How do you update something in an SKAction while using repeat repeatForever? - ios

Question

As you'll see below, I'm trying to update the durationNumber, so that the colorSwitch object turns faster. The durationNumber does update, but colorSwitch doesn't rotate faster. How do I accomplish this?
func turnWheel() {
var durationNumber = 2.0
let rotateAction = SKAction.rotate(byAngle: .pi/2, duration: durationNumber)
let switchAction = SKAction.run {
if let newState = SwitchState(rawValue: self.switchState.rawValue + 1) {
self.switchState = newState
} else {
self.switchState = .green
}
if self.score > self.scoreCheck {
self.scoreCheck += 1
durationNumber *= 0.5
}
}
colorSwitch.run(SKAction.repeatForever(SKAction.sequence([rotateAction, switchAction])))
}

Answer 1

You're changing the value of the local variable, but not changing the SKAction object itself. You need to change rotateAction.duration to have any effect on the action itself.
if self.score > self.scoreCheck {
self.scoreCheck += 1
durationNumber *= 0.5
rotateAction.duration = durationNumber
}

Answer 2

Do not update your duration, instead update your speed
func turnWheel() {
var durationNumber = 2.0
let rotateAction = SKAction.rotate(byAngle: .pi/2, duration: durationNumber)
let switchAction = SKAction.run {
if let newState = SwitchState(rawValue: self.switchState.rawValue + 1) {
self.switchState = newState
} else {
self.switchState = .green
}
if self.score > self.scoreCheck {
self.scoreCheck += 1
colorSwitch.speed *= 2
}
}
colorSwitch.run(SKAction.repeatForever(SKAction.sequence([rotateAction, switchAction])))
}