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SFML Game Development By Example

You're reading from   SFML Game Development By Example Create and develop exciting games from start to finish using SFML

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Product type Paperback
Published in Dec 2015
Publisher
ISBN-13 9781785287343
Length 522 pages
Edition 1st Edition
Languages
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Author (1):
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Raimondas Pupius Raimondas Pupius
Author Profile Icon Raimondas Pupius
Raimondas Pupius
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Toc

Table of Contents (16) Chapters Close

Preface 1. It's Alive! It's Alive! – Setup and First Program 2. Give It Some Structure – Building the Game Framework FREE CHAPTER 3. Get Your Hands Dirty – What You Need to Know 4. Grab That Joystick – Input and Event Management 5. Can I Pause This? – Application States 6. Set It in Motion! – Animating and Moving around Your World 7. Rediscovering Fire – Common Game Design Elements 8. The More You Know – Common Game Programming Patterns 9. A Breath of Fresh Air – Entity Component System Continued 10. Can I Click This? – GUI Fundamentals 11. Don't Touch the Red Button! – Implementing the GUI 12. Can You Hear Me Now? – Sound and Music 13. We Have Contact! – Networking Basics 14. Come Play with Us! – Multiplayer Subtleties Index

Implementing the snake structure


Let's now create the two files we'll be working with: Snake.h and Snake.cpp. Prior to actually developing the snake class, a definition of some data types and structures is in order. We can begin by actually defining the structure that our apple eating serpent will be made out of, right in the snake header file:

struct SnakeSegment{
    SnakeSegment(int x, int y) : position(x,y){}
    sf::Vector2i position;
};

As you can tell, it's a very simple structure that contains a single member, which is an integer vector representing the position of the segment on the grid. The constructor here is utilized to set the position of the segment through an initializer list.

Tip

Before moving past this point, make sure you're competent with the Standard Template Library and the data containers it provides. We will specifically be using std::vector for our needs.

We now have the segment type defined, so let's get started on actually storing the snake somewhere. For beginner purposes...

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