添加对 Core 的直接引用

RhythmBaseCore/Components/Condition.cs

@@ -0,0 +1,56 @@
+using Microsoft.VisualBasic.CompilerServices;
+using RhythmBase.Exceptions;
+using System.Text.RegularExpressions;
+namespace RhythmBase.Components
+{
+	/// <summary>
+	/// The conditions of the event.
+	/// </summary>
+	public class Condition
+	{
+		/// <summary>
+		/// Condition list.
+		/// </summary>
+		public List<(bool Enabled, BaseConditional Conditional)> ConditionLists;
+
+		/// <summary>
+		/// The time of effectiveness of the condition.
+		/// </summary>
+		public float Duration { get; set; }
+
+		/// <summary>
+		/// Initializes a new instance of the <see cref="Condition"/> class.
+		/// </summary>
+		public Condition()
+		{
+			ConditionLists = [];
+		}
+
+		/// <summary>
+		/// Loads a condition from a string.
+		/// </summary>
+		/// <param name="text">The text to load the condition from.</param>
+		/// <returns>A new instance of the <see cref="Condition"/> class.</returns>
+		/// <exception cref="RhythmBaseException">Thrown when the condition is illegal.</exception>
+		internal static Condition Load(string text)
+		{
+			Condition @out = new();
+			MatchCollection Matches = Regex.Matches(text, "(~?\\d+)(?=[&d])");
+			if (Matches.Count > 0)
+			{
+				@out.Duration = float.Parse(Regex.Match(text, "[\\d\\.]").Value);
+				return @out;
+			}
+			throw new RhythmBaseException(string.Format("Illegal condition: {0}.", text));
+		}
+
+		/// <summary>
+		/// Converts conditions to a string.
+		/// </summary>
+		/// <returns>A string in the format supported by RDLevel.</returns>
+		public string Serialize() => $"{string.Join("&", ConditionLists.Select((i) => (i.Enabled ? "" : "~") + i.Conditional.Id.ToString()))}d{Duration}";
+
+		/// <inheritdoc/>
+		public override string ToString() => Serialize();
+	}
+}