How can I access an array in one of my classes?

Question

Created May ’21

Replies 3

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myGV is a structure where I store a handful of global variables.

The following are all sub-classes of SKSpriteNode: I have a class called guessingBar which holds 6 guessSlots. The former class has an array of the guessSlots for me to loop through.

I just don't know the syntax of how to access the array.

myGV holds multiple variables, so the SKSpriteNode guessBar can be found at:

myGV.guessBar

I expected to be able to read the array with:
myGV.guessBar.guessSlots[x] but as you can see from the debugger screenshot, I cannot.

In the screenshot you can see that everything is initialized. Am I missing some silly typo, or is the syntax escaping me?

http: //98.7.37.117/s.png

Answered by SergioDCQ in 676976022

All my fault. It's right there in the debugger too. My SKSpriteNode should be declared as the subclass, not an SKSpriteNode. That's why I can't access the array. The array exists in my subclass.

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Answer 1

Claude31 OP

May ’21

I cannot access the screenshot.
It would be much better to show the code itself.

I have a class called guessingBar

guessingBar is the class of guessBar ?
If so, you should name it starting with uppercase: GuessingBar

guessingBar which holds 6 guessSlots

So guessSlots is an Array, of what ?
Or do you have 6 different guessSlots vars (guessSlots1, guessSlots2…)

myGV is a structure

what is the name of the struct ?
Should be MyGV

myGV is an instance of the struct ? Exact ?
var myGV : MyGV
How did you initialise it ?

So, there is too much guessing here, please make it clear.

I expected to be able to read the array

Tell what error you get

0

Answer 2

SergioDCQ OP

May ’21

I cannot access the screenshot.

I wish I knew what was up with my server, sorry

myGV is a structure to hold a few global variables.

myGV.guessBar = GuessBar : SKSpriteNode

The GuessBar has 6 children, GuessSlot : SKSpriteNode. GuessBar has an array that has all six instances of them.

Here is the code for GuessBar:

class GuessBar : SKSpriteNode{
    var guessSlots : [GuessSlot] = []

    init(color: SKColor, size: CGSize) {
       super.init(texture: nil, color: color, size: size)
    }
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
 }

Here is the code where I fill the arrays in the guessBar

func createGuessBar(color: SKColor, size: CGSize, factor: Int) -> GuessBar
{
    let myGuessBar = GuessBar(color : color, size: size)

    //other unrelated code

    for x in 0...5{

        let mGuessSlot = GuessSlot(color: .clear, size: CGSize(width: iFactor, height: rFactor), width: myGuessBar.size.width,  iFactor: x, guessBarRef: myGuessBar)
        myGuessBar.guessSlots.append(mGuessSlot)
    }
    //other unrelated code

    return myGuessBar

}

So the exact info from the debugger reads:

myGV.guessBar = (SKSpriteNode?) 0x0000600001984580

*SpriteKit.SKSpriteNode (SKSpriteNode)

*guessSlots ([GuessAgain.GuessSlot]) 6 values

myGV.guessBar.guessSlots = Invalid Expression

The way I see it, everything is running fine. If I expand the guessSlots in the debugger it lists each value. I just can't get the syntax right, going by the last line in the debugger, to access that array from my main structure myGV.

0

Answer 3

SergioDCQ OP

Jun ’21

Accepted Answer

All my fault. It's right there in the debugger too. My SKSpriteNode should be declared as the subclass, not an SKSpriteNode. That's why I can't access the array. The array exists in my subclass.

0