void activate();
void write(lisp::Writer& writer);
void active_update(float elapsed_time);
void kill_fall();
HitResponse collision_solid(GameObject& other, const CollisionHit& hit);
void activate();
void write(lisp::Writer& writer);
void active_update(float elapsed_time);
void kill_fall();
HitResponse collision_solid(GameObject& other, const CollisionHit& hit);