[iagno] Slow down the game

[Michael Catanzaro <mcatanzaro src gnome org>]

commit d39ba1dfe4c24cf071136f16db2ec4e0b7d5321b
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Mon Oct 14 22:14:47 2013 -0500

    Slow down the game
    
    Give the player a breather after each move, so he has a chance to think.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=710122

 src/computer-player.vala |    2 +-
 src/iagno.vala           |   22 +++++++++++++++-------
 2 files changed, 16 insertions(+), 8 deletions(-)
---
diff --git a/src/computer-player.vala b/src/computer-player.vala
index 61ed277..a7ca0b4 100644
--- a/src/computer-player.vala
+++ b/src/computer-player.vala
@@ -35,7 +35,7 @@ public class ComputerPlayer : Object
     private Game game;
 
     /* Strength */
-    private int level;
+    public int level { get; private set; }
 
     /* Value of owning each location */
     private static const int[] heuristic =
diff --git a/src/iagno.vala b/src/iagno.vala
index 386990f..c6c6aeb 100644
--- a/src/iagno.vala
+++ b/src/iagno.vala
@@ -234,7 +234,10 @@ public class Iagno : Gtk.Application
 
         update_ui ();
 
-        /* Get the computer to move after a delay (so it looks like it's thinking) */
+        /*
+         * Get the computer to move after a delay (so it looks like it's
+         * thinking - but only a short delay for the first move)
+         */
         if (dark_computer != null)
             computer_timer = Timeout.add (1000, computer_move_cb);
     }
@@ -359,12 +362,17 @@ public class Iagno : Gtk.Application
 
         update_ui ();
 
-        /* Get the computer to move after a delay (so it looks like it's thinking) */
-        if ((game.current_color == Player.LIGHT && light_computer != null) ||
-            (game.current_color == Player.DARK && dark_computer != null))
-        {
-            computer_timer = Timeout.add (1000, computer_move_cb);
-        }
+        /*
+         * Get the computer to move after a delay, so it looks like it's
+         * thinking. Make it fairly long so the human doesn't feel overwhelmed,
+         * but not so long as to become boring. Also, attempt to play faster at
+         * higher difficulties. (In actuality, Hard will take longer anyway
+         * since it must search deeper, but this compensates somewhat.)
+         */
+        if (game.current_color == Player.LIGHT && light_computer != null)
+            computer_timer = Timeout.add_seconds (5 - light_computer.level, computer_move_cb);
+        else if (game.current_color == Player.DARK && dark_computer != null)
+            computer_timer = Timeout.add_seconds (5 - dark_computer.level, computer_move_cb);
     }
 
     private bool computer_move_cb ()