Save and restore state of the game

Ability to 'save' (when the user closes the Activity) and 'restore' (when the
user launch it from the Journal or the Home without holding Alt) the state of
the game.

For this ability I had to upgrade 'olpcgames' to 1.6 because
'olpcgames.FILE_READ_REQUEST' and 'olpcgames.FILE_WRITE_REQUEST' events are
added in that version and those events are needed for this.

The data is saved (as JSON, with json module) in the 'event.metadata["state"]' and the timestamp state is saved in 'event.filename'.

This commit solves ticket #2393:
 * http://bugs.sugarlabs.org/ticket/2393

Signed-off-by: Manuel Kaufmann <humitos@gmail.com>
Signed-off-by: Rafael Ortiz <rafael@activitycentral.com>

1 files changed, 10 insertions, 2 deletions

diff --git a/olpcgames/video.py b/olpcgames/video.py
index 0cf9ac9..032aa13 100644
--- a/olpcgames/video.py
+++ b/olpcgames/video.py
@@ -1,11 +1,18 @@
-"""Video widget for displaying a gstreamer pipe"""
+"""Video widget for displaying a gstreamer pipe
+
+Note: currently this module is not all that elegant or useful,
+we need a better recipe for using and working with Video 
+under OLPCGames.
+"""
 import logging
 log = logging.getLogger( 'olpcgames.video' )
 #log.setLevel( logging.INFO )
 import os
 import signal
 import pygame
+import weakref
 import olpcgames
+from olpcgames import _gtkmain
 
 import pygtk
 pygtk.require('2.0')
@@ -79,6 +86,7 @@ class PygameWidget( object ):
             window_id = int(os.environ['SDL_WINDOWID'])
         self.window_id = window_id
         self._imagesink = None 
+        #self._holder = _gtkmain.Holder()
     def set_sink( self, sink ):
         """Set up our gst sink"""
         log.info( 'Setting sink: %s', sink )
@@ -149,7 +157,7 @@ if __name__ == "__main__":
         display.flip()
         
         pgw = PygameWidget( )
-        p = Player( pgw )
+        p = Player( pgw, pipe_desc=Player.test_pipe_desc )
         p.play()
         
         clock = pygame.time.Clock()