This document discusses HTML5 games and their status. It notes that HTML5 allows for cross-device games with one codebase and dynamic updates. However, JavaScript performance can be low, memory management is difficult, and there are browser quirks. The document outlines HTML5 technologies for games like JavaScript, Canvas, and WebGL. It discusses technical issues around performance, APIs, screen sizes, and UIs. It introduces Bluega's vision and game engine for HTML5 games that run across devices and are serviced online.

1. HTML5 Games
Status and issues
Hong,Sechul/CTO
www.bluega.com

2. 2
Why HTML5 Game?
 Cross device running (with one source code)
 Dynamic update (without explicit installation)
However…

3. 3
Problems
 JavaScript - Dynamic binding interpreter language
 Low performance
 Hard to manage memory
 Browser quirks
 Browser/device performance discrepancy
 Sound and device API
 Packaging
 HTML5 is originally not for games!

4. 4
HTML5 for game development
 Controlling
• JavaScript
 Rendering
• HTML5 DOM/CSS3
• HTML5 Canvas
• HTML5 WebGL
 Sound
• HTML5 Audio API
• WebAudio API(Chrome)

5. 5
Renderer for games
In view of commercializing HTML5 games;
Devices Game types
HTML5 • PC Browsers (Even non-HTML5 Plain, Tile-map,
DOM/CSS3 Browsers) Arcade
• Android/iOS
• TIZEN
• Some TV/Set-top-box
HTML5 • HTML5 PC Browsers Plain, Tile-map,
Canvas • iOS Arcade, Physics
• TIZEN(?)
• Some TV/Set-top-box(?)
HTML5 • Chrome Brower on Windows 3D(OpenGL like)
WebGL

6. 6
Market perspectives by renderer
In view of commercializing HTML5 games;
 HTML5 DOM+Canvas
• Cross device running
• Game type : Social, Casual
 HTML5 Canvas
• PC
• Game type : Social, Casual, Physics
 WebGL
• Existing iOS and Android games to Chrome web store
• Game type : 3D

7. 7
Technical Issues - JavaScript
 Interpreting, dynamic binding
 Implicit garbage collection
 Vulnerable environment for developers
 Need to impose strict coding pattern
 Need framework, engine
 Recycling of resource

8. 8
Technical Issues – HTML5 Specs (1/2)
 HTML5 implementations are stable over browsers.
But, problems are mostly on Device API.
 Viewport control – Screen lock, Orientation lock, Full-
screen
 For some platform, need to package as native application
 Android has more problems when running as web site
 Audio API
 Unstable and lots of quirks in implementation
 Only 1 channel for many browsers
 Preparing new WebAudio API

9. 9
Technical Issues – HTML5 Specs (2/2)
 Storage API
 Using File-System API along with Cookie
 For permanent and critical data, need server backup.
 Packaging & Installation
 PC : Hard to package large game. Hard to add Ad with installable
package. Mostly hosting with CDN.
 Mobile : W3C widget like package. Native application(Hybrid).
Hosting is relatively good for iOS(without sound)
 MouseLock API, JoyStick API
 Developing by Google

10. 10
Technical Issues – Screen sizes
 Matter of game geometric type, level design, graphical
assets and layouts. Not specific to HTML5 games.
 HTML5 itself is good for resizing - Relative coordination
system, CSS, Zooming
 Relative coordination from the beginning of development
 CSS tricks
 Zooming : Drops performance a lot. (But, TIZEN looks good!)
 BLUEGA : Using Game level editor

11. 11
Technical Issues – Game UI
 Need to develop game’s other screens, dialogs and menu.
 Need some UI framework library for renderer
 HTML5 itself is very good for developing UI. UI
frameworks such jQuery, Sencha, …
 BLUEGA : Developing all Game UI in HTML5 DOM even running
with HTML5 Canvas. (Using own jBLUX)

12. 12
BLUEGA

13. 13
BLUEGA – Vision on HTML5 games
Native Web
Web Web Web
Game Game Game
iOS
Android Game Game Logic Engine
OS Editor Scroll Engine
Tile Map Engine
Isometric Engine Web
Browser
Game Engine Network
Core Core
Network
jBLUX HTML5 UI Framework
server
HCL (Handset Capability Layer)
iPhone / iPad Android Phone/Tab PC Phone / Pad Smart TV
BXG-RUN BXG-RUN

14. 14
BLUEGA - Performance
 BLUEGA is focusing on “Cross device running game” and
“Serviced game”
 FPS : 20~30
 Dynamic objects : 30~60 with collision detection
 Static image : 1000~4000
 Sound
• 3~4 Channel with stable Audio API
• 1 Channel with unstable Audio API

15. 15
BLUEGA – Twinkle Pop
 Bubble game with hexagonal tile-map
 Published in Facebook, CWS, Google Play, Apple Store,
TIZEN, Web portal
• CWS URL
https://chrome.google.com/webstore/detail/jlmcmmeajfebnmfkjipnmkbjkdcfgbbj
• Web URL
http://laputagames.com/each/tp/
• Technical notes
http://www.bluega.com/html5-game-engine_technical_notes_twinkle_pop/

16. 16
BLUEGA – Crazy Chicken
 Tower defense game with orthogonal tile-map
 Published in K-Apps

17. 17
BXG BLUX Game Engine

18. 18
BXG - HTML5 Game Engine
HTML5 Game Engine for
Cross game, Hybrid web game
• High and consistent performance for
wide range of devices
• Hot swap between three renders
(DOM, DOM+Canvas, Canvas)
• Virtual input devices, Audio
• Casual, arcade, shooting, social
game
- Isometric, Orthogonal, Hexagonal
- Scrolling
- Multi-layer
• Game Editor
• Run-time for iOS, Android

19. 19
Engine release plan
 BXG Core - Early August, 2012
• JavaScript library
• API Reference, Tutorials and Knowledge Base
• Sample games and code
• WRT – WAC, PhoneGap, BXGrun(Android, iOS)
• Hands-on class planning in August, 2012
 BXG Editor - Early October, 2012
• Hosted as web site, not only for BXG
• “Dropbox” as file storage

20. 20
THANK YOU
Contact Us
www.bluega.com
www.facebook.com/bluega
sales@bluega.com
Korea:
Phone: +82-70-8228-8721
FAX : +82-31-714-0847
USA:
Phone: +1-714-325-0264