Book Image

Rust Programming By Example

By : Guillaume Gomez, Antoni Boucher
Book Image

Rust Programming By Example

By: Guillaume Gomez, Antoni Boucher

Overview of this book

Rust is an open source, safe, concurrent, practical language created by Mozilla. It runs blazingly fast, prevents segfaults, and guarantees safety. This book gets you started with essential software development by guiding you through the different aspects of Rust programming. With this approach, you can bridge the gap between learning and implementing immediately. Beginning with an introduction to Rust, you’ll learn the basic aspects such as its syntax, data types, functions, generics, control flows, and more. After this, you’ll jump straight into building your first project, a Tetris game. Next you’ll build a graphical music player and work with fast, reliable networking software using Tokio, the scalable and productive asynchronous IO Rust library. Over the course of this book, you’ll explore various features of Rust Programming including its SDL features, event loop, File I/O, and the famous GTK+ widget toolkit. Through these projects, you’ll see how well Rust performs in terms of concurrency—including parallelism, reliability, improved performance, generics, macros, and thread safety. We’ll also cover some asynchronous and reactive programming aspects of Rust. By the end of the book, you’ll be comfortable building various real-world applications in Rust.
Table of Contents (18 chapters)
Title Page
Copyright and Credits
Packt Upsell
Events and Basic Game Mechanisms

Writing Tetris

First, let's review the Tetris rules (just in case):

  • There is a grid with a height of 16 blocks and a width of 10 blocks.
  • You have seven different tetrimino (a tetris piece) that are all composed of four blocks.
  • A new tetrimino appears at the top of the game's grid every time the previous one cannot descend any more (because the block below is already occupied or because you've reached the game's floor).
  • The game is over when a new tetrimino cannot appear anymore (because there is already a tetrimino at the top of the grid).
  • Every time a line is full (all blocks are occupied by a tetrimino part), it disappears and all lines above descend by one line.

Now that we all agree on the game rules, let's see how to actually write those mechanisms.

First, we need to actually create those tetriminos.


As said previously, every tetrimino has four blocks. Another thing to note is that they can rotate. So for example you have this tetrimino:

Figure 3.1

It can also rotate in the three following...