#pragma once #include "TileBehaviorStrategy.h" class NullTileBehavior : public TileBehaviorStrategy { public: virtual void update(Tile &); virtual std::unique_ptr clone(Museum &); static constexpr const char * type = ""; private: using TileBehaviorStrategy::TileBehaviorStrategy; static NullTileBehavior instance; NullTileBehavior() = default; };