implement mementos snapshots

1 files changed, 11 insertions, 0 deletions

diff --git a/TileData.h b/TileData.h
index 87d9003..314466c 100644
--- a/TileData.h
+++ b/TileData.h
@@ -2,9 +2,20 @@
 
 #include <string>
 
+#include "Memento.h"
+
 struct TileData {
 	unsigned int x = 0;
 	unsigned int y = 0;
 	std::string type = "";
 };
 
+class TileDataMemento : public Memento {
+	friend class Canvas;
+
+public:
+	TileDataMemento(const TileData & data) : data(data) {}
+private:
+	TileData data;
+};
+