[iagno] Add --alternative-start option.

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 09e46aff6201cd64a7343e51995439cae6dbf417
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Wed Oct 1 13:45:00 2014 +0200

    Add --alternative-start option.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=737715

 data/iagno.6   |    3 +++
 src/game.vala  |   14 +++++++-------
 src/iagno.vala |    4 +++-
 3 files changed, 13 insertions(+), 8 deletions(-)
---
diff --git a/data/iagno.6 b/data/iagno.6
index 9d259b3..19912cb 100644
--- a/data/iagno.6
+++ b/data/iagno.6
@@ -28,6 +28,9 @@ This is done by trapping your opponent's tiles between two tiles of
 your own color.
 .SH OPTIONS
 .TP
+.B \-\-alternative\-start
+Start the game with an alternative position.
+.TP
 .B \-f, \-\-fast\-moves
 Play with reduced delay before the computer moves.
 .PP
diff --git a/src/game.vala b/src/game.vala
index 73712eb..c7543d7 100644
--- a/src/game.vala
+++ b/src/game.vala
@@ -87,7 +87,7 @@ public class Game : Object
     * * Creation / exporting
     \*/
 
-    public Game (int tmp_size = 8)
+    public Game (bool alternative_start = false, int tmp_size = 8)
         requires (tmp_size >= 4)
     {
         size = tmp_size;
@@ -105,9 +105,9 @@ public class Game : Object
         {
             /* Setup board with four tiles by default */
             initial_number_of_tiles = 4;
-            tiles [size / 2 - 1, size / 2 - 1] = Player.LIGHT;
+            tiles [size / 2 - 1, size / 2 - 1] = alternative_start ? Player.DARK : Player.LIGHT;
             tiles [size / 2 - 1, size / 2] = Player.DARK;
-            tiles [size / 2, size / 2 - 1] = Player.DARK;
+            tiles [size / 2, size / 2 - 1] = alternative_start ? Player.LIGHT : Player.DARK;
             tiles [size / 2, size / 2] = Player.LIGHT;
             n_current_tiles = 2;
             n_opponent_tiles = 2;
@@ -117,11 +117,11 @@ public class Game : Object
             /* Logical starting position for odd board */
             initial_number_of_tiles = 7;
             tiles [(size - 1) / 2, (size - 1) / 2] = Player.DARK;
-            tiles [(size + 1) / 2, (size - 3) / 2] = Player.DARK;
-            tiles [(size - 3) / 2, (size + 1) / 2] = Player.DARK;
+            tiles [(size + 1) / 2, (size - 3) / 2] = alternative_start ? Player.LIGHT : Player.DARK;
+            tiles [(size - 3) / 2, (size + 1) / 2] = alternative_start ? Player.LIGHT : Player.DARK;
             tiles [(size - 1) / 2, (size - 3) / 2] = Player.LIGHT;
-            tiles [(size - 3) / 2, (size - 1) / 2] = Player.LIGHT;
-            tiles [(size + 1) / 2, (size - 1) / 2] = Player.LIGHT;
+            tiles [(size - 3) / 2, (size - 1) / 2] = alternative_start ? Player.DARK : Player.LIGHT;
+            tiles [(size + 1) / 2, (size - 1) / 2] = alternative_start ? Player.DARK : Player.LIGHT;
             tiles [(size - 1) / 2, (size + 1) / 2] = Player.LIGHT;
             n_current_tiles = 3;
             n_opponent_tiles = 4;
diff --git a/src/iagno.vala b/src/iagno.vala
index 0376fd3..aa14d30 100644
--- a/src/iagno.vala
+++ b/src/iagno.vala
@@ -18,6 +18,7 @@ public class Iagno : Gtk.Application
     private int window_width;
     private int window_height;
     private static bool fast_mode;
+    private static bool alternative_start;
     private static int computer_level = 0;
     private static int size = 8;
     private static bool begin_with_new_game_screen = false;
@@ -57,6 +58,7 @@ public class Iagno : Gtk.Application
 
     private static const OptionEntry[] option_entries =
     {
+        { "alternative-start", 0, 0, OptionArg.NONE, ref alternative_start, N_("Start with an alternative 
position"), null},
         { "fast-mode", 'f', 0, OptionArg.NONE, ref fast_mode, N_("Reduce delay before AI moves"), null},
         { "first", 0, 0, OptionArg.NONE, null, N_("Play first"), null},
         { "level", 'l', 0, OptionArg.INT, ref computer_level, N_("Set the level of the computer's AI"), 
"LEVEL"},
@@ -315,7 +317,7 @@ public class Iagno : Gtk.Application
 
         show_game_board ();
 
-        game = new Game (size);
+        game = new Game (alternative_start, size);
         game.turn_ended.connect (turn_ended_cb);
         view.game = game;
         view.show ();