My presentation for HTML5 Game development done at the Software Craftsmanship McHenry County.

1. HTML5
Game
Development
#likeacraftsman
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2. Monday, September 26, 2011 2

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13. Monday, September 26, 2011 13

14. Nuts And Bolts
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15. Canvas
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16. Canvas
<canvas width="200" height="200">
This Browser doesn't support the canvas.
</canvas>
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17. Monday, September 26, 2011 17

18. context.save();
context.setTransform(1,0,0,1,0,0);
context.translate(400, 300);
context.rotate(playerState.rotationAngle);
context.drawImage(player, -37, -30);
context.restore();
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19. Audio
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20. Audio
backgroundMusic.play();
backgroundMusic.pause();
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23. function gameLoop() {
update();
draw();
}
setInterval(function() { gameLoop(); }, this.getTickTime())
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24. this.loop = function() {
while (scheduler.getTicks() > nextGameTick) {
updaterList.update();
nextGameTick += scheduler.getTickTime();
}
screen.render();
};
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25. Tests
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26. Monday, September 26, 2011 26

27. Monday, September 26, 2011 27

28. NO GUI!
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29. NO GUI!
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30. +
•JSDom
•Node-JQuery
•Underscore
•Bullets suck
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31. HOW?
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32. Monday, September 26, 2011 32

33. Context = function() {
this.drawImage = function(image, x, y) {
imageList.push({name: image, x: x, y: y});
};
this.fillRect = function(x, y, width, height) {
this.filledRect = {x: x, y: y, width: width, height: height };
};
};
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34. context = new Context();
screen = new Eskimo.Screen(context);
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35. screen.render();
expect(context).toHaveScreenClearedTo("#aaaabb");
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36. Why?
screen.put(image);
screen.render();
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37. JSDom
• Simulates the DOM
• Doesn’t Support HTML5
• Bullets suck
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38. define("HTMLAudioElement", {
tagName: 'AUDIO',
attributes: [
'src'
]
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39. levelLoader.load("newLevel");
spiedJQuery.triggerEvent("canplaythrough");
jukebox = levelLoader.getJukebox();
var asset = jukebox.assets.get('soundOne').src;
expect(asset).toEqual('sound.mp3');
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40. Simulators
are hard!
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41. Game Logic
Interaction
DOM
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42. Spies
spyOn(levels, "load");
TitleScreen.load(levels, screen);
expect(levels.load)
.toHaveBeenCalledWith('title', TitleScreen);
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43. Acceptance
Player 1 Player 2 Winner
Rock Paper Paper
Paper Scissors Scissors
Scissors Rock Rock
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44. Architecture
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45. Monday, September 26, 2011 45

46. FeedTheQuinn.Assets = {
'title': {
'images': {
'background': {
'src': 'images/title_screen_background.jpg',
'location': {
'x': 0,
'y': 0
}
},
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47. Respawn
Dead
Alive
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50. Monday, September 26, 2011 50

51. if (intersects(humanControlledBitmap.currentlyHeldKillableObject,
otherGameObject.boundingBox) &&
otherGameObject.isCapableOfEndingGame?) {
gameObjectList.remove(otherGameObject);
numericValueRepresentingAPositiveReinforcementOfPlayerBehavior
+= 100241;
}
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52. player.kill(zombie);
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53. player.decapitate(zombie);
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54. JavaScript
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55. Design
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56. Eskimo!
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57. Thanks
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