Move play modes to their own projects.

osu.Game/Modes/UI/ComboResultCounter.cs

@@ -0,0 +1,58 @@
+//Copyright (c) 2007-2016 ppy Pty Ltd <contact@ppy.sh>.
+//Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Transformations;
+using osu.Framework.MathUtils;
+using osu.Game.Graphics.UserInterface;
+
+namespace osu.Game.Modes.UI
+{
+    /// <summary>
+    /// Used to display combo with a roll-up animation in results screen.
+    /// </summary>
+    public class ComboResultCounter : RollingCounter<ulong>
+    {
+        protected override Type TransformType => typeof(TransformComboResult);
+
+        protected override double RollingDuration => 500;
+        protected override EasingTypes RollingEasing => EasingTypes.Out;
+
+        protected override double GetProportionalDuration(ulong currentValue, ulong newValue)
+        {
+            return currentValue > newValue ? currentValue - newValue : newValue - currentValue;
+        }
+
+        protected override string FormatCount(ulong count)
+        {
+            return $@"{count}x";
+        }
+
+        public override void Increment(ulong amount)
+        {
+            Count = Count + amount;
+        }
+
+        protected class TransformComboResult : Transform<ulong>
+        {
+            protected override ulong CurrentValue
+            {
+                get
+                {
+                    double time = Time?.Current ?? 0;
+                    if (time < StartTime) return StartValue;
+                    if (time >= EndTime) return EndValue;
+
+                    return (ulong)Interpolation.ValueAt(time, StartValue, EndValue, StartTime, EndTime, Easing);
+                }
+            }
+
+            public override void Apply(Drawable d)
+            {
+                base.Apply(d);
+                (d as ComboResultCounter).DisplayedCount = CurrentValue;
+            }
+        }
+    }
+}