Test Invaders

An interactive crash course focusing on fast feedback, test-driven development, incremental delivery, and automated deployment.

In this hands-on activity, Continuous Delivery will be demonstrated via a classic favourite, “Space Invaders”.

There is something for everybody!

Transcript

1. A Brief Introduction to
   Space Invaders
   

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2. Humanity’s Last and Best Hopes
   @quadhome
   @gardym
   Mike, say something funny about yourself.
   Scott, admit your greatest fear is talking in front of a group of strangers.
   

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3. When the fate of the world is on the line...
   (Really) Fast Feedback
   Test Driven DevelopmentDESIGN
   Continuously Continuous Delivery
   1-Click® Deployment
   Why are we here? To have fun and learn...
   FF: the speed of a team of a development team is dependent on how fast we can react
   TDD: Because evolving code with tests guides our design.
   CD: When changes are made, we can immediately put them out with confidence.
   Deployment: Don’t want to schedule a release to save the world... but, actually...
   

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4. The Real Reason
   §
   KEEP
   CALM
   AND
   RETRO
   GAME
   

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5. εϖʔεΠϯϕʔμ
   Designed engineer and built by Tomohiro Nishikado in 1978
   Who, according to Wikipedia, had a dream about Japanese school children attacked by invading aliens whilst waiting for Santa
   Claus. HISTORY: STRANGER THAN FICTION
   

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6. An Invader
   What’s funny about the Invader? Nothing. There’s here to destroy planet Earth.
   

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7. The Swarm
   It’s common knowledge that all alien invasions come in swarm form. The worst form.
   

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8. The Tank
   Our last, best, most advanced but lowest resolution defence against skyborn menaces.
   

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9. The Tank’s Bullet
   They go up.
   

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10. An Invader’s Bullet
    They go down.
    

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11. An approximation of game programming
    while(true) {
    update_everything(time, input);
    collide_everything();
    draw_everything();
    }
    Event loop. Move everything, see what got hit, and then draw the results... like a Space Invader...
    

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12. The Theatre of War
    (0,0)
    (width, height)
    (x, y)
    (width, height)
    An invader and
    its bounding box
    Collisions occur when
    bounding boxes overlap
    Invader {
    active: [true, false]
    box: { x, y, width, height }
    update(time, input)
    collide(what hit)
    team: [Team.Earth,
    Team.Invader]
    }
    

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13. So let’s play!
    testinvaders.heroku.com
    

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