Add basic tweening mouse cursor.

# Conflicts:
#	osu-framework

osu.Game/Graphics/Cursor/OsuCursorContainer.cs

@@ -0,0 +1,53 @@
+//Copyright (c) 2007-2016 ppy Pty Ltd <contact@ppy.sh>.
+//Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Cursor;
+using osu.Framework.Graphics.Sprites;
+using osu.Framework.Graphics.Transformations;
+using osu.Framework.Input;
+
+namespace osu.Game.Graphics.Cursor
+{
+    class OsuCursorContainer : CursorContainer
+    {
+        protected override Drawable CreateCursor() => new OsuCursor();
+
+        protected override bool OnMouseDown(InputState state, MouseDownEventArgs args)
+        {
+            ActiveCursor.Scale = new OpenTK.Vector2(1);
+            ActiveCursor.ScaleTo(1.2f, 100, EasingTypes.OutQuad);
+            return base.OnMouseDown(state, args);
+        }
+
+        protected override bool OnMouseUp(InputState state, MouseUpEventArgs args)
+        {
+            if (!state.Mouse.HasMainButtonPressed)
+                ActiveCursor.ScaleTo(1, 200, EasingTypes.OutQuad);
+            return base.OnMouseUp(state, args);
+        }
+
+        class OsuCursor : AutoSizeContainer
+        {
+            public OsuCursor()
+            {
+                Origin = Anchor.Centre;
+            }
+
+            public override void Load()
+            {
+                base.Load();
+
+                Children = new Drawable[]
+                {
+                    new Sprite
+                    {
+                        Texture = Game.Textures.Get(@"Cursor/cursor")
+                    }
+                };
+            }
+        }
+    }
+
+}

osu.Game/OsuGameBase.cs

@@ -4,6 +4,7 @@ using osu.Framework.Graphics.Cursor;
 using osu.Framework.Graphics.Textures;
 using osu.Framework.IO.Stores;
 using osu.Game.Configuration;
+using osu.Game.Graphics.Cursor;
 using osu.Game.Graphics.Processing;
 using osu.Game.Online.API;
 
@@ -44,7 +45,7 @@ namespace osu.Game
                 {
                     Children = new Drawable[]
                     {
-                        new CursorContainer()
+                        new OsuCursorContainer()
                     }
                 }
             });

osu.Game/osu.Game.csproj

@@ -51,6 +51,7 @@
     <Compile Include="Graphics\Containers\OsuComponent.cs" />
     <Compile Include="Graphics\Containers\OsuGameMode.cs" />
     <Compile Include="Graphics\Containers\OsuLargeComponent.cs" />
+    <Compile Include="Graphics\Cursor\OsuCursorContainer.cs" />
     <Compile Include="Graphics\Processing\RatioAdjust.cs" />
     <Compile Include="Graphics\TextAwesome.cs" />
     <Compile Include="Graphics\UserInterface\KeyCounter.cs" />