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Learning Java by Building Android  Games

You're reading from   Learning Java by Building Android Games Learn Java and Android from scratch by building six exciting games

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Product type Paperback
Published in Aug 2018
Publisher
ISBN-13 9781788839150
Length 774 pages
Edition 2nd Edition
Languages
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Author (1):
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John Horton John Horton
Author Profile Icon John Horton
John Horton
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Toc

Table of Contents (28) Chapters Close

Preface 1. Java, Android and Game Development FREE CHAPTER 2. Java: First Contact 3. Variables, Operators and Expressions 4. Structuring Code with Java Methods 5. The Android Canvas Class – Drawing to the Screen 6. Repeating Blocks of Code with Loops 7. Making Decisions with Java If, Else and Switch 8. Object-Oriented Programming 9. The Game Engine, Threads, and The Game Loop 10. Coding the Bat and Ball 11. Collisions, Sound Effects and Supporting Different Versions of Android 12. Handling Lots of Data with Arrays 13. Bitmap Graphics and Measuring Time 14. The Stack, the Heap, and the Garbage Collector 15. Android Localization -Hola! 16. Collections, Generics and Enumerations 17. Manipulating Bitmaps and Coding the Snake class 18. Introduction to Design Patterns and much more! 19. Listening with the Observer Pattern, Multitouch and Building a Particle System 20. More Patterns, a Scrolling Background and Building the Player's ship 21. Completing the Scrolling Shooter Game 22. Exploring More Patterns and Planning the Platformer Project 23. The Singleton Pattern, Java HashMap, Storing Bitmaps Efficiently and Designing Levels 24. Sprite-sheet animations, Controllable Player and Parallax Scrolling Backgrounds 25. Intelligent Platforms and Advanced Collision Detection 26. What next? Index

Structuring Sub' Hunter with methods

As we add the method definitions to the code it shouldn't come as much surprise where each of the methods will go. The draw method will go after the comment about … do all the drawing… and so on.

Add the newGame method definition after the appropriate comment as shown next.

/*
   This code will execute when a new
   game needs to be started. It will
   happen when the app is first started
   and after the player wins a game.
 */
void newGame(){

}

Add the draw method definition after the appropriate comment as highlighted.

/*
   Here we will do all the drawing.
   The grid lines, the HUD,
   the touch indicator and the
   "BOOM" when a sub' is hit
*/
void draw() {

}

Add the onTouchEvent definition after this comment.

/*
   This part of the code will
   handle detecting that the player
   has tapped the screen
 */
@Override
public boolean onTouchEvent(MotionEvent motionEvent) {

}

You have probably noticed that the...

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