CODEWITHSUNDEEP
luacoronasdk
Flynn Dale
Flynn Dale

Reputation: 1

Variables inside Functions (Corona Lua)

I've searched everywhere for an answer on how to change a variable inside a function. I have tried many different solutions but none have worked so far.

My plan is to change a variable named 'stateRed' inside a function which is run when a button is pressed. When the function is run, the variables will change to 'READY'. I will then use this variable to run a separate chunk of code (the actual game). There are two of these buttons.

My code looks something like this:

function ReadyRed()
stateRed = 'READY'
stateBtnRed = widget.newButton
{
    defaultFile = "ready_red.png",
    overFile = "unready_red.png",
    label = "Ready",
    emboss = true,
    onPress = unreadyStateRed,
}
stateBtnRed.rotation = 90; stateBtnRed.width = 90; stateBtnRed.height = 90; stateBtnRed.x = display.contentWidth / 2 - 170; stateBtnRed.y = display.contentHeight - 270
return stateRed
end

function UnreadyRed()
local stateRed = 'UNREADY'
stateBtnRed = widget.newButton
{
    defaultFile = "unready_red.png",
    overFile = "ready_red.png",
    label = "Unready",
    emboss = true,
    onPress = readyStateRed,
}
stateBtnRed.rotation = 90; stateBtnRed.width = 90; stateBtnRed.height = 90; stateBtnRed.x = display.contentWidth / 2 - 170; stateBtnRed.y = display.contentHeight - 270
return stateRed
end

The code that starts the game looks like this:

if stateRed == 'READY' and stateBlue == 'Ready' then

Upvotes: 0

Views: 106

Answers (1)

ldurniat
ldurniat

Reputation: 1702

If variable stateRed is global then remove local keyword stand before variable name i.e.

function UnreadyRed()
    stateRed = 'UNREADY'
    ...
end

Note:

  • You probably don't need return stateRed in ReadyRed and UnreadyRed functions since stateRed is global variable.
  • Use one notation style. I recommended you Camel Case notation

Upvotes: 2

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