+ HitResponse collision(GameObject& other, const CollisionHit& hit);
+
+ void grab(MovingObject& object, const Vector& pos, Direction dir);
+ void ungrab(MovingObject& object, Direction dir);
+
+ /**
+ * returns true if lamp is currently open
+ */
+ bool is_open();
+
+ /**
+ * returns the lamp's color
+ */
+ Color get_color() const {
+ return lightcolor;
+ }
+