fix more design

1 files changed, 3 insertions, 6 deletions

diff --git a/DeleteArtistTileBehavior.h b/DeleteArtistTileBehavior.h
index 0b2b0d4..9454864 100644
--- a/DeleteArtistTileBehavior.h
+++ b/DeleteArtistTileBehavior.h
@@ -3,17 +3,14 @@
 #include "TileBehavior.h"
 
 class DeleteArtistTileBehavior : public TileBehavior {
+	friend class TileBehaviorFactory;
+	using TileBehavior::TileBehavior;
+
 public:
 	virtual void step(Artist *);
 	virtual void update(Tile &);
-	virtual std::unique_ptr<TileBehavior> clone(Museum &);
 
 	static constexpr const char * type = "R";
-
-private:
-	using TileBehavior::TileBehavior;
-	static DeleteArtistTileBehavior instance;
-	DeleteArtistTileBehavior() = default;
 };