Neither adding a SKShapeNode nor adding a SKLabelNode to a SKScene appears to work? - skscene

Question

Neither adding a SKShapeNode nor adding a SKLabelNode to a SKScene appears to work?
My gut guesses that I have a coordinate problem .. so here's the short code snippet which I have placed in my GameViewController class:
Note: I've added print statements below to debug.
FYI: I believe the values are wrong because they appear to be Frame coordinates, not Scene Coordinates. Frankly, I'm at a loss how to correct this error.
func addScoreLabelToScene(toScene: SKScene) {
if thisSceneName == "GameScene" {
let circleRadius = Double(100),
circleOffset = Double(30),
labelOffset = Double(10),
//
circlePosX = toScene.frame.size.width/2 - circleRadius - circleOffset,
labelPosX = circlePosX - labelOffset,
circlePosY = toScene.frame.size.height/2 + circleRadius + circleOffset,
labelPosY = circlePosY + labelOffset
// frame.size = 818, 1340
print("circlePosX = \(circlePosX)") // 279
print("circlePosY = \(circlePosY)") // 800
print("labelPosX = \(labelPosX)") // 269
print("labelPosY = \(labelPosY)") // 810
let circle = SKShapeNode(circleOfRadius: circleRadius)
circle.position = CGPoint(x: circlePosX, y: circlePosY)
circle.strokeColor = SKColor.red
circle.lineWidth = 2.0
circle.fillColor = SKColor.white
toScene.addChild(circle)
itsScoreLabel = SKLabelNode(fontNamed: "HelveticaNeue-Bold")
itsScoreLabel!.position = CGPoint(x: labelPosX, y: labelPosY)
itsScoreLabel!.text = "\(thisScore)"
itsScoreLabel!.fontSize = 20
itsScoreLabel!.fontColor = SKColor.blue
toScene.addChild(itsScoreLabel!)
}
} // addScoreLabelToScene
WRT to the above guess about a coordinate problem, I have hard-wired values for the PosX and PosY variables, but no success there.
In addition I have commented out both toScene.addChild() calls (one at a time) with no luck.
To complete the problem description, I have code elsewhere that adds several SKSpriteNodes with no problem.
So, what mammoth error am I committing?

Answer 1

As already commented above, I owe kelin above immeasurable thanks for motivating me to check my code again!
The central issue centers on specifying .zPosition = 10 or any very large number so the 2 Objects are not buried under everything.
So ... the NEW code which does it right:
func addScoreLabelToScene(toScene: SKScene) {
if thisSceneName == "GameScene" {
let circleRadius = Double(50), // lots of messing with #s involved
circleOffsetX = Double(25)
#if os(iOS)
let circleOffsetY = Double(105)
#elseif os(tvOS)
let circleOffsetY = Double(25)
#endif
// NR because we've centered the label within the circle.
// Nevertheless, as noted below, we still have to position it
// for horizontal + vertical alignment to take effect.
let labelOffsetX = Double(0),
labelOffsetY = Double(0),
//
circlePosX = toScene.frame.size.width/2 - circleRadius - circleOffsetX,
labelPosX = circlePosX - labelOffsetX,
circlePosY = toScene.frame.size.height/2 - circleRadius - circleOffsetY,
labelPosY = circlePosY - labelOffsetY
// added these print statements to debug:
// frame.size = 818, 1340
print("circlePosX = \(circlePosX)") // 334 = 818/2 - 50 - 25
print("circlePosY = \(circlePosY)") // 515 = 1340/2 - 50 - 105
print("labelPosX = \(labelPosX)") // 334 = 334 - 0
print("labelPosY = \(labelPosY)") // 515 = 515 - 0
let circle = SKShapeNode(circleOfRadius: circleRadius)
circle.zPosition = 10 // otherwise, the Object will be buried at the bottom
circle.position = CGPoint(x: circlePosX, y: circlePosY)
circle.strokeColor = SKColor.red
circle.lineWidth = 6.0
circle.fillColor = SKColor.white
toScene.addChild(circle)
itsScoreLabel = SKLabelNode(fontNamed: "HelveticaNeue-Bold")
itsScoreLabel!.zPosition = 10
// still gotta position it for alignment to take affect
itsScoreLabel!.position = CGPoint(x: labelPosX, y: labelPosY)
itsScoreLabel!.horizontalAlignmentMode = .center
itsScoreLabel!.verticalAlignmentMode = .center
itsScoreLabel!.text = "\(thisScore)"
itsScoreLabel!.fontSize = 30
itsScoreLabel!.fontColor = SKColor.blue
toScene.addChild(itsScoreLabel!)
}
} // addScoreLabelToScene