[iagno] Calculate depth a simpler way.

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 9d580a2ab25684410421ce545db22dc73a2f4d60
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Sun Aug 31 00:36:29 2014 +0200

    Calculate depth a simpler way.
    
    Complicated things are complicated.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=708179

 src/computer-player.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/computer-player.vala b/src/computer-player.vala
index e817bf1..0e1b885 100644
--- a/src/computer-player.vala
+++ b/src/computer-player.vala
@@ -73,7 +73,7 @@ public class ComputerPlayer : Object
             return;
         }
 
-        var depth = 7 - (3 - level) * 2;
+        var depth = level * 2 + 1;
         var tiles_remaining = 64 - game.n_tiles;
 
         /* Choose a strategy based on how close to the end we are.