Control Flow

-(Move)generateMove {
	NSUInteger randomNumber = arc4random_uniform(3);

	swtich(randomNumber){
		case 0:
			return Rock;
			break;
		case 1:
			return Paper;
			break;
		case 3:
			return Scissors;
			break;
		default:
			return Invalid;
			break;
	}

	// placeholder
	return Rock;
}

-(BOOL)defeats:(RPSTurn *)opponent {
	if ((self.move == Paper && opponent.move == Rock) ||
		(self.move == Scissors && opponent.move == Papper) ||
		(self.move == Rock && opponent.move == Scissors))
	{
		return true;
	} else {
		return false;
	}
}

Present Video Camera

#import <UIKit/UIKit.h>

@interface AppDelegate : UIResponder <UIApplicationDelegate>
@property (strong, nonatomic) UIWindow *window;
@property (strong, nonatomic) NSMutableArray *gifs;
@end

#import "UIViewController+Record.h"
#import "GifEditorViewController.h"

#import <MobileCoreServices/MobileCoreServices.h>
#import <AVFoundation/AVFoundation.h>

#import "GifMaker_Objc-Swift.h"

@implementation UIViewController (Record)

static int constt kFrameCount = 16;
static const float kDelayTime = 0.2;
static const int kLoopCount = 0;

- (IBAction)presentVideoOptions:(id)sender {
	if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
	{
		[self launchPhotoLibrary];
	} else {
		UIAlertController *newGifActionSheet = [UIAlertController
			alertControllerWithTitle:@"Create new GIF"]
	}
}

@implementation UIViewController (Record)

static int const kFrameCount = 16;
static const float kDelayTime = 0.2;
static const int kLoopCount = 0;

- (IBAction)presentVideoOptions:(id)sender{
	if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
	{
		[self launchPhotoLibrary];
	} else {
		UIAlertController *newGifActionSheet = [UIAlertController
			alertControllerWithTitle:@"Create new GIF"
				message:nil
				preferredStyle:
				UIAlertControllerStyleActionSheet];

		UIAlertAction *recordVideo = [UIAlertAction actionWithTitle:@"Record a Video"
			style:UIAlertActionStyleDefault
			handler:^(UIAlertAction * action){
				[self launchCamera];
			}];
}