Error using waitforduration function - swift

Question

import SpriteKit
class GameScene: SKScene {
var greenBall = SKSpriteNode(imageNamed: "greenball")
var redBall = SKSpriteNode(imageNamed: "redball")
override func didMoveToView(view: SKView) {
let borderBody = SKPhysicsBody(edgeLoopFromRect: self.frame)
borderBody.friction = 0
self.physicsBody = borderBody
backgroundColor = SKColor.purpleColor()
//
var bar0 = SKSpriteNode(imageNamed: "bar0")
var bar1 = SKSpriteNode(imageNamed: "bar1")
var bar2 = SKSpriteNode(imageNamed: "bar2")
var bar3 = SKSpriteNode(imageNamed: "bar3")
var bar4 = SKSpriteNode(imageNamed: "bar4")
var bar5 = SKSpriteNode(imageNamed: "bar5")
var bars = SKSpriteNode(imageNamed: "bar\(arc4random_uniform(6))")
var bartest = SKSpriteNode(imageNamed: "bar0")
bartest.position = CGPoint(x: frame.midX, y: frame.size.height * 0.633)
addChild(bartest)
var barra = SKShapeNode(rectOfSize: CGSize(width: frame.size.width, height: 10))
barra.name = "bar"
barra.fillColor = SKColor.whiteColor()
barra.position = CGPoint(x: frame.midX, y: frame.midY)
greenBall.position = CGPoint(x: frame.midX-100, y: frame.midY)
greenBall.yScale = 2
greenBall.xScale = 2
redBall.position = CGPoint(x: frame.midX+100, y: frame.midY)
redBall.yScale = 2
redBall.xScale = 2
self.addChild(redBall)
self.addChild(greenBall)
self.addChild(barra)
func makeBars() {
var randomTopOrBot = arc4random_uniform(2)
if randomTopOrBot == 0 {
var MaxY = frame.size.height * 0.951
var MinY = (frame.size.height * 0.633)-bars.size.height
var Range = CGFloat(MaxY - MinY)
var barsSpawnX = (frame.midX)
var barSpawnY = CGFloat(arc4random_uniform(UInt32(Range)))
bars.position = CGPoint(x: frame.midX, y: barSpawnY)
addChild(bars)
} else {
var MaxY = frame.size.height * 0.951
var MinY = (frame.size.height * 0.633)-bars.size.height
var Range = CGFloat(MaxY - MinY)
var barsSpawnX = (frame.midX)
var randomBetweenRange = CGFloat(arc4random_uniform(UInt32((Range))))
bars.position = CGPoint(x: frame.midX, y: (MinY+randomBetweenRange))
println(frame.size.height * 0.633)
addChild(bars)
}
}
let wait = SKAction.waitForDuration(3, withRange: 2)
let spawn = SKAction.runBlock { makeBars <--- this is where it's saying the problem is()
}
let sequence = SKAction.sequence([wait, spawn])
self.runAction(SKAction.repeatActionForever(sequence))
edit: So basically I've got 2 spawn locations I'm picking from, I randomly decide between the two with a random number, and now I'm wanting to apply the timer to the function makeBars, but it's telling me I can't reference the local function
This is giving me an error that says "cannot reference a local function with captures from another local function".
How can I fix this?

Answer 1

You declared your makerbars() method inside the didMoveToView method. So it was a function nesting problem after all, given the full code I was able to see the true issue.
Change your code to my modified and corrected version below:
import SpriteKit
class GameScene: SKScene {
var greenBall = SKSpriteNode(imageNamed: "greenball")
var redBall = SKSpriteNode(imageNamed: "redball")
override func didMoveToView(view: SKView) {
let borderBody = SKPhysicsBody(edgeLoopFromRect: self.frame)
borderBody.friction = 0
self.physicsBody = borderBody
backgroundColor = SKColor.purpleColor()
//
var bar0 = SKSpriteNode(imageNamed: "bar0")
var bar1 = SKSpriteNode(imageNamed: "bar1")
var bar2 = SKSpriteNode(imageNamed: "bar2")
var bar3 = SKSpriteNode(imageNamed: "bar3")
var bar4 = SKSpriteNode(imageNamed: "bar4")
var bar5 = SKSpriteNode(imageNamed: "bar5")
var bartest = SKSpriteNode(imageNamed: "bar0")
bartest.position = CGPoint(x: frame.midX, y: frame.size.height * 0.633)
addChild(bartest)
var barra = SKShapeNode(rectOfSize: CGSize(width: frame.size.width, height: 10))
barra.name = "bar"
barra.fillColor = SKColor.whiteColor()
barra.position = CGPoint(x: frame.midX, y: frame.midY)
greenBall.position = CGPoint(x: frame.midX-100, y: frame.midY)
greenBall.yScale = 2
greenBall.xScale = 2
redBall.position = CGPoint(x: frame.midX+100, y: frame.midY)
redBall.yScale = 2
redBall.xScale = 2
self.addChild(redBall)
self.addChild(greenBall)
self.addChild(barra)
let wait = SKAction.waitForDuration(3, withRange: 2)
let spawn = SKAction.runBlock { self.makeBars() }
let sequence = SKAction.sequence([wait, spawn])
self.runAction(SKAction.repeatActionForever(sequence))
}
func makeBars() {
var bars = SKSpriteNode(imageNamed: "bar\(arc4random_uniform(6))")
var randomTopOrBot = arc4random_uniform(2)
if randomTopOrBot == 0 {
var MaxY = frame.size.height * 0.951
var MinY = (frame.size.height * 0.633)-bars.size.height
var Range = CGFloat(MaxY - MinY)
var barsSpawnX = (frame.midX)
var barSpawnY = CGFloat(arc4random_uniform(UInt32(Range)))
bars.position = CGPoint(x: frame.midX, y: barSpawnY)
addChild(bars)
} else {
var MaxY = frame.size.height * 0.951
var MinY = (frame.size.height * 0.633)-bars.size.height
var Range = CGFloat(MaxY - MinY)
var barsSpawnX = (frame.midX)
var randomBetweenRange = CGFloat(arc4random_uniform(UInt32((Range))))
bars.position = CGPoint(x: frame.midX, y: (MinY+randomBetweenRange))
println(frame.size.height * 0.633)
addChild(bars)
}
}
}