[iagno] Add --first, --second and --two-players command-line options.

[Michael Catanzaro <mcatanzaro src gnome org>]

commit fd02c26d1d45b98ad97f8eedc66b5909e18b2bb3
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Sun Jul 20 22:16:12 2014 +0200

    Add --first, --second and --two-players command-line options.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=733415

 src/iagno.vala |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)
---
diff --git a/src/iagno.vala b/src/iagno.vala
index 31872b1..4f88059 100644
--- a/src/iagno.vala
+++ b/src/iagno.vala
@@ -45,8 +45,11 @@ public class Iagno : Gtk.Application
     private static const OptionEntry[] option_entries =
     {
         { "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"), 
null},
         { "mute", 0, 0, OptionArg.NONE, null, N_("Turn off the sound"), null},
+        { "second", 0, 0, OptionArg.NONE, null, N_("Play second"), null},
+        { "two-players", 0, 0, OptionArg.NONE, null, N_("Two-players mode"), null},
         { "unmute", 0, 0, OptionArg.NONE, null, N_("Turn on the sound"), null},
         { "version", 'v', 0, OptionArg.NONE, null, N_("Print release version and exit"), null},
         { null }
@@ -205,6 +208,14 @@ public class Iagno : Gtk.Application
                 stderr.printf ("%1$s\n", _("Level should be between 1 (easy) and 3 (hard). Settings 
unchanged."));
         }
 
+        /* The game mode is set for the next game. */
+        if (options.contains ("second"))
+            settings.set_string ("play-as", "second");
+        if (options.contains ("first"))
+            settings.set_string ("play-as", "first");
+        if (options.contains ("two-players"))
+            settings.set_string ("play-as", "two-players");
+
         /* Activate */
         return -1;
     }