Holistic Mobile Game Development with Unity 2015 Taylor & Francis. All rights Reserved.

Introduction  Multiplayer experiences are becoming more popular on mobile devices.  The game is rarely played in real-time.  Simple to set up networked communications.  As time between messages becomes faster and more people join in the same game, the logistics of handling and synchronizing the data become more complex.  Examine different types of multiplayer game experiences created on mobile devices.  Explain the underlying infrastructure and protocols of the Internet that make it all 2015 Taylor & Francis. All rights Reserved. 2

Playing Together on the Same Device  Asynchronous Games Turn-based games ○ Trivial Pursuit and Pathogen  Synchronous Split-screen ○ Fruit Ninja, Snowball Mania and Worms 2: 2015 Taylor & Francis. All rights Reserved. 3

Networking  TCP/IP Transmission Control Program/Internet Protocol Internal messaging standard for data ○ datagram and payload ○ header and IP address ○ NAT ID and 2015 Taylor & Francis. All rights Reserved. 4

Networking  Clients and Servers Game 2015 Taylor & Francis. All rights Reserved. 5

Networking  Clients and Servers Game server ○ 2015 Taylor & Francis. All rights Reserved. 6

Networking  Clients and Servers Game server ○ Authoritative and non- authoritative ○ Persistent 2015 Taylor & Francis. All rights Reserved. 7

Synchronizing Worlds  Latency or lag Dead 2015 Taylor & Francis. All rights Reserved. 8

Synchronizing Worlds  Latency or lag Dead reckoning Entity 2015 Taylor & Francis. All rights Reserved. 9

Remote Procedure Calls  Extend functionality Networked View 2015 Taylor & Francis. All rights Reserved. 10

Interacting with the Web  Mediator and message sender  Dynamic content Text and images Asset 2015 Taylor & Francis. All rights Reserved. 11

Summary Multiplayer Experiences  Examined numerous methods for establishing multiplayer gaming environments on mobile devices.  Multiple players on one device are easy to implement, but small the screens can make gameplay difficult.  Moving to a multiplayer configuration with multiple devices introduces many new issues requiring a solid understanding of message sending via the Internet.  Pulling updated data from the Web is an efficient means of managing the multiplayer 2015 Taylor & Francis. All rights Reserved. 12