working on campaign

src/GameState.cpp

@@ -36,6 +36,7 @@ void GameState::save(nlohmann::json& out) const
     out["savedAt"] = ts.str();
 
     // --- World ---
+    out["campaignId"]  = campaignId;
 	out["currentLocationName"] = currentLocationName;
     out["isDarklands"] = isDarklands;
     out["isNight"]     = isNight;
@@ -104,6 +105,8 @@ void GameState::load(const nlohmann::json& in)
     //logger() << "GameState::load step 1" << std::endl;
 
     // --- World ---
+    // Literal default: saves made before campaigns existed belong to the main game.
+    campaignId = in.value("campaignId", std::string("main"));
     currentLocationName = in.value("currentLocationName", currentLocationName);
     isDarklands = in.value("isDarklands", isDarklands);
     isNight     = in.value("isNight",     isNight);