CCSpriteFrameCache: Method added to load all Sprite sheet lookup files in all search paths and merge them in ivar.

Author: NickyWeber

cocos2d/CCSpriteFrameCache.h

@@ -114,6 +114,13 @@
  */
 -(void) loadSpriteFrameLookupDictionaryFromFile:(NSString*)filename;
 
+/**
+ *  Loads all sprite sheet lookup files in all search paths and registers all the referenced sprite sheets with the sprite frame cache.
+ *
+ *  @param filename Sprite sheet lookup file.
+ */
+- (void)loadSpriteFrameLookupsInAllSearchPathsWithName:(NSString *)filename;
+
 /// -----------------------------------------------------------------------
 /// @name Sprite Frame Cache Removal
 /// -----------------------------------------------------------------------

cocos2d/CCSpriteFrameCache.m

@@ -129,6 +129,30 @@ -(void) loadSpriteFrameLookupDictionaryFromFile:(NSString*)filename
 	}
 }
 
+- (void)loadSpriteFrameLookupsInAllSearchPathsWithName:(NSString *)filename
+{
+    NSArray *paths = [[CCFileUtils sharedFileUtils] fullPathsOfFileNameInAllSearchPaths:filename];
+
+    for (NSString *spriteFrameLookupFullPath in paths)
+    {
+        NSDictionary *dict = [NSDictionary dictionaryWithContentsOfFile:spriteFrameLookupFullPath];
+
+        NSDictionary *metadata = dict[@"metadata"];
+        NSInteger version = [metadata[@"version"] integerValue];
+        if (version != 1)
+        {
+            CCLOG(@"cocos2d: ERROR: Invalid filenameLookup dictionary version: %ld. Filename: %@", (long) version, filename);
+            return;
+        }
+
+        NSArray *spriteFrameFiles = dict[@"spriteFrameFiles"];
+        for (NSString *spriteFrameFile in spriteFrameFiles)
+        {
+            [self registerSpriteFramesFile:spriteFrameFile];
+        }
+    }
+}
+
 - (void) registerSpriteFramesFile:(NSString*)plist
 {
 	NSAssert(plist, @"plist filename should not be nil");