fix more design

1 files changed, 3 insertions, 6 deletions

diff --git a/StepTileBehavior.h b/StepTileBehavior.h
index d044fe7..856760f 100644
--- a/StepTileBehavior.h
+++ b/StepTileBehavior.h
@@ -3,15 +3,12 @@
 #include "TileBehavior.h"
 
 class StepTileBehavior : public TileBehavior {
+	friend class TileBehaviorFactory;
+	using TileBehavior::TileBehavior;
+
 public:
 	virtual void update(Tile &);
-	virtual std::unique_ptr<TileBehavior> clone(Museum &);
 
 	static constexpr const char * type = "G";
-
-private:
-	using TileBehavior::TileBehavior;
-	static StepTileBehavior instance;
-	StepTileBehavior() = default;
 };