Add DarkStream reward table parser

Parse table/darkstream.xml with M2dFeatureLocale for locale filtering.
Bump version to 2.3.9.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: AngeloTadeucci

Maple2.File.Parser/Maple2.File.Parser.csproj

@@ -13,7 +13,7 @@
         <PackageTags>MapleStory2, File, Parser, m2d, xml</PackageTags>
         <!-- Use following lines to write the generated files to disk. -->
         <EmitCompilerGeneratedFiles Condition=" '$(Configuration)' == 'Debug' ">true</EmitCompilerGeneratedFiles>
-        <PackageVersion>2.3.8</PackageVersion>
+        <PackageVersion>2.3.9</PackageVersion>
         <TargetFramework>net8.0</TargetFramework>
         <PackageReadmeFile>README.md</PackageReadmeFile>
         <ImplicitUsings>enable</ImplicitUsings>

Maple2.File.Parser/TableParser.cs

@@ -104,6 +104,7 @@ public class TableParser {
     private readonly XmlSerializer autoActionPricePackageSerializer;
     private readonly XmlSerializer pvpRankingDuelModeSerializer;
     private readonly XmlSerializer questGroupSerializer;
+    private readonly XmlSerializer darkStreamSerializer;
 
     private readonly string locale;
     private readonly string language;
@@ -202,6 +203,7 @@ public TableParser(M2dReader xmlReader, string language) {
         autoActionPricePackageSerializer = new XmlSerializer(typeof(AutoActionPricePackageRoot));
         pvpRankingDuelModeSerializer = new XmlSerializer(typeof(PvpRankingDuelModeRoot));
         questGroupSerializer = new XmlSerializer(typeof(QuestGroupRoot));
+        darkStreamSerializer = new XmlSerializer(typeof(DarkStreamRoot));
 
         locale = FeatureLocaleFilter.Locale.ToLower();
         this.language = language;
@@ -1575,4 +1577,14 @@ public IEnumerable<JobTableNew> ParseJobTableNew() {
             yield return (entry.id, entry);
         }
     }
+
+    public IEnumerable<(int Round, DarkStreamReward Reward)> ParseDarkStream() {
+        XmlReader reader = xmlReader.GetXmlReader(xmlReader.GetEntry("table/darkstream.xml"));
+        var data = darkStreamSerializer.Deserialize(reader) as DarkStreamRoot;
+        Debug.Assert(data != null);
+
+        foreach (DarkStreamReward entry in data.reward) {
+            yield return (entry.round, entry);
+        }
+    }
 }

Maple2.File.Parser/Xml/Table/DarkStream.cs

@@ -0,0 +1,18 @@
+using System.Xml.Serialization;
+using M2dXmlGenerator;
+
+namespace Maple2.File.Parser.Xml.Table;
+
+// ./data/xml/table/darkstream.xml
+[XmlRoot("ms2")]
+public partial class DarkStreamRoot {
+    [M2dFeatureLocale(Selector = "round")] private IList<DarkStreamReward> _reward;
+}
+
+public partial class DarkStreamReward : IFeatureLocale {
+    [XmlAttribute] public int round;
+    [XmlAttribute] public float expRate;
+    [XmlAttribute] public int meso;
+    [XmlAttribute] public int habi;
+    [XmlAttribute] public string items = string.Empty;
+}

Maple2.File.Tests/TableParserTest.cs

@@ -739,4 +739,27 @@ public void TestQuestGroup() {
             continue;
         }
     }
+
+    [TestMethod]
+    public void TestDarkStream() {
+        var results = new Dictionary<int, DarkStreamReward>();
+        foreach ((int round, DarkStreamReward reward) in _parser.ParseDarkStream()) {
+            results[round] = reward;
+        }
+
+        // darkstream.xml has 31 entries (rounds 0–30) for the default (non-locale) set
+        Assert.AreEqual(31, results.Count);
+        Assert.IsTrue(results.ContainsKey(0));
+        Assert.IsTrue(results.ContainsKey(30));
+
+        // Spot check round 0
+        Assert.AreEqual(0.1f, results[0].expRate);
+        Assert.AreEqual(100, results[0].meso);
+        Assert.AreEqual(10, results[0].habi);
+
+        // Spot check round 30
+        Assert.AreEqual(6f, results[30].expRate);
+        Assert.AreEqual(70000, results[30].meso);
+        Assert.AreEqual(2300, results[30].habi);
+    }
 }