SKTexture+YWName.h

#import <SpriteKit/SpriteKit.h>

@interface SKTexture (YWName)

@property (nonatomic, strong) NSString *yw_textureName;
@property (nonatomic, strong) NSString *yw_atlasName;

@end

SKTexture+YWName.m

#import "SKTexture+YWName.h"
#import <objc/runtime.h>

static char const * const YWAtlasNameKey;
static char const * const YWTextureNameKey;

@implementation SKTexture (YWName)

-(void)setYw_atlasName:(NSString *)yw_atlasName {
    objc_setAssociatedObject(self, &YWAtlasNameKey, yw_atlasName, OBJC_ASSOCIATION_RETAIN);
}

-(void)setYw_textureName:(NSString *)yw_textureName {
    objc_setAssociatedObject(self, &YWTextureNameKey, yw_textureName, OBJC_ASSOCIATION_RETAIN);
}

-(NSString *)yw_atlasName {
    return objc_getAssociatedObject(self, &YWAtlasNameKey);
}

-(NSString *)yw_textureName {
    return objc_getAssociatedObject(self, &YWTextureNameKey);
}

@end