Update to sparsetype parsing

src/engine/objects/ItemTemplate.java

@@ -173,9 +173,10 @@ public class ItemTemplate {
 
             JSONObject obj_sparse_json = jsonObject.getJSONObject("obj_sparse_data");
 
-            for (String key : obj_sparse_json.keySet()) {
-                String sparseValue = obj_sparse_json.getString(key);
-                obj_sparse_data.put(key, sparseValue);
+            for (Object key : obj_sparse_json.keySet()) {
+                String sparseType = key.toString();
+                Object sparseValue = obj_sparse_json.get(sparseType);
+                obj_sparse_data.put(sparseType, sparseValue.toString());
             }
 
             // Banes are defined by their sparse data field