book

Mastering Unity 2D Game Development - Second Edition

Name: Mastering Unity 2D Game Development - Second Edition
ISBN: 9781786463456

by Dr. Ashley Godbold, Simon Jackson

October 2016

Beginner

506 pages

10h 1m

English

Packt Publishing

Read now

Unlock full access

Mastering Unity 2D Game Development - Second Edition
Mastering Unity 2D Game Development - Second Edition
Credits
About the Authors
About the Reviewer
www.PacktPub.com
eBooks, discount offers, and moreWhy subscribe?
Preface
What this book covers
What you need for this book
Who this book is for
Conventions

Reader feedback
Customer support
Downloading the example code Downloading the color images of this book ErrataPiracyQuestions
1. Overview
Getting assets
Unity's 2D features
2D mode versus 3D modeWorking with spritesSprite RendererSprite EditorSprite sheetsTexture atlasesPhysics 2D
Changes to Unity 5
LicensingComponent accessAnimator changesAudio mixing
Summary
2. Building Your Project and Character
Project overview and structureProject overviewStructureAsset naming
Creating the project
Creating a scene
Sprite system
Importing spritesTexture Type - Sprite (2D and UI)Sprite Mode - Single/Multiple/PolygonPacking TagPixels Per UnitsPivotGenerate Mip MapsFilter ModeDefault settings and per-platform overridesSprite EditorSprite slicerAutomaticGrid By Cell Size and Grid By Cell Count (Manual)View controlsSprite region manipulationImporting our main character
GameObjects and components
Sprite GameObjectsBringing our hero into the scene
Classes
MonoDevelopThe object-orientated designThe game structureThe common game objectThe player object
Planning behaviors
Behaviors for the common game object
Coding with components
Accessing componentsReferencing a componentControlling the hero
Going further
Summary
3. Getting Animated
Fundamentals of sprite animationAnimation clipsAnimation Dope SheetThe time/recording controls (1)Animation drop-down selection (2)The sample rate (frames per second) (3)Animation properties (4)Timeline (5)Curve view (6)The Animation ControllersThe Animator component
Animating the main character
Adding your first Animation ClipSetting up the Animator and default stateAdding the other Animation ClipsPlanning the animation transitionsConnecting the animation statesAccessing controllers from a scriptMaking her stop animating and face the correct direction
Going further
Summary
4. The Town View
Backgrounds and layersTo slice or not to sliceThe town backgroundThe town buildings and roadsThe extra scenery
Building the scene
Adding the town backgroundSprite sorting layersSprite Sorting OrderUpdating the scene sorting layersBuilding out the scene
Working with the camera
Comparing Update, FixedUpdate, and LateUpdateMoving our camera with the playerThe perils of resolutionSetting our aspect ratio and camera parameters
Transitioning and bounds
Towns with bordersJourneying onward
Going further
Summary
5. Working with Unitys UI System
UI CanvasEventSystemCanvas Render ModeScreen Space - OverlayScreen Space - CameraWorld SpaceUsing multiple Canvases
UI Text and Images
UI TextUI Image
UI Layout and Rect Transform
Rect ToolPivotAnchors
UI Buttons
Transition typesText childOn Click ()
Going further
Summary
6. NPCs and Interactions
Considering an RPG
Advanced programming techniques
Singletons and managersThe manager approach - using empty GameObjectsThe singleton approach - using the C# singleton pattern
Communicating between GameObjects
DelegatesThe configurable method patternThe delegation patternCompound delegatesEventsMessagingA better way
Background tasks and coroutines
Enter coroutinesIEnumeratorYieldingStarting coroutinesClosing the gap
Serialization and scripting
Saving and managing asset dataUsing the serialized files in the editorAccessing the .asset files in the code
Adding NPCs and a conversation system to our game
Let the player walk around the NPCStopping the player from walking through the NPCGetting the NPCs talkingThe conversation objectSaving and serializing the object for laterThe conversation componentBuilding a basic conversation systemThe managerStarting a conversationPreparing the UIDisplaying the conversationConnecting the dots
Going further
Summary
7. The World Map
The larger viewTypes of mapFixed mapsGenerated mapsIn-game generated mapsGoing procedural
Creating our game's map
Adding the world mapAdding a player prefab to the overworldAdding places of interest
Leaving town
Creating a NavigationManager scriptBlocking off pathsUpdating build settings to include new scenesChanging scenes
Returning to town
Updating the NavigationManager script
Going further
Summary
8. Encountering Enemies and Running Away
Event systems
Exploring randomness
True randomnessPlanning for random code/generation
Basic Artificial Intelligence
State machines
Defining statesSimple singular choicePlanning for multiple casesState managers
Sensors
Setting up your battle scene
Building the new sceneAdding the first enemySpawning the DragonsCreating the BattleManagerAllowing the player to run awayStarting the battleSaving the map positionStop immediately re-entering battleGoing back to town
Going further
Summary
9. Getting Ready to Fight
Setting up our battle state managerThe battle state managerGetting to the state manager in the codeStarting the battleIntroductory animation
Efficient RPG UI overlays
The adventurer's overlayA context-sensitive overlayModern floating UI approachBalancing the need
Bring on the GUI
Laying out the HUDDisplaying the correct buttons
Going further
Summary
10. The Battle Begins
Designing an interesting battle systemLeveling upBalancing
Preparing to attack a single enemy
Beefing up the enemy AI
The enemy profile/controllerUpdating the Dragon prefabSetting up the enemy profile in the code
Selecting an attack
Adding a visual effect to attack selection
Selecting a target
The selection circle prefabAdding selection logic to the EnemyController class
Attack! Attack!
Using particle effects to represent an attack
Creating the materials for the particle effectsAdding the particlesDisplaying the particles upon attack
Finishing up the battle
Going further
Summary
11. Shopping for Items
Why do we shop?
The power of an item
Building your shop
Laying out your inventory
Rule of 99'Encumbrance systemsSlot-based systemsA mini gameReal world
Creating a shop and inventory
Gathering shop assetsBuilding the shop sceneCreating inventory itemsManaging the shopUpdating the player inventory definitionStocking the shopLinking up the buttonsTurning off the Buy ButtonEntering the shopLeaving the shopManaging your inventoryAdding objects to the player's inventory
Going further
Summary
12. Sound and Music
Choosing the appropriate sound and music
Where to get sound and music for your game
Free resources
Audio listeners and audio sources
Adding background music
Creating a splash screenAdding the audio sourceTransitioning to the next sceneKeeping the music after the scene transition
Adding sound effects
Adding a sound to the buy button
Muting/unmuting audio
Going further
Summary
13. Putting a Bow on It
Building in-game menu structuresThe screensSplash screensLoading screensThe main menuSave slots/level selectionsSettings pagesThe About screenPrivacy policyPause screensAdditional menus (purchasing, achievements, leaderboards, and so on)SocialThe flow
Finishing our splash screen
Building our start screen
Extending the editor
The property drawersExamples property drawersBuilt-in property drawersCustom property drawersCustom editorsThe editor windowGizmosBuilding your editor menusAdding a MenuItem attributeEnabling/disabling a MenuItem attributeAdding shortcut keys to a MenuItem attributeAdding contextual MenuItemsRunning scripts in the Editor folderAlternative approachesThe [InitialiseOnLoad] attributeEditor application callbacksMixing it up
Working with settings
Using PlayerPrefsSerializing your dataSaving data to diskBacking up to the Web
Going further
Summary
14. Deployment and Beyond
Handling platform differencesPreprocessor directives
Pushing code from Unity
Processing assetsProcessing the build
Building your assets
Packaging gotchas
Distributing to mobile
Social network integration
Monetization
PaidPaid with trialAd supportedIn-app purchasesIn-game currency
Going further
Summary

Content preview from Mastering Unity 2D Game Development - Second Edition

Building the scene

Now that we have some assets to build with, we can start building our first town, by placing images within the scene.

Adding the town background

Returning to the scene view, you should see the following:

If, however, we add our town background texture to the scene by dragging it to either the project Hierarchy or the scene view, you will end up with the following:

Our player has vanished! The reason for this is simple: Unity's sprite system has an ordering system that comes in two parts.

Sprite sorting layers

Sorting Layers (Edit ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.

Read now

Unlock full access

More than 5,000 organizations count on O’Reilly

O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.

Julian F.

Head of Cybersecurity

I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.

Addison B.

Field Engineer

I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.

Amir M.

Data Platform Tech Lead

I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.

Mark W.

Embedded Software Engineer

Publisher Resources

ISBN: 9781786463456

Cloud Computing

Data Engineering

Data Science

AI & ML

Programming Languages

Software Architecture

IT/Ops

Security

Design