Beginning Swift Games Development for iOS

Chapter    2

Sprite Kit Scenes and SKNode Positioning

In the previous chapter I talked about what Sprite Kit was and how you can use it to create 2D games. I then jumped right in and showed how to start working with the SKSpriteNode to create a background and player sprite and then showed how to add them to a game scene.

In this chapter, I am going to step back a bit and give you a deeper look at Sprite Kit scenes, including how scenes are built and why the order they are built in can change your game. I will close the chapter with a discussion of Sprite Kit coordinate systems and anchor points as they relate to SKNodes.

What Is an SKScene?

I used the SKScene object in the previous chapter to host the background and player nodes, but I really ...