Only save if storage is in use

lordmauve · May 7, 2019 · d5c01bd · d5c01bd
1 parent b617ee0
commit d5c01bd
Show file tree

Hide file tree

Showing 2 changed files with 6 additions and 0 deletions.
diff --git a/doc/changelog.rst b/doc/changelog.rst
@@ -9,6 +9,8 @@ Changelog
 * New: screen.fill() now takes ``gcolor``, creating a vertical-linear gradient
 * New: a :doc:`REPL <repl>` has been added, which allows exploring a game's
   state while it is running.
+* New: Added a :ref:`storage API <data-storage>`, which preserves data across
+  game runs.
 
 
 1.2 - 2018-02-24

diff --git a/pgzero/storage.py b/pgzero/storage.py
@@ -49,6 +49,7 @@ class Storage(dict):
 
     def __init__(self, filename=None):
         super().__init__()
+        self.loaded = False
         self._save_file = filename
         self.storages.append(self)
 
@@ -113,9 +114,12 @@ def load(self):
             )
         else:
             self.update(data)
+            self.loaded = True
 
     def save(self):
         """Save data to disk."""
+        if not self and not self.loaded:
+            return
         try:
             data = json.dumps(self)
         except TypeError: