添加对 Core 的直接引用

RhythmBaseCore/Components/Bookmark.cs

@@ -0,0 +1,47 @@
+namespace RhythmBase.Components
+{
+	/// <summary>
+	/// Represents a bookmark in the rhythm base.
+	/// </summary>
+	public class Bookmark
+	{
+		/// <summary>
+		/// Gets or sets the beat where the bookmark is located.
+		/// </summary>
+		public RDBeat Beat { get; set; }
+
+		/// <summary>
+		/// Gets or sets the color of the bookmark.
+		/// </summary>
+		public BookmarkColors Color { get; set; }
+
+		/// <summary>
+		/// Returns a string that represents the current bookmark.
+		/// </summary>
+		/// <returns>A string that represents the current bookmark.</returns>
+		public override string ToString() => string.Format("{0}, {1}", Beat, Color);
+
+		/// <summary>
+		/// Specifies the colors available for bookmarks.
+		/// </summary>
+		public enum BookmarkColors
+		{
+			/// <summary>
+			/// Represents the color blue.
+			/// </summary>
+			Blue,
+			/// <summary>
+			/// Represents the color red.
+			/// </summary>
+			Red,
+			/// <summary>
+			/// Represents the color yellow.
+			/// </summary>
+			Yellow,
+			/// <summary>
+			/// Represents the color green.
+			/// </summary>
+			Green
+		}
+	}
+}