Book Image

Game Development with Rust and WebAssembly

By : Eric Smith
Book Image

Game Development with Rust and WebAssembly

By: Eric Smith

Overview of this book

The Rust programming language has held the most-loved technology ranking on Stack Overflow for 6 years running, while JavaScript has been the most-used programming language for 9 years straight as it runs on every web browser. Now, thanks to WebAssembly (or Wasm), you can use the language you love on the platform that's everywhere. This book is an easy-to-follow reference to help you develop your own games, teaching you all about game development and how to create an endless runner from scratch. You'll begin by drawing simple graphics in the browser window, and then learn how to move the main character across the screen. You'll also create a game loop, a renderer, and more, all written entirely in Rust. After getting simple shapes onto the screen, you'll scale the challenge by adding sprites, sounds, and user input. As you advance, you'll discover how to implement a procedurally generated world. Finally, you'll learn how to keep your Rust code clean and organized so you can continue to implement new features and deploy your app on the web. By the end of this Rust programming book, you'll build a 2D game in Rust, deploy it to the web, and be confident enough to start building your own games.
Table of Contents (16 chapters)
Part 1: Getting Started with Rust, WebAssembly, and Game Development
Part 2: Writing Your Endless Runner
Part 3: Testing and Advanced Tricks

Chapter 8: Adding a UI

It may appear that we've developed everything we need for a video game, and to some extent, we have, except for that annoyance where we need to hit refresh every time little Red Hat Boy (RHB) hits a rock. A real game has buttons for a "new game" or "high scores", and in this chapter, we'll be adding that UI. To do so may seem trivial, but event-driven UIs that you might be familiar with from web development are an odd fit with our game loop. To add a simple button, we'll need to make significant changes to our application and even write a little HTML.

In this chapter, you'll do the following:

  • Design a new game button
  • Show the button on game over
  • Start a new game

At the end of the chapter, you'll have the framework in place for a more full-featured UI and the skills to make it work.