[JAVA][Beginning Java 8 Games Development]

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Chapter 13 ■ Animating Your Action Figure States: Setting the Image States Based on KeyEvent Processing Figure 13-9. Add a third level of if-else nesting that prevents cels from alternating too quickly by using a framecounter Now make the same modifications to the if(invinciBagel.isLeft()) conditional if() structure. The only difference will be the ScaleX property being -1 (mirrored sprite image) as shown in the following code in Figure 13-10: if(invinciBagel.isLeft()) { spriteFrame.setScaleX(-1); if(!animator) { spriteFrame.setImage(imageStates.get(1)); if(framecounter >= runningspeed) { animator=true; framecounter=0; } else { framecounter+=1; } } else if(animator) { spriteFrame.setImage(imageStates.get(2)); if(framecounter >= runningspeed) { animator=false; framecounter=0; } else { framecounter+=1; } } } 284 www.it-ebooks.info
Chapter 13 ■ Animating Your Action Figure States: Setting the Image States Based on KeyEvent Processing Figure 13-10. Duplicate the if-else structure from the isRight() structure into the isLeft() structure using framecounter Now the time has come again to use the Run ➤ Project work process and test the run-cycle code, which now exhibits a smooth, even, realistic run cycle. You can fine tune the running speed to slightly slower with a 7 or 8 value or slightly faster with a 4 or 5 value. As we add faster vX values for running (say vX = 2) we can set the runningspeed to 3 or 4 to match this and make the game far more realistic. One additional thing that I noticed as I was testing the code during this chapter that I want to correct here is the sprite cel image for landing. I have been using imageStates(3), which is the “landed” image, which should actually be better utilized with a collision situation. Let’s save this sprite cel image state for use later, in the collision detection code development phase, to signify a collision with a surface (just landed or on impact image). The image I want to use while the down arrow key is pressed is actually imageStates(6), which is the “preparing to land” image. The revised <strong>Java</strong> code will look like the following, and is shown highlighted in Figure 13-11: if(invinciBagel.isDown()) { spriteFrame.setImage(imageStates.get(6)); } www.it-ebooks.info 285
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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 4 ■ An Introduction to Ja
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Chapter 5 An Introduction to Game D
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Chapter 5 ■ An Introduction to Ga
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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 7 The Foundation of Game Pl
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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 15 ■ Implementing Game Au
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Chapter 16 ■ Collision Detection:
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Chapter 17 Enhancing Game Play: Cre
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Chapter 17 ■ Enhancing Game Play:
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■ index Background image (cont.)
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■ index InvinciBagel animation (c
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■ index Modifier keywords access
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Beginning Java 8 Games Development
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This Java 8 Game Development book i
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■ Contents NetBeans 8.0 Is User I
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■ Contents ■■Chapter 5: An In
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■ Contents Creating a Hero Superc
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■ Contents Organizing the .update
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■ Contents Optimizing the Scene G
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About the Author Wallace Jackson ha
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Acknowledgments I would like to ack
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