Book Image

Hands-On Game Development with WebAssembly

By : Rick Battagline
Book Image

Hands-On Game Development with WebAssembly

By: Rick Battagline

Overview of this book

Within the next few years, WebAssembly will change the web as we know it. It promises a world where you can write an application for the web in any language, and compile it for native platforms as well as the web. This book is designed to introduce web developers and game developers to the world of WebAssembly by walking through the development of a retro arcade game. You will learn how to build a WebAssembly application using C++, Emscripten, JavaScript, WebGL, SDL, and HTML5. This book covers a lot of ground in both game development and web application development. When creating a game or application that targets WebAssembly, developers need to learn a plethora of skills and tools. This book is a sample platter of those tools and skills. It covers topics including Emscripten, C/C++, WebGL, OpenGL, JavaScript, HTML5, and CSS. The reader will also learn basic techniques for game development, including 2D sprite animation, particle systems, 2D camera design, sound effects, 2D game physics, user interface design, shaders, debugging, and optimization. By the end of the book, you will be able to create simple web games and web applications targeting WebAssembly.
Table of Contents (18 chapters)

More collision detection

Let's take a look at the modifications we need to make to our Collider class. As we discussed earlier, our AI will be implementing steering behaviors. These steering behaviors will require some new attributes and functions in our Collider class. Here is what the new Collider class is going to look like:

class Collider {
public:
float* m_ParentRotation;
float* m_ParentX;
float* m_ParentY;
Vector2D m_TempPoint;

bool CCHitTest( Collider* collider );

Vector2D m_Position;
float m_Radius;
float m_SteeringRadius;
float m_SteeringRadiusSQ;

void SetParentInformation( float* rotation, float* x, float* y );
Collider(float radius);
bool HitTest( Collider *collider );
bool SteeringLineTest( Vector2D &p1, Vector2D &p2 );
bool SteeringRectTest( Vector2D...