Book Image

Unity 5 Game Optimization

By : Chris Dickinson
Book Image

Unity 5 Game Optimization

By: Chris Dickinson

Overview of this book

Competition within the gaming industry has become significantly fiercer in recent years with the adoption of game development frameworks such as Unity3D. Through its massive feature-set and ease-of-use, Unity helps put some of the best processing and rendering technology in the hands of hobbyists and professionals alike. This has led to an enormous explosion of talent, which has made it critical to ensure our games stand out from the crowd through a high level of quality. A good user experience is essential to create a solid product that our users will enjoy for many years to come. Nothing turns gamers away from a game faster than a poor user-experience. Input latency, slow rendering, broken physics, stutters, freezes, and crashes are among a gamer's worst nightmares and it's up to us as game developers to ensure this never happens. High performance does not need to be limited to games with the biggest teams and budgets. Initially, you will explore the major features of the Unity3D Engine from top to bottom, investigating a multitude of ways we can improve application performance starting with the detection and analysis of bottlenecks. You'll then gain an understanding of possible solutions and how to implement them. You will then learn everything you need to know about where performance bottlenecks can be found, why they happen, and how to work around them. This book gathers a massive wealth of knowledge together in one place, saving many hours of research and can be used as a quick reference to solve specific issues that arise during product development.
Table of Contents (16 chapters)
Unity 5 Game Optimization
Credits
About the Author
Acknowledgments
About the Reviewers
www.PacktPub.com
Preface
Index

Physics performance optimizations


Now that we have an understanding of the most significant features of the Unity Physics Engine, we can cover some optimization techniques to improve our game's physics performance.

Scene setup

Firstly, there are a number of best practices we can apply to our Scenes to improve consistency of the physics simulation. Note that these techniques will not necessarily improve CPU or memory usage, but they will result in a reduced likelihood of instability from the Physics Engine.

Scaling

We should try to keep all physics object scales in the world as close to 1:1:1 as we possibly can. This means that for the default gravity value of -9.81, the unit scale of the world is implied to be 1 meter per unit, since the force of gravity at the surface of the Earth is 9.81 m/s² (most games are trying to simulate this situation). Our object sizes should reflect our implied world scale, since scaling them too large will cause gravity to appear to move the objects much more slowly...