"In this session we'll explore modern cross platform game development, focusing on simple game design concepts for maximizing fun and classic games programming techniques for maximizing frame rates. We'll use Xamarin Studio to target iOS and Android off the same code base and the power of F# to allows us to put together a game in less than 4 hours."

1. READY, STEADY, CROSS
PLATFORM GAMES ON
YOUR PHONE
Phillip Trelford, @ptrelford
Progressive .Net Tutorials 2015, #prognet

2. DON’T GAME CODERS USE C++?
YES
• Engines
• Graphics
• Sound
• Physics
NO
• Scripts
• AI
• Interaction
• Tools

3. DO THEY REGRET IT?
Veteran Games Programmer John
Carmack extolling the virtues of
functional programming at QuakeCon

4. THE F IN F# STANDS FOR FUN!
Phillip Trelford, @ptrelford
Progressive .Net Tutorials 2015, #prognet

5. QUAKE 3 – F# SCRIPT
Will Smith @TIHanTime6h
@brandewinder @7sharp9 Finally got something going in #FSharp #Quake3. Messing
around with the weapon position. :) pic.twitter.com/zAZ439Kdch

6. F# FOR PROFIT
Functional-first programming for:
• Time to Market
• Efficiency
• Correctness
• Complexity

7. F# TESTIMONIALS
order of magnitude increase in productivity, GameSys
performance is 10× better than the C++ that it replaces, Insurance Co.
Units of measure reduced the chance of errors dramatically, Bing
F# is the night vision goggles I need when I go into the dark and attempt to
solve previously unsolved problems, Microsoft

8. MOBILE?
Phillip Trelford, @ptrelford
Progressive .Net Tutorials 2015, #prognet

9. PORTABLE IS DEAD…
LONG LIVE MOBILE
• Android games now out-selling games for Sony and Nintendo handhelds
• IDC and App Annie's study suggests that iOS and Android combined now
generate four times the revenues of dedicated gaming handhelds
- Guardian

10. CROSS PLATFORM GAME ENGINES
Designer-orientated
• Unity (C#, F#, JavaScript, Boo)
• PhoneGap (JavaScript, F#, …)
• Marmalade
• …
Code-orientated
• XNA/MonoGame (C#, F#)
• PyGame (Python)
• Love (Lua)
• DirectX (C++)

11. F# FOR GAMES

12. EXAMPLE APPS
Path to Go | XBLA Pissed off Owls| iOS Pool | WebGL

13. FRAMEWORKS FOR GAMES
•.Net
•WPF/Silverlight/WinRTXAML
•.Net/Mono
•XNA/MonoGameXNA
•F# to JS Compilation
•WebSharper/FunScriptHTML5

14. XNA IS DEAD
Phillip Trelford, @ptrelford
Progressive .Net Tutorials 2015, #prognet

15. LONG LIVE MONOGAME
• Develop in Visual Studio (PC) or Xamarin Studio (Mac & PC)
• Cross Platform
• iOS
• Android
• Windows
• Mac OSX
• Linux
• Playstation Mobile
• Ouya

16. CROSS PLATFORM F#
.Net
•Windows
•Windows Store
•Windows
Phone
Mono
•Mac
•Linux
•iOS
•Android
•Ouya
•Playstation Vita
JS
•Chrome/IE
•iOS
•Android
•Blackberry
•Windows
Phone
•Windows Store

17. BUT WAIT…

18. PROTOTYPE
10 WRITE Prototype
20 PLAY Prototype
30 IF fun THEN GOTO 20
40 GOTO 10

19. THE GAME LOOP
User Input
Logic
Collision
Detection
Score
Render

20. TASKS

21. TASK 1: BRAIN TRAINING

22. TASK 2: FLAPPY BIRD

23. RESOURCES

24. CHOOSE YOUR OWN ADVENTURE

25. TOOLING
MonoGame
Paint.Net / Gimp
MusicMaker Jam
Bxfr.Net (Sound effects)
Google

26. F# KOANS
//---------------------------------------------------------------
// About Let
//
// The let keyword is one of the most fundamental parts of F#.
// You'll use it in almost every line of F# code you write, so
// let's get to know it well! (no pun intended)
//---------------------------------------------------------------
[<Koan(Sort = 2)>]
module ``about let`` =
[<Koan>]
let LetBindsANameToAValue() =
let x = 50
AssertEquality x __

27. TRYFSHARP.ORG

28. BUY THE BOOK

29. Steps:
1. Enter game jams
2. Join 1 game a month
3. Publish your indie game
4. Make $$$
5. Go to 1