[gnome-2048] Make new-tile animation faster.

[Arnaud B. <arnaudb src gnome org>]

commit b3407d36ac653b1ebad3f5a4699206cb03760df2
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Fri Feb 1 17:45:15 2019 +0100

    Make new-tile animation faster.
    
    The new-tile animation is taking
    the same time than the move one.
    This feels a bit long, and sadly
    blocks every move requests until
    it is finished. Fixing that will
    be hard, so for now just make it
    twice as fast as it was. See #7.

 src/game.vala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/game.vala b/src/game.vala
index 1226563..ebe8f0d 100644
--- a/src/game.vala
+++ b/src/game.vala
@@ -531,7 +531,7 @@ private class Game : Object
     {
         _show_hide_trans = new Clutter.TransitionGroup ();
         _show_hide_trans.stopped.connect (_on_show_hide_trans_stopped);
-        _show_hide_trans.set_duration (animate ? _animations_duration : 10);
+        _show_hide_trans.set_duration (animate ? _animations_duration / 2 : 10);
     }
 
     private void _on_show_hide_trans_stopped (bool is_finished)