I don't want to put you off, but this is by far the longest project in the series. It's not the most complicated, but it's long, coming in just short of 500 lines in total. That said, I hope it'll be worth it, because the end result is great: we're going to make a Fruit Ninja-style game, where slicing penguins is good and slicing bombs is bad. I think I must unconsciously have something against penguins…
Anyway, in this project you're going to be creating your own enums for the first time, you're going to meet
AVAudioPlayer, you're going to create
SKAction groups, you're going to create shapes with
UIBezierPath, learn about default parameters, and more. So, it's the usual recipe: make something cool, and learn at the same time.
This is the second of two projects that are hard – not because I'm trying to set you back, just because they are more complex than the others. This project is hard because you need to write a lot of code before you can start to see results, which I personally find frustrating. I much prefer it when I can write a few lines, see the result, write a few lines more, see the result again, and so on. That isn't possible here, so I suggest you make some coffee before you begin.
Still here? OK!
Create a new SpriteKit project in Xcode, name it Project17, then do the usual cleaning job to create a completely empty SpriteKit project: remove all the code from
touchesBegan(), change the anchor point and size of GameScene.sks, and so on – if you don’t remember all the steps, just look back to project 14 or 11.
You should also download the files for this project from GitHub (https://github.com/twostraws/HackingWithSwift), then copy its Content folder into your Xcode project.
Please force the app to run only on landscape iPads before continuing.
Reminder: Don’t forget to use a real device for this project, or, if you must, the lowest-spec iPad in the simulator.