attempt to index global 'elementBackpack' (a nil value)

[Tycka]

Code:

function moveRucksakOutOfInventory (itemName) 
    local sack = getElementData ( source, "rucksak" ) 
    if sack and sack[1] ~= 0 then 
        local x,y,z = getElementPosition(source) 
        local item,itemString = getItemTablePosition(itemName) 
        local itemPickup = createItemPickup(item,x+math.random(-1.25,1.25),y+math.random(-1.25,1.25),z,itemString,sack) 
        if elementBackpack[source] then 
            detachElementFromBone(elementBackpack[source]) 
            destroyElement(elementBackpack[source]) 
        end 
        setElementData ( source, "rucksak", { 0 } ) 
    end 
end 

Error: attempt to index global 'elementBackpack' (a nil value) (Error line: if elementBackpack[source] then)

[Sasu]

Where have you defined 'source'?

[Tycka]

  
local elementBackpack = {} 
function backPackBack (dataName,oldValue) 
    if getElementType(source) == "player" and dataName =="rucksak" then 
        local newValue = getElementData(source,dataName) 
        if not #newValue or #newValue <= 0 then 
            setElementData ( source, "rucksak", { 0 } ) 
            return true 
        end 
        if not oldValue or not #oldValue then 
            oldValue = { 0 } 
        end 
        if newValue[1] == 0 then 
            if elementBackpack[source] then 
                detachElementFromBone(elementBackpack[source]) 
                destroyElement(elementBackpack[source]) 
                elementBackpack[source] = false 
            end 
        elseif newValue[1] ~= oldValue[1] then 
            if elementBackpack[source] then 
                detachElementFromBone(elementBackpack[source]) 
                destroyElement(elementBackpack[source]) 
                elementBackpack[source] = false 
            end 
            
            local x,y,z = getElementPosition(source) 
            local rx,ry,rz = getElementRotation(source) 
            local model = newValue[1] 
            if model == 1 then 
                elementBackpack[source] = createObject(3026,x,y,z) 
            elseif model == 2 then 
                elementBackpack[source] = createObject(1248,x,y,z) -- Here with backpack 
            elseif model == 3 then 
                elementBackpack[source] = createObject(1575,x,y,z) 
            elseif model == 4 then 
                elementBackpack[source] = createObject(1252,x,y,z) 
            elseif model == 5 then 
                elementBackpack[source] = createObject(2405,x,y,z) 
            else 
            return false 
            end 
            if model == 3 then 
                attachElementToBone(elementBackpack[source],source,3,0,-0.16,0.05,270,0,180) 
            else 
                attachElementToBone(elementBackpack[source],source,3,0,-0.225,0.05,90,0,0) 
            end 
        end 
    end 
    if getElementType(source) == "player" and dataName == "helmetOn" then 
        if getElementData ( source, dataName ) then 
            local x, y, z = getElementPosition(source) 
            local helmet = createObject(2052, x, y, z) 
            setElementData ( source, "helmetObject", helmet ) 
            local skin = getElementModel ( source ) 
            if skin == 73 then 
                attachElementToBone(helmet, source, 1, 0, 0.02, -0.53, 0, 0, 90) 
            elseif skin == 287 then 
                attachElementToBone(helmet, source, 1, 0, 0.01, -0.56, 0, 0, 90) 
            elseif skin == 18 then 
                attachElementToBone(helmet, source, 1, 0.015, 0.025, -0.54, 0, 0, 90) 
            elseif skin == 23 then 
                attachElementToBone(helmet, source, 1, 0, 0.015, -0.574, 0, 0, 90) 
            elseif skin == 24 then 
                attachElementToBone(helmet, source, 1, 0, 0.015, -0.575, 0, 0, 90) 
            elseif skin == 1 then 
                attachElementToBone(helmet, source, 1, 0, 0.015, -0.545, 0, 0, 90) 
            elseif skin == 2 then 
                attachElementToBone(helmet, source, 1, 0.015, 0.025, -0.59, 0, 0, 90) 
            else 
                attachElementToBone(helmet, source, 1, 0, 0.015, -115, 0, 0, 90) 
            end 
        else 
            if isElement ( getElementData ( source, "helmetObject" ) ) then 
                detachElementFromBone( getElementData ( source, "helmetObject" ) ) 
                destroyElement ( getElementData ( source, "helmetObject" ) ) 
                setElementData ( source, "helmetObject", false ) 
            end 
        end 
    end 
end 
addEventHandler ( "onElementDataChange", getRootElement(), backPackBack ) 

[Tycka]

[uP]

[Sasu]

I didn't see any errors. I think it doesn't create the table. Before the line where appears the error, put this and tell me what it says.

outputChatBox(tostring(elementBackpack), source) 

[Tycka]

I didn't see any errors. I think it doesn't create the table. Before the line where appears the error, put this and tell me what it says.

outputChatBox(tostring(elementBackpack), source) 

In chat just say: nil

[Sasu]

So that means that the table 'elementBackpack' doesn't create. I suppose you are trying to create the table in the same script of the function, aren't you? If not, do it global.

[qaisjp]

We aren't your slaves. We will not fix your code if you just provide it to us. Did you do any debugging? You've just plonked some code in the middle of the forum.

Read Debugging.

Sasu, please don't help him.

[ViRuZGamiing]

Perhaps try being a bit friendlier to those who are people on the forum, @A Concerned Citizen

Because I see all your replies and they all say the same, 'go to the wiki we don't help you'.

If Sasu wants to help someone he can do that, that's polite. If you don't want/can't help then don't reply pls.

Anyway keep on the good work Sasu, I remember you from waaaay back on the forum.

[Bonsai]

Well, its kinda true.

Just throwing in some Code and an Error message and waiting for someone to fix that.

[IIYAMA]

There are too many of those stupid kids posting parts from DayZ/etc. gamemode, when they have no fu idea how to write a single line of code.

It is shameful, disrespectful and against the forum rules.

There are hardly any seriously posts.

Edited November 26, 2014 by Guest

[ViRuZGamiing]

There are too many of those stupid kids posting parts from DayZ/etc. gamemode, when they have no fu idea how to write a single line of code.

It is shameful, disrespectful and against the forum rules.

Yes but we can just stop replying on them instead of starting to flame, etc.

[IIYAMA]

Citizen spoke the hard truth, sometimes that relieves.

He didn't flame, just gave his opinion.

The main reason why they created forums is for discussing problems. This is a problem, so we can discus it and give our opinion.

It is a good thing to save Sasu from wasting time, he can play mta/(or help somebody else) instead of trying to help somebody who can't be helped. I would be glad if somebody did that for me.