Mobile Browser Games - Topconf Tallin - HTML5 Games, Browsers

Mobile browsers promise a broad range of features applicable for rich multi-media applications, such as games. Without the limitation of desktop legacy systems, developers are encouraged to make heavy use of new web technologies from the CSS3 and HTML5 spec. However, implementation quality differs greatly between systems. This talk will show how the cornerstones of multi-media apps, such as animation and sound, differ from their well-known counterparts in the desktop world once they reach mobile devices, and what you can do to implement robust solutions.

Transcript

1. Mobile Browser Games Great Expectations Topconf Tallinn ‑ November 2013
2. Tere
3. @ddprrt gplus.to/spider‑man
4. Netural
5. Netural Frontend
6. workingdraft.de
7. This Site has been optimized for Internet Explorer 3
8. We've come a long way
9. A new mindset
10. Vegas in your browser!
13. Just mobile browsers?
14. Just modern browsers!
15. Mobile Browser Games ‑ Great Expectations
16. the numbers on the roulette wheel add up to 666 ... and now I know why
17. Mobile Safari iOS 5 / iOS 6 Native Android Browser 2.x, 3.x, 4.x Mostly Samsung Galaxy Devices Internet Explorer 9 Windows Phone 7
18. Animation: The Possibilites DOM Manipulation CSS Transitions / Animations Canvas
19. Animation with Canvas
20. Pigs of Awesome ‑ iOS
21. Pigs of Awesome ‑ WinPhone 7
22. Pigs of Awesome ‑ Android
23. How do you feature‑test low FPS?
24. Transitions, then
25. iOS
26. a n i m a t e ( v a r f r o m , v a r t o ) { / / M A G I C . . . } t r a n s i t i o n ( ) { a n i m a t e ( 0 % , 1 0 0 % ) ; s t a t e ( 1 0 0 % ) ; } What happened on Android?
27. IE: Fair enough
29. . c a r d { w i d t h : 1 0 0 p x ; h e i g h t : 1 2 0 p x ; t r a n s f o r m - s t y l e : p r e s e r v e - 3 d ; p e r s p e c t i v e : 1 0 0 0 ; } . c a r d > d i v { b a c k f a c e - v i s i b i l i t y : h i d d e n ; t r a n s i t i o n : t r a n s f o r m 0 . 5 s l i n e a r ; } . b a c k { t r a n s f o r m : r o t a t e Y ( 0 d e g ) ; } . f r o n t { t r a n s f o r m : r o t a t e Y ( 1 8 0 d e g ) ; } . f l i p . b a c k { t r a n s f o r m : r o t a t e Y ( - 1 8 0 d e g ) ; } . f l i p . f r o n t { t r a n s f o r m : r o t a t e ( 0 d e g ) ; } CSS Flip
30. < d i v c l a s s = " c a r d " > < d i v c l a s s = " b a c k " > < / d i v > < d i v c l a s s = " f r o n t " > < / d i v > < / d i v > HTML
31. 3 A A A iOS
32. Well then, User Agents again...
33. Orientation
34. Landscape
35. Portrait
36. @ m e d i a o n l y s c r e e n a n d ( o r i e n t a t i o n : p o r t r a i t ) @ m e d i a o n l y s c r e e n a n d ( o r i e n t a t i o n : l a n d s a c p e ) CSS
37. w i n d o w . o n o r i e n t a t i o n c h a n g e = f u n c t i o n ( ) { v a r o r i e n t a t i o n = w i n d o w . o r i e n t a t i o n ; / / o r i e n t a t i o n i n d e g r e e s s w i t c h ( o r i e n t a t i o n ) { c a s e 0 : / / i O S p o r t r a i t . . . b r e a k ; c a s e 9 0 : / / i O S l a n d s c a p e . . . b r e a k ; c a s e - 9 0 : . . . b r e a k ; } } JavaScript
38. ... but
39. v a r m q l = w i n d o w . m a t c h M e d i a ( " ( o r i e n t a t i o n : p o r t r a i t ) " ) ; m q l . a d d E v e n t L i s t e n e r ( f u n c t i o n ( m ) { i f ( m . m a t c h e s ) { / / d o p o r t r a i t s t u f f } e l s e { / / d o l a n d s c a p e s t u f f } } ) Better
40. b o d y : a f t e r { c o l o r : t r a n s p a r e n t ; c o n t e n t : ' p ' ; p o s i t i o n : a b s o l u t e ; l e f t : - 1 0 0 % ; / / o f f s c r e e n } @ m e d i a o n l y s c r e e n a n d ( o r i e n t a t i o n : l a n d s a c p e ) { c o n t e n t : ' l ' ; } Hacky
41. v a r b o d y A f t e r S t y l e = w i n d o w . g e t C o m p u t e d S t y l e ( d o c u m e n t . b o d y , " : a f t e r " ) ; w i n d o w . o n o r i e n t a t i o n c h a n g e = f u n c t i o n ( ) { i f ( b o d y A f t e r S t y l e . c o n t e n t = = ' p ' ) { / / d o p o r t r a i t s t u f f } e l s e i f ( b o d y A f t e r S t y l e . c o n t e n t = = ' l ' ) { / / d o l a n d s c a p e s t u f f } } Hacky
42. Let there be sound!
43. Yeah to compatibility
44. Basic API .play() .pause() .currentTime
45. Basic API .duration 'timeupdate' 'ended'
46. a u d i o O n e = d o c u m e n t . g e t E l e m e n t B y I d ( ' a u d i o O n e ' ) ; a u d i o T w o = d o c u m e n t . g e t E l e m e n t B y I d ( ' a u d i o T w o ' ) ; a u d i o O n e . a d d E v e n t L i s t e n e r ( ' e n d e d ' , f u n c t i o n ( ) { a u d i o T w o . p l a y ( ) ; } ) ; / / c l i c k o n A u d i o O n e Demo
47. Desktop
48. Mobile Webkit
50. Just on Touch!
51. There can be only one!
52. v a r m a p = [ { s t a r t : 0 , e n d : 2 } , { s t a r t : 3 , e n d : 4 } ] ; f u n c t i o n p l a y ( e n t r y ) { a u d i o . c u r r e n t T i m e = m a p [ e n t r y ] . s t a r t ; a u d i o . p l a y ( ) ; a u d i o . a d d E v e n t l i s t e n e r ( ' t i m e u p d a t e ' , f u n c t i o n ( ) { i f ( a u d i o . c u r r e n t T i m e > m a p [ e n t r y ] . e n d ) { a u d i o . p a u s e ( ) ; } } ) ; }
53. 3 7 7 7 7 3 7 7 7 7 3 7 7 7 7 Desktop, Android, iOS
54. iOS doesn't like Variable Bitrates
55. But wait! You can't access currentTime in IE9
57. f u n c t i o n t e s t A u d i o ( ) { a u d i o . s r c = " 1 s s i l e n c e . m p 3 " ; t r y { a u d i o . p l a y ( ) ; a u d i o . a d d E v e n t L i s t e n e r ( ' e n d e d ' , f u n c t i o n ( ) { u s e F i l e = t r u e ; } ) ; } c a t c h ( e ) { u s e F i l e = f a l s e ; } } Audio Test
58. Final tips
60. ... use it!
61. Prototype
62. Safari?
63. Safari, you are doing it wrong
64. What's next?
65. Chrome is coming
66. Android version distribution, March 2013 Source: bgr.com
67. Firefox is already there
68. Mobile browsers: The future?
69. Fin