添加对 Core 的直接引用

RhythmBaseCore/Components/RDHit.cs

@@ -0,0 +1,51 @@
+using RhythmBase.Events;
+namespace RhythmBase.Components
+{
+	/// <summary>
+	/// Represents the moment a beat is hit in the rhythm game.
+	/// </summary>
+	public struct RDHit
+	{
+		/// <summary>
+		/// Gets the moment of pressing the beat.
+		/// </summary>
+		public RDBeat Beat { get; }
+		/// <summary>
+		/// Gets the length of time the player held the beat.
+		/// </summary>
+		public float Hold { get; }
+		/// <summary>
+		/// Gets the source event for this hit.
+		/// </summary>
+		public BaseBeat Parent { get; }
+		/// <summary>
+		/// Gets a value indicating whether this hit needs to be held down continuously.
+		/// </summary>
+		public readonly bool Holdable
+		{
+			get
+			{
+				return Hold > 0f;
+			}
+		}
+		/// <summary>
+		/// Initializes a new instance of the <see cref="RDHit"/> struct.
+		/// </summary>
+		/// <param name="parent">The source event for this hit.</param>
+		/// <param name="beat">The moment of pressing the beat.</param>
+		/// <param name="hold">The length of time the player held the beat.</param>
+		public RDHit(BaseBeat parent, RDBeat beat, float hold = 0f)
+		{
+			this = default;
+			Parent = parent;
+			Beat = beat;
+			Hold = hold;
+		}
+
+		/// <summary>
+		/// Returns a string that represents the current object.
+		/// </summary>
+		/// <returns>A string that represents the current object.</returns>
+		public override readonly string ToString() => string.Format("{{{0}, {1}}}", Beat, Parent);
+	}
+}