Added support for score sort order as defined in Game Center. We want…

… to report a score to Game Center when the new score is lower than the old score if the game’s sort order is Low to High.

GameCenterManager/GC Manager/GameCenterManager.h

@@ -17,6 +17,11 @@
 #import "Reachability.h"
 #import "NSDataAES256.h"
 
+typedef enum GameCenterSortOrder {
+    GameCenterSortOrderHighToLow,
+    GameCenterSortOrderLowToHigh
+} GameCenterSortOrder;
+
 @protocol GameCenterManagerDelegate;
 @interface GameCenterManager : NSObject {
     NSMutableArray *_leaderboards;
@@ -35,7 +40,7 @@
 - (void)syncGameCenter;
 
 // Saves score locally and reports it to Game Center. If error occurs, score is saved to be submitted later.
-- (void)saveAndReportScore:(int)score leaderboard:(NSString *)identifier;
+- (void)saveAndReportScore:(int)score leaderboard:(NSString *)identifier sortOrder:(GameCenterSortOrder)order;
 
 // Saves achievement locally and reports it to Game Center. If error occurs, achievement is saved to be submitted later.
 - (void)saveAndReportAchievement:(NSString *)identifier percentComplete:(double)percentComplete shouldDisplayNotification:(BOOL)displayNotification;

GameCenterManager/GC Manager/GameCenterManager.m

@@ -130,7 +130,7 @@ - (BOOL)checkGameCenterAvailability {
                 self.isGameCenterAvailable = YES;
                 return YES;
             }
-       }
+        }
     }
 }
 
@@ -337,7 +337,7 @@ - (void)reportSavedScoresAndAchievements {
 #pragma mark - Score and Achievement Reporting
 
 //Save score and report it to GameCenter
-- (void)saveAndReportScore:(int)score leaderboard:(NSString *)identifier {
+- (void)saveAndReportScore:(int)score leaderboard:(NSString *)identifier sortOrder:(GameCenterSortOrder)order  {
     NSData *gameCenterManagerData = [[NSData dataWithContentsOfFile:kGameCenterManagerDataPath] decryptedWithKey:kGameCenterManagerKey];
     NSMutableDictionary *plistDict = [NSKeyedUnarchiver unarchiveObjectWithData:gameCenterManagerData];
     NSMutableDictionary *playerDict = [plistDict objectForKey:[[GameCenterManager sharedManager] localPlayerId]];
@@ -352,7 +352,23 @@ - (void)saveAndReportScore:(int)score leaderboard:(NSString *)identifier {
     }
 
     int savedHighScoreValue = [savedHighScore intValue];
-    if (score > savedHighScoreValue) {
+
+    // Determine if the new score is better than the old score
+    BOOL isScoreBetter = NO;
+    switch (order) {
+        case GameCenterSortOrderLowToHigh: // A lower score is better
+            if (score < savedHighScoreValue) {
+                isScoreBetter = YES;
+            }
+            break;
+        default:
+            if (score > savedHighScoreValue) { // A higher score is better
+                isScoreBetter = YES;
+            }
+            break;
+    }
+
+    if (isScoreBetter) {
         [playerDict setObject:[NSNumber numberWithInt:score] forKey:identifier];
         [plistDict setObject:playerDict forKey:[[GameCenterManager sharedManager] localPlayerId]];
         NSData *saveData = [[NSKeyedArchiver archivedDataWithRootObject:plistDict] encryptedWithKey:kGameCenterManagerKey];
@@ -480,7 +496,7 @@ - (void)saveAchievementToReportLater:(NSString *)identifier percentComplete:(dou
         }
     } else {
         NSMutableDictionary *savedAchievements = [NSMutableDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithDouble:percentComplete], identifier, nil];
-        playerDict = [NSMutableDictionary dictionaryWithObjectsAndKeys:savedAchievements, @"SavedAchievements", nil];                    
+        playerDict = [NSMutableDictionary dictionaryWithObjectsAndKeys:savedAchievements, @"SavedAchievements", nil];
     }
     [plistDict setObject:playerDict forKey:[[GameCenterManager sharedManager] localPlayerId]];
     NSData *saveData = [[NSKeyedArchiver archivedDataWithRootObject:plistDict] encryptedWithKey:kGameCenterManagerKey];