CODEWITHSUNDEEP
swift
Sam321pbs
Sam321pbs

Reputation: 301

Trying to initialize super class property in swift but run into errors

I am new to swift and I am currently learning about initializers. I am running into an issue with overriding the parent class initializer. I get a compiler error "Use of 'self' in property access 'ImageTexture' before super init initializes self"

I would like a new image to get used when special badge class is called

here is the special badge class where I get the error

class SpecialBadge: Badge {

    enum BadgeAnimation: Int {
        case GrowAndShrink = 0, Rotate, Shake
    }

    override init(requestType: UDRequestType) {

        let animation = BadgeAnimation(rawValue: Int(arc4random_uniform(3)))
        self.imageTexture = SKTexture(imageNamed: "BadgeTeal")
        super.init(requestType: requestType)


        switch animation! {
        case .GrowAndShrink:
            growShrink()

        case .Rotate:
            rotate()

        case .Shake:
            shake()
        }
    }
}

I get an error when I call on line:

self.imageTexture = SKTexture(imageNamed: "BadgeTeal")

before calling super.init(requestType: requestType)

My parent class;

class Badge: SKSpriteNode {

    var requestType: UDRequestType
    var imageTexture: SKTexture?

    init(requestType: UDRequestType) {
        self.requestType = requestType

        if let texture = imageTexture {
            super.init(texture: texture, color: UIColor.clearColor(), size: CGSizeMake(48, 48))
        } else {
            let newTexture = SKTexture(imageNamed: "BadgeMagenta")
            super.init(texture: newTexture, color: UIColor.clearColor(), size: CGSizeMake(48, 48))
        }
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
}

I can't figure out how to initialize imageTexture so it can use a different image before calling the initializer in SpecialBadge, any help would be greatly appreciated

Upvotes: 0

Views: 51

Answers (1)

matt
matt

Reputation: 535231

It's just a matter of the order in which you do things. This is illegal:

self.imageTexture = SKTexture(imageNamed: "BadgeTeal")
super.init(requestType: requestType)

This is legal:

super.init(requestType: requestType)
self.imageTexture = SKTexture(imageNamed: "BadgeTeal")

The rule is that you must complete initialization of the superclass before doing anything special to your own class.

Upvotes: 2

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