cocos2d/cocos2d-iphone — pull request #140 by araker (2012-01-11 00:54:25+00:00)
Title: Issue 1264, flipped tiles can be changed during runtime. 

CCTMXLayer added

-(void) setTileGID:(uint32_t)gid at:(CGPoint)pos withFlags:(BOOL) flags;
-(uint32_t) tileGIDAt:(CGPoint)pos withFlags:(BOOL) flags;