Spawning down the middle of the screen - swift

Question

Is there a way to spawn an SKSpriteNode continuously down the middle of the screen. For example I have a circle that I want to spawn in the middle of the x axis and then for that node to spawn all the way down the screen?
These circles are different colours so when they spawn is there a way to randomly change the the colour of the circles when they are spawned?
I understand I can spawn them individually but is there a better way? ( I am using SpriteKit on swift)

Answer 1

You need to learn some basics bruh.
Learn about For loops, arrays and arc4random.
var circleDiameter: CGFloat = 80.0
for var y = self.frame.height; y > 0; y = y - circleDiameter
{
let coloroptions = [UIColor.greenColor(), UIColor.blueColor(), UIColor.redColor()]
let randomNumber = Int(arc4random_uniform(UInt32(coloroptions.count)))
let color = coloroptions[randomNumber]
var rect = CGRectMake(self.frame.width / 2, y, circleDiameter, circleDiameter)
var circle = SKShapeNode()
circle.path = UIBezierPath(ovalInRect: rect).CGPath
circle.fillColor = color
circle.lineWidth = 0
circle.physicsBody = SKPhysicsBody(circleOfRadius: circle.frame.width / 2)
circle.physicsBody?.dynamic = false
self.addChild(circle)
}