Tilorswift levels can now be loaded into the running game

js/Level.js

@@ -84,4 +84,15 @@ export default class Level
 
         return level;
     }
-}
+
+    static createFromJson(json)
+    {
+        const data = JSON.parse(json);
+
+        const terrain = Terrain.createFromJson(data);
+        const level = new Level(terrain);
+        level.setGravity(data.gravity);
+
+        return level;
+    }
+}