void write(lisp::Writer& writer);
HitResponse collision_solid(GameObject& other, const CollisionHit& hit);
HitResponse collision_badguy(BadGuy& badguy, const CollisionHit& hit);
void write(lisp::Writer& writer);
HitResponse collision_solid(GameObject& other, const CollisionHit& hit);
HitResponse collision_badguy(BadGuy& badguy, const CollisionHit& hit);