Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Save more on your purchases! discount-offer-chevron-icon
Savings automatically calculated. No voucher code required.
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Newsletter Hub
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
iOS Game Programming Cookbook

You're reading from   iOS Game Programming Cookbook Over 45 interesting game recipes that will help you create your next enthralling game

Arrow left icon
Product type Paperback
Published in Mar 2015
Publisher
ISBN-13 9781784398255
Length 300 pages
Edition 1st Edition
Languages
Tools
Arrow right icon
Toc

Table of Contents (14) Chapters Close

Preface 1. iOS Game Development FREE CHAPTER 2. SpriteKit 3. Animations and Texture 4. Particle System and Game Performance 5. Adding Music to iOS Games and an Introduction to iCloud 6. Physics Simulation 7. Adding Reality to Games 8. Introduction to Game Math and Physics 9. Autonomous Moving Agents 10. 3D Game Programming with OpenGL 11. Getting Started with Multiplayer Games 12. Implementing Multiplayer Games Index

Implementing the seek


To implement the seek behavior for our player, we will need a derive force that will redirect the agent toward a target position. In the seek behavior, our character will overshoot the target because the force applied on the player will be more, which will make the player overshoot the target and then return to the target. It will take a finite amount of time before coming to rest.

Getting ready

Seek behavior is something similar to the following screenshot:

The preceding image explains the algorithm that will be used to implement the seek behavior. In our case, we will need to seek to the target and have to follow the following algorithm:

Vector desiredVelocity = targetVector – player.locationVector;

desiredVelocity.normalize;

desiredVelocity *= player.maxSpeed;

return (desiredVelocity – agent.locationVector);

How to do it

Now we will start again on the project to implement the seek behaviors. Now, follow the steps below to implement the seek behavior:

  1. Open the Player...

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