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Linkrealms-Extractor.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net5.0</TargetFramework>
+    <RootNamespace>Linkrealms_Extractor</RootNamespace>
+  </PropertyGroup>
+
+</Project>

Linkrealms-Extractor.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.34407.143
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Linkrealms-Extractor", "Linkrealms-Extractor.csproj", "{417A4153-4192-426C-8543-123A4A18D22F}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{417A4153-4192-426C-8543-123A4A18D22F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{417A4153-4192-426C-8543-123A4A18D22F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{417A4153-4192-426C-8543-123A4A18D22F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{417A4153-4192-426C-8543-123A4A18D22F}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {C763ABE9-83D5-4CF0-9F51-30A7A2B2D99F}
+	EndGlobalSection
+EndGlobal

Program.cs

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+using System;
+using System.IO;
+
+namespace Linkrealms_Extractor
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            string path = Path.GetDirectoryName(args[0]);
+            path = path.Remove(path.IndexOf("\\resources"));
+            BinaryReader br = new(File.OpenRead(Path.GetDirectoryName(args[0]) + "//" + Path.GetFileNameWithoutExtension(args[0]) + ".idx"));
+
+            System.Collections.Generic.List<Subfile> data = new();
+
+            while (br.BaseStream.Position < br.BaseStream.Length)
+            {
+                string name = br.ReadString();
+                br.BaseStream.Position += 0xA4 - name.Length - 1;
+                data.Add(new()
+                {
+                    name = name,
+                    start = br.ReadInt32(),
+                    size = br.ReadInt32()
+                });
+            }
+
+            foreach (Subfile file in data)
+            {
+                br.BaseStream.Position = file.start;
+                try
+                {
+                    Directory.CreateDirectory(path + "//" + Path.GetDirectoryName(file.name));
+                    using FileStream FS = File.Create(path + "//" + file.name);
+                    BinaryWriter bw = new(FS);
+                    bw.Write(br.ReadBytes(file.size));
+                    bw.Close();
+                }
+                catch(DirectoryNotFoundException)//"particles.idx" has an empty spot where a file's data should be at 0x84FD4
+                {
+                    continue;
+                }
+            }
+        }
+
+        class Subfile
+        {
+            public string name;
+            public int start;
+            public int size;
+        }
+    }
+}