April 2017
Beginner to intermediate
394 pages
9h 16m
English
Content preview from Game Development Patterns and Best Practices
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The Observer pattern explained
The intent of the Observer pattern is to define a one-to-many relationship between objects. When the state of one object changes, all its dependents are notified. The typical names for the objects in this pattern are the Subject (the one), and the Observers (the many). The Subject will contain data that the Observers need to know about. Instead of the usual situation of classes requesting data from another (polling), our Subject will notify a list of Observers when the data has changed.
The terms Subject and Observers may seem a little confusing at first. However, this concept is very easy, and one that most of us are familiar with. When trying to understand the Observer pattern, think of a blog and subscribers. ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.