Merge pull request #5435 from peppy/system-mode-type

Move TouchDevice mod to "system" type

osu.Game.Rulesets.Osu/Mods/OsuModTouchDevice.cs

@@ -11,6 +11,8 @@ namespace osu.Game.Rulesets.Osu.Mods
         public override string Acronym => "TD";
         public override double ScoreMultiplier => 1;
 
+        public override ModType Type => ModType.System;
+
         public override bool Ranked => true;
     }
 }

osu.Game.Rulesets.Osu/OsuRuleset.cs

@@ -138,6 +138,12 @@ namespace osu.Game.Rulesets.Osu
                         new MultiMod(new ModWindUp<OsuHitObject>(), new ModWindDown<OsuHitObject>()),
                     };
 
+                case ModType.System:
+                    return new Mod[]
+                    {
+                        new OsuModTouchDevice(),
+                    };
+
                 default:
                     return new Mod[] { };
             }

osu.Game/Rulesets/Mods/ModType.cs

@@ -9,6 +9,7 @@ namespace osu.Game.Rulesets.Mods
         DifficultyIncrease,
         Conversion,
         Automation,
-        Fun
+        Fun,
+        System
     }
 }