may be missing or in wrong place)
alcove:addItem(spawn("sack"):(addItem(spawn("rock"):setStackSize(3))))

For the other code: I'd like to see, if possible, what you wish to do with champion:getItem(i)
--maybe it's just because you need party:getChampion(a):getItem(i)?

[Komag]

here is another example:

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local alchSack = spawn("sack")
alchSack:addItem(spawn("scroll"):setScrollText("Potion of Healing\n1 flask\n1 tar bead\n\nAntivenom\n1 flask\n1 cave nettle"))
alchSack:addItem(spawn("mortar"))
alchSack:addItem(spawn("flask"))
alchSack:addItem(spawn("flask"))
alchSack:addItem(spawn("tar_bead"):setStackSize(2))
alchSack:addItem(spawn("cave_nettle"))
alchAlcove:addItem(alchSack)

[Merethif]

For the other code: I'd like to see, if possible, what you wish to do with champion:getItem(i)
--maybe it's just because you need party:getChampion(a):getItem(i)?

I've been mostly coping scripts from repository and paste them into single script_entity (the entity is activated by a hidden plate with deactivated teleporter, named entrance_teleporter on the same tile). For example something like this :

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    function checkForItemParty(item)
       local i = 1
       repeat
          if checkForItem(party:getChampion(i), item)
             then return true
          end
          i = i + 1
       until i == 5
       return false
    end

    function checkForItem(champion, item)
       local i = 1
       repeat
          local itemObj = champion:getItem(i)
          if itemObj ~= nil then
             if itemObj.name == item
                then return true
             end
          end
          i = i+1
          until i == 32
       return false
    end

    if checkForItemParty("entrance_scroll")
      then
      entrance_teleporter:activate()
      else
     entrance_teleporter:deactivate()
      end
end
    end

And thanks Komag for another script - the more sacks in alcoves, the better

[crisman]

The script you gave me it's working fine, just had to tweak a little bit - delete last end and put function check() between last if and the end above it. Anyway, I'd like to give you a much simpler code for that:

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function check()
for i = 1, 4 do
	for j = 1, 31 do
	local itemObj = party:getChampion(i):getItem(j)
		if itemObj ~= nil then
			if itemObj.name == "rock" then
				teleporter_1:activate()
			end
		end
	end
end
end

It does not deactivate the teleporter though, it will only need a couple more strings.