Lua 1.2 - throw "open trap" from inventory

[emil92b]

im trying to make an open trap, close itself when thrown out of inventory

i have tried to do like this with onAddItem movement script, however it will then interfere with my onUse action script and close right after i open it, which i do not want.

function onAddItem(item, tileitem, position)
    item:transform(item.itemid - 1) -- a closed trap
    return true
end

are there any other way to solve this, or what am i missing?

 

[Chev]

return false

?
Show both scripts then I'll help you

 

[emil92b]

Show both scripts then I'll help you

closed trap, action script

function onUse(player, item, fromPosition, target, toPosition)
    item:transform(item.itemid + 1) -- a trap
    return true
end

 

[Evil Puncker]

check if item position on the onAddItem is ground

 

[Xikini]

check if item position on the onAddItem is ground

Ugh. I tried like 50 different ways and couldn't figure out a way to do it like this.
Guess I'm dumb as a brick. xD

im trying to make an open trap, close itself when thrown out of inventory

i have tried to do like this with onAddItem movement script, however it will then interfere with my onUse action script and close right after i open it, which i do not want.

function onAddItem(item, tileitem, position)
    item:transform(item.itemid - 1) -- a closed trap
    return true
end

are there any other way to solve this, or what am i missing?

Idk if this is the best way, but it works.

data/events/scripts/player.lua

replace

function Player:onMoveItem(item, count, fromPosition, toPosition, fromCylinder, toCylinder)
    if hasEventCallback(EVENT_CALLBACK_ONMOVEITEM) then
        return EventCallback(EVENT_CALLBACK_ONMOVEITEM, self, item, count, fromPosition, toPosition, fromCylinder, toCylinder)
    else
        return true
    end
end

with

function Player:onMoveItem(item, count, fromPosition, toPosition, fromCylinder, toCylinder)
    if hasEventCallback(EVENT_CALLBACK_ONMOVEITEM) then
        -- moveable trap item (open)
        if item.itemid == 2579 then
            item:transform(item.itemid - 1) -- closed
            toPosition:sendMagicEffect(CONST_ME_POFF)
        end
        return EventCallback(EVENT_CALLBACK_ONMOVEITEM, self, item, count, fromPosition, toPosition, fromCylinder, toCylinder)
    else
        return true
    end
end

 

[emil92b]

check if item position on the onAddItem is ground

function onAddItem(item, tileitem, position)
    local tile = Tile(item:getPosition())
    if not tile then
        return false
    end

    local ground = tile:getGround()
    if not ground then
        return false
    end

    item:getPosition():sendMagicEffect(CONST_ME_POFF)
    item:transform(item.itemid - 1) -- a closed trap
    return true
end

like this?, i cant get it to work

@Xikini the "nostalrius" 1.2 distro which i am using don't have EventCallBack thingy implemented apparently : /, appreciate the effort tho

 

[Xikini]

function onAddItem(item, tileitem, position)
    local tile = Tile(item:getPosition())
    if not tile then
        return false
    end

    local ground = tile:getGround()
    if not ground then
        return false
    end

    item:getPosition():sendMagicEffect(CONST_ME_POFF)
    item:transform(item.itemid - 1) -- a closed trap
    return true
end

like this?, i cant get it to work

@Xikini the "nostalrius" 1.2 distro which i am using don't have EventCallBack thingy implemented apparently : /, appreciate the effort tho

do you have a link to the distro?

 

[emil92b]

do you have a link to the distro?

TwistedScorpio/Nostalrius (https://github.com/TwistedScorpio/Nostalrius)

 

[Xikini]

Idk. lol
I've been wracking my brain for like an hour trying to think of a way to do this.

I just don't see how it's possible without having information about where the item came from.

A lot of functions have this issue, where they trigger After something has happened, but never have a function Before/while something is happening.

I think this is the latter.

Item tells us the item that was moved.
tileItem.. I swear is useless. I can't get it to print anything but 0 or table. By it's name, I assumed it was the tile we were putting the item on.. but I can't figure out a way to use it.
and finally..
position tells us the position that the item was added to, but not where it came from.

-- and your distro doesn't appear to have any of the onMoveItem or onThrow features in creaturescripts..

So I'm at a loss.
I don't personally think it's possible with what you have.

There's no way to determine the difference between creating/transforming/moving the item onto a tile.
As far as the script is concerned, they are all the exact same thing.