Prototype slot machine logic for iOS

gistfile1.m

-(IBAction)spin:(id)sender { 
	int max = 4;
	int min = 0;
	
	int c1 = rand() % max + min;
	int c2 = rand() % max + min;
	int c3 = rand() % max + min;
	
	[carousel1 scrollByNumberOfItems:250+c1 duration:3.5f];
	[carousel2 scrollByNumberOfItems:250+c2 duration:4.0f];
	[carousel3 scrollByNumberOfItems:250+c3 duration:4.5f];
	
	dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
		sleep(5);
		dispatch_async(dispatch_get_main_queue(), ^{
			int r1 = carousel1.currentItemIndex;
			int r2 = carousel2.currentItemIndex;
			int r3 = carousel3.currentItemIndex;
			UIAlertView *alert = [[UIAlertView alloc] init];
			if (r1 == r2 && r2 == r3) {
				// full match
				alert.message = @"Full match";
			}
			else if (r1 == r2 || r1 == r3 || r2 == r3) {
				// got 2 matches
				alert.message = @"Partial match";
			}
			else {
				// no match anywhere
				alert.message = @"No match";
			}
			[alert addButtonWithTitle:@"OK"];
			alert.cancelButtonIndex = 0;
			[alert show];
			[alert release];
		});
		
	});

}