Book Image

Learning Java by Building Android Games - Third Edition

By : John Horton
5 (1)
Book Image

Learning Java by Building Android Games - Third Edition

5 (1)
By: John Horton

Overview of this book

Android is one of the most popular mobile operating systems today. It uses the most popular programming language, Java, as one of the primary languages for building apps of all types. Unlike most other Android books, this book doesn’t assume that you have any prior knowledge of Java programming, instead helps you get started with building Android games as a beginner. This new, improved, and updated third edition of Learning Java by Building Android Games helps you to build Android games from scratch. Once you've got to grips with the fundamentals, the difficulty level increases steadily as you explore key Java topics, such as variables, loops, methods, object-oriented programming (OOP), and design patterns while working with up-to-date code and supporting examples. At each stage, you'll be able to test your understanding by implementing the concepts that you’ve learned to develop a game. Toward the end, you’ll build games such as Sub Hunter, Retro Pong, Bullet Hell, Classic Snake, and Scrolling Shooter. By the end of this Java book, you'll not only have a solid understanding of Java and Android basics but will also have developed five cool games for the Android platform.
Table of Contents (24 chapters)

Introducing the Scrolling Shooter project

The player's objective in this game is simply to destroy as many aliens as possible. Let's look into some more details about the features the game will have. Look at the starting screen for the Scrolling Shooter project in the next figure:

Figure 18.1 – Scrolling Shooter game screen

You can see there is a background of silhouetted skyscrapers. This background will smoothly and speedily scroll in the direction the player is flying. The player can fly left or right, and the background will scroll accordingly. However, the player cannot stay still horizontally. You can see that when the game is over (or has just been launched by the player), the message PRESS PLAY is displayed.

I have numbered some items of interest in the previous figure; let's run through them:

  1. There is a high score feature and for the first time, we will make the high score persistent. When the player quits the game...