SpriteKit: Move Whole Scene

Question

I want to add a specific number of squares to a scene. When I do this a part of the square is outside the view. Is it possible to move the whole scene on the y-axis?

Answer 1

I tried and it looks like the scene itself can't be moved. An alternitive approach is to add an SKNode to the scene which represents the whole world. Add all other elements to the world node. Now you can move this node if you want to move the whole scene. I'm working on a short tutorial about that in my Blog. Here's my current code:

import SpriteKit

class GameScene: SKScene {

// Declare the needed nodes
var worldNode: SKNode?
var spriteNode: SKSpriteNode?
var nodeWidth: CGFloat = 0.0

override func didMoveToView(view: SKView) {

    // Setup world
    worldNode = SKNode()
    self.addChild(worldNode!)

    // Setup sprite
    spriteNode = SKSpriteNode(imageNamed: "Spaceship")
    spriteNode?.position = CGPoint(x:CGRectGetMidX(self.frame), y:CGRectGetMidY(self.frame))
    spriteNode?.xScale = 0.1
    spriteNode?.yScale = 0.1
    spriteNode?.zPosition = 10
    self.addChild(spriteNode!)

    // Setup backgrounds
    // Image of left and right node must be identical
    let leftNode = SKSpriteNode(imageNamed: "left")
    let middleNode = SKSpriteNode(imageNamed: "right")
    let rightNode = SKSpriteNode(imageNamed: "left")

    nodeWidth = leftNode.frame.size.width

    leftNode.anchorPoint = CGPoint(x: 0, y: 0)
    leftNode.position = CGPoint(x: 0, y: 0)
    middleNode.anchorPoint = CGPoint(x: 0, y: 0)
    middleNode.position = CGPoint(x: nodeWidth, y: 0)
    rightNode.anchorPoint = CGPoint(x: 0, y: 0)
    rightNode.position = CGPoint(x: nodeWidth * 2, y: 0)

    worldNode!.addChild(leftNode)
    worldNode!.addChild(rightNode)
    worldNode!.addChild(middleNode)


}


var xOrgPosition: CGFloat = 0
override func touchesMoved(touches: Set<UITouch>, withEvent event: UIEvent?) {

    for touch in touches {

        let xTouchPosition = touch.locationInNode(self).x
        if xOrgPosition != 0.0 {
            let xNewPosition = worldNode!.position.x + (xOrgPosition - xTouchPosition)

            if xNewPosition <= -(2 * nodeWidth) {
                // right end reached
                worldNode!.position = CGPoint(x: 0, y: 0)
                print("Right end reached")
            } else if xNewPosition >= 0 {
                // left end reached
                worldNode!.position = CGPoint(x: -(2 * nodeWidth), y: 0)
                print("Left end reached")
            } else {

                worldNode!.position = CGPoint(x: xNewPosition, y: 0)
            }
        }
        xOrgPosition = xTouchPosition
    }
}

override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) {
    // Reset value for the next swipe gesture
    xOrgPosition = 0
}

override func update(currentTime: CFTimeInterval) {
    /* Called before each frame is rendered */
}

}