Locals

[Alienhead]

I wasn't for sure if this was a bug or if it is by design so I figured I'd ask here:

Creating anything inside a Require() file or a component with the keyword Local results in the creation not showing. Be it a mesh, sprite, model or whatever.. 

Example:

This is inside a Component script file.

                    -- label

                    if self.ynCreateDebugLabels then

                        local sp = CreateSprite(world, self.font, "This is a sprite !", 14, TEXT_CENTER)

                        sp:SetPosition(self.UAGCSliders[t]:GetPosition())

                    end

It never shows up in the world. But it does exist as the SetPosition command never throws an error.

This does: work as one would expect but only after declaring it as a Global.

                    -- label

                    if self.ynCreateDebugLabels then

                        sp = CreateSprite(world, self.font, "This is a sprite !", 14, TEXT_CENTER)

                        sp:SetPosition(self.UAGCSliders[t]:GetPosition())

                    end

 

 

 

[Josh]

Makes sense to me. The local variable goes out of scope when the function finishes, and the variable is collected and the value deleted.

In Ultra, we can actually make use the Lua's garbage collection

[Alienhead]

I see, I see...  good to know.

 

[Alienhead]

One last LUA question, and this one puzzles me.

I have a file Require() I use for general utility stuff..  Inside the file is a bunch of functions.

I can add a sprite to the table like so.. it prints the name fine. 

 

 

function AddSpriteLabelToTable(sprite)

 

    if splabel == nil then splabel = {} end

 

    table.insert ( splabel, {

        sprite = sprite,

    })

 

    for t, s in ipairs ( splabel ) do

        consolepad:addtext(s.sprite,name)

    end

 

end

When calling an update function that access this global table I get all kinds of trouble. Usually always resulting in nil or missing table.

 

 

function UpdateSpriteLabels()

 

    for t, s in pairs ( splabel ) do

        consolepad:addtext(s.sprite,name)

    end

 

end

These functions are located in the same Require() file, but oddly trying to access the table created in the AddSpriteLabelToTable function  results in error.

Do all my tables need to be created on the top level in order for the entire project to access them? be it Require() files or component  scripts? 

LE allowed this kinda of access, I was just wondering if this is something new and if so where do I need to define global tables that all scripts can access?

[Josh]

I am not sure. Do you know how to set breakpoints in VSCode? That might allow you to view the global vars.

[Alienhead]

yes I will attempt to find where it breaks.. But I can tell you now the function does not recognize the table at all.  This holds true when creating a table in a component script as well..

self.atable = {}

table.insert( self.atable, {
somevalue = 10
}

then in a different function of the same script file the table is not recognized

 

[Alienhead]

This works:

 

splabel = {}

 

function AddSpriteLabelToTable(sprite)

 

    table.insert ( splabel, {

        sprite = sprite,

    })

 

end

 

function UpdateSpriteLabels()

 

    for t, s in pairs ( splabel ) do

       consolepad:addtext(s.sprite,name)

    end

 

end

 

 

This does not:

 

function AddSpriteLabelToTable(sprite)

 

    if splabel == nil then splabel = {} end 

 

    table.insert ( splabel, {

        sprite = sprite,

    })

 

end

 

function UpdateSpriteLabels()

 

    for t, s in pairs ( splabel ) do    ---- CRASH  NO SUCH TABLE

       consolepad:addtext(s.sprite,name)

    end

 

end