CHAPTER 3
High-Performance JavaScript
For a game to be enjoyable, smoothness is critical. A smooth game can feel lifelike and amazing; without smoothness, a game will be sluggish and annoying, even with the best art.
Smoothness is also important for user retention. Facebook recently revealed the results of an A/B test in which scrolling was slowed from 60FPS to 30FPS (http://youtu.be/3-WYu_p5rdU?t=36m): engagement collapsed.
In this chapter, I will discuss the essential techniques for making a simple, two-dimensional HTML5 game feel and perform like a native one.
The first two techniques are the low-hanging ...
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