Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Beginning C++ Game Programming

You're reading from   Beginning C++ Game Programming Learn C++ from scratch by building fun games

Arrow left icon
Product type Paperback
Published in May 2024
Publisher Packt
ISBN-13 9781835081747
Length 648 pages
Edition 3rd Edition
Languages
Tools
Concepts
Arrow right icon
Author (1):
Arrow left icon
John Horton John Horton
Author Profile Icon John Horton
John Horton
Arrow right icon
View More author details
Toc

Table of Contents (24) Chapters Close

Preface 1. Welcome to Beginning C++ Game Programming Third Edition! FREE CHAPTER 2. Variables, Operators, and Decisions: Animating Sprites 3. C++ Strings, SFML Time: Player Input and HUD 4. Loops, Arrays, Switch, Enumerations, and Functions: Implementing Game Mechanics 5. Collisions, Sound, and End Conditions: Making the Game Playable 6. Object-Oriented Programming – Starting the Pong Game 7. AABB Collision Detection and Physics – Finishing the Pong Game 8. SFML Views – Starting the Zombie Shooter Game 9. C++ References, Sprite Sheets, and Vertex Arrays 10. Pointers, the Standard Template Library, and Texture Management 11. Coding the TextureHolder Class and Building a Horde of Zombies 12. Collision Detection, Pickups, and Bullets 13. Layering Views and Implementing the HUD 14. Sound Effects, File I/O, and Finishing the Game 15. Run! 16. Sound, Game Logic, Inter-Object Communication, and the Player 17. Graphics, Cameras, Action 18. Coding the Platforms, Player Animations, and Controls 19. Building the Menu and Making It Rain 20. Fireballs and Spatialization 21. Parallax Backgrounds and Shaders 22. Other Books You May Enjoy
23. Index

Detecting collisions

We just need to know when certain objects from our game touch certain other objects. We can then respond to that event in an appropriate manner. In our classes, we have already added functions that will be called when our objects collide. They are as follows:

  • The Player class has a hit function. We will call it when a zombie collides with the player.
  • The Zombie class has a hit function. We will call it when a bullet collides with a zombie.
  • The Pickup class has a gotIt function. We will call it when the player collides with a pickup.

If necessary, look back to refresh your memory regarding how each of those functions works. All we need to do now is detect the collisions and call the appropriate functions.

We will use rectangle intersection to detect collisions. This type of collision detection is straightforward (especially with SFML). We will use the same technique that we used in the Pong game. The following image shows how...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at $19.99/month. Cancel anytime
Banner background image