[Sugar-devel] PATCH: add a delete all function to physics

[Bernie Innocenti]

Hello Gary,

today I had a great dinner at Mel's aunts and after dinner Mel's cousin
and I hacked together this new feature for Physics.

We tested on a previous version of the activity, but then we upgraded to
the latest version available and -- oops! -- it does not work on x86_64
any more! :-)

So here's what you get for not supporting my architecture. An untested
patch!

--- Physics.activity/tools.py.orig	2009-12-18 22:43:20.779933607 -0500
+++ Physics.activity/tools.py	2009-12-18 22:41:50.680806893 -0500
@@ -458,6 +458,23 @@
                     else:
                         self.game.world.world.DestroyBody(tokill[0])
 
+            # Destroy everything!
+            elif pygame.mouse.get_pressed()[2]:
+
+                # Build a Python list of all bodies from the linked list returned by box2D
+                body = self.game.world.world.GetBodyList()
+                shapes = []
+                while body:
+                    shapes.append(body)
+                    body = body.GetNext()
+
+                # Destroy everything! Muhahahah!
+                for body in shapes:
+                    self.game.world.world.DestroyBody(body)
+
+                # Oops! Restore the ground which we eagerly destroyed :-)
+                self.game.world.add.ground()
+
             elif event.type == MOUSEBUTTONUP and event.button == 1:
                 self.cancel()
     def draw(self):


-- 
   // Bernie Innocenti - http://codewiz.org/
 \X/  Sugar Labs       - http://sugarlabs.org/