[JAVA][Beginning Java 8 Games Development]

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Chapter 17 ■ Enhancing Game Play: Creating a Scoring Engine, Adding Treasure and an Enemy Auto-Attack Engine Figure 17-60. Adding physics simulation of gravity to the Projectile object's trajectory in the .shootProjectile() method Summary In this seventeenth and final chapter, we used all of the foundational elements of our game engine(s) that we have been building during the course of this book, and created the basic game play for the InvinciBagel game, including a scoring engine and an auto-attack engine, as well as random attack strategies and basic physics simulation to enhance realism. We learned how to use the JavaFX 8.0 Text and Font class to create scoreboard output on the game, and how to use the Java 8 Random class as a random number generator to make our auto-attack engine seem like it had a life of its own. We also added bounty to the game by coding a Treasure.java class and created a .scoringEngine() method to track and organize our scoring algorithm. We learned more about optimization, using if-else-if loops with break; and learned how to use return; to break out of a method prematurely as well, and we used both of these techniques to great benefit in our game play logic. We added Enemy characters and Projectile objects to the game, and learned how to implement a background plate behind the game play. I’ve tried to go beyond a basic beginner Java 8 book and show you the work process involved in creating a game engine infrastructure, including the design thought process, how to leverage key classes in Java 8 and JavaFX 8.0, and how to use new media assets and optimization techniques. www.it-ebooks.info 453
Index • A ActionEvent object, 193 Actor superclass, 165, 168, 299 Actor() constructor method, 169, 173 boolean data variables, 172 double data variables, 171 getter and setter methods, 174 overloaded method, 169 Prop subclasses (see Prop subclasses) setContent() method, 169 update() method, 170 addGameActorNodes() method, 237–238, 248 addNodesToStackPane() method, 128, 143, 238, 241 addStackPaneNodes() method, 138 Antialiasing, 110 ArrayList, 208 class, 209 object, 209 addAll() method, 215 addCurrentCast() method, 214 COLLIDE_CHECKLIST, 218 getCurrentCast() method, 214 removeCurrentCast() method, 215 resetCurrentCast() method, 216 ASDW keys function coding, 289–290 Getter and Setter methods, NetBeans Insert Code, 291, 293 jump and evade animation, 293–294 WSAD keys, 290 Audacity, 13 AudioClip, 323 Audacity Export File dialog, 325 non-destructive audio editing, 327 waveform representation, 325 class, 324 InvinciBagel.java class loadAudioAssets() method, 335 playAudioClip() method, 340 playiSound() methods, 338 URL class, 333 loadAudioAssets() method, 323 memory footprint, 327 export assets, 332 PCM, 327 resolution, 328 sampling frequency, 329 stereo vs. mono audio, 331 object, 324 playAudioClip() method, 323 setiSound() methods, 323 Auto-attack engine, 393, 417 addGameActorNodes() method, 446 boolean variables, 424 constructor methods, 446 GamePlayLoop .handle() method, 423 getter method, 449 handle() method, 418 iBagelLocation variable, 450 if-else structure, 425 initiateAttack() method, 419, 447 nested if conditional structures, 426 nextBoolean() method, 421, 447 nextInt() method, 421 randomNum.nextInt() method, 448 shootProjectile() method, 426 update() method, 418 • B Background image loadImageAssets(), 413 setImage() method, 413 setVisible() method, 413 455
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Contents at a Glance About the Auth
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Introduction The Java Programming L
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■ Introduction In Chapter 13 you
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Chapter 1 ■ Setting Up a Java 8 G
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Chapter 2 Setting Up Your Java 8 ID
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Chapter 2 ■ Setting Up Your Java
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Profiling Your Java 8 Game Applicat
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Chapter 3 ■ A Java 8 Primer: An I
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Chapter 5 An Introduction to Game D
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Chapter 6 The Foundation of Game De
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Chapter 6 ■ The Foundation of Gam
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Chapter 8 Creating Your Actor Engin
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Chapter 8 ■ Creating Your Actor E
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Chapter 9 Controlling Your Action F
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Chapter 9 ■ Controlling Your Acti
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Chapter 10 Directing the Cast of Ac
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Chapter 10 ■ Directing the Cast o
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Chapter 11 ■ Moving Your Action F
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Chapter 12 Setting Boundaries for Y
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Chapter 13 ■ Animating Your Actio
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Chapter 14 ■ Setting Up the Game
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Chapter 15 Implementing Game Audio
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Chapter 15 ■ Implementing Game Au
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Chapter 17 Enhancing Game Play: Cre
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Page 454 and 455: ■ index Background image (cont.)
Page 456 and 457: ■ index InvinciBagel animation (c
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Page 460 and 461: Beginning Java 8 Games Development
Page 462 and 463: This Java 8 Game Development book i
Page 464 and 465: ■ Contents NetBeans 8.0 Is User I
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Page 474 and 475: About the Author Wallace Jackson ha
Page 476: Acknowledgments I would like to ack
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