Question

I am using director class for scene transitions and i need to use the variable in a class in another class. So how can i call it?

     local a= require "welcome"

variableName is text display object in welcome class

     print(a.variableName.text)

However i get nil.

Could you help me out? Thanks

Answer 1

Make the variable a property of the returned table:

local Class = {}

function Class.new()
    local class = {}

    class.variableName = display.newText("Hello mom!", 100, 100, "Helvetica", 18)

    return class
end

return Class

Then you can reference it:

local a = require ("class").new()

print(a.variableName.text)

OR

If you want to pass variables between the screens in Rauber’s Director Class, you can:

local parameters = {p1="some text", p2="some more text"}

director:changeScene(parameters, "sceneName")

In your screen, make the new function accept the parameters:

function new(parameters)
    print(parameters.p1, parameters.p2) --> some text   some more text
end

OR

Put _G in front of your variable

_G.myGlobalVar = "some awesome stuff"

Then you can reference it in another class

print(_G.myGlobalVar) --> some awesome stuff