Add mania bindings.

osu.Game.Rulesets.Mania/ManiaInputManager.cs

@@ -1,6 +1,7 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using System.ComponentModel;
 using osu.Framework.Input.Bindings;
 using osu.Game.Rulesets.UI;
 
@@ -8,14 +9,33 @@ namespace osu.Game.Rulesets.Mania
 {
     public class ManiaInputManager : RulesetInputManager<ManiaAction>
     {
-        public ManiaInputManager(RulesetInfo ruleset)
+        public ManiaInputManager(RulesetInfo ruleset, int variant)
-            : base(ruleset, 0, SimultaneousBindingMode.Unique)
+            : base(ruleset, variant, SimultaneousBindingMode.Unique)
         {
         }
     }
 
     public enum ManiaAction
     {
-        // placeholder
+        [Description("Key 1")]
+        Key1,
+        [Description("Key 2")]
+        Key2,
+        [Description("Key 3")]
+        Key3,
+        [Description("Key 4")]
+        Key4,
+        [Description("Key 5")]
+        Key5,
+        [Description("Key 6")]
+        Key6,
+        [Description("Key 7")]
+        Key7,
+        [Description("Key 8")]
+        Key8,
+        [Description("Key 9")]
+        Key9,
+        [Description("Special")]
+        Special
     }
 }

osu.Game.Rulesets.Mania/ManiaRuleset.cs

@@ -8,6 +8,7 @@ using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.UI;
 using System.Collections.Generic;
 using osu.Framework.Graphics;
+using osu.Framework.Input.Bindings;
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Mania.Scoring;
 using osu.Game.Rulesets.Scoring;
@@ -120,5 +121,41 @@ namespace osu.Game.Rulesets.Mania
             : base(rulesetInfo)
         {
         }
+
+        public override IEnumerable<int> AvailableVariants => new[] { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
+
+        public override IEnumerable<KeyBinding> GetDefaultKeyBindings(int variant = 0)
+        {
+            var leftKeys = new[]
+            {
+                InputKey.A,
+                InputKey.S,
+                InputKey.D,
+                InputKey.F
+            };
+
+            var rightKeys = new[]
+            {
+                InputKey.J,
+                InputKey.K,
+                InputKey.L,
+                InputKey.Semicolon
+            };
+
+            ManiaAction currentKey = ManiaAction.Key1;
+
+            var bindings = new List<KeyBinding>();
+
+            for (int i = 0; i < variant / 2; i++)
+                bindings.Add(new KeyBinding(leftKeys[leftKeys.Length - 1 - i], currentKey++));
+
+            for (int i = 0; i < variant / 2; i++)
+                bindings.Add(new KeyBinding(rightKeys[i], currentKey++));
+
+            if (variant % 2 == 1)
+                bindings.Add(new KeyBinding(InputKey.Space, ManiaAction.Special));
+
+            return bindings;
+        }
     }
 }

osu.Game.Rulesets.Mania/UI/ManiaRulesetContainer.cs

@@ -85,7 +85,7 @@ namespace osu.Game.Rulesets.Mania.UI
 
         public override ScoreProcessor CreateScoreProcessor() => new ManiaScoreProcessor(this);
 
-        public override PassThroughInputManager CreateInputManager() => new ManiaInputManager(Ruleset.RulesetInfo);
+        public override PassThroughInputManager CreateInputManager() => new ManiaInputManager(Ruleset.RulesetInfo, availableColumns);
 
         protected override BeatmapConverter<ManiaHitObject> CreateBeatmapConverter()
         {