wip

osu.Game/Graphics/UserInterface/SimpleComboCounter.cs

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+// 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;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Transforms;
+using osu.Framework.MathUtils;
+
+namespace osu.Game.Graphics.UserInterface
+{
+    /// <summary>
+    /// Used as an accuracy counter. Represented visually as a percentage.
+    /// </summary>
+    public class SimpleComboCounter : RollingCounter<int>
+    {
+        protected override Type TransformType => typeof(TransformCount);
+
+        protected override double RollingDuration => 750;
+
+        public SimpleComboCounter()
+        {
+            Current.Value = DisplayedCount = 0;
+        }
+
+        protected override string FormatCount(int count)
+        {
+            return $@"{count}x";
+        }
+
+        protected override double GetProportionalDuration(int currentValue, int newValue)
+        {
+            return Math.Abs(currentValue - newValue) * RollingDuration * 100.0f;
+        }
+
+        public override void Increment(int amount)
+        {
+            Current.Value = Current + amount;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(OsuColour colours)
+        {
+            DisplayedCountSpriteText.Colour = colours.BlueLighter;
+        }
+
+        protected class TransformCount : Transform<int>
+        {
+            public override int CurrentValue
+            {
+                get
+                {
+                    double time = Time?.Current ?? 0;
+                    if (time < StartTime) return StartValue;
+                    if (time >= EndTime) return EndValue;
+
+                    return (int)Interpolation.ValueAt(time, StartValue, EndValue, StartTime, EndTime, Easing);
+                }
+            }
+
+            public override void Apply(Drawable d)
+            {
+                base.Apply(d);
+                ((SimpleComboCounter)d).DisplayedCount = CurrentValue;
+            }
+        }
+    }
+}