advanced scrum and agile - clintonkeith.comclintonkeith.com/resources/gdc2009-advancedscrum.pdf ·...
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Advanced Scrum and agile
developmentClinton Keith
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Clinton Keith
24 years of development experience
15 years of game development experience5 years of agile development experience in the game industryIntroduced agile to the
industry in March 2005
Agile coachand trainer
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Agenda
•3 minute tour•Challenges & Solutions•Summary•Q&A
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A 3 minute tour of Scrum
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© 2009 Clinton Keith
Scrum
Swim
Crouch
Jump
Sprint2-4 weeks
Jump
Sprint goal
Sprint backlog Incrementallyimproved game
Productbacklog
FlySwim
Fly
Crouch
24 hours
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© 2009 Clinton Keith
Putting it all together
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© 2009 Clinton Keith
The Scrum project community
Programmer Designer
Designer
Programmer
Tester
Artist
Animator
Artist
Internaldirector
Publisherproducer
The team
ScrumMaster
Product Owner
Anyone(not an
authority role)
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The Roadmap
Stage 1• Apprentice• 3-12 months• Daily Scrums• Iterations• “Done”
Stage 2• Journeyman• 12-24 months• Faster integrations• Better testing• Release planning
Stage 3• Master• Never ends• Self organization• Continuous improvement
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Project Leadership
Time
Directed Management
Facilitative / Coaching
Time
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•3 minute tour•Challenges & Solutions•Summary•Q&A
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Switching from a push system to a pull system
• What is a “pull system”?• “Pushing” tasks through Scrum• The challenge of pull systems.• Defining done
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Scrum is a pull system
Sprintgoal
Not started In progress Done
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Why a pull system?
• “Done” is the goal, not task completion
• Creates a “real” pace• Minimizes debt
• Allows true velocity to be measured• Velocity is a better measure than
progress against a schedule• Focuses on what is “on the screen”, not
progress against a schedule• Reality vs “the plan”
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Burning down hours?
Tracking story points completed?
Work tracked in days not hours?
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“Pushing” tasks through Scrum
Sprintgoal
Not started In progress Done
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Pushing tasks in Scrum• Task completion is the goal• Goals often left incomplete
• Bugs• Missing, yet unstated, requirements
• Velocity is slower• Collisions at the end of the sprint• More multi-tasking
• Symptoms• Mini-crunch every sprint• Very few iterations on the sprint goal• Not much polish
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The challenge with pull systems
• Over reliance on tools• Daily scrums are not status reporting
meetings
• “Over managing” the team• Let the team manage the tasks (i.e. the
path to achieving the goal). • Help them make the right decisions
• Teams not taking ownership or making commitments• Common for teams new to Scrum
• Defining “done”
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© 2003–2008 Mike Cohn or Clinton Keith
Concept
Design
Coded
Playable
Polish
Performance
Magazine demo
Online
Shippable
!Extend the scope of done as far as possible
Defining Done
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Shared service teams
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© 2009 Clinton Keith
Game 1 backlog
Game 2 backlog
Game 3 backlogShared
Services backlog
Product owner = CTOProduct = studio
= external shared services work
Shared service teams
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The product owner
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The product owner
• Represents the customers• One voice, even if not one person
• Usually an• Internal Director• Publisher Producer
• Supplement with someone onsite
• Main responsibility is knowing what to build and in what sequence
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Communicating vision
Backlog
DeveloperPO
PublisherPO
TeamMarketing
Executives
Sales
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Parts on the garage floor
Leads to iterative and incremental death marches
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Documentation has its place
!
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Agile phases for game development
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Agile is phase-less
Iteration
Concept
Design
Development
Production
Iteration
Concept
Design
Development
Production
Iteration
Concept
Design
Development
Production
...is game development?
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Not Quite
0%
25%
50%
75%
100%
PreProd
uctio
n #1
PreProd
uctio
n #2
PreProd
uctio
n #3
Produc
tion #
1
Produc
tion #
2
Produc
tion #
3
Produc
tion #
4
Alpha/B
eta
ConceptDesignDevelopmentProduction
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Preproduction vs Production
Preproduction Production
Questions or
StatementsWhat and how? Build it!
State of mind Collaboration Flow
Goals Correctness Efficiency
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Which process?
What and how? Build it!
Collaboration Flow
Correctness Efficiency
Scrum Lean
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What is Lean?
• Agile development methodology that is not as well known as Scrum.
• Focused on complex flow of work and pull systems to represent that flow.
• Are better suited to more predictable work-flow.
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The problem using Scrum for productionScrum does not represent multi-step workflow transparently.
Model Rig AnimateAudiopass
End of sprint
Model Rig AnimateAudiopass
Team fails to achieve goal....all work-in-progress (WIP)
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Cross-discipline teams cannot share the work evenly
Model Rig AnimateAudiopass
End of sprint
Model?
The problem using Scrum for production
Discipline pools can help, but they promote local optimization, which works against flow
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If the work is repeatable...
Model Rig AnimateAudiopass
End of sprint
Model Rig AnimateAudiopass
Model RigAnimateAudiopass
ModelRig AnimateAudiopass
It should flow
Done
WIP
WIP
WIP
Done
Done
Done
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Time-boxing Art
A time-box is a fixed length of time given to produce results. The results are variable.
“When forced to work within a strict framework the imagination is taxed to its utmost-and will produce richest ideas. Given total freedom the work is likely to sprawl.” -TS Eliot
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Finding the right timebox
Timeboxshould keep
us here
Value
to
Customer
Cost
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Kanban Board
Concept andOutline
Low Rez &Layout High Rez Audio Tuning pass
Billy Robert R.J Carlos Mike
Charles
Andrea Scott
ConceptLow pass
High rezgeometry
Gameplay tuning
Audio layout
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•3 minute tour•Challenges & Solutions•Summary•Q&A
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Real world experiences• Scrum teams experience less crunch
• If they establish a definition of done• If they have a shared vision
• Lean is a better fit for production• It’s compatible with Scrum
• Success is not determined by agile• Vision• Talent• Teamwork• Leadership
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Agile Game Development book
• Fall 2009 release• ISBN 0321618521
• Currently in 2nd draft• Want feedback
• See me after
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Conclusion
• For more information• www.AgileGameDevelopment.com• www.ClintonKeith.com
• Onsite workshops• Public classes• Coaching• Info up front
• Questions?
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Conclusion
• For more information• www.AgileGameDevelopment.com• www.ClintonKeith.com
• Questions?