Unstable v0.19.5.0

Barotrauma/BarotraumaShared/SharedSource/ContentManagement/ContentPackage/ContentPackageId/ContentPackageId.cs

@@ -0,0 +1,19 @@
+#nullable enable
+
+namespace Barotrauma
+{
+    public abstract class ContentPackageId
+    {
+        public abstract string StringRepresentation { get; }
+
+        public override string ToString()
+            => StringRepresentation;
+
+        public abstract override bool Equals(object? obj);
+
+        public abstract override int GetHashCode();
+
+        public static Option<ContentPackageId> Parse(string s)
+            => ReflectionUtils.ParseDerived<ContentPackageId, string>(s);
+    }
+}

Barotrauma/BarotraumaShared/SharedSource/ContentManagement/ContentPackage/ContentPackageId/SteamWorkshopId.cs

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+#nullable enable
+using System;
+using System.Globalization;
+
+namespace Barotrauma
+{
+    sealed class SteamWorkshopId : ContentPackageId
+    {
+        public readonly UInt64 Value;
+
+        public SteamWorkshopId(UInt64 value)
+        {
+            Value = value;
+        }
+
+        private const string Prefix = "STEAM_WORKSHOP_";
+        
+        public override string StringRepresentation => Value.ToString(CultureInfo.InvariantCulture);
+
+        public override bool Equals(object? obj)
+            => obj is SteamWorkshopId otherWorkshopId && otherWorkshopId.Value == Value;
+
+        public override int GetHashCode() => Value.GetHashCode();
+
+        public new static Option<SteamWorkshopId> Parse(string s)
+        {
+            if (s.StartsWith(Prefix)) { s = s[Prefix.Length..]; }
+            if (!UInt64.TryParse(s, out var id) || id == 0) { return Option<SteamWorkshopId>.None(); }
+            return Option<SteamWorkshopId>.Some(new SteamWorkshopId(id));
+        }
+    }
+}