At this point, you should be a little familiar with Cocos2D. We've set everything up and even created a basic project. Before we can move to some actual game making, we have to review a few basic concepts and review how Cocos2D works under the hood. This is required so that we can concentrate on writing code in the future without huge side notes about each line of the code. After this chapter, you will have a general top-level understanding of Cocos2D concepts, main classes, and techniques and will be able to concentrate on actually using Cocos2D to solve real-world tasks.

In this chapter, we will cover the following topics: