diff --git a/sdlpp/sdlpp_renderobject.hpp b/sdlpp/sdlpp_renderobject.hpp
index a2208fe..abe7365 100644
--- a/sdlpp/sdlpp_renderobject.hpp
+++ b/sdlpp/sdlpp_renderobject.hpp
@@ -49,6 +49,12 @@ public:
                                             collisionWidth(), collisionHeight(),
                                             getId() );
     }
+    template < class T > void addCollision( const std::shared_ptr< T > &p ) {
+        collisions.push_back( p );
+        collisions.back()->updateCollision( collisionPushX(), collisionPushY(),
+                                            collisionWidth(), collisionHeight(),
+                                            getId() );
+    }
     bool hasCollisions() const;
     const std::vector< std::shared_ptr< CollisionPolygon > > &
     getCollisions() const;