Saving and loading functions are done

Assets/Scripts/CityGen/CityGen.cs

@@ -58,24 +58,40 @@ public class CityGen : MonoBehaviour {
 
 		}
 
-		void save(){
 
 	}
 
-		void load(){
-			
-		}
-	}
-
 
 	public City city;
+	private string jsonFilePath = "/CityData/data.json";
+
 	// Use this for initialization
 	void Start () {
-		
+		save();
+		load();
 	}
 	
 	// Update is called once per frame
 	void Update () {
 		
 	}
+
+	// Save the data about city.
+	void save (string fileName = "data") {
+		// Covert city ovject to json.
+		string cityDataAsJson = JsonUtility.ToJson(this.city);
+		//print(Application.persistentDataPath + this.jsonFilePath);
+		
+		// Creates a directory in local disk.
+		System.IO.Directory.CreateDirectory(Application.persistentDataPath + "/CityData");
+		// Write all the data to a file.
+		System.IO.File.WriteAllText(Application.persistentDataPath + this.jsonFilePath, cityDataAsJson);
+	}
+
+	// Load the data about city.
+	void load(){
+		string cityDataAsJson = System.IO.File.ReadAllText(Application.persistentDataPath + this.jsonFilePath);
+		city = JsonUtility.FromJson<City>(cityDataAsJson);
+	}
+
 }