Cereal works pretty well so I may use it, but there's one more library I want to try first called tser.

components.hpp

@@ -25,4 +25,16 @@ namespace Components {
   struct Tile {
     std::string chr = "!";
   };
+
+  struct MapConfig {
+    std::string WALL_TILE;
+    std::string FLOOR_TILE;
+    std::string PLAYER_TILE;
+    std::string ENEMY_TILE;
+    std::string BG_TILE;
+  };
+
+  struct EnemyConfig {
+    int HEARING_DISTANCE;
+  };
 }