book

Swift Game Programming for Absolute Beginners

Name: Swift Game Programming for Absolute Beginners
Author: Arjan Egges
ISBN: 9781484206508

by Arjan Egges

July 2015

Beginner

380 pages

9h 17m

English

Apress

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Cover
Title
Copyright
Dedication
Contents at a Glance
Contents
About the Author
About the Technical Reviewer
Acknowledgments
Introduction

Part I: Getting Acquainted
Chapter 1: The Swift Language
Computers and ProgramsProcessors and MemoryProgramsProgramming LanguagesProgramming GamesDeveloping GamesSmall Scale: Edit-Compile-RunLarge Scale: Design-Specify-ImplementBuilding Your First Swift ProgramBuilding Your First Swift GameA Few ObservationsWhat You Have Learned
Chapter 2: Game Programming Basics
Building Blocks of a GameThe Game WorldThe Game LoopThe Game Loop in SwiftThe Structure of a ProgramTypes of ApplicationsFunctionsSyntax DiagramsCalling a FunctionProgram LayoutCommentsInstructions vs. LinesWhitespace and IndentationWhat You Have Learned
Chapter 3: Creating a Game World
Basic Types and VariablesTypesDeclaration and Assignment of VariablesInstructions and ExpressionsOperators and More Complex ExpressionsArithmetic OperatorsPriority of OperatorsOther Numeric TypesThe DiscoWorld GameScope of VariablesWhat You Have Learned
Chapter 4: Game Assets
Locating SpritesLoading and Drawing SpritesResolutions and Aspect RatiosMoving SpritesLoading and Drawing Multiple SpritesConfiguring the Device OrientationMusic and SoundsWhat You Have Learned
Part II: Getting Acquainted
Chapter 5: Reacting to Player Input
Dealing With Touch InputUsing the Touch Location to Change the Game WorldConditional Execution Based on TouchTesting for AlternativesComparison OperatorsLogic OperatorsThe Boolean TypeChanging the Color of the CannonA Few Final RemarksWhat You Have Learned
Chapter 6: A Flying Ball
MethodsParameter Names and LabelsDefault Parameter ValuesReorganizing Instructions into MethodsMoving Between Local and World CoordinatesAdding a Ball to the Game WorldShooting the BallUpdating the Ball PositionFixed Timestep vs. Variable TimestepUpdating the Ball ColorWhat You Have Learned
Chapter 7: Game Object Types
Creating Multiple Objects of the Same TypeClasses as TypesInput Handling in a Separate ClassInitializing ObjectsThe Self KeywordAccessing Other Objects Using Static VariablesThe Double Role of ClassesWriting a Class with Multiple InstancesDealing with Randomness in GamesCalculating a Random Velocity and ColorUpdating the Paint CanWhat You Have Learned
Chapter 8: Colors and Collisions
A Different Way to Represent ColorsControlled Data Access for ObjectsAdding a Computed Property to a ClassHandling Collisions Between the Ball and the CansValues and ReferencesStructsWhat You Have Learned
Chapter 9: Limited Lives
Maintaining the Number of LivesIndicating the Number of Lives to the PlayerExecuting Instructions Multiple TimesA Shorter Notation for Incrementing CountersA More Compact Looping SyntaxA Few Special CasesNo Repeat at AllInfinite RepeatNested RepeatsRestarting the GameWhat You Have Learned
Chapter 10: Organizing Game Objects
Similarities Between Game ObjectsInheritanceGame Objects and InheritanceCannon as a Subclass of ThreeColorGameObjectThe Ball ClassThe PaintCan ClassPolymorphismInheriting from Existing ClassesHierarchies of ClassesWhat You Have Learned
Chapter 11: Finishing the Painter Game
Adding Motion EffectsAdding Sounds and MusicMaintaining a ScoreCharacters and StringsSpecial CharactersAdding App IconsA Few Final RemarksWhat You Have Learned
Part III: Getting Acquainted
Chapter 12: Advanced Input Handling
Creating a Touch ObjectArraysDictionariesOptionalsStoring Multiple TouchesMaking Dealing with Touch Input EasierLinking Touch Events to the Input Helper ClassDragging SpritesWhat You Have Learned
Chapter 13: Game Physics
A Basic Class for Game ObjectsGame Object SubclassesAdding Physics to Game ObjectsInteractionWhat You Have Learned
Chapter 14: Gameplay Programming
Game Object BehaviorActionsUsing Actions to Drop TreasuresSpecial Types of TreasureTurning Treasures Into RocksHandling Physics ContactsWhat You Have Learned
Chapter 15: Game States
Better Layer HandlingAdding a Title ScreenAdding a Button to Show a Help FrameOverlaysWhat You Have Learned
Chapter 16: Finishing the Tut’s Tomb Game
Adding a ScoreControlling AccessUsing a Custom FontAdding GlitterAdding More GlitterAdding Music and Sound EffectsWhat You Have Learned
Part IV: Getting Acquainted
Chapter 17: Menus and Grids
Game Objects in a Grid LayoutClass ExtensionsSetting Up a MenuAdding an On/off ButtonDefining a Slider ButtonCalculating World Positions of Game ObjectsCompleting the Slider ClassWhat You Have Learned
Chapter 18: Game State Management
Basics of Managing Game StatesThe Game State ManagerAssigning Names to NodesAdding States and Switching Between ThemThe Level Menu StateWhat You Have Learned
Chapter 19: Storing and Recalling Game Data
Structure of a LevelReading Data From FilesThe Tile ClassThe Level StateUsing switch to Handle AlternativesLoading Different Kinds of TilesMaintaining the Player’s ProgressWhat You Have Learned
Chapter 20: Interaction Between Game Objects
Defining OperatorsSelecting PenguinsUpdating AnimalsMeeting Other Game ObjectsMaintaining the Number of PairsWhat You Have Learned
Chapter 21: Finishing the Penguin Pairs Game
Showing HintsShowing a Help FrameResetting the LevelMoving to the Next LevelAdding Sound EffectsA Few Final NotesWhat You Have Learned
Part V: Getting Acquainted
Chapter 22: The Main Game Structure
Overview of the Game StructureThe Structure of a LevelWater DropsThe Tile ClassThe LevelState ClassWhat You Have Learned
Chapter 23: Animation
What Is Animation?Texture AtlasesThe Animation ClassSupporting Multiple AnimationsThe Player ClassWhat You Have Learned
Chapter 24: Platform Game Physics
Locking the Character in the Game WorldSetting the Character at the Right PositionJumping …… And FallingCollision DetectionRetrieving Bounding BoxesHandling Character-Tile CollisionsDealing with the CollisionWhat You Have Learned
Chapter 25: Intelligent Enemies
The RocketCreating and Resetting the RocketProgramming the Rocket BehaviorA Patrolling EnemyThe Basic PatrollingEnemy ClassDifferent Types of EnemiesOther Types of EnemiesLoading the Different Types of EnemiesWhat You Have Learned
Chapter 26: Adding Player Interaction
Collecting Water DropsIce BlocksEnemies Colliding With the PlayerAdding Horizontal and Vertical ScrollingWhat You Have Learned
Chapter 27: Finishing the Tick Tick Game
Adding a TimerMaking the Timer Go Faster or SlowerWhen the Timer Reaches ZeroAdding Mountains and CloudsShowing the Help FrameFinalizing the Level ProgressionWhat You Have Learned
Index

Content preview from Swift Game Programming for Absolute Beginners

Chapter 15

Game States

In the previous chapter, you programmed the main gameplay elements of the Tut’s Tomb game. However, the game as it stands is far from complete. For example, nothing happens when the tomb is completely filled with treasures. Also, when you start the program, the game immediately begins without any warning. What is still needed is a way to incorporate menus and overlays in the game so the player can get help or start playing the game. When the player is, for example, in a menu screen, the type of interaction with the game is very different from when the player is solving a level or trying to survive as long as possible. When programming a game, you have to think about how to incorporate these different game states and ...

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Swift Game Programming for Absolute Beginners

by Arjan Egges

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