Book Image

Getting Started with SpriteKit

By : Jorge Jordán
Book Image

Getting Started with SpriteKit

By: Jorge Jordán

Overview of this book

SpriteKit is Apple’s game engine to develop native iOS games. Strongly boosted by the Apple Inc., Cupertino, it has increased in popularity since its first release. This book shows you the solutions provided by SpriteKit to help you create any 2D game you can imagine and apply them to create animations that will highlight your existing apps. This book will give you the knowledge you need to apply SpriteKit to your existing apps or create your own games from scratch. Throughout the book, you will develop a complete game. The beautiful designs implemented in the game in this book will easily lead you to learn the basis of 2D game development, including creating and moving sprites, and adding them to a game scene. You will also discover how to apply advanced techniques such as collision detection, action execution, playing music, or running animations to give a more professional aspect to the game. You will finish your first game by learning how to add a main menu and a tutorial, as well as saving and loading data from and to the player’s device. Finally, you will find out how to apply some mobile games techniques such as accelerometer use or touch detection.
Table of Contents (13 chapters)
Getting Started with SpriteKit
About the Author
About the Reviewer

Ending the game

Before going any further, we will need to open the initial project for this chapter, which is similar to the one that we had at the end of the previous chapter. Therefore, unzip, where you will find Unzip this and open the project with Xcode.

We had to look at the code needed to decrease the number of life points as well as the red life bar length. In this section, we will take advantage of this code to end the game when the number of life points is 0.

Usually, when a game is over, everything stops moving and some kind of text alert for the player pops on the screen. So, let's see how we can do this in a SpriteKit project.

For this step, we will need a new label variable. So, let's declare it by adding the following line at the top of GameScene:

private var labelGameOver: SKLabelNode!

Then, add the following block of code in the resetPositionAction action of the initializeEnemyActions method just after self.updateLifeBar() function...