[gnome-2048] Range target-value.

[Arnaud B. <arnaudb src gnome org>]

commit 66d31dca8be79b5815c22f91173ee67e3397a19b
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Sat Jan 26 10:11:59 2019 +0100

    Range target-value.
    
    Disallow setting unmeaningful values.

 data/org.gnome.2048.gschema.xml | 3 ++-
 src/game.vala                   | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/data/org.gnome.2048.gschema.xml b/data/org.gnome.2048.gschema.xml
index 5c58fc0..2b84e27 100644
--- a/data/org.gnome.2048.gschema.xml
+++ b/data/org.gnome.2048.gschema.xml
@@ -35,8 +35,9 @@
       <!-- Translators: description of a settings key, see 'dconf-editor /org/gnome/2048/cols' -->
       <description>Game grid number of columns.</description>
     </key>
-    <key name="target-value" type="i">
+    <key name="target-value" type="i"> <!-- TODO type="y", only storing the power of 2 -->
       <default>2048</default>
+      <range min="4"/>
       <!-- Translators: summary of a settings key, see 'dconf-editor /org/gnome/2048/target-value' -->
       <summary>Target value</summary>
       <!-- Translators: description of a settings key, see 'dconf-editor /org/gnome/2048/target-value' -->
diff --git a/src/game.vala b/src/game.vala
index da896ad..42e981e 100644
--- a/src/game.vala
+++ b/src/game.vala
@@ -81,7 +81,7 @@ public class Game : Object
 
         _animations_duration = (int)_settings.get_double ("animations-speed");
 
-        _settings.bind ("target-value", _grid, "target_value", GLib.SettingsBindFlags.DEFAULT);
+        _settings.bind ("target-value", _grid, "target-value", GLib.SettingsBindFlags.DEFAULT);
 
         _to_move = new Gee.LinkedList<TileMovement?> ();
         _to_hide = new Gee.LinkedList<TileMovement?> ();