Swift Unable to Override Variables in Subclass - swift

Question

I am working on a macOS project in Swift, and I've been having a lot of trouble with overriding variables in a few classes I've made. In classTwo Xcode is presenting the error Cannot override with a stored property 'texture' on the line;
override var texture: SKTexture?
This is a bit of the code I'm using.
public class classOne: SKSpriteNode {
required public init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
// Other functions
}
And the second class;
class classTwo: classOne {
override var texture: SKTexture? // Cannot override with a stored property 'texture'
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
// Some other functions
}
I do plan to actually define a specific texture for classTwo, but for now I couldn't even make this work.. Thanks in advance, and I'd appreciate any help on solving this issue!

Answer 1

EDIT
#Knight0fDragon was right, a better approach is to use super.texture
class classTwo: classOne {
override var texture:SKTexture? {
get {
return super.texture
}
set {
super.texture = newValue
}
}
}
In order to override the property you need to initialise it. In other words, giving it an initial value. If you don't want, here is a workaround:
class classTwo: classOne {
var _texture:SKTexture
override public var texture: SKTexture? {
get {
return _texture
}
set {
_texture = newValue!
}
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
// Some other functions
}

Answer 2

Try this
override var texture: SKTexture? {
get {
return SKTexture()
}
set {
}
}
obviously returning something a bit more useful.

Answer 3

In your subclass you need to do this.
override var texture:SKTexture? {
get {
return super.texture
}
set {
super.texture = newValue
}
}

Answer 4

From all my reading, I do not think overriding is the approach you want, you want to create a convenience init
class classTwo: classOne {
convenience init()
{
let texture = SKTexture(imageNamed:"myImage")
self.init(texture,.white,texure.size)
}
required init?(coder aDecoder: NSCoder) {
super.init(coder:aDecoder)
}
}
Then to use it, you just need to do classTwo()
(Note, this has not been tested, so I may have typos, the general concept is here though)