Rework hitobject blueprints to take in hitobject models

osu.Game/Rulesets/Edit/HitObjectSelectionBlueprint.cs

@@ -0,0 +1,48 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Graphics.Primitives;
+using osu.Game.Graphics.UserInterface;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Drawables;
+using osuTK;
+
+namespace osu.Game.Rulesets.Edit
+{
+    public abstract class HitObjectSelectionBlueprint : SelectionBlueprint<HitObject>
+    {
+        /// <summary>
+        /// The <see cref="DrawableHitObject"/> which this <see cref="HitObjectSelectionBlueprint"/> applies to.
+        /// </summary>
+        public DrawableHitObject DrawableObject { get; internal set; }
+
+        /// <summary>
+        /// Whether the blueprint should be shown even when the <see cref="DrawableObject"/> is not alive.
+        /// </summary>
+        protected virtual bool AlwaysShowWhenSelected => false;
+
+        protected override bool ShouldBeAlive => (DrawableObject.IsAlive && DrawableObject.IsPresent) || (AlwaysShowWhenSelected && State == SelectionState.Selected);
+
+        protected HitObjectSelectionBlueprint(HitObject hitObject)
+            : base(hitObject)
+        {
+        }
+
+        public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) => DrawableObject.ReceivePositionalInputAt(screenSpacePos);
+
+        public override Vector2 ScreenSpaceSelectionPoint => DrawableObject.ScreenSpaceDrawQuad.Centre;
+
+        public override Quad SelectionQuad => DrawableObject.ScreenSpaceDrawQuad;
+    }
+
+    public abstract class HitObjectSelectionBlueprint<T> : HitObjectSelectionBlueprint
+        where T : HitObject
+    {
+        public T HitObject => (T)Item;
+
+        protected HitObjectSelectionBlueprint(T item)
+            : base(item)
+        {
+        }
+    }
+}