Mode -> Ruleset.

osu.Game.Rulesets.Osu/Objects/OsuHitObject.cs

@@ -0,0 +1,78 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Game.Rulesets.Objects;
+using OpenTK;
+using osu.Game.Rulesets.Osu.Objects.Drawables;
+using osu.Game.Rulesets.Objects.Types;
+using OpenTK.Graphics;
+using osu.Game.Beatmaps.Timing;
+using osu.Game.Database;
+
+namespace osu.Game.Rulesets.Osu.Objects
+{
+    public abstract class OsuHitObject : HitObject, IHasCombo, IHasPosition
+    {
+        public const double OBJECT_RADIUS = 64;
+
+        private const double hittable_range = 300;
+        private const double hit_window_50 = 150;
+        private const double hit_window_100 = 80;
+        private const double hit_window_300 = 30;
+
+        public Vector2 Position { get; set; }
+        public float X => Position.X;
+        public float Y => Position.Y;
+
+        public Vector2 StackedPosition => Position + StackOffset;
+
+        public virtual Vector2 EndPosition => Position;
+
+        public Vector2 StackedEndPosition => EndPosition + StackOffset;
+
+        public virtual int StackHeight { get; set; }
+
+        public Vector2 StackOffset => new Vector2(StackHeight * Scale * -6.4f);
+
+        public double Radius => OBJECT_RADIUS * Scale;
+
+        public float Scale { get; set; } = 1;
+
+        public Color4 ComboColour { get; set; } = Color4.Gray;
+        public virtual bool NewCombo { get; set; }
+        public int ComboIndex { get; set; }
+
+        public double HitWindowFor(OsuScoreResult result)
+        {
+            switch (result)
+            {
+                default:
+                    return 300;
+                case OsuScoreResult.Hit50:
+                    return 150;
+                case OsuScoreResult.Hit100:
+                    return 80;
+                case OsuScoreResult.Hit300:
+                    return 30;
+            }
+        }
+
+        public OsuScoreResult ScoreResultForOffset(double offset)
+        {
+            if (offset < HitWindowFor(OsuScoreResult.Hit300))
+                return OsuScoreResult.Hit300;
+            if (offset < HitWindowFor(OsuScoreResult.Hit100))
+                return OsuScoreResult.Hit100;
+            if (offset < HitWindowFor(OsuScoreResult.Hit50))
+                return OsuScoreResult.Hit50;
+            return OsuScoreResult.Miss;
+        }
+
+        public override void ApplyDefaults(TimingInfo timing, BeatmapDifficulty difficulty)
+        {
+            base.ApplyDefaults(timing, difficulty);
+
+            Scale = (1.0f - 0.7f * (difficulty.CircleSize - 5) / 5) / 2;
+        }
+    }
+}