CODEWITHSUNDEEP
iphoneswiftsprite-kit
Eliko
Eliko

Reputation: 1137

Treat every node in SpriteKit Swift

Every time I click the screen I make a new SKShapeNode of a circle.

I tried to make the next thing: Whenever the new SKShapeNode get under the ground (the ground y is half of the screen) - he becomes green. So I tried this:

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
newestBall = SKShapeNode(circleOfRadius: 10)
        newestBall.physicsBody = SKPhysicsBody(circleOfRadius: newestBall.frame.height / 2)
        newestBall.position = CGPoint(x: CGRectGetMidX(self.frame) ,y: self.frame.size.height - newBall.frame.height)
        newestBall.fillColor = SKColor.blueColor()
        newestBall.strokeColor = SKColor.blackColor()
        newestBall.glowWidth = 1.0
        newestBall.zPosition = 9
        newestBall.physicsBody?.dynamic = true
        newestBall.physicsBody?.allowsRotation = false
        newestBall.physicsBody?.friction = 0
        newestBall.physicsBody?.restitution = 1
        newestBall.physicsBody?.linearDamping = 0
        newestBall.physicsBody?.angularDamping = 0
        newestBall.physicsBody?.categoryBitMask = ballsGroup
}
override func update(currentTime: CFTimeInterval) {
if newestBall.position.y < ground.position.y {
            newestBall.fillColor = SKColor.greenColor()
        }
}

And it works! BUT whenever I click twice and create 2 balls (and the first ball still didn't make it under the ground) only the last ball becomes green because he is newestBall.

I want to make every ball green if he gets under the ground.

Upvotes: 1

Views: 40

Answers (1)

Darvas
Darvas

Reputation: 974

Give your newestBall a name: 

newestBall.name = "Ball"

Then check throught all nodes with name = "Ball" and change color ir requirements ar met

self.enumerateChildNodesWithName("Ball", usingBlock: {
        (node: SKNode!, stop: UnsafeMutablePointer <ObjCBool>) -> Void in
        let shapeNode = node as! SKShapeNode
        if shapeNode < self.ground.position.y {

            shapeNode = SKColor.greenColor()
        }
    })

You can add that to update(). self is parentNode or your newestBall and ground nodes.

Upvotes: 2

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