[gnome-nibbles/wip/vala] Stop countdown if new game button is pressed

[Iulian Radu <iulianradu src gnome org>]

commit aba26fd9400ee774c43785fa5c2ff593186d16a2
Author: Iulian Radu <iulian radu67 gmail com>
Date:   Tue Aug 11 15:45:18 2015 +0300

    Stop countdown if new game button is pressed

 src/gnome-nibbles.vala |    9 ++++++++-
 src/nibbles-game.vala  |    3 +++
 src/worm.vala          |    2 ++
 3 files changed, 13 insertions(+), 1 deletions(-)
---
diff --git a/src/gnome-nibbles.vala b/src/gnome-nibbles.vala
index f3a1faa..2a85713 100644
--- a/src/gnome-nibbles.vala
+++ b/src/gnome-nibbles.vala
@@ -52,6 +52,7 @@ public class Nibbles : Gtk.Application
     private NibblesGame? game = null;
 
     private const int COUNTDOWN_TIME = 3;
+    private uint countdown_id = 0;
 
     private const ActionEntry action_entries[] =
     {
@@ -290,7 +291,7 @@ public class Nibbles : Gtk.Application
 
         var seconds = COUNTDOWN_TIME;
         view.name_labels.show ();
-        Timeout.add (1000, () => {
+        countdown_id = Timeout.add (1000, () => {
             countdown.set_label (seconds.to_string ());
             if (seconds == 0)
             {
@@ -329,6 +330,12 @@ public class Nibbles : Gtk.Application
 
     private void show_new_game_screen_cb ()
     {
+        if (countdown_id != 0)
+        {
+            Source.remove (countdown_id);
+            countdown_id = 0;
+        }
+
         if (game.is_running)
             game.stop ();
 
diff --git a/src/nibbles-game.vala b/src/nibbles-game.vala
index 15f580a..13dd8ba 100644
--- a/src/nibbles-game.vala
+++ b/src/nibbles-game.vala
@@ -245,6 +245,9 @@ public class NibblesGame : Object
             if (worm.is_stopped)
                 continue;
 
+            if (worm.list.is_empty)
+                continue;
+
             foreach (var other_worm in worms)
             {
                 if (worm.will_collide_with_head (other_worm)
diff --git a/src/worm.vala b/src/worm.vala
index 0fba877..5f9b375 100644
--- a/src/worm.vala
+++ b/src/worm.vala
@@ -231,6 +231,8 @@ public class Worm : Object
 
         list.clear ();
         list.add (starting_position);
+        added ();
+
         direction = starting_direction;
         change = 0;
         spawn (walls);