book

OpenGL Game Development By Example

Name: OpenGL Game Development By Example
ISBN: 9781783288199

by Stephen Madsen, Robert Madsen

March 2016

Beginner to intermediate

340 pages

6h 51m

English

Packt Publishing

Read now

Unlock full access

OpenGL Game Development By Example
Table of Contents
OpenGL Game Development By Example
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Support files, eBooks, discount offers, and moreWhy subscribe?Free access for Packt account holders
Preface
What this book covers
What you need for this book
Who this book is for

Conventions
Reader feedback
Customer support
Downloading the example codeErrataPiracyQuestions
1. Building the Foundation
Introducing the development environmentA quick look at Visual StudioStart screenThe Solution Explorer panelThe Standard Toolbar panelThe code windowThe output windowStarting your project
The game loop
The game structureInitializationThe game loopShutdownCreating the game structurePort of accessThe Windows message loop
Introducing OpenGL
What is OpenGL?The other GLDownloading OpenGLAdding OpenGL to the projectLinking to the OpenGL library
Summary
2. Your Point of View
Plotting your revengeThe OpenGL coordinate systemMaking your pointUnderstanding the codeHeader filesInitializing OpenGLThe main entry pointThe update functionDrawing the pointsRunning the programStretching your pointGetting primitiveA triangle by any other nameA primitive exampleFrom triangles to models
Introducing textures
Using textures to fill the trianglesA matter of referenceHanging out in the quadCoding the quadRendering a textureLoading the textureTexture wrappingCreating a textured quad
Putting the pieces together
Summary
3. A Matter of Character
Spritely speakingSprites versus non-spritesFlipbook animationFramed animation
Creating sprites
Working with PNGsLinking to the SOIL libraryIncluding the SOIL header fileOpening an image fileCoding a sprite classCreating sprite framesSaving each frameLoading a sprite from individual texturesCreating a sprite sheetLoading a sprite sheetLoading our sprites
Rendering
Adding a render to the game loopImplementing the main Render functionImplementing Render in the Sprite classUV mappingOne more detail
A moving example
Adding update to the game loopImplementing the main Update callImplementing Update in the Sprite classCharacter movementUsing delta timeCalculating delta timeFlippingScrolling the background
Using an atlas
Summary
4. Control Freak
A penny for your inputThe keyboard inputUsing the mouseTouchOther inputs
Someone is listening
The WndProc event listenerHandling the message queueHandling mouse and keyboard inputsCreating the Input classVirtual key codesQuerying for inputImplementing the Input classAdding input to the game loopProcessing our inputChanges to the Sprite class
Graphical User Interface
Creating a buttonEnhancing the Input classAdding UI elements to the listChecking each UI elementPushing your buttonsAdding our pauseButton
State management
Creating a state managerPausing the game
Summary
5. Hit and Run
Out of bounds!Getting anchoredCollision rectanglesEmbeddingFixing the background
Collideables
Ready to scoreA friend indeedTime to spawn
Circular collision detection
The Pythagorean TheoremAdding the circular collision codeWhy use circular collision detection?Wiring in the collision detection
Rectangular collision detection
The enemy withinSpawning the enemyAdding the rectangular collision codeWiring continued
Summary
6. Polishing the Silver
The state of the gameState machinesWhy do we need a state machine?Planning for stateDefining the new stateImplementing the state machine
Making a splash
Creating the splash screenDefining the splash screenLoading our resources
What's on the menu?
Creating the menuDefining the menu buttons
Getting some credit
Creating the credits screenGetting back to the main menu
Working with fonts
Creating the fontDrawing textWiring in the font support
Level up!
Displaying the scoreGame progressionDefining game levelsGame statsThe next level screenContinuing the game
Game over
The game over screenReplaying the game
Summary
7. Audio Adrenaline
Bits and bytesA sound by any other nameMaking noise
Revving up your engine
Accessing the FMOD .dll fileLinking to the libraryPoint to the include files
Initializing FMOD
Virtual channelsChannel priority
Bleeps and bloops
Sound effectsSetting up the soundsPlaying soundsUI feedback
The sound of music
Cleaning up the house
Release spritesRelease inputReleasing fontsReleasing audio
Summary
8. Expanding Your Horizons
Into the third dimension!Simulating 3DReal 3D3D Coordinate Systems
The camera
Remember those home movies?Steady as she goes!The viewport
Entering the matrix
VectorsCombining vectorsIdentity matrix
Coding in 3D
Creating the projectRetrieving OpenGL filesLinking projects to OpenGL libraries
Setting up the OpenGL window
Including header filesDefining global variablesCreating a function to create the OpenGL windowSizing the OpenGL windowInitializing the OpenGL windowCreating a function to remove the OpenGL windowCreating the OpenGL windowCreating the Windows event handlerThe Game loopThe finale
Summary
9. Super Models
New Space
A computer in a computer
Drawing your weapons
Getting primitiveDrawing primitivesMaking your pointGl_PointsGetting in lineGl_LinesGl_Line_StripGl_Line_LoopTriangulationGl_TrianglesGl_Triangle_StripGl_Triangle_FanBeing squareGl_QuadsGl_Quad_StripSaving faceBack to Egypt
A modeling career
Blending inBlender overviewBuilding your spaceshipExporting the objectGetting loaded
Summary
10. Expanding Space
Creation 101Preparing the projectLoading game objectsThe Model class headerImplementing the Model classModifying the game code
Taking control
Implementing input
Asteroid slalom
Setting up collision detectionTurning on collision
Summary
11. Heads Up
Mixing things upThe saving statePush and popTwo state rendering
A matter of state
Adding the state machineGetting ready for a splash
Creating the user interface
Defining the text systemDefining texturesWiring in render, update, and the game loop
Summary
12. Conquer the Universe
A fun frameworkSetting up the Visual Studio projectSetting up the Windows environmentSetting up the OpenGL environmentSetting up the game loop
Texture mapping
Loading the textureRendering the cubeMapping operations
Let there be light!
Defining a light source
The skybox
Advanced topics
Game physicsAI
The future
Summary
Index

Content preview from OpenGL Game Development By Example

Setting up the OpenGL window

We are now going to add the code required to create an OpenGL window. We did this once for RoboRacer2D, but now, we are creating a 3D game and there will be some differences. Here's a look at what we need to do:

Include header files.
Define global variables.
Create the OpenGL window.
Initialize the OpenGL window.
Size the OpenGL window.
Remove the OpenGL window.
Create the Windows event handler.
Create the WinMain function.

Notice that we still have to create some code to satisfy Windows. We need an event handler to process Windows events, and we still need a main function to serve as the program entry point and run the main program loop. Everything else in this list is used to set up the OpenGL environment.

Tip

I listed the ...

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: 9781783288199

Cloud Computing

Data Engineering

Data Science

AI & ML

Programming Languages

Software Architecture

IT/Ops

Security

Design

Business

Soft Skills

OpenGL Game Development By Example

by Stephen Madsen, Robert Madsen

Setting up the OpenGL window

Tip

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.