Serious Games

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Serious Games Game DesignLecture 3 MMOs
Notation

• Jay Crossler
• Senior Software Engineer

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Unforeseen artifacts in complex systems

• Its not a bug, its a feature!

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World of Warcraft

• World of Warcraft
• 4 Million world-wide players
• It takes approximately 240 hours of play time to
  make highest level
• People buy WoW gold on eBay - 20 can help you
  save 40 hours of work
• Chinese gold farmers
• Villagers in China are working out of internet
  cafes doing the boring, repetitive work and
  selling the profits for 5/day
• One farm-leader made 120k in the last year

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World of Warcraft

• Extensible User Interface
• XML/Javascript based mods
• Allows links to external DBs
• Thottbott, Auctioneer, etc.
• Plague runs Amok
• One instance has a monster that gives you a
  blood plague
• Kills in a minute
• A line of players ran it back to a city,
  thousands infected
• Game masters had to quarantine entire cities

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Case Study Second Life

• Some people actually make their income on SL

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Second Life

• Not quite a game, more a programmable VR platform

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Second Life Scriptinghttp//secondlife.com/badgeo
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Object Scripting in SL
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XML-RPC in game objects

• You can attach an XML-RPC listener to an object
• It will wait for requests from the outside world,
  and respond

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XML-RPC in game, cont.

• Why not have objects initiate XML-RPC calls?
• This would be a denial-of-service mechanism that
  would ultimately cause the SL site to be blocked

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The XML-RPC Call
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The XML-RPC response
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Calling XML-RPC from ASP

• Active Server Pages is an easy-to-use server-side
  scripting language that works natively on IIS

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Calling XML-RPC from Java
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Calling XML-RPC from PHP
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Beware!

• If youre online, youre not safe.
• http//www.youtube.com/watch?v5H8hNXWgOoE

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