Book Image

iOS Game Development By Example

By : Samanyu Chopra
Book Image

iOS Game Development By Example

By: Samanyu Chopra

Overview of this book

Game development has always been an exciting subject for game enthusiasts and players and iOS game development takes a big piece of this cake in terms of perpetuating growth and creativity. With the newest version of iOS and Sprite Kit, comes a series of breathtaking features such as Metal rendering support, camera nodes, and a new and improved Scene Editor. Conceptualizing a game is a dream for both young and old. Sprite Kit is an exciting framework supported by Apple within the iOS development environment. With Sprite Kit, creating stunning games has become an easy avenue. Starting with the basics of game development and swift language, this book will guide you to create your own fully functional game. Dive in and learn how to build and deploy a game on your iOS platform using Sprite Kit game engine. Go on a detailed journey of game development on the iOS platform using the Sprite Kit game engine. Learn about various features implemented in iOS 8 that further increase the essence of game development using Sprite Kit. Build an endless runner game and implement features like physics bodies, character animations, scoring and other essential elements in a game. You will successfully conceive a 2D game along with discovering the path to reach the pinnacle of iOS game development. By the end of the book, you will not only have created an endless runner game but also have in-depth knowledge of creating larger games on the iOS platform. Style and approach An easy-to-follow, comprehensive guide that makes your learning experience more intriguing by gradually developing a Sprite Kit game. This book discusses each topic in detail making sure you attain a clear vision of the subject.

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Table of Contents (17 chapters)
iOS Game Development By Example
iOS Game Development By Example
Credits
Credits
About the Author
About the Author
About the Reviewers
About the Reviewers
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
An Introduction to Sprite Kit
An Introduction to Sprite Kit
What's new in iOS 8?
Getting to know Swift
Getting to know Sprite Kit
Advantages of Sprite Kit
Elements of Sprite Kit
Features of Sprite Kit
Setting up a project
Result
Summary
2
Scenes in Sprite Kit
Scenes in Sprite Kit
Device orientation in Sprite Kit
Orientation in our project
Revisiting project elements
Adjusting the project
What is a scene?
Coordinate system
Creating a scene
Creating a node tree
Drawing order for a node tree
Adding the first scene in our game
Adding another scene to our game
A transition from one scene to another
Setting animation play during transition
Creating transition objects
Adding transition in our game
Summary
3
Sprites
Sprites
SKSpriteNode
The properties of SKSpriteNode
Adding a sprite without using textures
Working with texture objects
Preloading textures into memory
Summary
4
Nodes in Sprite Kit
Nodes in Sprite Kit
All you need to know about nodes
Creating subclasses for our Platformer game
Summary
5
Physics in Sprite Kit
Physics in Sprite Kit
Simulating physics in Sprite Kit
SKPhysicsBody
Summary
6
Animating Sprites, Controls, and SceneKit
Animating Sprites, Controls, and SceneKit
Animating nodes
Creating actions
Adding controls in Sprite Kit
An introduction to SceneKit
Adding animations and controls in our Platformer game
Summary
7
Particle Effects and Shaders
Particle Effects and Shaders
Particle effects
The SKEmitter node
Creating the particle effect
Shaders
Summary
8
Handling Multiple Scenes and Levels
Handling Multiple Scenes and Levels
Optimizing game levels
Adding levels in our Platformer game
Adding the pause functionality
Adding the NODE MENU button
Summary
9
Performance Enhancement and Extras
Performance Enhancement and Extras
Performance enhancement
Measuring performance with instruments
A scoring system in a game
Adding sound into a game
Animation frames using SKTexture
Summary
10
Revisiting Our Game and More on iOS 9
Revisiting Our Game and More on iOS 9
A recap on the development process of our Platformer game
Working further on the Platformer game
An introduction to Game Center
What's new in iOS 9
Summary
Index
Index

Chapter 5. Physics in Sprite Kit

In previous chapters, we had gone through essentials to develop a game in Sprite Kit. Also, we have already developed starting scenes, which are different screen views associated with menu items.

To recap the previous chapter, where we discussed about nodes in detail, we studied the SKNode class and its associated properties and functions. Along with this, we discussed about building a node tree and actions on a node tree. We also applied major subclasses in our game, such as SKLabelNode, SKCropNode, SKShapeNode, SKEmitterNode, SKLightNode, and SKVideoNode to create the menu scene. Now, the time has come to venture further into Sprite Kit.

In the real world we are affected by many physical laws, such as mass, gravity, velocity, and so on. To make a game more realistic, Sprite Kit provides us with some classes and functions, which are used to make nodes act like bodies as in a real environment. By applying these classes to characters, environment, and so on...

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