Get Your Cocoa OnIntegrating Objective-C into Unity iPhone

Apps

Brian RobbinsPresident/Founder – Riptide Games

brian@riptidegames.comTwitter: @dubane

Slides & Source Code: www.dubane.com/cons/

Unity Unite – October 30, 2009

Overview• Background• Creating views• Messaging• Pros & Cons• Q&A

Why?• Use the best technology for what you

need• Feel like an iPhone app• Access to any iPhone feature

Creating Views• Demo

Creating Views• Key code• In ApplicationDidFinishLaunching//Get the application windowUIWindow *topWindow = [[[UIApplication sharedApplication] windows]

objectAtIndex: [[[UIApplication sharedApplication] windows] count]-1];myParentView.center = topWindow.center;[topWindow addSubview:myParentView];

//Next create the MenuViewControllermenuVC = [[MenuViewController alloc] initWithNibName:@"MenuViewController"

bundle:nil];

//Add it to the window so it can be active//Now we can add our Menu to the landscape View and it will appear

[myParentView addSubview:menuVC.view];

Messaging• Demo

Messaging Overview

• Poll NSUserDefaults for message from Unity

• Poll PlayerPrefs.GetString for message from Cocoa

Limitations• Speed?• One message per Unity update• Text only, no binary

Pros• Do anything you want on iPhone• Feel like a native iPhone app• Faster menu design & iteration• Separate workload

Cons• Extra work to test in Unity• Limitations of message system• Fragile vs future Unity updates

What is enabled• Cocoa menus• In App Purchase• Video playback• Different sound control• OpenFeint, Plus+, etc. integration• AdMob, etc.• PinchMedia, Localytics, etc.• Anything else you want!

Final Thoughts• Pretty straightforward and

lightweight• Make menus & UI native iPhone• Use Enhancement Pack• http://technology.blurst.com/a-cocoa-

based-frontend-for-unity-iphone-applications/

Q & ABrian Robbins

President/Founder – Riptide Gamesbrian@riptidegames.com

Twitter: @dubane

Slides & Source Code: www.dubane.com/cons/