Microsoft Windows Phone 8 offers native code support that enables development and porting of high-performance games. This training-lab webinar will give you an overview of Windows Phone 8 capabilities that support complex games development. It also will introduce available tools and frameworks that increase developer productivity and will demonstrate a hands-on approach to games development with the Windows Phone SDK 8. By leveraging frameworks such as the Microsoft Direct3D API and support for popular physics and rendering engines, you can now create games with native performance as well as use your own or third-party engines and middleware for games development for Windows Phone 8 users.

1. LUMIA APP LABS #7
GAMES
DEVELOPMENT
Lucian Tomuta
Chief Engineer

2. AGENDA
What’s new on Windows Phone 8?
How do I write my game?
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© 2013 Microsoft. All rights reserved.

3. WHAT’S NEW?
- New and improved hardware
- XNA replaced by a new Windows Phone game platform:
- Maintains XNA compatibility
- Reduce the cost to target Windows Phone
- Allow use of native code (C++)
- Share a large set of APIs with Windows 8
- Power of Direct3D (native or with XAML)
- Improved monetisation
© 2013 Nokia. All rights reserved. 1/23/2013
© 2013 Microsoft. All rights reserved.

4. - Qualcomm Snapdragon S4
- 1.5 GHz / 1 GHz
- Adreno 225 / Adreno 305
- 768x1280 / 480x800 pixels
- 1 GB (512 MB)
- NFC, sensors, 4G …
http://developer.nokia.com/Devices
© 2013 Nokia. All rights reserved. 1/23/2013
© 2013 Microsoft. All rights reserved.

5. GAME ENGINES
Havok
FMOD
Wwise Unity
Ogre Cocos2D
Scaleform
Marmalade
© 2013 Nokia. All rights reserved. 1/23/2013
© 2013 Microsoft. All rights reserved.

6. DIRECT3D APP MODEL
C++ only
Access to the new Windows Phone 8 APIs
• Windows Runtime APIs, COM and Win32 style APIs
• Which APIs can I call? http://tinyurl.com/WP8APIQS
Reuse your C++ code
• Statically linked or a DLL
Supports activation and app lifecycle
• CoreApplication, CoreWindow, CoreDispatcher
© 2013 Nokia. All rights reserved. 1/23/2013
© 2013 Microsoft. All rights reserved.

7. XAML APP MODEL
XAML app model extended
C++ code reuse
• Your own or other C++ libraries
• Call COM / Win32 style APIs from within Windows runtime components
Full access to the new Windows 8 shared API surface
• Windows phone runtime APIs, COM and Win32 style APIs
Direct3D composition
• Render into a XAML scene from C++/Direct3D
• 2 new XAML elements
© 2013 Nokia. All rights reserved. 1/23/2013
© 2013 Microsoft. All rights reserved.

8. XAML + DIRECT3D
DrawingSurface
• Place anywhere
• Draw to it from C++/Direct3D
• Automatic composition with other
XAML elements
• Uses a Direct3D swap chain
© 2013 Nokia. All rights reserved. 1/23/2013
© 2013 Microsoft. All rights reserved.

9. XAML + DIRECT3D
DrawingSurfaceBackgroundGrid
• The root element of the xaml page
• You render to the from
C++/Direct3D
• Does not use a Direct3D swap chain
• Performs better
• Grid children are rendered on top
© 2013 Nokia. All rights reserved. 1/23/2013
© 2013 Microsoft. All rights reserved.

10. XAML OR DIRECT3D APP ?
XAML app
• You need access to live tiles, notifications, background agents, XAML UI,…
Direct3D app
• You need the absolute best performance
• You don’t need what the XAML app gives you
How hard is it to switch?
• It is very straightforward
© 2013 Nokia. All rights reserved. 1/23/2013
© 2013 Microsoft. All rights reserved.

11. NATIVE DIRECT3D APPLICATION
API: Direct3D 11.1
Hardware capabilities: feature level 9.3
Subset of Windows 8
• No Windows Imaging Component (WIC)
• No Direct2D or DWrite DirectXTex: texture processing library
Removed legacy features http://codeplex.com/directxtex
• No GDI
• No D3DX
DirectX Tool Kit
• No fixed function
http://codeplex.com/directxtk
• No runtime shader compilation
© 2013 Nokia. All rights reserved. 1/23/2013
© 2013 Microsoft. All rights reserved.

12. INPUT & SENSORS
Input Windows.Devices.Sensors
• PointerPressed, PointerMoved, Accelerometer
PointerReleased Gyrometer
• KeyDown, KeyUp, Orientation
CharacterRecieved, Show/Hide
Onscreen Keyboard Compass
Inclinometer
Supports Polling and Events
© 2013 Nokia. All rights reserved. 1/23/2013
© 2013 Microsoft. All rights reserved.

13. AUDIO SUPPORT
XAudio2
Looping, 3D positioning, DSP effects, etc.
Many at once
In-memory PCM or ADPCM data
IMFMediaEngine
One at a time
Compressed (MP3, WMA)
Asynchronously streamed from the file system or URI
© 2013 Nokia. All rights reserved. 1/23/2013
© 2013 Microsoft. All rights reserved.

14. VIDEO CUTSCENE SUPPORT
Use IMFMediaEngine
Initialise and set source
Control playback
Render video
• Game retrieves video frame and renders video frame on the texture of an object in
the game
• Game uses OnVideoStreamTick to find out whether a new video frame is ready
• Game uses TransferVideoFrame to copy video frame to DXGI surface
• OS can render RGB and YUV(NV12) formats
© 2013 Nokia. All rights reserved. 1/23/2013
© 2013 Microsoft. All rights reserved.

15. MULTIPLAYER GAMES
TCP sockets with SSL support using
StreamSocket/StreamSocketListener
UDP sockets using DatagramSocket
C++ HTTP support via XmlHTTPWebRequest2
Winsock
Peer Finder API
NFC based player discovery
Play via WLAN or Bluetooth http://projects.developer.nokia.com/nfctalk
© 2013 Nokia. All rights reserved. 1/23/2013
© 2013 Microsoft. All rights reserved.

16. GAME CLOUD
Nokia Premium Developer Program
and Buddy.com
User account management
Scoreboards and achievements
Push Notifications
Cross-platfom
1.000.000 API calls/month for a year
© 2013 Nokia. All rights reserved. 1/23/2013
© 2013 Microsoft. All rights reserved.

17. HOW DO I MAKE MONEY
- Ads
- Cross-platform advertising solution offered by Nokia Ad Exchange
- Try and buy
- In-app purchase
- Support for durable (game levels) and consumable (coins) items
- Can be used from XNA games as well, see http://tinyurl.Com/iaplightup
© 2013 Nokia. All rights reserved. 1/23/2013
© 2013 Microsoft. All rights reserved.

18. TIP!
Test your application on low memory devices!
Test your application on high resolution devices!
© 2013 Nokia. All rights reserved. 1/23/2013
© 2013 Microsoft. All rights reserved.

19. TIP!
Your app can use up to 150 MB of available memory (up from 90 MB)
If you need more, add the following capability to the app manifest:
<App>
…
<FunctionalCapabilities>
<FunctionalCapability Name="ID_FUNCCAP_EXTEND_MEM"/>
</FunctionalCapabilities>
</App>
This will allow your app to use up to 180 MB on low spec devices or even
380 MB on devices with > 1 GB
© 2013 Nokia. All rights reserved. 1/23/2013
© 2013 Microsoft. All rights reserved.

20. TIP!
If your application cannot run at all on low memory devices, use
ID_REQ_MEMORY_300
<App>
…
<Requirements>
<Requirement Name="ID_REQ_FRONTCAMERA" />
<Requirement Name="ID_REQ_MEMORY_300" />
</Requirements>
</App>
This will make your app visible only to devices with 1GB RAM or more.
© 2013 Nokia. All rights reserved. 1/23/2013
© 2013 Microsoft. All rights reserved.

21. Thank you!
© 2013 Nokia. All rights reserved. 1/23/2013
© 2013 Microsoft. All rights reserved.