Book Image

Learning C# by Developing Games with Unity 2020 - Fifth Edition

By : Harrison Ferrone
Book Image

Learning C# by Developing Games with Unity 2020 - Fifth Edition

By: Harrison Ferrone

Overview of this book

Over the years, the Learning C# by Developing Games with Unity series has established itself as a popular choice for getting up to speed with C#, a powerful and versatile programming language that can be applied in a wide array of application areas. This book presents a clear path for learning C# programming from the ground up without complex jargon or unclear programming logic, all while building a simple game with Unity. This fifth edition has been updated to introduce modern C# features with the latest version of the Unity game engine, and a new chapter has been added on intermediate collection types. Starting with the basics of software programming and the C# language, you’ll learn the core concepts of programming in C#, including variables, classes, and object-oriented programming. Once you’ve got to grips with C# programming, you’ll enter the world of Unity game development and discover how you can create C# scripts for simple game mechanics. Throughout the book, you’ll gain hands-on experience with programming best practices to help you take your Unity and C# skills to the next level. By the end of this book, you’ll be able to leverage the C# language to build your own real-world Unity game development projects.
Table of Contents (16 chapters)

Arithmetic and assignments

You're already familiar with the arithmetic operator symbols from school:

  • + for addition
  • - for subtraction
  • / for division
  • * for multiplication

C# operators follow the conventional order of operations, that is, evaluating parentheses first, then exponents, then multiplication, then division, then addition, and finally subtraction (BEDMAS). For instance, the following equations will provide different results, even though they contain the same values and operators:

5 + 4 - 3 / 2 * 1 = 8
5 + (4 - 3) / 2 * 1 = 5
Operators work the same when applied to variables, as they do with literal values. 

Assignment operators can be used as a shorthand replacement for any math operation by using any arithmetic and equals symbol together. For example, if we wanted to multiply a variable, both of the following options would produce the same result:

int currentAge = 32;
currentAge = currentAge * 2;

The second, alternative, way to do this is shown here...