Quick fix, 1 minute

[andu]

Have to learn how does self thing works in TFS 1.x+ and have to use a local function for this. Future, I'll move it to libs so no workarounds.

local function addTreasureLoot()
    self:addItem(2195, 1)
    return true
end

function onSay(player, words, param)
    local chest = Game.createItem(1740, 1, player:getPosition())
    chest:addTreasureLoot() -- adding loot to chest

    return true
end

8: attempt to call method 'addTreasureLoot' (a nil value)

 

[Nekiro]

Programming in Lua : 16

 

[Infernum]

Have to learn how does self thing works in TFS 1.x+ and have to use a local function for this. Future, I'll move it to libs so no workarounds.

local function addTreasureLoot()
    self:addItem(2195, 1)
    return true
end

function onSay(player, words, param)
    local chest = Game.createItem(1740, 1, player:getPosition())
    chest:addTreasureLoot() -- adding loot to chest

    return true
end

8: attempt to call method 'addTreasureLoot' (a nil value)

View attachment 41092

Object-Oriented Programming | Lua Guide

stigmax.gitbook.io

You're not able to create a class method without it being global, you need to define your custom method inside the Item table, then all item objects will have that new method available.

 

[andu]

When I wrote it in the old way, and it works:

    local function addTreasureLoot(self)
        self:addItem(2195, 1)
...
    addTreasureLoot(chest)

However I saw multiple weird things in latest TFS, where self wasn't declared in function's arguments but function was working with it.
That's why I asked you guys.

 

[Infernum]

Because it doesn't need to be if it uses the : syntax sugar. Class.method(self) is equivalent to classObj:method() (classObj is referred to as self inside the function body). Simply adding the self keyword to a function does not make it a method either.

 

[Aurelion]

local function Container.addTreasureLoot(self)
    self:addItem(2195, 1)
    return true
end

function onSay(player, words, param)
    local chest = Game.createItem(1740, 1, player:getPosition())
    chest:addTreasureLoot() -- adding loot to chest

    return true
end

That is what you wanted to do

 

[andu]

local function Container.addTreasureLoot(self)
    self:addItem(2195, 1)
    return true
end

function onSay(player, words, param)
    local chest = Game.createItem(1740, 1, player:getPosition())
    chest:addTreasureLoot() -- adding loot to chest

    return true
end

That is what you wanted to do

It wont work.