quick fix for errant interface usage.
quick fix for errant interface usage.

zmaruo/CocosSharp,MSylvia/CocosSharp,TukekeSoft/CocosSharp,TukekeSoft/CocosSharp,hig-ag/CocosSharp,mono/cocos2d-xna,netonjm/CocosSharp,mono/cocos2d-xna,zmaruo/CocosSharp,netonjm/CocosSharp,haithemaraissia/CocosSharp,hig-ag/CocosSharp,mono/CocosSharp,mono/CocosSharp,haithemaraissia/CocosSharp,MSylvia/CocosSharp