Implement Daybreak.API. Reorganize FocusView components (#995)

.github/workflows/cd.yaml

@@ -82,21 +82,6 @@ jobs:
       env:
         RuntimeIdentifier: win-${{ matrix.targetplatform }}
 
-    - name: Create publish installer files
-      run: dotnet publish .\Daybreak.Installer\Daybreak.Installer.csproj -c $env:Configuration -r $env:RuntimeIdentifier --property:SolutionDir=$env:GITHUB_WORKSPACE -p:PublishReadyToRun=true -p:PublishSingleFile=true --self-contained true -o .\Publish
-      env:
-        RuntimeIdentifier: win-${{ matrix.targetplatform }}
-
-    - name: Create publish extractor files
-      run: dotnet publish .\Daybreak.7ZipExtractor\Daybreak.7ZipExtractor.csproj -c $env:Configuration -r $env:RuntimeIdentifier --property:SolutionDir=$env:GITHUB_WORKSPACE -p:PublishReadyToRun=true -p:PublishSingleFile=false --self-contained true -o .\Publish
-      env:
-        RuntimeIdentifier: win-${{ matrix.targetplatform }}
-
-    - name: Create publish API files
-      run: dotnet publish .\Daybreak.API\Daybreak.API.csproj -c $env:Configuration -r $env:RuntimeIdentifier --property:SolutionDir=$env:GITHUB_WORKSPACE -p:PublishSingleFile=false --self-contained true -o .\Publish
-      env:
-        RuntimeIdentifier: win-${{ matrix.targetplatform }}
-
     - name: Pack publish files
       run: |
         Write-Host $env

Daybreak.7ZipExtractor/Daybreak.7ZipExtractor.csproj

@@ -6,7 +6,7 @@
     <RootNamespace>Daybreak._7ZipExtractor</RootNamespace>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
-    <Platforms>AnyCPU;x64</Platforms>
+    <Platforms>x64</Platforms>
   </PropertyGroup>
 
   <ItemGroup>

Daybreak.API/Configuration/BuildInfo.cs

@@ -0,0 +1,11 @@
+namespace Daybreak.API.Configuration;
+
+public static class BuildInfo
+{
+    public const string Configuration =
+#if DEBUG
+            "Debug";
+#else
+            "Release";
+#endif
+}

Daybreak.API/Configuration/WebApplicationBuilderExtensions.cs

@@ -0,0 +1,41 @@
+namespace Daybreak.API.Configuration;
+
+public static class WebApplicationBuilderExtensions
+{
+    public static WebApplicationBuilder WithConfiguration(this WebApplicationBuilder builder)
+    {
+        var config = BuildInfo.Configuration;
+        var appSettingsStream = GetManifestResourceStream($"Daybreak.API.Configuration.appsettings.json");
+        if (appSettingsStream is null)
+        {
+            throw new InvalidOperationException("Failed to load appsettings.json");
+        }
+
+        var appSettingsConfigStream = GetManifestResourceStream($"Daybreak.API.Configuration.appsettings.{config}.json");
+        if (appSettingsConfigStream is null)
+        {
+            throw new InvalidOperationException($"Failed to load appsettings.{config}.json");
+        }
+
+        builder.Configuration
+            .AddJsonStream(appSettingsStream)
+            .AddJsonStream(appSettingsConfigStream)
+            .AddEnvironmentVariables();
+
+        builder.WebHost.UseSetting(WebHostDefaults.PreventHostingStartupKey, "true");
+        return builder;
+    }
+
+    private static Stream? GetManifestResourceStream(string name)
+    {
+        var assembly = typeof(WebApplicationBuilderExtensions).Assembly;
+        var resourceName = assembly.GetManifestResourceNames()
+            .FirstOrDefault(n => n.EndsWith(name, StringComparison.OrdinalIgnoreCase));
+        if (resourceName is null)
+        {
+            return default;
+        }
+
+        return assembly.GetManifestResourceStream(resourceName);
+    }
+}

Daybreak.API/Configuration/appsettings.Debug.json

@@ -0,0 +1,2 @@
+{
+}

Daybreak.API/Configuration/appsettings.Release.Debug.json

@@ -0,0 +1,10 @@
+{
+  "Logging": {
+    "MinimumLevel": {
+      "Default": "Debug",
+      "Override": {
+        "Microsoft": "Warning"
+      }
+    }
+  }
+}

Daybreak.API/Configuration/appsettings.Release.json

@@ -0,0 +1,2 @@
+{
+}

Daybreak.API/Configuration/appsettings.json

@@ -0,0 +1,13 @@
+{
+  "Logging": {
+    "MinimumLevel": {
+      "Default": "Debug",
+      "Override": {
+        "Microsoft": "Debug"
+      }
+    }
+  },
+  "Correlation": {
+    "Header": "X-Correlation-Vector"
+  }
+}

Daybreak.API/Controllers/Rest/CharacterSelectController.cs

@@ -0,0 +1,51 @@
+using Daybreak.API.Interop.GuildWars;
+using Daybreak.API.Services;
+using Daybreak.Shared.Models.Api;
+using Microsoft.AspNetCore.Mvc;
+using Net.Sdk.Web;
+using System.Core.Extensions;
+
+namespace Daybreak.API.Controllers.Rest;
+
+[GenerateController("api/v1/rest/character-select")]
+[Tags("Character Select")]
+public sealed class CharacterSelectController(
+    CharacterSelectService characterSelectService)
+{
+    private readonly CharacterSelectService characterSelectService = characterSelectService.ThrowIfNull();
+
+    [GenerateGet]
+    [EndpointName("GetCharacterSelectInformation")]
+    [EndpointSummary("Get Character Select Information")]
+    [EndpointDescription("Get the character select information for the current player. Returns a serialized CharacterSelectInformation object")]
+    [ProducesResponseType<CharacterSelectInformation>(StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status503ServiceUnavailable)]
+    public async Task<IResult> GetCharacterSelectInformation(
+        CancellationToken cancellationToken)
+    {
+        var characterSelectInfo = await this.characterSelectService.GetCharacterSelectInformation(cancellationToken);
+        return characterSelectInfo is null ?
+            Results.StatusCode(StatusCodes.Status503ServiceUnavailable) :
+            Results.Ok(characterSelectInfo);
+    }
+
+    [GeneratePost("{identifier}")]
+    [EndpointName("ChangeCharacter")]
+    [EndpointSummary("Change Character by identifier")]
+    [EndpointDescription("Logs out from the current character and tries to log in with the desired character. Identifier can be either uuid or character name")]
+    [ProducesResponseType(StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status500InternalServerError)]
+    [ProducesResponseType(StatusCodes.Status503ServiceUnavailable)]
+    public async Task<IResult> ChangeCharacter(
+        [FromRoute] string identifier,
+        CancellationToken cancellationToken)
+    {
+        var isUuid = Uuid.TryParse(identifier, out _);
+        var result = isUuid
+            ? await this.characterSelectService.ChangeCharacterByUuid(identifier, cancellationToken)
+            : await this.characterSelectService.ChangeCharacterByName(identifier, cancellationToken);
+        return result ?
+            Results.Ok() :
+            Results.StatusCode(StatusCodes.Status500InternalServerError);
+    }
+}

Daybreak.API/Controllers/Rest/MainPlayerController.cs

@@ -0,0 +1,102 @@
+using Daybreak.API.Services;
+using Daybreak.Shared.Models.Api;
+using Microsoft.AspNetCore.Mvc;
+using Net.Sdk.Web;
+using System.Core.Extensions;
+
+namespace Daybreak.API.Controllers.Rest;
+
+[GenerateController("api/v1/rest/main-player")]
+[Tags("Main Player")]
+public sealed class MainPlayerController(
+    MainPlayerService mainPlayerService,
+    ILogger<MainPlayerController> logger)
+{
+    private readonly MainPlayerService mainPlayerService = mainPlayerService.ThrowIfNull();
+    private readonly ILogger<MainPlayerController> logger = logger.ThrowIfNull();
+
+    [GenerateGet("state")]
+    [EndpointName("GetMainPlayerState")]
+    [EndpointSummary("Get the current MainPlayerState")]
+    [EndpointDescription("Get the current MainPlayerState. Returns a json serialized MainPlayerState object. You can use the websocket endpoint to subscribe to MainPlayerState updates on each game thread proc")]
+    [ProducesResponseType<MainPlayerState>(StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status503ServiceUnavailable)]
+    public async Task<IResult> GetMainPlayerState(CancellationToken cancellationToken)
+    {
+        var mainPlayerState = await this.mainPlayerService.GetMainPlayerState(cancellationToken);
+        return mainPlayerState is not null ? Results.Ok(mainPlayerState) : Results.StatusCode(StatusCodes.Status503ServiceUnavailable);
+    }
+
+    [GenerateGet("quest-log")]
+    [EndpointName("GetQuestLog")]
+    [EndpointSummary("Get the current Quest Log")]
+    [EndpointDescription("Get the current Quest Log. Returns a json serialized QuestLogInformation object")]
+    [ProducesResponseType<QuestLogInformation>(StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status503ServiceUnavailable)]
+    public async Task<IResult> GetQuestLog(CancellationToken cancellationToken)
+    {
+        var questLog = await this.mainPlayerService.GetQuestLog(cancellationToken);
+        return questLog is not null ? Results.Ok(questLog) : Results.StatusCode(StatusCodes.Status503ServiceUnavailable);
+    }
+
+    [GenerateGet("info")]
+    [EndpointName("GetMainPlayerInformation")]
+    [EndpointSummary("Get the current MainPlayerInformation")]
+    [EndpointDescription("Get the current MainPlayerInformation. Returns a json serialized MainPlayerInformation object")]
+    [ProducesResponseType<MainPlayerInformation>(StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status503ServiceUnavailable)]
+    public async Task<IResult> GetMainPlayerInformation(CancellationToken cancellationToken)
+    {
+        var mainPlayerInformation = await this.mainPlayerService.GetMainPlayerInformation(cancellationToken);
+        return mainPlayerInformation is not null ? Results.Ok(mainPlayerInformation) : Results.StatusCode(StatusCodes.Status503ServiceUnavailable);
+    }
+
+    [GenerateGet("build")]
+    [EndpointName("GetMainPlayerBuild")]
+    [EndpointSummary("Get the current build")]
+    [EndpointDescription("Get the current build. Returns a json serialized BuildEntry object")]
+    [ProducesResponseType<BuildEntry>(StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status503ServiceUnavailable)]
+    public async Task<IResult> GetMainPlayerBuild(CancellationToken cancellationToken)
+    {
+        var build = await this.mainPlayerService.GetCurrentBuild(cancellationToken);
+        return build is not null ? Results.Ok(build) : Results.StatusCode(StatusCodes.Status503ServiceUnavailable);
+    }
+
+    [GeneratePost("build")]
+    [EndpointName("SetMainPlayerBuild")]
+    [EndpointSummary("Set the current build")]
+    [EndpointDescription("Set the current build. Returns 200 is the operation has succeeded")]
+    [ProducesResponseType(StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status400BadRequest)]
+    [ProducesResponseType(StatusCodes.Status503ServiceUnavailable)]
+    public async Task<IResult> SetMainPlayerBuild([FromQuery(Name = "code")] string? code, CancellationToken cancellationToken)
+    {
+        var result = await this.mainPlayerService.SetCurrentBuild(code ?? string.Empty, cancellationToken);
+        return result ? Results.Ok() : Results.StatusCode(StatusCodes.Status503ServiceUnavailable);
+    }
+
+    [GenerateGet("instance-info")]
+    [EndpointName("GetMainPlayerInstanceInfo")]
+    [EndpointSummary("Get the current instance info")]
+    [EndpointDescription("Get the current instance info. Returns a json serialized MainPlayerInstanceInfo object")]
+    [ProducesResponseType<InstanceInfo>(StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status503ServiceUnavailable)]
+    public async Task<IResult> GetMainPlayerInstanceInfo(CancellationToken cancellationToken)
+    {
+        var instanceInfo = await this.mainPlayerService.GetMainPlayerInstance(cancellationToken);
+        return instanceInfo is not null ? Results.Ok(instanceInfo) : Results.StatusCode(StatusCodes.Status503ServiceUnavailable);
+    }
+
+    [GenerateGet("title")]
+    [EndpointName("GetMainPlayerTitleInfo")]
+    [EndpointSummary("Get the current title info")]
+    [EndpointDescription("Get the current title info. Returns a json serialized TitleInfo object")]
+    [ProducesResponseType<TitleInfo>(StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status503ServiceUnavailable)]
+    public async Task<IResult> GetMainPlayerTitleInfo(CancellationToken cancellationToken)
+    {
+        var titleInfo = await this.mainPlayerService.GetTitleInfo(cancellationToken);
+        return titleInfo is not null ? Results.Ok(titleInfo) : Results.StatusCode(StatusCodes.Status503ServiceUnavailable);
+    }
+}

Daybreak.API/Controllers/Rest/PartyController.cs

@@ -0,0 +1,38 @@
+using Daybreak.API.Services;
+using Daybreak.Shared.Models.Api;
+using Microsoft.AspNetCore.Mvc;
+using Net.Sdk.Web;
+
+namespace Daybreak.API.Controllers.Rest;
+
+[GenerateController("api/v1/rest/party")]
+[Tags("Party")]
+public sealed class PartyController(PartyService partyService)
+{
+    private readonly PartyService partyService = partyService;
+
+    [GenerateGet("loadout")]
+    [EndpointName("GetPartyLoadout")]
+    [EndpointSummary("Get the current party loadout")]
+    [EndpointDescription("Get the current party loadout. Returns a json serialized PartyLoadout object")]
+    [ProducesResponseType<PartyLoadout>(StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status503ServiceUnavailable)]
+    public async Task<IResult> GetPartyLoadout(
+        CancellationToken cancellationToken)
+    {
+        var partyLoadout = await this.partyService.GetPartyLoadout(cancellationToken);
+        return partyLoadout is not null ? Results.Ok(partyLoadout) : Results.StatusCode(StatusCodes.Status503ServiceUnavailable);
+    }
+
+    [GeneratePost("loadout")]
+    [EndpointName("SetPartyLoadout")]
+    [EndpointSummary("Set the current party loadout")]
+    [EndpointDescription("Set the current party loadout")]
+    [ProducesResponseType(StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status503ServiceUnavailable)]
+    public async Task<IResult> SetPartyLoadout([FromBody] PartyLoadout partyLoadout, CancellationToken cancellationToken)
+    {
+        var result = await this.partyService.SetPartyLoadout(partyLoadout, cancellationToken);
+        return result ? Results.Ok() : Results.StatusCode(StatusCodes.Status503ServiceUnavailable);
+    }
+}

Daybreak.API/Controllers/TestController.cs

@@ -1,13 +0,0 @@
-using Net.Sdk.Web;
-
-namespace Daybreak.API.Controllers;
-
-[GenerateController("api/test")]
-public sealed class TestController
-{
-    [GenerateGet("testing")]
-    public IResult GetTest(CancellationToken token)
-    {
-        return Results.Text("Hello from injected ASP-NET Core!", "text/plain");
-    }
-}

Daybreak.API/Controllers/WebSocket/MainPlayer/MainPlayerStateRoute.cs

@@ -0,0 +1,67 @@
+using Daybreak.API.Models;
+using Daybreak.API.Services;
+using Daybreak.API.WebSockets;
+using Daybreak.Shared.Models.Api;
+using System.Buffers;
+using System.Core.Extensions;
+using System.Extensions.Core;
+using System.Net.WebSockets;
+
+namespace Daybreak.API.Controllers.WebSocket.MainPlayer;
+
+public sealed class MainPlayerStateRoute(
+    MainPlayerService mainPlayerStateService,
+    ChatService chatService,
+    ILogger<MainPlayerStateRoute> logger)
+        : UpdateWebSocketRoute
+{
+    private const int DefaultFrequency = 1000;
+
+    private readonly MainPlayerService mainPlayerStateService = mainPlayerStateService.ThrowIfNull();
+    private readonly ChatService chatService = chatService.ThrowIfNull();
+    private readonly ILogger<MainPlayerStateRoute> logger = logger.ThrowIfNull();
+
+    private CallbackRegistration? mainPlayerStateRegistration;
+
+    protected override int BufferSize => 256;
+
+    public override Task ExecuteAsync(WebSocketMessageType type, ReadOnlySequence<byte> data, CancellationToken cancellationToken)
+    {
+        return Task.CompletedTask;
+    }
+
+    public override async Task SocketAccepted(CancellationToken cancellationToken)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        if (!int.TryParse(this.Context?.Request.Query["f"].FirstOrDefault(), out var freq))
+        {
+            freq = DefaultFrequency;
+        }
+
+        var freqTimeSpan = TimeSpan.FromMilliseconds(freq);
+        scopedLogger.LogInformation("WebSocket accepted {id} with frequency {frequency}", this.Context?.Connection.Id ?? string.Empty, freqTimeSpan);
+
+        this.mainPlayerStateRegistration = this.mainPlayerStateService.RegisterMainStateConsumer(freqTimeSpan, this.SendUpdate);
+
+        await this.chatService.AddMessageAsync(
+            message: $"{nameof(MainPlayerState)} subscriber added: {this.Context?.Connection.RemoteIpAddress?.ToString()}:{this.Context?.Connection.RemotePort} with frequency {freq}ms",
+            sender: "Daybreak.API",
+            channel: Channel.Whisper,
+            cancellationToken: cancellationToken);
+    }
+
+    public override async Task SocketClosed()
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+
+        this.mainPlayerStateRegistration?.Dispose();
+        this.mainPlayerStateRegistration = default;
+
+        scopedLogger.LogInformation("WebSocket closed {id}", this.Context?.Connection.Id ?? string.Empty);
+        await this.chatService.AddMessageAsync(
+            message: $"{nameof(MainPlayerState)} subscriber removed: {this.Context?.Connection.RemoteIpAddress?.ToString()}:{this.Context?.Connection.RemotePort}",
+            sender: "Daybreak.API",
+            channel: Channel.Whisper,
+            cancellationToken: CancellationToken.None);
+    }
+}

Daybreak.API/Converters/PointerValueConverter.cs

@@ -0,0 +1,19 @@
+using Daybreak.API.Interop;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace Daybreak.API.Converters;
+
+public sealed class PointerValueConverter : JsonConverter<PointerValue>
+{
+    public override PointerValue Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+    {
+        var s = reader.GetString() ?? throw new JsonException("Expected string");
+        return PointerValue.Parse(s);
+    }
+
+    public override void Write(Utf8JsonWriter writer, PointerValue value, JsonSerializerOptions options)
+    {
+        writer.WriteStringValue(value.ToString());
+    }
+}

Daybreak.API/Daybreak.API.csproj

@@ -9,33 +9,49 @@
     <StripSymbols>true</StripSymbols>
     <InteropExports>true</InteropExports>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <EnableRequestDelegateGenerator>true</EnableRequestDelegateGenerator>
     
     <PublishAot>true</PublishAot>
     <SelfContained>true</SelfContained>
-  
-    
+
     <AspNetCoreHostingModel>OutOfProcess</AspNetCoreHostingModel>
     <UseAppHost>false</UseAppHost>
     <EnableIISSupport>false</EnableIISSupport>
     <InvariantGlobalization>true</InvariantGlobalization>
+    <Platforms>x86</Platforms>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Net.Sdk.Web.Extensions.SourceGenerators" Version="0.9.0" />
+    <EmbeddedResource Include="Configuration\appsettings.Debug.json" />
+    <EmbeddedResource Include="Configuration\appsettings.json" />
+    <EmbeddedResource Include="Configuration\appsettings.Release.json" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <RdXmlFile Include="rd.xml" />
+  </ItemGroup>
+  
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="9.0.5" />
+    <PackageReference Include="MinHook.NET" Version="1.1.1" />
+    <PackageReference Include="Net.Sdk.Web.Extensions" Version="0.8.10" />
+    <PackageReference Include="Net.Sdk.Web.Extensions.SourceGenerators" Version="0.9.3" />
+    <PackageReference Include="PeNet" Version="5.1.0" />
+    <PackageReference Include="Serilog" Version="4.3.0" />
+    <PackageReference Include="Serilog.Extensions.Logging" Version="9.0.1" />
+    <PackageReference Include="Serilog.Settings.Configuration" Version="9.0.0" />
+    <PackageReference Include="Serilog.Sinks.Console" Version="6.0.0" />
+    <PackageReference Include="Serilog.Sinks.File" Version="7.0.0" />
+    <PackageReference Include="Swashbuckle.AspNetCore" Version="8.1.2" />
+    <PackageReference Include="Swashbuckle.AspNetCore.Swagger" Version="8.1.2" />
+    <PackageReference Include="Swashbuckle.AspNetCore.SwaggerGen" Version="8.1.2" />
+    <PackageReference Include="Swashbuckle.AspNetCore.SwaggerUI" Version="8.1.2" />
+    <PackageReference Include="System.Private.Uri" Version="4.3.2" />
+    <PackageReference Include="SystemExtensions.NetStandard.Generators" Version="0.1.5" PrivateAssets="all" />
+    <PackageReference Include="ZLinq" Version="1.4.7" />
   </ItemGroup>
 
   <ItemGroup>
     <ProjectReference Include="..\Daybreak.Shared\Daybreak.Shared.csproj" />
   </ItemGroup>
-
-  <PropertyGroup>
-    <DaybreakHostOutputDir>$(MSBuildProjectDirectory)\..\Daybreak\bin\x86\$(Configuration)\$(TargetFramework)\</DaybreakHostOutputDir>
-    <ShouldPublishAot>true</ShouldPublishAot>
-  </PropertyGroup>
-
-  <Target Name="PublishIntoDaybreak" AfterTargets="PostBuild" Condition="'$(ShouldPublishAot)'=='true'">
-    <Message Text="📦 dotnet-publish Daybreak.API → $(DaybreakHostOutputDir)" Importance="High" />
-
-    <Exec Command="dotnet publish &quot;$(MSBuildProjectFullPath)&quot; -c $(Configuration) -r win-x86 --self-contained true -o &quot;$(DaybreakHostOutputDir)&quot;" WorkingDirectory="$(ProjectDir)" />
-  </Target>
 </Project>

Daybreak.API/EntryPoint.cs

@@ -1,47 +1,99 @@
-using System.Net.NetworkInformation;
+using System.Diagnostics;
+using System.Extensions.Core;
+using System.Net.NetworkInformation;
 using System.Runtime.InteropServices;
+using Daybreak.API.Configuration;
 using Daybreak.API.Extensions;
+using Daybreak.API.Health;
+using Daybreak.API.Hosting;
+using Daybreak.API.Logging;
 using Daybreak.API.Serialization;
+using Daybreak.API.Services;
+using Daybreak.API.Swagger;
+using Daybreak.API.WebSockets;
+using Microsoft.Extensions.Diagnostics.HealthChecks;
 using Net.Sdk.Web;
 
 namespace Daybreak.API;
 
-public static class EntryPoint
+public class EntryPoint
 {
     private const int StartPort = 5080;
+    private static readonly TimeSpan InitializationTimeout = TimeSpan.FromSeconds(5);
+    private static readonly CancellationTokenSource CancellationTokenSource = new();
 
     [UnmanagedCallersOnly(EntryPoint = "ThreadInit"), STAThread]
     public static int ThreadInit(IntPtr _, int __)
     {
+        Environment.SetEnvironmentVariable("ASPNETCORE_HOSTINGSTARTUPASSEMBLIES", null, EnvironmentVariableTarget.Process);
+        Environment.SetEnvironmentVariable("ASPNETCORE_PREVENTHOSTINGSTARTUP", "true", EnvironmentVariableTarget.Process);
+#if DEBUG
         ConsoleExtensions.AllocateAnsiConsole();
+#endif
         var port = FindAvailablePort(StartPort);
-        if (port <= 0)
+        var app = CreateApplication(port);
+        var runTask = Task.Run(() => StartServer(app), CancellationTokenSource.Token);
+        var scopedLogger = app.Services.GetRequiredService<ILogger<EntryPoint>>().CreateScopedLogger();
+        var healthCheck = app.Services.GetRequiredService<HealthCheckService>();
+        var sw = Stopwatch.StartNew();
+        var healthy = false;
+        while(sw.Elapsed < InitializationTimeout)
         {
-            Console.WriteLine($"No available port found starting from {StartPort}");
-            return -1;
+            var status = Task.Run(() => healthCheck.CheckHealthAsync()).Result;
+            scopedLogger.LogWarning("HealthCheck status: {status} in {duration}. Report: {report}", status.Status, status.TotalDuration, string.Join("\n", status.Entries.Select(e => $"{e.Key}: {e.Value.Status}")));
+            if (status.Status is HealthStatus.Healthy)
+            {
+                healthy = true;
+                break;
+            }
+            else
+            {
+                Thread.Sleep(100);
+            }
         }
 
-        Console.WriteLine($"Starting Daybreak API on port {port}");
-        Task.Run(() => StartServer(port));
-        return port;
+        if (healthy)
+        {
+            scopedLogger.LogInformation("Daybreak API is healthy on port {port}. Initialization succeeded in {duration}", port, sw.Elapsed);
+            return port;
+        }
+        else
+        {
+            scopedLogger.LogError("Daybreak API failed to initialize in {duration}", sw.Elapsed);
+            CancellationTokenSource.Cancel();
+            return -1;
+        }
     }
 
-    private static async Task StartServer(int port)
+    private static WebApplication CreateApplication(int port)
+    {
+        var app = WebApplication.CreateBuilder()
+                .WithConfiguration()
+                .WithHosting(port)
+                .WithSwagger()
+                .WithSerializationContext()
+                .WithLogging()
+                .WithDaybreakServices()
+                .WithWebSocketRoutes()
+                .WithRoutes()
+                .WithHealthChecks()
+                .Build();
+
+        app.UseWebSockets(new WebSocketOptions { KeepAliveInterval = TimeSpan.FromSeconds(30) });
+
+        return app
+            .UseHealthChecks()
+            .UseLogging()
+            .UseRoutes()
+            .UseWebSocketRoutes()
+            .UseSwaggerWithUI();
+
+    }
+
+    private static async Task StartServer(WebApplication app)
     {
         try
         {
-            var builder = WebApplication.CreateBuilder();
-            builder.WebHost.UseUrls($"http://127.0.0.1:{port}");
-            builder.Services.ConfigureHttpJsonOptions(options =>
-            {
-                options.SerializerOptions.TypeInfoResolverChain.Insert(0, new ApiJsonSerializerContext());
-            });
-            builder.Logging.AddConsole();
-            builder.WithRoutes();
-
-            var app = builder.Build();
-            app.UseRoutes();
-
             await app.RunAsync();
         }
         catch (Exception ex)

Daybreak.API/Extensions/AttributeContextExtensions.cs

@@ -0,0 +1,17 @@
+using Daybreak.API.Interop.GuildWars;
+using Daybreak.Shared.Models.Api;
+using ZLinq;
+
+namespace Daybreak.API.Extensions;
+
+public static class AttributeContextExtensions
+{
+    public static List<AttributeEntry> GetAttributeEntryList(this AttributeContext[] attributes)
+    {
+        return attributes
+                .AsValueEnumerable()
+                .Take(45) // There are only 45 maximum attributes in game
+                .Where(a => a.LevelBase > 0 && a.Level >= a.LevelBase) // Select only attributes with points in them
+                .Select(a => new AttributeEntry(a.Id, a.LevelBase, a.Level)).ToList();
+    }
+}

Daybreak.API/Extensions/GameContextExtensions.cs

@@ -0,0 +1,101 @@
+using Daybreak.API.Interop.GuildWars;
+using System.Diagnostics.CodeAnalysis;
+
+namespace Daybreak.API.Extensions;
+
+public static unsafe class GameContextExtensions
+{
+    public static bool TryGetPlayerId(
+        this WrappedPointer<GameContext> gameContext,
+        [NotNullWhen(true)] out uint? playerId)
+    {
+        playerId = 0;
+        if (gameContext.IsNull ||
+            gameContext.Pointer->WorldContext is null ||
+            gameContext.Pointer->WorldContext->PlayerControlledChar is null)
+        {
+            return false;
+        }
+
+        playerId = gameContext.Pointer->WorldContext->PlayerControlledChar->AgentId;
+        return true;
+    }
+
+    public static bool TryGetBuildContext(
+        this WrappedPointer<GameContext> gameContext,
+        [NotNullWhen(true)] out GuildWarsArray<SkillbarContext>? skillbars,
+        [NotNullWhen(true)] out GuildWarsArray<PartyAttribute>? attributes,
+        [NotNullWhen(true)] out GuildWarsArray<ProfessionsContext>? professions,
+        [NotNullWhen(true)] out GuildWarsArray<uint>? unlockedSkills)
+    {
+        skillbars = default;
+        attributes = default;
+        professions = default;
+        unlockedSkills = default;
+        if (gameContext.IsNull ||
+            gameContext.Pointer->WorldContext is null)
+        {
+            return false;
+        }
+
+        skillbars = gameContext.Pointer->WorldContext->Skillbars;
+        attributes = gameContext.Pointer->WorldContext->Attributes;
+        professions = gameContext.Pointer->WorldContext->Professions;
+        unlockedSkills = gameContext.Pointer->WorldContext->UnlockedCharacterSkills;
+        return true;
+    }
+
+    public static bool TryGetPlayerParty(
+        this WrappedPointer<GameContext> gameContext,
+        [NotNullWhen(true)] out uint? partyId,
+        [NotNullWhen(true)] out GuildWarsArray<PlayerPartyMember>? players,
+        [NotNullWhen(true)] out GuildWarsArray<HeroPartyMember>? heroes,
+        [NotNullWhen(true)] out GuildWarsArray<HenchmanPartyMember>? henchmen)
+    {
+        partyId = default;
+        players = default;
+        heroes = default;
+        henchmen = default;
+        if (gameContext.IsNull ||
+            gameContext.Pointer->PartyContext is null)
+        {
+            return false;
+        }
+
+        partyId = gameContext.Pointer->PartyContext->PlayerParty->PartyId;
+        players = gameContext.Pointer->PartyContext->PlayerParty->Players;
+        heroes = gameContext.Pointer->PartyContext->PlayerParty->Heroes;
+        henchmen = gameContext.Pointer->PartyContext->PlayerParty->Henchmen;
+        return true;
+    }
+
+    public static bool TryGetHeroFlags(
+        this WrappedPointer<GameContext> gameContext,
+        [NotNullWhen(true)]out GuildWarsArray<HeroFlag>? heroFlags)
+    {
+        heroFlags = default;
+        if (gameContext.IsNull ||
+            gameContext.Pointer->WorldContext is null)
+        {
+            return false;
+        }
+
+        heroFlags = gameContext.Pointer->WorldContext->HeroFlags;
+        return true;
+    }
+
+    public static bool TryGetAccountContext(
+        this WrappedPointer<GameContext> gameContext,
+        out WrappedPointer<AccountGameContext> accountContext)
+    {
+        accountContext = default;
+        if (gameContext.IsNull ||
+            gameContext.Pointer->AccountContext is null)
+        {
+            return false;
+        }
+
+        accountContext = gameContext.Pointer->AccountContext;
+        return true;
+    }
+}

Daybreak.API/Health/AddressHealthCheck.cs

@@ -0,0 +1,31 @@
+using Daybreak.API.Serialization;
+using Daybreak.API.Services.Interop;
+using Microsoft.Extensions.Diagnostics.HealthChecks;
+using System.Text.Json;
+using ZLinq;
+
+namespace Daybreak.API.Health;
+
+public sealed class AddressHealthCheck(IEnumerable<IAddressHealthService> addressHealthServices)
+    : IHealthCheck
+{
+    private readonly IEnumerable<IAddressHealthService> addressHealthServices = addressHealthServices;
+
+    public Task<HealthCheckResult> CheckHealthAsync(HealthCheckContext context, CancellationToken cancellationToken = default)
+    {
+        var states = this.addressHealthServices.AsValueEnumerable().SelectMany(addressService => addressService.GetAddressStates());
+        var healthy = !states.Any(s => s.Address == 0x0);
+        using var statesArray = states.ToArrayPool();
+        var serialized = JsonSerializer.SerializeToElement(statesArray.ArraySegment, ApiJsonSerializerContext.Default.ArraySegmentAddressState);
+        var meta = new Dictionary<string, object>
+        {
+            ["Count"] = statesArray.Size,
+            ["Invalid"] = states.Count(s => s.Address == 0x0),
+            ["States"] = serialized,
+        };
+
+        return Task.FromResult(healthy
+            ? HealthCheckResult.Healthy("Addresses are initialized", meta)
+            : HealthCheckResult.Unhealthy("Addresses are not initialized", data: meta));
+    }
+}

Daybreak.API/Health/HooksHealthCheck.cs

@@ -0,0 +1,31 @@
+using Daybreak.API.Serialization;
+using Daybreak.API.Services.Interop;
+using Microsoft.Extensions.Diagnostics.HealthChecks;
+using System.Text.Json;
+using ZLinq;
+
+namespace Daybreak.API.Health;
+
+public sealed class HooksHealthCheck(IEnumerable<IHookHealthService> hookHealthServices)
+    : IHealthCheck
+{
+    private readonly IEnumerable<IHookHealthService> hookHealthServices = hookHealthServices;
+
+    public Task<HealthCheckResult> CheckHealthAsync(HealthCheckContext context, CancellationToken cancellationToken = default)
+    {
+        var states = this.hookHealthServices.AsValueEnumerable().SelectMany(hookService => hookService.GetHookStates());
+        var healthy = !states.Any(s => !s.Hooked);
+        var statesArray = states.ToArrayPool();
+        var serialized = JsonSerializer.SerializeToElement(statesArray.ArraySegment, ApiJsonSerializerContext.Default.ArraySegmentHookState);
+        var meta = new Dictionary<string, object>
+        {
+            ["Count"] = statesArray.Size,
+            ["Unhooked"] = states.Count(s => !s.Hooked),
+            ["States"] = serialized,
+        };
+
+        return Task.FromResult(healthy
+            ? HealthCheckResult.Healthy("Hooks are initialized", meta)
+            : HealthCheckResult.Unhealthy("Hooks are not initialized", data: meta));
+    }
+}

Daybreak.API/Health/WebApplicationBuilderExtensions.cs

@@ -0,0 +1,12 @@
+namespace Daybreak.API.Health;
+
+public static class WebApplicationBuilderExtensions
+{
+    public static WebApplicationBuilder WithHealthChecks(this WebApplicationBuilder builder)
+    {
+        builder.Services.AddHealthChecks()
+            .AddCheck<HooksHealthCheck>(nameof(HooksHealthCheck))
+            .AddCheck<AddressHealthCheck>(nameof(AddressHealthCheck));
+        return builder;
+    }
+}

Daybreak.API/Health/WebApplicationExtensions.cs

@@ -0,0 +1,47 @@
+using Daybreak.API.Models;
+using Microsoft.Extensions.Diagnostics.HealthChecks;
+using System.Diagnostics.CodeAnalysis;
+using System.Text.Json;
+using ZLinq;
+
+namespace Daybreak.API.Health;
+
+public static class WebApplicationExtensions
+{
+    [RequiresUnreferencedCode("The handler uses a static method that gets referenced, so there's no unreferenced code to worry about")]
+    [RequiresDynamicCode("The handler uses a static method, so there's no dynamic code to worry about")]
+    public static WebApplication UseHealthChecks(this WebApplication app)
+    {
+        app.MapGet("/api/v1/rest/health", static async (HealthCheckService healthCheckService, CancellationToken cancellationToken) =>
+        {
+            var report = await healthCheckService.CheckHealthAsync(cancellationToken);
+
+            var response = new HealthCheckResponse
+            {
+                Status = report.Status,
+                TotalDuration = report.TotalDuration,
+                Entries = report.Entries.ToDictionary(
+                    e => e.Key,
+                    e => new HealthCheckEntryResponse
+                    {
+                        Status = e.Value.Status,
+                        Description = e.Value.Description ?? string.Empty,
+                        Tags = [.. e.Value.Tags],
+                        Data = e.Value.Data
+                            .Where(kvp => kvp.Value is JsonElement je)
+                            .ToDictionary(kvp => kvp.Key,
+                                kvp => (JsonElement)kvp.Value)
+                    })
+            };
+
+            return Results.Json(response);
+        })
+        .WithName("Health")
+        .WithSummary("Service health")
+        .WithDescription($"Current health status of the service. Returns a serialized object of type {nameof(HealthCheckResponse)}")
+        .WithTags("Service")
+        .Produces<HealthCheckResponse>(StatusCodes.Status200OK)
+        .WithOpenApi();
+        return app;
+    }
+}

Daybreak.API/Hosting/WebApplicationBuilderExtensions.cs

@@ -0,0 +1,11 @@
+namespace Daybreak.API.Hosting;
+
+public static class WebApplicationBuilderExtensions
+{
+    public static WebApplicationBuilder WithHosting(this WebApplicationBuilder builder, int port)
+    {
+        builder.WebHost.ConfigureKestrel(o => o.ListenAnyIP(port));
+
+        return builder;
+    }
+}

Daybreak.API/Interop/FixedArrays.cs

@@ -0,0 +1,23 @@
+#pragma warning disable CS0436 // Type conflicts with imported type
+using System.Extensions;
+
+[assembly: GenerateFixedArray<uint>(Size = 4)]
+[assembly: GenerateFixedArray<char>(Size = 0x14)]
+[assembly: GenerateFixedArray<char>(Size = 0x40)]
+[assembly: GenerateFixedArray<byte>(Size = 0x18)]
+[assembly: GenerateFixedArray<char>(Size = 256)]
+[assembly: GenerateFixedArray<char>(Size = 32)]
+[assembly: GenerateFixedArray<char>(Size = 5)]
+[assembly: GenerateFixedArray<char>(Size = 8)]
+[assembly: GenerateFixedArray<byte>(Size = 56)]
+[assembly: GenerateFixedArray<uint>(Size = 17)]
+[assembly: GenerateFixedArray<uint>(Size = 12)]
+[assembly: GenerateFixedArray<uint>(Size = 13)]
+[assembly: GenerateFixedArray<uint>(Size = 8)]
+#pragma warning restore CS0436 // Type conflicts with imported type
+
+namespace Daybreak.API.Interop;
+
+public static class FixedArrays
+{
+}

Daybreak.API/Interop/GWAddressCache.cs

@@ -0,0 +1,26 @@
+using System.Core.Extensions;
+
+namespace Daybreak.API.Interop;
+
+public sealed class GWAddressCache(Func<nuint> provider)
+{
+    private readonly Func<nuint> provider = provider.ThrowIfNull();
+    private nuint? cachedAddress;
+
+    public nuint? GetAddress()
+    {
+        if (this.cachedAddress.HasValue)
+        {
+            return this.cachedAddress.Value;
+        }
+
+        var addr = this.provider();
+        if (addr is 0x0)
+        {
+            return null;
+        }
+
+        this.cachedAddress = addr;
+        return addr;
+    }
+}

Daybreak.API/Interop/GWDelegateCache.cs

@@ -0,0 +1,19 @@
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop;
+
+public sealed class GWDelegateCache<TDelegate>(GWAddressCache cache)
+    where TDelegate : Delegate
+{
+    public GWAddressCache Cache { get; } = cache;
+
+    public TDelegate? GetDelegate()
+    {
+        if (this.Cache.GetAddress() is not nuint address)
+        {
+            return default;
+        }
+
+        return Marshal.GetDelegateForFunctionPointer<TDelegate>((nint)address);
+    }
+}

Daybreak.API/Interop/GWFastCall.cs

@@ -0,0 +1,240 @@
+using System.ComponentModel;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop;
+
+public abstract class GWFastCall(GWAddressCache target)
+{
+    public readonly struct Void { }
+
+    public GWAddressCache Cache { get; } = target;
+    public abstract void Initialize();
+
+    protected unsafe static nint BuildFastCallThunk(nuint target)
+    {
+        if (target is 0)
+        {
+            return 0;
+        }
+
+        var code = stackalloc byte[13]
+        {
+            0x58,                      // pop eax               (ret)
+            0x59,                      // pop ecx               (ctx)
+            0x5A,                      // pop edx               (edxVal)
+            0x5B,                      // pop ebx               (wparam)
+            0x53,                      // push ebx              (wparam)
+            0x50,                      // push eax              (ret)
+            0xB8,0,0,0,0,              // mov  eax, TARGET
+            0xFF,0xE0                  // jmp  eax
+        };                             // 13 bytes total
+
+        const int TARGET_OFFSET = 7;
+        Unsafe.WriteUnaligned(ref code[TARGET_OFFSET], (uint)target);
+
+        var mem = NativeMethods.VirtualAlloc(0, 13, NativeMethods.MEM_COMMIT | NativeMethods.MEM_RESERVE, NativeMethods.PAGE_EXECUTE_READWRITE);
+        if (mem is 0)
+        {
+            throw new Win32Exception(Marshal.GetLastWin32Error(), "VirtualAlloc");
+        }
+
+        Buffer.MemoryCopy(code, (void*)mem, 13, 13);
+        return mem;
+    }
+}
+
+public unsafe sealed class GWFastCall<T1, T2, T3>(GWAddressCache target) : GWFastCall(target)
+{
+    private delegate* unmanaged[Stdcall]<T1, T2, T3> func = null;
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public unsafe T3? Invoke(T1 t1, T2 t2)
+    {
+        if (this.func is null)
+        {
+            this.Initialize();
+        }
+
+        if (this.func is not null)
+        {
+            if (typeof(T3) == typeof(Void))
+            {
+                ((delegate* unmanaged[Stdcall]<T1, T2, void>)this.func)(t1, t2);
+                return default;
+            }
+
+            return this.func(t1, t2);
+        }
+
+        return default;
+    }
+
+    public override void Initialize()
+    {
+        if (this.Cache.GetAddress() is not nuint addr ||
+            addr is 0)
+        {
+            return;
+        }
+
+        var call = BuildFastCallThunk(addr);
+        this.func = (delegate* unmanaged[Stdcall]<T1, T2, T3>)call;
+    }
+}
+
+public unsafe sealed class GWFastCall<T1, T2, T3, T4>(GWAddressCache target) : GWFastCall(target)
+{
+    private delegate* unmanaged[Stdcall]<T1, T2, T3, T4> func = null;
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public unsafe T4? Invoke(T1 t1, T2 t2, T3 t3)
+    {
+        if (this.func is null)
+        {
+            this.Initialize();
+        }
+
+        if (this.func is not null)
+        {
+            if (typeof(T4) == typeof(Void))
+            {
+                ((delegate* unmanaged[Stdcall]<T1, T2, T3, void>)this.func)(t1, t2, t3);
+                return default;
+            }
+
+            return this.func(t1, t2, t3);
+        }
+
+        return default;
+    }
+
+    public override void Initialize()
+    {
+        if (this.Cache.GetAddress() is not nuint addr ||
+            addr is 0)
+        {
+            return;
+        }
+
+        var call = BuildFastCallThunk(addr);
+        this.func = (delegate* unmanaged[Stdcall]<T1, T2, T3, T4>)call;
+    }
+}
+
+public unsafe sealed class GWFastCall<T1, T2, T3, T4, T5>(GWAddressCache target) : GWFastCall(target)
+{
+    private delegate* unmanaged[Stdcall]<T1, T2, T3, T4, T5> func = null;
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public unsafe T5? Invoke(T1 t1, T2 t2, T3 t3, T4 t4)
+    {
+        if (this.func is null)
+        {
+            this.Initialize();
+        }
+
+        if (this.func is not null)
+        {
+            if (typeof(T5) == typeof(Void))
+            {
+                ((delegate* unmanaged[Stdcall]<T1, T2, T3, T4, void>)this.func)(t1, t2, t3, t4);
+                return default;
+            }
+
+            return this.func(t1, t2, t3, t4);
+        }
+
+        return default;
+    }
+
+    public override void Initialize()
+    {
+        if (this.Cache.GetAddress() is not nuint addr ||
+            addr is 0)
+        {
+            return;
+        }
+
+        var call = BuildFastCallThunk(addr);
+        this.func = (delegate* unmanaged[Stdcall]<T1, T2, T3, T4, T5>)call;
+    }
+}
+
+public unsafe sealed class GWFastCall<T1, T2, T3, T4, T5, T6>(GWAddressCache target) : GWFastCall(target)
+{
+    private delegate* unmanaged[Stdcall]<T1, T2, T3, T4, T5, T6> func = null;
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public unsafe T6? Invoke(T1 t1, T2 t2, T3 t3, T4 t4, T5 t5)
+    {
+        if (this.func is null)
+        {
+            this.Initialize();
+        }
+
+        if (this.func is not null)
+        {
+            if (typeof(T6) == typeof(Void))
+            {
+                ((delegate* unmanaged[Stdcall]<T1, T2, T3, T4, T5, void>)this.func)(t1, t2, t3, t4, t5);
+                return default;
+            }
+
+            return this.func(t1, t2, t3, t4, t5);
+        }
+
+        return default;
+    }
+
+    public override void Initialize()
+    {
+        if (this.Cache.GetAddress() is not nuint addr ||
+            addr is 0)
+        {
+            return;
+        }
+
+        var call = BuildFastCallThunk(addr);
+        this.func = (delegate* unmanaged[Stdcall]<T1, T2, T3, T4, T5, T6>)call;
+    }
+}
+
+public unsafe sealed class GWFastCall<T1, T2, T3, T4, T5, T6, T7>(GWAddressCache target) : GWFastCall(target)
+{
+    private delegate* unmanaged[Stdcall]<T1, T2, T3, T4, T5, T6, T7> func = null;
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public unsafe T7? Invoke(T1 t1, T2 t2, T3 t3, T4 t4, T5 t5, T6 t6)
+    {
+        if (this.func is null)
+        {
+            this.Initialize();
+        }
+
+        if (this.func is not null)
+        {
+            if (typeof(T7) == typeof(Void))
+            {
+                ((delegate* unmanaged[Stdcall]<T1, T2, T3, T4, T5, T6, void>)this.func)(t1, t2, t3, t4, t5, t6);
+                return default;
+            }
+
+            return this.func(t1, t2, t3, t4, t5, t6);
+        }
+
+        return default;
+    }
+
+    public override void Initialize()
+    {
+        if (this.Cache.GetAddress() is not nuint addr ||
+            addr is 0)
+        {
+            return;
+        }
+
+        var call = BuildFastCallThunk(addr);
+        this.func = (delegate* unmanaged[Stdcall]<T1, T2, T3, T4, T5, T6, T7>)call;
+    }
+}

Daybreak.API/Interop/GWHook.cs

@@ -0,0 +1,122 @@
+using System.Runtime.InteropServices;
+using MinHook;
+
+namespace Daybreak.API.Interop;
+
+/// <summary>
+/// A thin convenience wrapper around MinHook that
+/// resolves the target address lazily through <see cref="GWAddressCache"/>
+/// unwraps an existing “CALL/JMP rel32” stub so we patch the real code
+/// exposes <see cref="Original"/> so your detour can chain
+/// </summary>
+public sealed class GWHook<T>(
+    GWAddressCache funcAddress,
+    T detour,
+    bool bypassPreviousHooks = false) : IHook<T>
+    where T : Delegate
+{
+    private readonly bool bypassPreviousHooks = bypassPreviousHooks;
+    private readonly GWAddressCache addressCache = funcAddress ?? throw new ArgumentNullException(nameof(funcAddress));
+    private readonly T detour = detour ?? throw new ArgumentNullException(nameof(detour));
+    private readonly SemaphoreSlim semaphore = new(1, 1);
+
+    private T? cont;          // trampoline returned by MinHook
+    private HookEngine? engine;
+
+    /// <summary>Delegate that calls the next hook / real function.</summary>
+    public T Continue => this.cont ??
+        throw new InvalidOperationException("Hook not initialised – call EnsureInitialized() first.");
+
+    public bool Hooked { get; private set; } = false;
+    public nuint TargetAddress { get; private set; }
+    public nuint ContinueAddress { get; private set; }
+    public nuint DetourAddress { get; private set; }
+
+    /// <summary>Installs the hook exactly once (thread-safe).</summary>
+    public bool EnsureInitialized()
+    {
+        if (this.Hooked)
+        {
+            return true;
+        }
+
+        this.semaphore.Wait();
+        try
+        {
+            if (this.Hooked)
+            {
+                return true;
+            }
+
+            var addr = this.addressCache.GetAddress();
+            if (addr.HasValue is false ||
+                addr.Value is 0)
+            {
+                return false;
+            }
+
+            var target = this.bypassPreviousHooks
+                ? UnwrapNearBranch(addr.Value)
+                : addr.Value;
+            if (target is 0)
+            {
+                return false;
+            }
+
+            this.engine = new HookEngine();
+            this.cont = this.engine.CreateHook((nint)target, this.detour);
+            this.engine.EnableHooks();
+            this.TargetAddress = target;
+            this.ContinueAddress = (nuint)this.cont.Method.MethodHandle.GetFunctionPointer();
+            this.DetourAddress = (nuint)this.detour.Method.MethodHandle.GetFunctionPointer();
+            this.Hooked = true;
+            return true;
+        }
+        catch (Exception)
+        {
+            return false;
+        }
+        finally
+        {
+            this.semaphore.Release();
+        }
+    }
+
+    public void Dispose()
+    {
+        this.semaphore.Wait();
+        try
+        {
+            if (!this.Hooked ||
+                this.engine is null)
+            {
+                return;
+            }
+
+            this.engine.DisableHooks();
+            this.engine.Dispose();
+
+            this.cont = null;
+            this.Hooked = false;
+        }
+        finally
+        {
+            this.semaphore.Release();
+        }
+    }
+
+    /// <summary>
+    /// Follows a <c>CALL rel32</c> (<c>E8</c>) **or** <c>JMP rel32</c> (<c>E9</c>)
+    /// trampoline that may have been planted by a previous hook.
+    /// </summary>
+    private static unsafe nuint UnwrapNearBranch(nuint addr)
+    {
+        byte op = Marshal.ReadByte((IntPtr)addr);
+        if (op != 0xE8 && op != 0xE9)           // not CALL/JMP rel32
+            return addr;
+
+        int rel = Marshal.ReadInt32((IntPtr)(addr + 1));
+        long dst = (long)addr + 5 + rel;        // 5-byte instruction
+        return (nuint)dst;
+    }
+}

Daybreak.API/Interop/GuildWars/AccountGameContext.cs

@@ -0,0 +1,26 @@
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+[StructLayout(LayoutKind.Explicit, Pack = 1, Size = 0xC)]
+public readonly struct AccountUnlockedCount
+{
+    [FieldOffset(0x0000)]
+    public readonly uint Id;
+}
+
+[StructLayout(LayoutKind.Explicit, Pack = 1, Size = 0x138)]
+public readonly struct AccountGameContext
+{
+    [FieldOffset(0x0000)]
+    public readonly GuildWarsArray<AccountUnlockedCount> AccountUnlockedCounts;
+
+    [FieldOffset(0x00b4)]
+    public readonly GuildWarsArray<uint> UnlockedPvpHeroes;
+
+    [FieldOffset(0x0124)]
+    public readonly GuildWarsArray<uint> UnlockedAccountSkills;
+
+    [FieldOffset(0x0134)]
+    public readonly uint AccountFlags;
+}

Daybreak.API/Interop/GuildWars/AccountInfoContext.cs

@@ -0,0 +1,15 @@
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+[StructLayout(LayoutKind.Sequential, Pack = 1, Size = 0x1C)]
+public readonly unsafe struct AccountInfoContext
+{
+    public readonly char* AccountName;
+    public readonly uint Wins;
+    public readonly uint Losses;
+    public readonly uint Rating;
+    public readonly uint QualifierPoints;
+    public readonly uint Rank;
+    public readonly uint TournamentRewardPoints;
+}

Daybreak.API/Interop/GuildWars/Agent.cs

@@ -0,0 +1,247 @@
+using System.Numerics;
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+[Flags]
+public enum AgentType : uint
+{
+    Living = 0xDB,
+    Gadget = 0x200,
+    Item   = 0x400
+}
+
+[Flags]
+public enum AgentModelType : ushort
+{
+    NPC    = 0x2000,
+    Player = 0x3000
+}
+
+[Flags]
+public enum LivingAgentState : uint
+{
+    None = 0,
+    InCombatStance              = 0x000001,
+    HasQuest                    = 0x000002,
+    Dead                        = 0x000008,
+    Female                      = 0x000200,
+    HasBossGlow                 = 0x000400,
+    HidingCape                  = 0x001000,
+    CanBeViewedInPartyWindow    = 0x020000,
+    SpawnedSpirit               = 0x040000,
+    BeingObservedOrPlayer       = 0x400000
+}
+
+public enum LivingAgentAllegiance : byte
+{
+    Ally_NonAttackable = 0x1,
+    Neutral = 0x2,
+    Enemy = 0x3,
+    Spirit_Pet = 0x4,
+    Minion = 0x5,
+    Npc_Minipet = 0x6
+};
+
+
+[Flags]
+public enum LivingAgentEffects : uint
+{
+    None            = 0,
+    Bleeding        = 0x0001,
+    Conditioned     = 0x0002,
+    Crippled1       = 0x0008, // Part of the Crippled check
+    Crippled2       = 0x0002, // Part of the Crippled check
+    Crippled        = 0x000A, // Combined flag for crippled (0x0008 | 0x0002)
+    Dead            = 0x0010,
+    DeepWound       = 0x0020,
+    Poisoned        = 0x0040,
+    Enchanted       = 0x0080,
+    DegenHexed      = 0x0400,
+    Hexed           = 0x0800,
+    WeaponSpelled   = 0x8000
+}
+
+public enum LivingAgentModelState : ushort
+{
+    // Idle states
+    Idle1 = 64,
+    Idle2 = 68,
+    Idle3 = 100,
+
+    // Casting states
+    Casting1 = 65,
+    Casting2 = 581,
+
+    // Moving states
+    Moving1 = 12,
+    Moving2 = 76,
+    Moving3 = 204,
+
+    // Attacking states
+    Attacking1 = 96,
+    Attacking2 = 1088,
+    Attacking3 = 1120,
+
+    // Other states
+    KnockedDown = 1104
+}
+
+[StructLayout(LayoutKind.Sequential, Pack = 1)]
+public readonly struct AgentEffects
+{
+    public readonly uint AgentId;
+    public readonly GuildWarsArray<Buff> Buffs;
+    public readonly GuildWarsArray<Effect> Effects;
+}
+
+[StructLayout(LayoutKind.Explicit, Pack = 1)]
+public readonly struct AgentGameContext
+{
+    [FieldOffset(0x01AC)]
+    public readonly uint InstanceTimer;
+}
+
+[StructLayout(LayoutKind.Explicit, Pack = 1, Size = 196)]
+public readonly struct AgentContext
+{
+    [FieldOffset(0x0014)]
+    public readonly uint AgentInstanceTimer;
+
+    [FieldOffset(0x002C)]
+    public readonly uint AgentId;
+
+    [FieldOffset(0x0074)]
+    public readonly GamePos Pos;
+
+    [FieldOffset(0x009C)]
+    public readonly AgentType Type;
+
+    [FieldOffset(0x00A0)]
+    public readonly Vector2 Velocity;
+}
+
+[StructLayout(LayoutKind.Explicit, Pack = 1, Size = 212)]
+public readonly struct AgentItemContext
+{
+    [FieldOffset(0x00C4)]
+    public readonly uint OwnerId;
+
+    [FieldOffset(0x00C8)]
+    public readonly uint ItemId;
+
+    [FieldOffset(0x00D0)]
+    public readonly uint ExtraType;
+}
+
+[StructLayout(LayoutKind.Explicit, Pack = 1, Size = 228)]
+public readonly struct AgentGadgetContext
+{
+    [FieldOffset(0x00CC)]
+    public readonly uint ExtraType;
+
+    [FieldOffset(0x00D0)]
+    public readonly uint GadgetId;
+}
+
+[StructLayout(LayoutKind.Explicit, Pack = 1, Size = 0x1C0)]
+public readonly unsafe struct AgentLivingContext
+{
+    [FieldOffset(0x00C4)]
+    public readonly uint OwnerId;
+
+    [FieldOffset(0x00F4)]
+    public readonly ushort AgentType; // All non-player have an identifier. Two of the same mob have the same identifier;
+
+    [FieldOffset(0x00F6)]
+    public readonly AgentModelType AgentModelType;
+
+    [FieldOffset(0x0104)]
+    public readonly TagInfo* Tags;
+
+    [FieldOffset(0x010A)]
+    public readonly byte Primary;
+
+    [FieldOffset(0x010B)]
+    public readonly byte Secondary;
+
+    [FieldOffset(0x010C)]
+    public readonly byte Level;
+
+    [FieldOffset(0x010D)]
+    public readonly byte TeamId;
+
+    [FieldOffset(0x0114)]
+    public readonly float EnergyRegen;
+
+    [FieldOffset(0x011C)]
+    public readonly float Energy;
+
+    [FieldOffset(0x0120)]
+    public readonly uint MaxEnergy;
+
+    [FieldOffset(0x0128)]
+    public readonly float HealthRegen;
+
+    [FieldOffset(0x0130)]
+    public readonly float Health;
+
+    [FieldOffset(0x0134)]
+    public readonly uint MaxHealth;
+
+    [FieldOffset(0x0138)]
+    public readonly uint Effects;
+
+    [FieldOffset(0x0154)]
+    public readonly LivingAgentModelState ModelState;
+
+    [FieldOffset(0x0158)]
+    public readonly LivingAgentState State;
+
+    [FieldOffset(0x0180)]
+    public readonly uint LoginNumber;
+
+    [FieldOffset(0x01B1)]
+    public readonly LivingAgentAllegiance Allegiance;
+
+    public readonly bool IsAlive => (!this.State.HasFlag(LivingAgentState.Dead)) && this.Health > 0f;
+
+    public readonly bool IsPlayer => this.LoginNumber is not 0;
+
+    public readonly bool IsNpc => this.LoginNumber is 0;
+}
+
+[StructLayout(LayoutKind.Explicit, Pack = 1, Size = 52)]
+public readonly struct MapAgentContext
+{
+    [FieldOffset(0x0000)]
+    public readonly float CurrentEnergy;
+
+    [FieldOffset(0x0004)]
+    public readonly float MaxEnergy;
+
+    [FieldOffset(0x0008)]
+    public readonly float EnergyRegen;
+
+    [FieldOffset(0x000C)]
+    public readonly uint SkillTimestamp;
+
+    [FieldOffset(0x0020)]
+    public readonly float CurrentHealth;
+
+    [FieldOffset(0x0024)]
+    public readonly float MaxHealth;
+
+    [FieldOffset(0x0028)]
+    public readonly float HealthRegen;
+
+    [FieldOffset(0x0030)]
+    public readonly LivingAgentEffects Effects;
+}
+
+[StructLayout(LayoutKind.Explicit, Pack = 1, Size = 0x38)]
+public readonly unsafe struct AgentInfo
+{
+    [FieldOffset(0x0034)]
+    public readonly char* NameEncoded;
+}

Daybreak.API/Interop/GuildWars/Attribute.cs

@@ -0,0 +1,93 @@
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+[StructLayout(LayoutKind.Sequential, Pack = 1)]
+public readonly struct AttributeContext
+{
+    public readonly uint Id;
+    public readonly uint LevelBase;
+    public readonly uint Level;
+    public readonly uint DecrementPoints;
+    public readonly uint IncrementPoints;
+}
+
+[StructLayout(LayoutKind.Sequential, Pack = 1)]
+public readonly struct AttributeInfo
+{
+    public readonly uint ProfessionId;
+    public readonly uint AttributeId;
+    public readonly uint NameId;
+    public readonly uint DescriptionId;
+    public readonly uint IsPve;
+}
+
+[StructLayout(LayoutKind.Sequential, Pack = 1)]
+public readonly struct PartyAttribute
+{
+    public readonly uint AgentId;
+    public readonly AttributeContext Attribute0;
+    public readonly AttributeContext Attribute1;
+    public readonly AttributeContext Attribute2;
+    public readonly AttributeContext Attribute3;
+    public readonly AttributeContext Attribute4;
+    public readonly AttributeContext Attribute5;
+    public readonly AttributeContext Attribute6;
+    public readonly AttributeContext Attribute7;
+    public readonly AttributeContext Attribute8;
+    public readonly AttributeContext Attribute9;
+    public readonly AttributeContext Attribute10;
+    public readonly AttributeContext Attribute11;
+    public readonly AttributeContext Attribute12;
+    public readonly AttributeContext Attribute13;
+    public readonly AttributeContext Attribute14;
+    public readonly AttributeContext Attribute15;
+    public readonly AttributeContext Attribute16;
+    public readonly AttributeContext Attribute17;
+    public readonly AttributeContext Attribute18;
+    public readonly AttributeContext Attribute19;
+    public readonly AttributeContext Attribute20;
+    public readonly AttributeContext Attribute21;
+    public readonly AttributeContext Attribute22;
+    public readonly AttributeContext Attribute23;
+    public readonly AttributeContext Attribute24;
+    public readonly AttributeContext Attribute25;
+    public readonly AttributeContext Attribute26;
+    public readonly AttributeContext Attribute27;
+    public readonly AttributeContext Attribute28;
+    public readonly AttributeContext Attribute29;
+    public readonly AttributeContext Attribute30;
+    public readonly AttributeContext Attribute31;
+    public readonly AttributeContext Attribute32;
+    public readonly AttributeContext Attribute33;
+    public readonly AttributeContext Attribute34;
+    public readonly AttributeContext Attribute35;
+    public readonly AttributeContext Attribute36;
+    public readonly AttributeContext Attribute37;
+    public readonly AttributeContext Attribute38;
+    public readonly AttributeContext Attribute39;
+    public readonly AttributeContext Attribute40;
+    public readonly AttributeContext Attribute41;
+    public readonly AttributeContext Attribute42;
+    public readonly AttributeContext Attribute43;
+    public readonly AttributeContext Attribute44;
+    public readonly AttributeContext Attribute45;
+    public readonly AttributeContext Attribute46;
+    public readonly AttributeContext Attribute47;
+    public readonly AttributeContext Attribute48;
+    public readonly AttributeContext Attribute49;
+    public readonly AttributeContext Attribute50;
+    public readonly AttributeContext Attribute51;
+    public readonly AttributeContext Attribute52;
+    public readonly AttributeContext Attribute53;
+
+    public readonly AttributeContext[] Attributes =>
+    [
+        this.Attribute0, this.Attribute1, this.Attribute2, this.Attribute3, this.Attribute4, this.Attribute5, this.Attribute6, this.Attribute7, this.Attribute8, this.Attribute9,
+        this.Attribute10, this.Attribute11, this.Attribute12, this.Attribute13, this.Attribute14, this.Attribute15, this.Attribute16, this.Attribute17, this.Attribute18, this.Attribute19,
+        this.Attribute20, this.Attribute21, this.Attribute22, this.Attribute23, this.Attribute24, this.Attribute25, this.Attribute26, this.Attribute27, this.Attribute28, this.Attribute29,
+        this.Attribute30, this.Attribute31, this.Attribute32, this.Attribute33, this.Attribute34, this.Attribute35, this.Attribute36, this.Attribute37, this.Attribute38, this.Attribute39,
+        this.Attribute40, this.Attribute41, this.Attribute42, this.Attribute43, this.Attribute44, this.Attribute45, this.Attribute46, this.Attribute47, this.Attribute48, this.Attribute49,
+        this.Attribute50, this.Attribute51, this.Attribute52, this.Attribute53
+    ];
+}

Daybreak.API/Interop/GuildWars/Behavior.cs

@@ -0,0 +1,8 @@
+namespace Daybreak.API.Interop.GuildWars;
+
+public enum Behavior
+{
+    Fight,
+    Guard,
+    AvoidCombat
+}

Daybreak.API/Interop/GuildWars/CharContext.cs

@@ -0,0 +1,50 @@
+using System.Extensions;
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+[StructLayout(LayoutKind.Explicit, Pack = 1)]
+public readonly struct CharContext
+{
+    [FieldOffset(0x0064)]
+    public readonly Uuid PlayerUuid;
+
+    [FieldOffset(0x0074)]
+    public readonly Array20Char PlayerName;
+
+    [FieldOffset(0x0198)]
+    public readonly uint MapId;
+
+    [FieldOffset(0x019C)]
+    public readonly uint IsExporable;
+
+    [FieldOffset(0x01A0)]
+    public readonly Array24Byte Host;
+
+    [FieldOffset(0x01B8)]
+    public readonly uint PlayerId;
+
+    [FieldOffset(0x0220)]
+    public readonly uint DistrictNumber;
+
+    [FieldOffset(0x0224)]
+    public readonly Language Language;
+
+    [FieldOffset(0x0228)]
+    public readonly uint ObserveMapId;
+
+    [FieldOffset(0x022C)]
+    public readonly uint CurrentMapId;
+
+    [FieldOffset(0x0230)]
+    public readonly uint ObserveMapType;
+
+    [FieldOffset(0x0234)]
+    public readonly uint CurrentMapType;
+
+    [FieldOffset(0x02A4)]
+    public readonly uint PlayerNumber;
+
+    [FieldOffset(0x03B8)]
+    public readonly Array64Char PlayerEmail;
+}

Daybreak.API/Interop/GuildWars/CharInfoContext.cs

@@ -0,0 +1,22 @@
+using System.Extensions;
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+[StructLayout(LayoutKind.Explicit, Pack = 1)]
+public readonly struct CharInfoContext
+{
+    [FieldOffset(0x0008)]
+    public readonly Uuid Uuid;
+    [FieldOffset(0x0018)]
+    public readonly Array20Char Name;
+    [FieldOffset(0x0040)]
+    public readonly Array17Uint Props;
+
+    public readonly uint MapId => (this.Props[0] >> 16) & 0xFFFF;
+    public readonly uint Primary => (this.Props[2] >> 20) & 0xF;
+    public readonly uint Secondary => (this.Props[7] >> 10) & 0xF;
+    public readonly uint Campaign => this.Props[7] & 0xF;
+    public readonly uint Level => (this.Props[7] >> 4) & 0x3F;
+    public readonly bool IsPvp => ((this.Props[7] >> 9) & 0x1) == 0x1;
+}

Daybreak.API/Interop/GuildWars/District.cs

@@ -0,0 +1,19 @@
+namespace Daybreak.API.Interop.GuildWars;
+
+public enum District
+{
+    Current,
+    International,
+    American,
+    EuropeEnglish,
+    EuropeFrench,
+    EuropeGerman,
+    EuropeItalian,
+    EuropeSpanish,
+    EuropePolish,
+    EuropeRussian,
+    AsiaKorean,
+    AsiaChinese,
+    AsiaJapanese,
+    Unknown = 0xff
+}

Daybreak.API/Interop/GuildWars/Frame.cs

@@ -0,0 +1,68 @@
+using Daybreak.API.Models;
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+// Very incomplete. GWCA contains a much better definition
+[StructLayout(LayoutKind.Explicit, Pack = 1, Size = 0x1AC)]
+public readonly struct Frame
+{
+    [FieldOffset(0x0008)]
+    public readonly uint FrameLayout;
+
+    [FieldOffset(0x0018)]
+    public readonly uint VisibilityFlags;
+
+    [FieldOffset(0x0020)]
+    public readonly uint Type;
+
+    [FieldOffset(0x0024)]
+    public readonly uint TemplateType;
+
+    [FieldOffset(0x00A0)]
+    public readonly GuildWarsArray<FrameInteractionCallback> FrameCallbacks;
+
+    [FieldOffset(0x00b0)]
+    public readonly uint ChildOffsetId;
+
+    [FieldOffset(0x00b4)]
+    public readonly uint FrameId;
+
+    [FieldOffset(0x0120)]
+    public readonly FrameRelation Relation;
+
+    [FieldOffset(0x0184)]
+    public readonly uint Field91;
+
+    public bool IsCreated => (this.Field91 & 0x4) != 0;
+    public bool IsHidden => (this.Field91 & 0x200) != 0;
+    public bool IsVisible => !this.IsHidden;
+    public bool IsDIsabled => (this.Field91 & 0x10) != 0;
+}
+
+[StructLayout(LayoutKind.Explicit, Pack = 1, Size = 0x1C)]
+public readonly unsafe struct FrameRelation
+{
+    [FieldOffset(0x0000)]
+    public readonly FrameRelation* Parent;
+
+    [FieldOffset(0x000C)]
+    public readonly uint FrameHashId;
+}
+
+[StructLayout(LayoutKind.Sequential, Pack =1)]
+public readonly unsafe struct InteractionMessage
+{
+    public readonly uint FrameId;
+    public readonly UIMessage MessageId;
+    public readonly void** WParam;
+}
+
+public unsafe delegate void UIInteractionCallback(InteractionMessage* message, void* wParam, void* lParam);
+
+[StructLayout(LayoutKind.Sequential, Pack = 1, Size = 0xC)]
+public unsafe readonly struct FrameInteractionCallback
+{
+    public readonly void* Callback; // UIInteractionCallback
+    public readonly void* UiCtl_Context;
+}

Daybreak.API/Interop/GuildWars/GameContext.cs

@@ -0,0 +1,28 @@
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+[StructLayout(LayoutKind.Explicit, Pack = 1)]
+public readonly unsafe struct GameContext
+{
+    [FieldOffset(0x0008)]
+    public readonly AgentGameContext* AgentGameContext;
+
+    [FieldOffset(0x0014)]
+    public readonly MapContext* MapContext;
+
+    [FieldOffset(0x0028)]
+    public readonly AccountGameContext* AccountContext;
+
+    [FieldOffset(0x002C)]
+    public readonly WorldContext* WorldContext;
+
+    [FieldOffset(0x003C)]
+    public readonly GuildContext* GuildContext;
+
+    [FieldOffset(0x0044)]
+    public readonly CharContext* CharContext;
+
+    [FieldOffset(0x004C)]
+    public readonly PartyContext* PartyContext;
+}

Daybreak.API/Interop/GuildWars/GamePos.cs

@@ -0,0 +1,11 @@
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+[StructLayout(LayoutKind.Sequential, Pack = 1)]
+public readonly struct GamePos
+{
+    public readonly float X;
+    public readonly float Y;
+    public readonly uint Plane;
+}

Daybreak.API/Interop/GuildWars/Guild.cs

@@ -0,0 +1,110 @@
+using System.Extensions;
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+[StructLayout(LayoutKind.Explicit, Pack = 1)]
+public readonly unsafe struct GuildContext
+{
+    [FieldOffset(0x0034)]
+    public readonly Array20Char PlayerName;
+
+    [FieldOffset(0x0060)]
+    public readonly uint PlayerBuildIndex;
+
+    [FieldOffset(0x0078)]
+    public readonly Array256Char Announcement;
+
+    [FieldOffset(0x0287)]
+    public readonly Array20Char AnnouncementAuthor;
+
+    [FieldOffset(0x02A0)]
+    public readonly uint PlayerGuildRank;
+
+    [FieldOffset(0x02A8)]
+    public readonly GuildWarsArray<TownAlliance> FactionOutpostGuilds;
+
+    [FieldOffset(0x02B8)]
+    public readonly uint KurzickTownCount;
+
+    [FieldOffset(0x02BC)]
+    public readonly uint LuxonTownCount;
+    
+    [FieldOffset(0x02F8)]
+    public readonly GuildWarsArray<WrappedPointer<Guild>> Guilds;
+
+    [FieldOffset(0x0358)]
+    public readonly GuildWarsArray<WrappedPointer<GuildPlayer>> PlayerRoster;
+}
+
+[StructLayout(LayoutKind.Sequential, Pack = 1)]
+public readonly struct TownAlliance
+{
+    public readonly uint Rank;
+    public readonly uint Allegiance;
+    public readonly uint Faction;
+    public readonly Array32Char Name;
+    public readonly Array5Char Tag;
+    public readonly CapeDesign Cape;
+    public readonly uint MapId;
+}
+
+[StructLayout(LayoutKind.Sequential, Pack = 1)]
+public readonly struct CapeDesign
+{
+    public readonly uint CapeBgColor;
+    public readonly uint CapeDetailColor;
+    public readonly uint CapeEmblemColor;
+    public readonly uint CapeShape;
+    public readonly uint CapeDetail;
+    public readonly uint CapeEmblem;
+    public readonly uint CapeTrim;
+}
+
+[StructLayout(LayoutKind.Explicit, Pack = 1, Size = 0x174)]
+public readonly unsafe struct GuildPlayer
+{
+    [FieldOffset(0x0004)]
+    public readonly char* NamePtr;
+    [FieldOffset(0x0008)]
+    public readonly Array20Char InvitedName;
+    [FieldOffset(0x0030)]
+    public readonly Array20Char CurrentName;
+    [FieldOffset(0x0050)]
+    public readonly Array20Char InviterName;
+    [FieldOffset(0x0080)]
+    public readonly uint InviteTime;
+    [FieldOffset(0x0084)]
+    public readonly Array20Char PromoterName;
+    [FieldOffset(0x00DC)]
+    public readonly uint Offline;
+    [FieldOffset(0x00E0)]
+    public readonly uint MemberType;
+    [FieldOffset(0x00E4)]
+    public readonly uint Status;
+}
+
+[StructLayout(LayoutKind.Explicit, Pack = 1, Size = 0xAC)]
+public readonly struct Guild
+{
+    [FieldOffset(0x0024)]
+    public readonly uint Index;
+    [FieldOffset(0x0028)]
+    public readonly uint Rank;
+    [FieldOffset(0x002C)]
+    public readonly uint Features;
+    [FieldOffset(0x0030)]
+    public readonly Array32Char Name;
+    [FieldOffset(0x0070)]
+    public readonly uint Rating;
+    [FieldOffset(0x0074)]
+    public readonly uint Faction;
+    [FieldOffset(0x0078)]
+    public readonly uint FactionPoints;
+    [FieldOffset(0x007C)]
+    public readonly uint QualifierPoints;
+    [FieldOffset(0x0080)]
+    public readonly Array8Char Tag;
+    [FieldOffset(0x0090)]
+    public readonly CapeDesign Cape;
+}

Daybreak.API/Interop/GuildWars/GuildWarsArray.cs

@@ -0,0 +1,52 @@
+using System.Collections;
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+[StructLayout(LayoutKind.Sequential, Pack = 1)]
+public readonly unsafe struct GuildWarsArray<T> : IEnumerable<T>
+    where T : unmanaged
+{
+    public readonly T* Buffer;
+    public readonly uint Capacity;
+    public readonly uint Size;
+    public readonly uint Param;
+
+    public Enumerator GetEnumerator() => new(this.Buffer, this.Size);
+
+    IEnumerator<T> IEnumerable<T>.GetEnumerator() => this.GetEnumerator();
+
+    IEnumerator IEnumerable.GetEnumerator() => this.GetEnumerator();
+
+    public unsafe struct Enumerator : IEnumerator, IEnumerator<T>
+    {
+        private readonly T* buffer;
+        private readonly uint size;
+        private int index;
+
+        internal Enumerator(T* buffer, uint size)
+        {
+            this.buffer = buffer;
+            this.size = size;
+            this.index = -1;
+        }
+
+        public bool MoveNext()
+        {
+            int next = this.index + 1;
+            if (next >= this.size)
+            {
+                return false;
+            }
+
+            this.index = next;
+            return true;
+        }
+
+        public T Current => this.buffer[this.index];
+        object IEnumerator.Current => this.Current;
+
+        public void Reset() => this.index = -1;
+        public void Dispose() { }
+    }
+}

Daybreak.API/Interop/GuildWars/Hero.cs

@@ -0,0 +1,43 @@
+using System.Extensions;
+using System.Numerics;
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+[StructLayout(LayoutKind.Explicit, Pack = 1, Size = 0x24)]
+public readonly struct HeroFlag
+{
+    [FieldOffset(0x0000)]
+    public readonly uint HeroId;
+    [FieldOffset(0x0004)]
+    public readonly uint AgentId;
+    [FieldOffset(0x0008)]
+    public readonly uint Level;
+    [FieldOffset(0x000C)]
+    public readonly Behavior Behavior;
+    [FieldOffset(0x0010)]
+    public readonly Vector2 Flag;
+    [FieldOffset(0x0020)]
+    public readonly uint LockedTargetId;
+}
+
+[StructLayout(LayoutKind.Explicit, Pack = 1, Size = 0x78)]
+public readonly struct HeroInfo
+{
+    [FieldOffset(0x0000)]
+    public readonly uint HeroId;
+    [FieldOffset(0x0004)]
+    public readonly uint AgentId;
+    [FieldOffset(0x0008)]
+    public readonly uint Level;
+    [FieldOffset(0x000C)]
+    public readonly Profession Primary;
+    [FieldOffset(0x0010)]
+    public readonly Profession Secondary;
+    [FieldOffset(0x0014)]
+    public readonly uint HeroFileId;
+    [FieldOffset(0x0018)]
+    public readonly uint ModelFileId;
+    [FieldOffset(0x0050)]
+    public readonly Array20Char Name;
+}

Daybreak.API/Interop/GuildWars/InstanceInfo.cs

@@ -0,0 +1,29 @@
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+public enum InstanceType
+{
+    Outpost,
+    Explorable,
+    Loading
+};
+
+[StructLayout(LayoutKind.Explicit, Pack = 1)]
+public readonly unsafe struct InstanceInfoContext
+{
+    [FieldOffset(0x0004)]
+    public readonly InstanceType InstanceType;
+    [FieldOffset(0x0008)]
+    public readonly AreaInfo* CurrentMapInfo;
+}
+
+[StructLayout(LayoutKind.Sequential, Pack = 1)]
+public readonly struct AreaInfo
+{
+    public readonly uint Campaign;
+    public readonly uint Continent;
+    public readonly uint Region;
+    public readonly uint RegionType;
+    public readonly uint Flags;
+}

Daybreak.API/Interop/GuildWars/Language.cs

@@ -0,0 +1,17 @@
+namespace Daybreak.API.Interop.GuildWars;
+
+public enum Language
+{
+    English,
+    Korean,
+    French,
+    German,
+    Italian,
+    Spanish,
+    TraditionalChinese,
+    Japanese = 8,
+    Polish,
+    Russian,
+    BorkBorkBork = 17,
+    Unknown = 0xff
+}

Daybreak.API/Interop/GuildWars/MapContext.cs

@@ -0,0 +1,8 @@
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+[StructLayout(LayoutKind.Explicit, Pack = 1)]
+public readonly struct MapContext
+{
+}

Daybreak.API/Interop/GuildWars/Npc.cs

@@ -0,0 +1,61 @@
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+[StructLayout(LayoutKind.Explicit)]
+public readonly unsafe struct NpcContext
+{
+    [FieldOffset(0x0000)]
+    public readonly uint ModelId;
+
+    [FieldOffset(0x000C)]
+    public readonly uint Sex;
+
+    [FieldOffset(0x0010)]
+    public readonly NpcFlags Flags;
+
+    [FieldOffset(0x0014)]
+    public readonly uint Primary;
+
+    [FieldOffset(0x001C)]
+    public readonly byte DefaultLevel;
+
+    [FieldOffset(0x0020)]
+    public readonly char* EncName;
+
+    [FieldOffset(0x0028)]
+    public readonly int FilesCount;
+
+    [FieldOffset(0x002C)]
+    public readonly int FilesCapacity;
+
+    [Flags]
+    public enum NpcFlags : uint
+    {
+        None = 0x0000,
+        Henchman = 0x0010,
+        Hero = 0x0020,
+        Spirit = 0x4000,
+        Minion = 0x0100,
+        Pet = 0x000D
+    }
+}
+
+[StructLayout(LayoutKind.Sequential, Pack = 1)]
+public readonly unsafe struct PetContext
+{
+    public readonly uint AgentId;
+    public readonly uint OwnerAgentId;
+    public readonly char* PetName;
+    public readonly uint ModelFileId1;
+    public readonly uint ModelFileId2;
+    public readonly Behavior Behavior;
+    public readonly uint LockedTargetId;
+}
+
+[StructLayout(LayoutKind.Sequential, Pack = 1)]
+public readonly struct ControlledMinion
+{
+    public readonly uint AgentId;
+    public readonly uint MinionCount;
+}

Daybreak.API/Interop/GuildWars/Party.cs

@@ -0,0 +1,124 @@
+using System.Extensions;
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+[Flags]
+public enum PlayerPartyMemberState : uint
+{
+    None = 0,
+    Connected = 1,
+    Ticked = 2
+}
+
+public enum PartySearchType
+{
+    PartySearchType_Hunting = 0,
+    PartySearchType_Mission = 1,
+    PartySearchType_Quest = 2,
+    PartySearchType_Trade = 3,
+    PartySearchType_Guild = 4,
+};
+
+[Flags]
+public enum PartyFlags : uint
+{
+    None = 0,
+    HardMode = 0x10,  // Bit 4
+    Defeated = 0x20,  // Bit 5
+    PartyLeader = 0x80   // Bit 7 (0x7th position)
+}
+
+[StructLayout(LayoutKind.Explicit, Pack = 1, Size = 0xC)]
+public readonly unsafe struct PartyMoraleContext
+{
+    [FieldOffset(0x000C)]
+    public readonly PartyMemberMoraleInfo* MoraleInfo;
+}
+
+[StructLayout(LayoutKind.Explicit, Pack = 1)]
+public readonly struct PartyMemberMoraleInfo
+{
+    [FieldOffset(0x0000)]
+    public readonly uint AgentId;
+    [FieldOffset(0x0014)]
+    public readonly uint Morale;
+}
+
+[StructLayout(LayoutKind.Explicit, Pack = 1, Size = 0x58)]
+public readonly unsafe struct PartyContext
+{
+    [FieldOffset(0x0014)]
+    public readonly PartyFlags Flags;
+    [FieldOffset(0x0040)]
+    public readonly GuildWarsArray<WrappedPointer<PartyInfo>> Parties;
+    [FieldOffset(0x0054)]
+    public readonly PartyInfo* PlayerParty;
+    [FieldOffset(0x00C0)]
+    public readonly GuildWarsArray<WrappedPointer<PartySearch>> PartySearches;
+}
+
+[StructLayout(LayoutKind.Sequential, Pack = 1, Size = 0xC)]
+public readonly struct PlayerPartyMember
+{
+    public readonly uint LogingNumber;
+    public readonly uint CalledTargetId;
+    public readonly PlayerPartyMemberState State;
+}
+
+[StructLayout(LayoutKind.Explicit, Pack = 1, Size = 0x18)]
+public readonly struct HeroPartyMember
+{
+    [FieldOffset(0x0000)]
+    public readonly uint AgentId;
+    [FieldOffset(0x0004)]
+    public readonly uint OwnerPlayerId;
+    [FieldOffset(0x0008)]
+    public readonly uint HeroId;
+    [FieldOffset(0x0014)]
+    public readonly uint Level;
+}
+
+[StructLayout(LayoutKind.Explicit, Pack = 1, Size = 0x34)]
+public readonly struct HenchmanPartyMember
+{
+    [FieldOffset(0x0000)]
+    public readonly uint AgentId;
+    [FieldOffset(0x002C)]
+    public readonly Profession Profession;
+    [FieldOffset(0x0030)]
+    public readonly uint Level;
+}
+
+[StructLayout(LayoutKind.Explicit, Pack = 1, Size = 0x84)]
+public readonly struct PartyInfo
+{
+    [FieldOffset(0x0000)]
+    public readonly uint PartyId;
+    [FieldOffset(0x0004)]
+    public readonly GuildWarsArray<PlayerPartyMember> Players;
+    [FieldOffset(0x0014)]
+    public readonly GuildWarsArray<HenchmanPartyMember> Henchmen;
+    [FieldOffset(0x0024)]
+    public readonly GuildWarsArray<HeroPartyMember> Heroes;
+    [FieldOffset(0x0034)]
+    public readonly GuildWarsArray<uint> Others;
+}
+
+[StructLayout(LayoutKind.Sequential, Pack = 1)]
+public readonly struct PartySearch
+{
+    public readonly uint PartySearchId;
+    public readonly PartySearchType PartySearchType;
+    public readonly uint HardMode;
+    public readonly uint District;
+    public readonly uint Language;
+    public readonly uint PartySize;
+    public readonly uint HeroCount;
+    public readonly Array32Char Message;
+    public readonly Array20Char PartyLeader;
+    public readonly Profession Primary;
+    public readonly Profession Secondary;
+    public readonly uint Level;
+    public readonly uint Timestamp;
+}

Daybreak.API/Interop/GuildWars/PlayerContext.cs

@@ -0,0 +1,44 @@
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+[Flags]
+public enum PlayerContextFlags : uint
+{
+    None = 0,
+    PvP = 0x800
+}
+
+[StructLayout(LayoutKind.Explicit, Pack = 1, Size = 0x4C)]
+public readonly unsafe struct PlayerContext
+{
+    [FieldOffset(0x0000)]
+    public readonly int AgentId;
+
+    [FieldOffset(0x0014)]
+    public readonly PlayerContextFlags Flags;
+
+    [FieldOffset(0x0018)]
+    public readonly uint PrimaryProfession;
+
+    [FieldOffset(0x001C)]
+    public readonly uint SecondaryProfession;
+
+    [FieldOffset(0x0024)]
+    public readonly char* NameEncoded;
+
+    [FieldOffset(0x0028)]
+    public readonly char* Name;
+
+    [FieldOffset(0x002C)]
+    public readonly uint PartyLeaderPlayerNumber;
+
+    [FieldOffset(0x0030)]
+    public readonly uint ActiveTitleTier;
+
+    [FieldOffset(0x0034)]
+    public readonly uint PlayerNumber;
+
+    [FieldOffset(0x0038)]
+    public readonly uint PartySize;
+}

Daybreak.API/Interop/GuildWars/PlayerControlledCharContext.cs

@@ -0,0 +1,10 @@
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+[StructLayout(LayoutKind.Explicit, Pack = 1)]
+public readonly struct PlayerControlledCharContext
+{
+    [FieldOffset(0x0014)]
+    public readonly uint AgentId;
+}

Daybreak.API/Interop/GuildWars/PreGameContext.cs

@@ -0,0 +1,30 @@
+using System.Extensions;
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+[StructLayout(LayoutKind.Explicit, Pack = 1)]
+public readonly struct PreGameContext
+{
+    [FieldOffset(0x0000)]
+    public readonly uint FrameId;
+
+    [FieldOffset(0x0124)]
+    public readonly uint ChosenCharacterIndex;
+
+    [FieldOffset(0x0140)]
+    public readonly uint Index1;
+
+    [FieldOffset(0x0144)]
+    public readonly uint Index2;
+
+    [FieldOffset(0x00148)]
+    public readonly GuildWarsArray<LoginCharacterContext> LoginCharacters;
+}
+
+[StructLayout(LayoutKind.Explicit, Pack = 1)]
+public readonly struct LoginCharacterContext
+{
+    [FieldOffset(0x0004)]
+    public readonly Array20Char CharacterName;
+}

Daybreak.API/Interop/GuildWars/Profession.cs

@@ -0,0 +1,47 @@
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+public enum Profession : uint
+{
+    None,
+    Warrior,
+    Ranger,
+    Monk,
+    Necromancer,
+    Mesmer,
+    Elementalist,
+    Assassin,
+    Ritualist,
+    Paragon,
+    Dervish
+}
+
+public enum ProfessionByte : byte
+{
+    None,
+    Warrior,
+    Ranger,
+    Monk,
+    Necromancer,
+    Mesmer,
+    Elementalist,
+    Assassin,
+    Ritualist,
+    Paragon,
+    Dervish
+}
+
+[StructLayout(LayoutKind.Sequential, Pack = 1, Size = 0x0014)]
+public readonly struct ProfessionsContext
+{
+    public readonly uint AgentId;
+    public readonly Profession CurrentPrimary;
+    public readonly Profession CurrentSecondary;
+    public readonly uint UnlockedProfessionsFlags;
+
+    public bool ProfessionUnlocked(int professionId)
+    {
+        return (this.UnlockedProfessionsFlags & (1U << professionId)) != 0;
+    }
+}

Daybreak.API/Interop/GuildWars/Quest.cs

@@ -0,0 +1,28 @@
+using System.Numerics;
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+[StructLayout(LayoutKind.Explicit, Pack = 1, Size = 0x0034)]
+public readonly struct QuestContext
+{
+    [FieldOffset(0x0000)]
+    public readonly uint QuestId;
+
+    [FieldOffset(0x0014)]
+    public readonly uint MapFrom;
+
+    [FieldOffset(0x0018)]
+    public readonly Vector3 Marker;
+
+    [FieldOffset(0x0028)]
+    public readonly uint MapTo;
+}
+
+[StructLayout(LayoutKind.Sequential, Pack = 1, Size = 0xC)]
+public readonly unsafe struct MissionObjectiveContext
+{
+    public readonly uint ObjectiveId;
+    public readonly char* EncodedString;
+    public readonly uint Type;
+}

Daybreak.API/Interop/GuildWars/ServerRegion.cs

@@ -0,0 +1,12 @@
+namespace Daybreak.API.Interop.GuildWars;
+
+public enum ServerRegion
+{
+    International = -2,
+    America = 0,
+    Korea,
+    Europe,
+    China,
+    Japan,
+    Unknown = 0xff
+}

Daybreak.API/Interop/GuildWars/Skill.cs

@@ -0,0 +1,58 @@
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+[StructLayout(LayoutKind.Sequential, Pack = 1)]
+public readonly struct SkillContext
+{
+    public readonly uint Adrenaline1;
+    public readonly uint Adrenaline2;
+    public readonly uint Recharge;
+    public readonly uint Id;
+    public readonly uint Event;
+}
+
+[StructLayout(LayoutKind.Sequential, Pack = 1, Size = 0xBC)]
+public readonly struct SkillbarContext
+{
+    public readonly uint AgentId;
+    public readonly SkillContext Skill0;
+    public readonly SkillContext Skill1;
+    public readonly SkillContext Skill2;
+    public readonly SkillContext Skill3;
+    public readonly SkillContext Skill4;
+    public readonly SkillContext Skill5;
+    public readonly SkillContext Skill6;
+    public readonly SkillContext Skill7;
+    public readonly uint Disabled;
+    public readonly uint Casting;
+}
+
+[StructLayout(LayoutKind.Explicit, Pack = 1, Size = 0x10)]
+public readonly struct Buff
+{
+    [FieldOffset(0x0000)]
+    public readonly uint SkillId;
+    [FieldOffset(0x0008)]
+    public readonly uint BuffId;
+    [FieldOffset(0x000C)]
+    public readonly uint TargetAgentId;
+}
+
+[StructLayout(LayoutKind.Sequential, Pack = 1, Size = 0x18)]
+public readonly struct Effect
+{
+    public readonly uint SkillId;
+    public readonly uint AttributeLevel;
+    public readonly uint EffectId;
+    public readonly uint AgentId;
+    public readonly float Duration;
+    public readonly uint Timestamp;
+}
+
+[StructLayout(LayoutKind.Sequential, Pack = 1)]
+public readonly struct DupeSkill
+{
+    public readonly uint SkillId;
+    public readonly uint Count;
+}

Daybreak.API/Interop/GuildWars/SkillTemplate.cs

@@ -0,0 +1,13 @@
+using System.Extensions;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+public readonly struct SkillTemplate(uint primary, uint secondary, uint attributeCount, Array12Uint attributeIds, Array12Uint attributeValues, Array8Uint skills)
+{
+    public readonly uint Primary = primary;
+    public readonly uint Secondary = secondary;
+    public readonly uint AttributesCount = attributeCount;
+    public readonly Array12Uint AttributeIds = attributeIds;
+    public readonly Array12Uint AttributeValues = attributeValues;
+    public readonly Array8Uint Skills = skills;
+}

Daybreak.API/Interop/GuildWars/TagInfo.cs

@@ -0,0 +1,12 @@
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+[StructLayout(LayoutKind.Sequential, Pack = 1)]
+public readonly struct TagInfo
+{
+    public readonly ushort GuildId;
+    public readonly byte Primary;
+    public readonly byte Secondary;
+    public readonly ushort Level;
+}

Daybreak.API/Interop/GuildWars/Title.cs

@@ -0,0 +1,40 @@
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+[Flags]
+public enum TitleProps : uint
+{
+    None = 0,
+    PercentageBased = 1,
+    HasTiers = 2
+    // Note: The HasTiers check uses (props & 3) == 2, which means bit 1 is set but bit 0 is not
+}
+
+[StructLayout(LayoutKind.Sequential, Pack = 1, Size = 40)]
+public readonly struct TitleContext
+{
+    public readonly TitleProps Props;
+    public readonly uint CurrentPoints;
+    public readonly uint CurrentTitleTierIndex;
+    public readonly uint PointsNeededForCurrentRank;
+    public readonly uint NextTitleTierIndex;
+    public readonly uint PointsNeededForNextRank;
+    public readonly uint MaxTitleRank;
+    public readonly uint MaxTitleTierIndex;
+}
+
+[StructLayout(LayoutKind.Sequential, Pack = 1, Size = 0xC)]
+public readonly unsafe struct TitleTier
+{
+    public readonly TitleProps Props;
+    public readonly uint TierNumber;
+    public readonly char* TierNameEncoded;
+}
+
+[StructLayout(LayoutKind.Sequential, Pack = 1)]
+public readonly struct TitleClientData
+{
+    public readonly uint TitleId;
+    public readonly uint NameId;
+}

Daybreak.API/Interop/GuildWars/UIAction.cs

@@ -0,0 +1,183 @@
+namespace Daybreak.API.Interop.GuildWars;
+
+public enum UIAction : uint
+{
+    None = 0,
+    Screenshot = 0xAE,
+
+    // Panels
+    CloseAllPanels = 0x85,
+    ToggleInventoryWindow = 0x8B,
+    OpenScoreChart = 0xBD,
+    OpenTemplateManager = 0xD3,
+    OpenSaveEquipmentTemplate = 0xD4,
+    OpenSaveSkillTemplate = 0xD5,
+    OpenParty = 0xBF,
+    OpenGuild = 0xBA,
+    OpenFriends = 0xB9,
+    ToggleAllBags = 0xB8,
+    OpenMissionMap = 0xB6,
+    OpenBag2 = 0xB5,
+    OpenBag1 = 0xB4,
+    OpenBelt = 0xB3,
+    OpenBackpack = 0xB2,
+    OpenSkillsAndAttributes = 0x8F,
+    OpenQuestLog = 0x8E,
+    OpenWorldMap = 0x8C,
+    OpenOptions = 0x8D,
+    OpenHero = 0x8A,
+
+    // Weapon sets
+    CycleEquipment = 0x86,
+    ActivateWeaponSet1 = 0x81,
+    ActivateWeaponSet2,
+    ActivateWeaponSet3,
+    ActivateWeaponSet4,
+
+    DropItem = 0xCD, // drops bundle item >> flags, ashes, etc
+
+    // Chat
+    CharReply = 0xBE,
+    OpenChat = 0xA1,
+    OpenAlliance = 0x88,
+
+    ReverseCamera = 0x90,
+    StrafeLeft = 0x91,
+    StrafeRight = 0x92,
+    TurnLeft = 0xA2,
+    TurnRight = 0xA3,
+    MoveBackward = 0xAC,
+    MoveForward = 0xAD,
+    CancelAction = 0xAF,
+    Interact = 0x80,
+    ReverseDirection = 0xB1,
+    Autorun = 0xB7,
+    Follow = 0xCC,
+
+    // Targeting
+    TargetPartyMember1 = 0x96,
+    TargetPartyMember2,
+    TargetPartyMember3,
+    TargetPartyMember4,
+    TargetPartyMember5,
+    TargetPartyMember6,
+    TargetPartyMember7,
+    TargetPartyMember8,
+    TargetPartyMember9 = 0xC6,
+    TargetPartyMember10,
+    TargetPartyMember11,
+    TargetPartyMember12,
+
+    TargetNearestItem = 0xC3,
+    TargetNextItem = 0xC4,
+    TargetPreviousItem = 0xC5,
+    TargetPartyMemberNext = 0xCA,
+    TargetPartyMemberPrevious = 0xCB,
+    TargetAllyNearest = 0xBC,
+    ClearTarget = 0xE3,
+    TargetSelf = 0xA0, // also 0x96
+    TargetPriorityTarget = 0x9F,
+    TargetNearestEnemy = 0x93,
+    TargetNextEnemy = 0x95,
+    TargetPreviousEnemy = 0x9E,
+
+    ShowOthers = 0x89,
+    ShowTargets = 0x94,
+
+    CameraZoomIn = 0xCE,
+    CameraZoomOut = 0xCF,
+
+    // Party/Hero commands
+    ClearPartyCommands = 0xDB,
+    CommandParty = 0xD6,
+    CommandHero1,
+    CommandHero2,
+    CommandHero3,
+    CommandHero4 = 0x102,
+    CommandHero5,
+    CommandHero6,
+    CommandHero7,
+
+    OpenHero1PetCommander = 0xE0,
+    OpenHero2PetCommander,
+    OpenHero3PetCommander,
+    OpenHero4PetCommander = 0xFE,
+    OpenHero5PetCommander,
+    OpenHero6PetCommander,
+    OpenHero7PetCommander,
+    OpenHeroCommander1 = 0xDC,
+    OpenHeroCommander2,
+    OpenHeroCommander3,
+    OpenPetCommander,
+    OpenHeroCommander4 = 0x126,
+    OpenHeroCommander5,
+    OpenHeroCommander6,
+    OpenHeroCommander7,
+
+    Hero1Skill1 = 0xE5,
+    Hero1Skill2,
+    Hero1Skill3,
+    Hero1Skill4,
+    Hero1Skill5,
+    Hero1Skill6,
+    Hero1Skill7,
+    Hero1Skill8,
+    Hero2Skill1,
+    Hero2Skill2,
+    Hero2Skill3,
+    Hero2Skill4,
+    Hero2Skill5,
+    Hero2Skill6,
+    Hero2Skill7,
+    Hero2Skill8,
+    Hero3Skill1,
+    Hero3Skill2,
+    Hero3Skill3,
+    Hero3Skill4,
+    Hero3Skill5,
+    Hero3Skill6,
+    Hero3Skill7,
+    Hero3Skill8,
+    Hero4Skill1 = 0x106,
+    Hero4Skill2,
+    Hero4Skill3,
+    Hero4Skill4,
+    Hero4Skill5,
+    Hero4Skill6,
+    Hero4Skill7,
+    Hero4Skill8,
+    Hero5Skill1,
+    Hero5Skill2,
+    Hero5Skill3,
+    Hero5Skill4,
+    Hero5Skill5,
+    Hero5Skill6,
+    Hero5Skill7,
+    Hero5Skill8,
+    Hero6Skill1,
+    Hero6Skill2,
+    Hero6Skill3,
+    Hero6Skill4,
+    Hero6Skill5,
+    Hero6Skill6,
+    Hero6Skill7,
+    Hero6Skill8,
+    Hero7Skill1,
+    Hero7Skill2,
+    Hero7Skill3,
+    Hero7Skill4,
+    Hero7Skill5,
+    Hero7Skill6,
+    Hero7Skill7,
+    Hero7Skill8,
+
+    // Skills
+    UseSkill1 = 0xA4,
+    UseSkill2,
+    UseSkill3,
+    UseSkill4,
+    UseSkill5,
+    UseSkill6,
+    UseSkill7,
+    UseSkill8
+};

Daybreak.API/Interop/GuildWars/Uuid.cs

@@ -0,0 +1,108 @@
+using System.Globalization;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+public readonly struct Uuid(
+    uint timeLow,
+    ushort timeMid,
+    ushort timeHighAndVersion,
+    byte clockSqHi,
+    byte clockSqLow,
+    byte node0,
+    byte node1,
+    byte node2,
+    byte node3,
+    byte node4,
+    byte node5) : IEquatable<Uuid>
+{
+    public const uint NodeLength = 6;
+
+    public readonly uint TimeLow = timeLow;
+    public readonly ushort TimeMid = timeMid;
+    public readonly ushort TimeHighAndVersion = timeHighAndVersion;
+    public readonly byte ClockSqHiAndRes = clockSqHi;
+    public readonly byte ClockSqLow = clockSqLow;
+    public readonly byte Node0 = node0;
+    public readonly byte Node1 = node1;
+    public readonly byte Node2 = node2;
+    public readonly byte Node3 = node3;
+    public readonly byte Node4 = node4;
+    public readonly byte Node5 = node5;
+
+    public bool Equals(Uuid other)
+    {
+        return this.TimeLow == other.TimeLow &&
+            this.TimeMid == other.TimeMid &&
+            this.TimeHighAndVersion == other.TimeHighAndVersion &&
+            this.ClockSqHiAndRes == other.ClockSqHiAndRes &&
+            this.ClockSqLow == other.ClockSqLow &&
+            this.Node0 == other.Node0 &&
+            this.Node1 == other.Node1 &&
+            this.Node2 == other.Node2 &&
+            this.Node3 == other.Node3 &&
+            this.Node4 == other.Node4 &&
+            this.Node5 == other.Node5;
+    }
+
+    public override bool Equals(object? obj)
+    {
+        return obj is Uuid uuid && this.Equals(uuid);
+    }
+
+    public static bool operator ==(Uuid left, Uuid right)
+    {
+        return left.Equals(right);
+    }
+
+    public static bool operator !=(Uuid left, Uuid right)
+    {
+        return !(left == right);
+    }
+
+    public static bool TryParse(string uuidString, out Uuid uuid)
+    {
+        if (uuidString.Length != 36)
+        {
+            uuid = default;
+            return false;
+        }
+
+        var parts = uuidString.Split('-');
+        if (parts.Length != 5)
+        {
+            uuid = default;
+            return false;
+        }
+
+        if (!uint.TryParse(parts[0], NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var timeLow) ||
+            !ushort.TryParse(parts[1], NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var timeMid) ||
+            !ushort.TryParse(parts[2], NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var timeHighAndVersion) ||
+            !byte.TryParse(parts[3].AsSpan(0, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var clockSqHi) ||
+            !byte.TryParse(parts[3].AsSpan(2, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var clockSqLow) ||
+            !byte.TryParse(parts[4].AsSpan(0, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var node0) ||
+            !byte.TryParse(parts[4].AsSpan(2, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var node1) ||
+            !byte.TryParse(parts[4].AsSpan(4, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var node2) ||
+            !byte.TryParse(parts[4].AsSpan(6, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var node3) ||
+            !byte.TryParse(parts[4].AsSpan(8, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var node4) ||
+            !byte.TryParse(parts[4].AsSpan(10, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var node5))
+        {
+            uuid = default;
+            return false;
+        }
+
+        uuid = new Uuid(timeLow, timeMid, timeHighAndVersion, clockSqHi, clockSqLow, node0, node1, node2, node3, node4, node5);
+        return true;
+    }
+
+    public override int GetHashCode()
+    {
+        return HashCode.Combine<uint, ushort, ushort, byte, byte, byte[]>(this.TimeLow, this.TimeMid, this.TimeHighAndVersion, this.ClockSqHiAndRes, this.ClockSqLow, [this.Node0, this.Node1, this.Node2, this.Node3, this.Node4, this.Node5]);
+    }
+
+    public override string ToString()
+    {
+        return $"{this.TimeLow:X8}-{this.TimeMid:X4}-{this.TimeHighAndVersion:X4}-{this.ClockSqHiAndRes:X2}{this.ClockSqLow:X2}-{this.Node0:X2}{this.Node1:X2}{this.Node2:X2}{this.Node3:X2}{this.Node4:X2}{this.Node5:X2}";
+    }
+
+    public readonly static Uuid Zero = new(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
+}

Daybreak.API/Interop/GuildWars/WorldContext.cs

@@ -0,0 +1,173 @@
+using System.Numerics;
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop.GuildWars;
+
+[StructLayout(LayoutKind.Explicit, Pack = 1)]
+public readonly unsafe struct WorldContext
+{
+    [FieldOffset(0x0000)]
+    public readonly AccountInfoContext* AccountInfo;
+
+    [FieldOffset(0x0024)]
+    public readonly GuildWarsArray<uint> MerchItems;
+
+    [FieldOffset(0x0034)]
+    public readonly GuildWarsArray<uint> MerchItems2;
+
+    [FieldOffset(0x007C)]
+    public readonly GuildWarsArray<MapAgentContext> MapAgents;
+
+    [FieldOffset(0x009C)]
+    public readonly Vector3 AllFlag;
+
+    [FieldOffset(0x00AC)]
+    public readonly GuildWarsArray<PartyAttribute> Attributes;
+
+    [FieldOffset(0x0508)]
+    public readonly GuildWarsArray<AgentEffects> PartyEffects;
+
+    [FieldOffset(0x0528)]
+    public readonly uint ActiveQuestId;
+
+    [FieldOffset(0x052C)]
+    public readonly GuildWarsArray<QuestContext> QuestLog;
+
+    [FieldOffset(0x0564)]
+    public readonly GuildWarsArray<MissionObjectiveContext> MissionObjectives;
+
+    [FieldOffset(0x0574)]
+    public readonly GuildWarsArray<uint> HenchmenAgentIds;
+
+    [FieldOffset(0x0584)]
+    public readonly GuildWarsArray<HeroFlag> HeroFlags;
+
+    [FieldOffset(0x0594)]
+    public readonly GuildWarsArray<HeroInfo> HeroInfos;
+
+    [FieldOffset(0x05A4)]
+    public readonly GuildWarsArray<nuint> CartographedAreas;
+
+    [FieldOffset(0x05BC)]
+    public readonly GuildWarsArray<ControlledMinion> ControlledMinions;
+
+    [FieldOffset(0x05CC)]
+    public readonly GuildWarsArray<uint> MissionsCompleted;
+
+    [FieldOffset(0x05DC)]
+    public readonly GuildWarsArray<uint> MissionsBonus;
+
+    [FieldOffset(0x05EC)]
+    public readonly GuildWarsArray<uint> MissionsCompletedHardMode;
+
+    [FieldOffset(0x05FC)]
+    public readonly GuildWarsArray<uint> MissionsBonusHardMode;
+
+    [FieldOffset(0x060C)]
+    public readonly GuildWarsArray<uint> UnlockedMap;
+
+    [FieldOffset(0x062C)]
+    public readonly GuildWarsArray<PartyMoraleContext> PartyMorale;
+
+    [FieldOffset(0x067C)]
+    public readonly uint PlayerNumber;
+
+    [FieldOffset(0x0680)]
+    public readonly PlayerControlledCharContext* PlayerControlledChar;
+
+    [FieldOffset(0x0684)]
+    public readonly uint HardModeUnlocked;
+
+    [FieldOffset(0x06AC)]
+    public readonly GuildWarsArray<PetContext> Pets;
+
+    [FieldOffset(0x06BC)]
+    public readonly GuildWarsArray<ProfessionsContext> Professions;
+
+    [FieldOffset(0x06F0)]
+    public readonly GuildWarsArray<SkillbarContext> Skillbars;
+
+    [FieldOffset(0x0700)]
+    public readonly GuildWarsArray<uint> LearnableCharacterSkills;
+
+    [FieldOffset(0x0710)]
+    public readonly GuildWarsArray<uint> UnlockedCharacterSkills;
+
+    [FieldOffset(0x0720)]
+    public readonly GuildWarsArray<DupeSkill> DupeSkills;
+
+    [FieldOffset(0x0740)]
+    public readonly uint Experience;
+
+    [FieldOffset(0x0748)]
+    public readonly uint CurrentKurzick;
+
+    [FieldOffset(0x0750)]
+    public readonly uint TotalKurzick;
+
+    [FieldOffset(0x0758)]
+    public readonly uint CurrentLuxon;
+
+    [FieldOffset(0x0760)]
+    public readonly uint TotalLuxon;
+
+    [FieldOffset(0x0768)]
+    public readonly uint CurrentImperial;
+
+    [FieldOffset(0x0770)]
+    public readonly uint TotalImperial;
+
+    [FieldOffset(0x0788)]
+    public readonly uint Level;
+
+    [FieldOffset(0x0790)]
+    public readonly uint Morale;
+
+    [FieldOffset(0x0798)]
+    public readonly uint CurrentBalthazar;
+
+    [FieldOffset(0x07A0)]
+    public readonly uint TotalBalthazar;
+
+    [FieldOffset(0x07A8)]
+    public readonly uint CurrentSkillPoints;
+
+    [FieldOffset(0x07B0)]
+    public readonly uint TotalSkillPoints;
+
+    [FieldOffset(0x07B8)]
+    public readonly uint MaxKurzick;
+
+    [FieldOffset(0x07BC)]
+    public readonly uint MaxLuxon;
+
+    [FieldOffset(0x07C0)]
+    public readonly uint MaxBalthazar;
+
+    [FieldOffset(0x07C4)]
+    public readonly uint MaxImperial;
+
+    [FieldOffset(0x07CC)]
+    public readonly GuildWarsArray<AgentInfo> AgentInfos;
+
+    [FieldOffset(0x07FC)]
+    public readonly GuildWarsArray<NpcContext> Npcs;
+
+    [FieldOffset(0x080C)]
+    public readonly GuildWarsArray<PlayerContext> Players;
+
+    [FieldOffset(0x081C)]
+    public readonly GuildWarsArray<TitleContext> Titles;
+
+    [FieldOffset(0x082C)]
+    public readonly GuildWarsArray<TitleTier> TitleTiers;
+
+    [FieldOffset(0x083C)]
+    public readonly GuildWarsArray<uint> VanquishedAreas;
+
+    [FieldOffset(0x084C)]
+    public readonly uint FoesKilled;
+
+    [FieldOffset(0x0850)]
+    public readonly uint FoesToKill;
+}

Daybreak.API/Interop/GuildWars/WrappedPointer.cs

@@ -0,0 +1,37 @@
+namespace Daybreak.API.Interop.GuildWars;
+
+public readonly unsafe struct WrappedPointer<T>(T* pointer)
+    where T : unmanaged
+{
+    public readonly T* Pointer = pointer;
+
+    public bool IsNull => this.Pointer is null;
+
+    public static implicit operator WrappedPointer<T>(T* pointer) => new(pointer);
+
+    public static implicit operator T*(WrappedPointer<T> wrappedPointer) => wrappedPointer.Pointer;
+
+    public static bool operator ==(T* left, WrappedPointer<T> right) => left == right.Pointer;
+
+    public static bool operator !=(T* left, WrappedPointer<T> right) => left != right.Pointer;
+
+    public static bool operator ==(WrappedPointer<T> left, T* right) => left.Pointer == right;
+
+    public static bool operator !=(WrappedPointer<T> left, T* right) => left.Pointer != right;
+
+    public static bool operator ==(WrappedPointer<T> left, WrappedPointer<T> right) => left.Pointer == right.Pointer;
+
+    public static bool operator !=(WrappedPointer<T> left, WrappedPointer<T> right) => left.Pointer != right.Pointer;
+
+    public override int GetHashCode() => this.Pointer is null ? 0 : this.Pointer->GetHashCode();
+
+    public override bool Equals(object? obj)
+    {
+        if (obj is WrappedPointer<T> wrappedPointer)
+        {
+            return this.Pointer == wrappedPointer.Pointer;
+        }
+
+        return false;
+    }
+}

Daybreak.API/Interop/IHook.cs

@@ -0,0 +1,9 @@
+namespace Daybreak.API.Interop;
+
+public interface IHook<T>
+    : IDisposable where T : Delegate
+{
+    public T Continue { get; }
+
+    public nuint ContinueAddress { get; }
+}

Daybreak.API/Interop/ManagedFrame.cs

@@ -0,0 +1,19 @@
+using Daybreak.API.Interop.GuildWars;
+
+namespace Daybreak.API.Interop;
+
+public readonly struct ManagedFrame(
+    WrappedPointer<Frame> frame,
+    Action closeFrame) : IDisposable
+{
+    private readonly Action closeFrame = closeFrame;
+
+    public static ManagedFrame Null => new(null, () => { });
+
+    public readonly WrappedPointer<Frame> Frame = frame;
+
+    public void Dispose()
+    {
+        this.closeFrame();
+    }
+}

Daybreak.API/Interop/MemoryPackExtensions.cs

@@ -0,0 +1,31 @@
+using MemoryPack;
+using System.Buffers;
+
+namespace Daybreak.API.Interop;
+
+public static class MemoryPackExtensions
+{
+    /// <summary>Serialize <paramref name="value"/> into <paramref name="destination"/>.</summary>
+    /// <returns>Number of bytes written.</returns>
+    public static int SerializeToSpan<T>(T value, Span<byte> destination)
+    {
+        var dummy = DummyBufferWriter.Instance;
+
+        using var state = MemoryPackWriterOptionalStatePool.Rent(null);
+
+        var writer = new MemoryPackWriter<DummyBufferWriter>(ref dummy, destination, state);
+
+        writer.WriteValue(value);
+        writer.Flush();
+
+        return writer.WrittenCount;
+    }
+
+    private sealed class DummyBufferWriter : IBufferWriter<byte>
+    {
+        public static readonly DummyBufferWriter Instance = new();
+        public void Advance(int count) { /* ignore – we never overflow destination */ }
+        public Memory<byte> GetMemory(int sizeHint = 0) => throw new NotSupportedException();
+        public Span<byte> GetSpan(int sizeHint = 0) => throw new NotSupportedException();
+    }
+}

Daybreak.API/Interop/PointerValue.cs

@@ -0,0 +1,78 @@
+using Daybreak.API.Converters;
+using System.Text.Json.Serialization;
+
+namespace Daybreak.API.Interop;
+
+[JsonConverter(typeof(PointerValueConverter))]
+public readonly struct PointerValue(nuint address) : IEquatable<PointerValue>, IEquatable<nuint>, IEquatable<nint>
+{
+    public readonly nuint Address = address;
+
+    public bool Equals(PointerValue other)
+    {
+        return this.Address.Equals(other.Address);
+    }
+
+    public bool Equals(nuint other)
+    {
+        return this.Address.Equals(other);
+    }
+
+    public bool Equals(nint other)
+    {
+        return this.Address.Equals((nuint)other);
+    }
+
+    public override string ToString()
+    {
+        return $"0x{this.Address:X8}";
+    }
+
+    public override bool Equals(object? obj) => obj is PointerValue value && this.Equals(value);
+
+    public override int GetHashCode()
+    {
+        return HashCode.Combine(this.Address);
+    }
+
+    public static bool operator ==(PointerValue left, PointerValue right)
+    {
+        return left.Equals(right);
+    }
+
+    public static bool operator !=(PointerValue left, PointerValue right)
+    {
+        return !(left == right);
+    }
+
+    public static implicit operator PointerValue(nuint address)
+    {
+        return new PointerValue(address);
+    }
+
+    public static implicit operator PointerValue(nint address)
+    {
+        return new PointerValue((nuint)address);
+    }
+
+    public static implicit operator PointerValue(int address)
+    {
+        return new PointerValue((nuint)address);
+    }
+
+    public static implicit operator PointerValue(uint address)
+    {
+        return new PointerValue(address);
+    }
+
+    public static PointerValue Parse(string s)
+    {
+        if (s.StartsWith("0x", StringComparison.InvariantCultureIgnoreCase)
+            && nuint.TryParse(s.AsSpan(2), System.Globalization.NumberStyles.HexNumber, null, out var v))
+        {
+            return new PointerValue(v);
+        }
+
+        throw new FormatException($"Invalid pointer format: {s}");
+    }
+}

Daybreak.API/Interop/UnmanagedStruct.cs

@@ -0,0 +1,22 @@
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Interop;
+
+public sealed class UnmanagedStruct<T> : IDisposable
+    where T : struct
+{
+    public nint Address { get; private set; }
+
+    public UnmanagedStruct(T value)
+    {
+        this.Address = Marshal.AllocHGlobal(Marshal.SizeOf<T>());
+        Marshal.StructureToPtr(value, this.Address, false);
+    }
+
+    public void Dispose()
+    {
+        Marshal.DestroyStructure<T>(this.Address);
+        Marshal.FreeHGlobal(this.Address);
+        this.Address = 0x0;
+    }
+}

Daybreak.API/Logging/LoggingEnrichmentMiddleware.cs

@@ -0,0 +1,29 @@
+using Microsoft.CorrelationVector;
+using Microsoft.Extensions.Options;
+using Net.Sdk.Web;
+using Net.Sdk.Web.Options;
+using Serilog.Context;
+
+namespace Daybreak.API.Logging;
+
+public sealed class LoggingEnrichmentMiddleware(IOptions<CorrelationVectorOptions> options)
+    : IMiddleware
+{
+    private readonly CorrelationVectorOptions options = options.Value;
+
+    public Task InvokeAsync(HttpContext context, RequestDelegate next)
+    {
+        if (!context.Request.Headers.TryGetValue(this.options.Header, out var value) ||
+            value.FirstOrDefault() is not string cvString ||
+            CorrelationVector.Parse(cvString) is not CorrelationVector cv)
+        {
+            cv = new CorrelationVector();
+        }
+
+        cv = CorrelationVector.Extend(cv.ToString());
+        context.SetCorrelationVector(cv);
+        LogContext.PushProperty("CorrelationVector", cv);
+        HeaderDictionaryExtensions.Append(context.Response.Headers, this.options.Header, context.GetCorrelationVector().ToString());
+        return next(context);
+    }
+}

Daybreak.API/Logging/WebApplicationBuilderExtensions.cs

@@ -0,0 +1,31 @@
+using Serilog.Settings.Configuration;
+using Serilog.Sinks.SystemConsole.Themes;
+using Serilog;
+using Net.Sdk.Web.Options;
+
+namespace Daybreak.API.Logging;
+
+public static class WebApplicationBuilderExtensions
+{
+    public static WebApplicationBuilder WithLogging(this WebApplicationBuilder builder)
+    {
+        builder.Logging.ClearProviders();
+        builder.Logging.AddSerilog(new LoggerConfiguration()
+            .ReadFrom.Configuration(builder.Configuration, new ConfigurationReaderOptions
+            {
+                SectionName = "Logging"
+            })
+            .Enrich.FromLogContext()
+            .WriteTo.Console(
+                outputTemplate: "[{Timestamp:yyyy-MM-dd HH:mm:ss}] {Level:u4}: [{SourceContext}] [{CorrelationVector}] {NewLine}{Message:lj}{NewLine}{Exception}",
+                theme: AnsiConsoleTheme.Sixteen)
+            .WriteTo.File(
+                outputTemplate: "[{Timestamp:yyyy-MM-dd HH:mm:ss}] {Level:u4}: [{SourceContext}] [{CorrelationVector}] {NewLine}{Message:lj}{NewLine}{Exception}",
+                path: "Daybreak.API.log")
+            .CreateLogger());
+        builder.Services.AddScoped<LoggingEnrichmentMiddleware>();
+        builder.Services.AddOptions<CorrelationVectorOptions>()
+            .Bind(builder.Configuration.GetSection("Correlation"));
+        return builder;
+    }
+}

Daybreak.API/Logging/WebApplicationExtensions.cs

@@ -0,0 +1,10 @@
+namespace Daybreak.API.Logging;
+
+public static class WebApplicationExtensions
+{
+    public static WebApplication UseLogging(this WebApplication app)
+    {
+        app.UseMiddleware<LoggingEnrichmentMiddleware>();
+        return app;
+    }
+}

Daybreak.API/Models/AddressState.cs

@@ -0,0 +1,9 @@
+using Daybreak.API.Interop;
+
+namespace Daybreak.API.Models;
+
+public sealed class AddressState
+{
+    public required string Name { get; init; }
+    public required PointerValue Address { get; init; }
+}

Daybreak.API/Models/AsyncRefreshCache.cs

@@ -0,0 +1,38 @@
+using System.Core.Extensions;
+using System.Extensions;
+
+namespace Daybreak.API.Models;
+
+public sealed class AsyncRefreshCache<T>(TimeSpan refreshRate, Func<CancellationToken, ValueTask<T>> refreshFunc)
+{
+    private readonly Func<CancellationToken, ValueTask<T>> refreshFunc = refreshFunc.ThrowIfNull();
+    
+    private readonly SemaphoreSlim semaphoreSlim = new(1);
+    
+    private T? cache;
+    private DateTime lastUpdateDateTime = DateTime.MinValue;
+    private TimeSpan refreshRate = refreshRate;
+
+    public async ValueTask<T> GetAsync(CancellationToken cancellationToken)
+    {
+        if (this.cache is not null && DateTime.UtcNow - this.lastUpdateDateTime < this.refreshRate)
+        {
+            return this.cache;
+        }
+
+        using var ctx = await this.semaphoreSlim.Acquire(cancellationToken);
+        if (DateTime.UtcNow - this.lastUpdateDateTime > this.refreshRate ||
+            this.cache is null)
+        {
+            this.lastUpdateDateTime = DateTime.UtcNow;
+            this.cache = await this.refreshFunc(cancellationToken);
+        }
+
+        return this.cache;
+    }
+
+    public void UpdateRefreshRate(TimeSpan newRefreshRate)
+    {
+        this.refreshRate = newRefreshRate;
+    }
+}

Daybreak.API/Models/ByteConsumerEntry.cs

@@ -0,0 +1,23 @@
+using System.Core.Extensions;
+
+namespace Daybreak.API.Models;
+
+public sealed class ByteConsumerEntry(
+    Guid id, TimeSpan freq, Action<ReadOnlySpan<byte>> handler)
+{
+    private readonly Action<ReadOnlySpan<byte>> handler = handler.ThrowIfNull();
+
+    private DateTimeOffset lastConsume = DateTimeOffset.MinValue;
+
+    public Guid Id { get; } = id;
+    public TimeSpan Frequency { get; } = freq;
+
+    public void TryConsume(DateTimeOffset currentTime, ReadOnlySpan<byte> value)
+    {
+        if (currentTime - this.lastConsume >= this.Frequency)
+        {
+            this.handler(value);
+            this.lastConsume = currentTime;
+        }
+    }
+}

Daybreak.API/Models/CallbackRegistration.cs

@@ -0,0 +1,14 @@
+using System.Core.Extensions;
+
+namespace Daybreak.API.Models;
+
+public sealed class CallbackRegistration(Guid uid, Action onDispose) : IDisposable
+{
+    private readonly Guid uid = uid;
+    private readonly Action onDispose = onDispose.ThrowIfNull();
+
+    public void Dispose()
+    {
+        this.onDispose();
+    }
+}

Daybreak.API/Models/Channel.cs

@@ -0,0 +1,24 @@
+namespace Daybreak.API.Models;
+
+public enum Channel : uint
+{
+    Alliance = 0,
+    Allies = 1, // coop with two groups for instance.
+    GWCA1 = 2,
+    All = 3,
+    GWCA2 = 4,
+    Moderator = 5,
+    Emote = 6,
+    Warning = 7, // shows in the middle of the screen and does not parse <c> tags
+    GWCA3 = 8,
+    Guild = 9,
+    Global = 10,
+    Group = 11,
+    Trade = 12,
+    Advisory = 13,
+    Whisper = 14,
+    Count,
+
+    // non-standard channel, but useful.
+    Command
+};

Daybreak.API/Models/HealthCheckEntryResponse.cs

@@ -0,0 +1,14 @@
+using Microsoft.Extensions.Diagnostics.HealthChecks;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace Daybreak.API.Models;
+
+public sealed class HealthCheckEntryResponse
+{
+    [JsonConverter(typeof(JsonStringEnumConverter<HealthStatus>))]
+    public required HealthStatus Status { get; set; }
+    public required string Description { get; set; }
+    public required Dictionary<string, JsonElement> Data { get; set; }
+    public required List<string> Tags { get; set; }
+}

Daybreak.API/Models/HealthCheckResponse.cs

@@ -0,0 +1,12 @@
+using Microsoft.Extensions.Diagnostics.HealthChecks;
+using System.Text.Json.Serialization;
+
+namespace Daybreak.API.Models;
+
+public sealed class HealthCheckResponse
+{
+    [JsonConverter(typeof(JsonStringEnumConverter<HealthStatus>))]
+    public required HealthStatus Status { get; set; }
+    public required TimeSpan TotalDuration { get; set; }
+    public required Dictionary<string, HealthCheckEntryResponse> Entries { get; set; }
+}

Daybreak.API/Models/HookState.cs

@@ -0,0 +1,12 @@
+using Daybreak.API.Interop;
+
+namespace Daybreak.API.Models;
+
+public sealed class HookState
+{
+    public required bool Hooked { get; init; }
+    public required string Name { get; init; }
+    public required PointerValue TargetAddress { get; init; }
+    public required PointerValue ContinueAddress { get; init; }
+    public required PointerValue DetourAddress { get; init; }
+}

Daybreak.API/Models/IWorkItem.cs

@@ -0,0 +1,9 @@
+namespace Daybreak.API.Models;
+
+public interface IWorkItem
+{
+    CancellationToken CancellationToken { get; }
+    void Execute();
+    void Cancel();
+    void Exception(Exception ex);
+}

Daybreak.API/Models/UIMessage.cs

@@ -0,0 +1,154 @@
+namespace Daybreak.API.Models;
+
+public enum UIMessage : uint
+{
+    None = 0x0,
+    Resize = 0x8,
+    InitFrame = 0x9,
+    DestroyFrame = 0xb,
+    KeyDown = 0x1e, // wparam = UIPacket::kKeyAction*
+    KeyUp = 0x20, // wparam = UIPacket::kKeyAction*
+    MouseClick = 0x22, // wparam = UIPacket::kMouseClick*
+    MouseClick2 = 0x2e, // wparam = UIPacket::kMouseAction*
+    MouseAction = 0x2f, // wparam = UIPacket::kMouseAction*
+    SetLayout = 0x33,
+    FrameMessage_0x47 = 0x47, // Multiple uses depending on frame
+    UpdateAgentEffects = 0x10000000 | 0x9,
+    RerenderAgentModel = 0x10000000 | 0x7, // wparam = uint32_t agent_id
+    AgentSpeechBubble = 0x10000000 | 0x17,
+    ShowAgentNameTag = 0x10000000 | 0x19, // wparam = AgentNameTagInfo*
+    HideAgentNameTag = 0x10000000 | 0x1A,
+    SetAgentNameTagAttribs = 0x10000000 | 0x1B, // wparam = AgentNameTagInfo*
+    ChangeTarget = 0x10000000 | 0x20, // wparam = UIPacket::kChangeTarget*
+    AgentStartCasting = 0x10000000 | 0x27, // wparam = UIPacket::kAgentStartCasting*
+    ShowMapEntryMessage = 0x10000000 | 0x29, // wparam = { wchar_t* title, wchar_t* subtitle }
+    SetCurrentPlayerData = 0x10000000 | 0x2A, // fired after setting the worldcontext player name
+    PostProcessingEffect = 0x10000000 | 0x34, // Triggered when drunk. wparam = UIPacket::kPostProcessingEffect
+    HeroAgentAdded = 0x10000000 | 0x38, // hero assigned to agent/inventory/ai mode
+    HeroDataAdded = 0x10000000 | 0x39, // hero info received from server (name, level etc)
+    ShowXunlaiChest = 0x10000000 | 0x40,
+    MinionCountUpdated = 0x10000000 | 0x46,
+    MoraleChange = 0x10000000 | 0x47, // wparam = {agent id, morale percent }
+    LoginStateChanged = 0x10000000 | 0x50, // wparam = {bool is_logged_in, bool unk }
+    EffectAdd = 0x10000000 | 0x55, // wparam = {agent_id, GW::Effect*}
+    EffectRenew = 0x10000000 | 0x56, // wparam = GW::Effect*
+    EffectRemove = 0x10000000 | 0x57, // wparam = effect id
+    SkillActivated = 0x10000000 | 0x5b, // wparam ={ uint32_t agent_id , uint32_t skill_id }
+    UpdateSkillbar = 0x10000000 | 0x5E, // wparam ={ uint32_t agent_id , ... }
+    UpdateSkillsAvailable = 0x10000000 | 0x5f, // Triggered on a skill unlock, profession change or map load
+    TitleProgressUpdated = 0x10000000 | 0x65, // wparam = title_id
+    ExperienceGained = 0x10000000 | 0x66, // wparam = experience amount
+    WriteToChatLog = 0x10000000 | 0x7E, // wparam = UIPacket::kWriteToChatLog*. Triggered by the game when it wants to add a new message to chat.
+    WriteToChatLogWithSender = 0x10000000 | 0x7f, // wparam = UIPacket::kWriteToChatLogWithSender*. Triggered by the game when it wants to add a new message to chat.
+    AllyOrGuildMessage = 0x10000000 | 0x80, // wparam = UIPacket::kAllyOrGuildMessage*
+    PlayerChatMessage = 0x10000000 | 0x81, // wparam = UIPacket::kPlayerChatMessage*
+    FloatingWindowMoved = 0x10000000 | 0x83, // wparam = frame_id
+    FriendUpdated = 0x10000000 | 0x89, // wparam = { GW::Friend*, ... }
+    MapLoaded = 0x10000000 | 0x8A,
+    OpenWhisper = 0x10000000 | 0x90, // wparam = wchar* name
+    Logout = 0x10000000 | 0x9b, // wparam = { bool unknown, bool character_select }
+    CompassDraw = 0x10000000 | 0x9c, // wparam = UIPacket::kCompassDraw*
+    OnScreenMessage = 0x10000000 | 0xA0, // wparam = wchar_** encoded_string
+    DialogBody = 0x10000000 | 0xA4, // wparam = DialogBodyInfo*
+    DialogButton = 0x10000000 | 0xA1, // wparam = DialogButtonInfo*
+    TargetNPCPartyMember = 0x10000000 | 0xB1, // wparam = { uint32_t unk, uint32_t agent_id }
+    TargetPlayerPartyMember = 0x10000000 | 0xB2, // wparam = { uint32_t unk, uint32_t player_number }
+    VendorWindow = 0x10000000 | 0xB3, // wparam = UIPacket::kVendorWindow
+    VendorItems = 0x10000000 | 0xB7, // wparam = UIPacket::kVendorItems
+    VendorTransComplete = 0x10000000 | 0xB9, // wparam = *TransactionType
+    VendorQuote = 0x10000000 | 0xBB, // wparam = UIPacket::kVendorQuote
+    StartMapLoad = 0x10000000 | 0xC0, // wparam = { uint32_t map_id, ...}
+    WorldMapUpdated = 0x10000000 | 0xC5, // Triggered when an area in the world map has been discovered/updated
+    GuildMemberUpdated = 0x10000000 | 0xD8, // wparam = { GuildPlayer::name_ptr }
+    ShowHint = 0x10000000 | 0xDF, // wparam = { uint32_t icon_type, wchar_t* message_enc }
+    WeaponSetSwapComplete = 0x10000000 | 0xE7, // wparam = UIPacket::kWeaponSwap*
+    WeaponSetSwapCancel = 0x10000000 | 0xE8,
+    WeaponSetUpdated = 0x10000000 | 0xE9,
+    UpdateGoldCharacter = 0x10000000 | 0xEA, // wparam = { uint32_t unk, uint32_t gold_character }
+    UpdateGoldStorage = 0x10000000 | 0xEB, // wparam = { uint32_t unk, uint32_t gold_storage }
+    InventorySlotUpdated = 0x10000000 | 0xEC, // undocumented. Triggered when an item is moved into a slot
+    EquipmentSlotUpdated = 0x10000000 | 0xED, // undocumented. Triggered when an item is moved into a slot
+    InventorySlotCleared = 0x10000000 | 0xEF, // undocumented. Triggered when an item has been removed from a slot
+    EquipmentSlotCleared = 0x10000000 | 0xF0, // undocumented. Triggered when an item has been removed from a slot
+    PvPWindowContent = 0x10000000 | 0xF8,
+    PreStartSalvage = 0x10000000 | 0x100, // { uint32_t item_id, uint32_t kit_id }
+    TradePlayerUpdated = 0x10000000 | 0x103, // wparam = GW::TraderPlayer*
+    ItemUpdated = 0x10000000 | 0x104, // wparam = UIPacket::kItemUpdated*
+    MapChange = 0x10000000 | 0x10F, // wparam = map id
+    CalledTargetChange = 0x10000000 | 0x113, // wparam = { player_number, target_id }
+    ErrorMessage = 0x10000000 | 0x117, // wparam = { int error_index, wchar_t* error_encoded_string }
+    PartyHardModeChanged = 0x10000000 | 0x118, // wparam = { int is_hard_mode }
+    PartyAddHenchman = 0x10000000 | 0x119,
+    PartyRemoveHenchman = 0x10000000 | 0x11a,
+    PartyAddHero = 0x10000000 | 0x11c,
+    PartyRemoveHero = 0x10000000 | 0x11d,
+    PartyAddPlayer = 0x10000000 | 0x122,
+    PartyRemovePlayer = 0x10000000 | 0x124,
+    DisableEnterMissionBtn = 0x10000000 | 0x128, // wparam = boolean (1 = disabled, 0 = enabled)
+    ShowCancelEnterMissionBtn = 0x10000000 | 0x12b,
+    PartyDefeated = 0x10000000 | 0x12d,
+    PartySearchInviteReceived = 0x10000000 | 0x135, // wparam = UIPacket::kPartySearchInviteReceived*
+    PartySearchInviteSent = 0x10000000 | 0x137,
+    PartyShowConfirmDialog = 0x10000000 | 0x138, // wparam = UIPacket::kPartyShowConfirmDialog
+    PreferenceEnumChanged = 0x10000000 | 0x13E, // wparam = UiPacket::kPreferenceEnumChanged
+    PreferenceFlagChanged = 0x10000000 | 0x13F, // wparam = UiPacket::kPreferenceFlagChanged
+    PreferenceValueChanged = 0x10000000 | 0x140, // wparam = UiPacket::kPreferenceValueChanged
+    UIPositionChanged = 0x10000000 | 0x141, // wparam = UIPacket::kUIPositionChanged
+    QuestAdded = 0x10000000 | 0x149, // wparam = { quest_id, ... }
+    QuestDetailsChanged = 0x10000000 | 0x14A, // wparam = { quest_id, ... }
+    ClientActiveQuestChanged = 0x10000000 | 0x14C, // wparam = { quest_id, ... }. Triggered when the game requests the current quest to change
+    ServerActiveQuestChanged = 0x10000000 | 0x14E, // wparam = UIPacket::kServerActiveQuestChanged*. Triggered when the server requests the current quest to change
+    UnknownQuestRelated = 0x10000000 | 0x14F,
+    DungeonComplete = 0x10000000 | 0x151, // undocumented 
+    MissionComplete = 0x10000000 | 0x152, // undocumented
+    VanquishComplete = 0x10000000 | 0x154, // undocumented
+    ObjectiveAdd = 0x10000000 | 0x155, // wparam = UIPacket::kObjectiveAdd*
+    ObjectiveComplete = 0x10000000 | 0x156, // wparam = UIPacket::kObjectiveComplete*
+    ObjectiveUpdated = 0x10000000 | 0x157, // wparam = UIPacket::kObjectiveUpdated*
+    TradeSessionStart = 0x10000000 | 0x160, // wparam = { trade_state, player_number }
+    TradeSessionUpdated = 0x10000000 | 0x166, // no args
+    TriggerLogoutPrompt = 0x10000000 | 0x16C, // no args
+    ToggleOptionsWindow = 0x10000000 | 0x16D, // no args
+    CheckUIState = 0x10000000 | 0x170, // Undocumented
+    RedrawItem = 0x10000000 | 0x172, // wparam = uint32_t item_id
+    CloseSettings = 0x10000000 | 0x174, // Undocumented
+    ChangeSettingsTab = 0x10000000 | 0x175, // wparam = uint32_t is_interface_tab
+    GuildHall = 0x10000000 | 0x177, // wparam = gh key (uint32_t[4])
+    LeaveGuildHall = 0x10000000 | 0x179,
+    Travel = 0x10000000 | 0x17A,
+    OpenWikiUrl = 0x10000000 | 0x17B, // wparam = char* url
+    AppendMessageToChat = 0x10000000 | 0x189, // wparam = wchar_t* message
+    HideHeroPanel = 0x10000000 | 0x197, // wparam = hero_id
+    ShowHeroPanel = 0x10000000 | 0x198, // wparam = hero_id
+    GetInventoryAgentId = 0x10000000 | 0x19c, // wparam = 0, lparam = uint32_t* agent_id_out. Used to fetch which agent is selected
+    EquipItem = 0x10000000 | 0x19d, // wparam = { item_id, agent_id }
+    MoveItem = 0x10000000 | 0x19e, // wparam = { item_id, to_bag, to_slot, bool prompt }
+    InitiateTrade = 0x10000000 | 0x1A0,
+    InventoryAgentChanged = 0x10000000 | 0x1b0, // Triggered when inventory needs updating due to agent change; no args
+    OpenTemplate = 0x10000000 | 0x1B9, // wparam = GW::UI::ChatTemplate*
+
+    // GWCA Client to Server commands. Only added the ones that are used for hooks, everything else goes straight into GW
+
+    SendLoadSkillTemplate = 0x30000000 | 0x3,  // wparam = SkillbarMgr::SkillTemplate*
+    SendPingWeaponSet = 0x30000000 | 0x4,  // wparam = UIPacket::kSendPingWeaponSet*
+    SendMoveItem = 0x30000000 | 0x5,  // wparam = UIPacket::kSendMoveItem*
+    SendMerchantRequestQuote = 0x30000000 | 0x6,  // wparam = UIPacket::kSendMerchantRequestQuote*
+    SendMerchantTransactItem = 0x30000000 | 0x7,  // wparam = UIPacket::kSendMerchantTransactItem*
+    SendUseItem = 0x30000000 | 0x8,  // wparam = UIPacket::kSendUseItem*
+    SendSetActiveQuest = 0x30000000 | 0x9,  // wparam = uint32_t quest_id
+    SendAbandonQuest = 0x30000000 | 0xA, // wparam = uint32_t quest_id
+    SendChangeTarget = 0x30000000 | 0xB, // wparam = UIPacket::kSendChangeTarget* // e.g. tell the gw client to focus on a different target
+    SendCallTarget = 0x30000000 | 0x13, // wparam = { uint32_t call_type, uint32_t agent_id } // also used to broadcast morale, death penalty, "I'm following X", etc
+    SendDialog = 0x30000000 | 0x16, // wparam = dialog_id // internal use
+
+
+    StartWhisper = 0x30000000 | 0x17, // wparam = UIPacket::kStartWhisper*
+    GetSenderColor = 0x30000000 | 0x18, // wparam = UIPacket::kGetColor* // Get chat sender color depending on channel, output object passed by reference
+    GetMessageColor = 0x30000000 | 0x19, // wparam = UIPacket::kGetColor* // Get chat message color depending on channel, output object passed by reference
+    SendChatMessage = 0x30000000 | 0x1B, // wparam = UIPacket::kSendChatMessage*
+    LogChatMessage = 0x30000000 | 0x1D, // wparam = UIPacket::kLogChatMessage*. Triggered when a message wants to be added to the persistent chat log.
+    RecvWhisper = 0x30000000 | 0x1E, // wparam = UIPacket::kRecvWhisper*
+    PrintChatMessage = 0x30000000 | 0x1F, // wparam = UIPacket::kPrintChatMessage*. Triggered when a message wants to be added to the in-game chat window.
+    SendWorldAction = 0x30000000 | 0x20, // wparam = UIPacket::kSendWorldAction*
+    SetRendererValue = 0x30000000 | 0x21 // wparam = UIPacket::kSetRendererValue
+};

Daybreak.API/Models/UIPackets.cs

@@ -0,0 +1,46 @@
+using System.Runtime.InteropServices;
+
+namespace Daybreak.API.Models;
+
+public static class UIPackets
+{
+    public enum MouseButtons
+    {
+        Left = 0x0,
+        Middle = 0x1,
+        Right = 0x2
+    }
+
+    [StructLayout(LayoutKind.Sequential, Pack = 1)]
+    public readonly struct LogChatMessage(string message, Channel channel)
+    {
+        [MarshalAs(UnmanagedType.LPWStr)]
+        public readonly string Message = message;
+        public readonly Channel Channel = channel;
+    };
+
+    [StructLayout(LayoutKind.Sequential, Pack = 1)]
+    public readonly struct UIChatMessage(Channel channel, string message, Channel channel2)
+    {
+        public readonly Channel Channel = channel;
+        [MarshalAs(UnmanagedType.LPWStr)]
+        public readonly string Message = message;
+        public readonly Channel Channel2 = channel2;
+    }
+
+    [StructLayout(LayoutKind.Sequential, Pack = 1)]
+    public readonly struct KeyAction(uint key)
+    {
+        public readonly uint Key = key;
+        public readonly uint WParam = 0x4000;
+        public readonly uint LParam = 0x0006;
+    }
+
+    [StructLayout(LayoutKind.Sequential, Pack = 1)]
+    public readonly struct MouseClick(MouseButtons mouseButton, uint isDoubleClick, uint unknownTypeScreenPos)
+    {
+        public readonly MouseButtons MouseButton = mouseButton;
+        public readonly uint IsDoubleClick = isDoubleClick;
+        public readonly uint UnknownTypeScreenPos = unknownTypeScreenPos;
+    }
+}

Daybreak.API/Models/WorkItem.cs

@@ -0,0 +1,80 @@
+namespace Daybreak.API.Models;
+
+public sealed class WorkItem(
+    Action action,
+    TaskCompletionSource tcs,
+    CancellationToken token) : IWorkItem
+{
+    private readonly Action action = action;
+    private readonly TaskCompletionSource tcs = tcs;
+
+    public CancellationToken CancellationToken { get; } = token;
+
+    public void Execute()
+    {
+        if (this.CancellationToken.IsCancellationRequested)
+        {
+            this.tcs.TrySetCanceled(this.CancellationToken);
+            return;
+        }
+
+        try
+        {
+            this.action();
+            this.tcs.TrySetResult();
+        }
+        catch (Exception ex)
+        {
+            this.tcs.TrySetException(ex);
+        }
+    }
+
+    public void Cancel()
+    {
+        this.tcs.TrySetCanceled(this.CancellationToken);
+    }
+
+    public void Exception(Exception ex)
+    {
+        this.tcs.TrySetException(ex);
+    }
+}
+
+public sealed class WorkItem<T>(
+    Func<T> func,
+    TaskCompletionSource<T> tcs,
+    CancellationToken token) : IWorkItem
+{
+    private readonly Func<T> func = func;
+    private readonly TaskCompletionSource<T> tcs = tcs;
+
+    public CancellationToken CancellationToken { get; } = token;
+
+    public void Execute()
+    {
+        if (this.CancellationToken.IsCancellationRequested)
+        {
+            this.tcs.TrySetCanceled(this.CancellationToken);
+            return;
+        }
+
+        try
+        {
+            this.tcs.TrySetResult(this.func());
+        }
+        catch (Exception ex)
+        {
+            this.tcs.TrySetException(ex);
+        }
+    }
+
+    public void Cancel()
+    {
+        this.tcs.TrySetCanceled(this.CancellationToken);
+    }
+
+    public void Exception(Exception ex)
+    {
+        this.tcs.TrySetException(ex);
+    }
+}

Daybreak.API/NativeMethods.cs

@@ -2,12 +2,21 @@
 
 namespace Daybreak.API;
 
-internal static partial class NativeMethods
+internal unsafe static partial class NativeMethods
 {
     public const int STD_OUTPUT_HANDLE = -11;
     public const uint ENABLE_VIRTUAL_TERMINAL_PROCESSING = 0x0004;
     public const uint ENABLE_PROCESSED_OUTPUT = 0x0001;
 
+    public const int WM_KEYDOWN = 0x0100;
+    public const int WM_KEYUP = 0x0101;
+    public const int WM_CHAR = 0x0102;
+    public const int VK_RIGHT = 0x27;
+
+    public const uint MEM_COMMIT = 0x1000;
+    public const uint MEM_RESERVE = 0x2000;
+    public const uint PAGE_EXECUTE_READWRITE = 0x40;
+
     [LibraryImport("kernel32.dll", SetLastError = true)]
     [return: MarshalAs(UnmanagedType.Bool)]
     public static partial bool AllocConsole();
@@ -25,4 +34,18 @@ internal static partial class NativeMethods
     [LibraryImport("kernel32.dll")]
     [return: MarshalAs(UnmanagedType.Bool)]
     public static partial bool SetConsoleMode(nint hConsoleHandle, uint dwMode);
+
+    [LibraryImport("user32.dll")]
+    public static partial nint SendMessageW(nint hWnd, int Msg, nint wParam, nint lParam);
+
+    [LibraryImport("kernel32.dll", SetLastError = true)]
+    public static partial nint VirtualAlloc(
+        nint lpAddress, nuint dwSize,
+        uint flAllocationType, uint flProtect);
+
+    [LibraryImport("kernel32.dll", SetLastError = true)]
+    [return: MarshalAs(UnmanagedType.Bool)]
+    public static partial bool VirtualProtect(
+        void* lpAddress, nuint dwSize,
+        uint flNewProtect, out uint lpflOldProtect);
 }

Daybreak.API/Serialization/ApiJsonSerializerContext.cs

@@ -1,8 +1,39 @@
-using System.Text.Json.Serialization;
+using Daybreak.API.Models;
+using Daybreak.Shared.Models.Api;
+using System.Text.Json;
+using System.Text.Json.Serialization;
 
 namespace Daybreak.API.Serialization;
 
 [JsonSerializable(typeof(string))]
+[JsonSerializable(typeof(byte[]))]
+[JsonSerializable(typeof(int))]
+[JsonSerializable(typeof(uint))]
+[JsonSerializable(typeof(nuint))]
+[JsonSerializable(typeof(bool))]
+[JsonSerializable(typeof(Task<IResult>))]
+[JsonSerializable(typeof(Task))]
+[JsonSerializable(typeof(Dictionary<string, string>))]
+[JsonSerializable(typeof(List<string>))]
+[JsonSerializable(typeof(JsonElement))]
+[JsonSerializable(typeof(HealthCheckResponse))]
+[JsonSerializable(typeof(HealthCheckEntryResponse))]
+[JsonSerializable(typeof(HookState))]
+[JsonSerializable(typeof(ArraySegment<HookState>))]
+[JsonSerializable(typeof(AddressState))]
+[JsonSerializable(typeof(ArraySegment<AddressState>))]
+[JsonSerializable(typeof(MainPlayerState))]
+[JsonSerializable(typeof(QuestLogInformation))]
+[JsonSerializable(typeof(QuestInformation))]
+[JsonSerializable(typeof(MainPlayerInformation))]
+[JsonSerializable(typeof(CharacterSelectInformation))]
+[JsonSerializable(typeof(CharacterSelectEntry))]
+[JsonSerializable(typeof(BuildEntry))]
+[JsonSerializable(typeof(List<BuildEntry>))]
+[JsonSerializable(typeof(PartyLoadoutEntry))]
+[JsonSerializable(typeof(List<PartyLoadout>))]
+[JsonSerializable(typeof(InstanceInfo))]
+[JsonSerializable(typeof(TitleInfo))]
 public partial class ApiJsonSerializerContext : JsonSerializerContext
 {
 }

Daybreak.API/Serialization/WebApplicationBuilderExtensions.cs

@@ -0,0 +1,14 @@
+namespace Daybreak.API.Serialization;
+
+public static class WebApplicationBuilderExtensions
+{
+    public static WebApplicationBuilder WithSerializationContext(this WebApplicationBuilder builder)
+    {
+        builder.Services.ConfigureHttpJsonOptions(options =>
+        {
+            options.SerializerOptions.TypeInfoResolverChain.Insert(0, new ApiJsonSerializerContext());
+        });
+
+        return builder;
+    }
+}

Daybreak.API/Services/ApiAdvertisingService.cs

@@ -0,0 +1,56 @@
+using Daybreak.Shared.Models;
+using Daybreak.Shared.Services.MDns;
+using Microsoft.AspNetCore.Hosting.Server;
+using Microsoft.AspNetCore.Hosting.Server.Features;
+using System.Extensions.Core;
+
+namespace Daybreak.API.Services;
+
+public sealed class ApiAdvertisingService(
+    IServer server,
+    IMDnsService mDnsService,
+    IHostApplicationLifetime lifetime,
+    ILogger<ApiAdvertisingService> logger) : IHostedService
+{
+    private const string ProcessIdPlaceholder = "{PID}";
+    private const string ServiceName = $"daybreak-api-{ProcessIdPlaceholder}";
+    private const string ServiceSubType = "daybreak-api";
+    private readonly IServerAddressesFeature serverAddressesFeature = server.Features.Get<IServerAddressesFeature>() ?? throw new InvalidOperationException("Server does not support addresses feature.");
+    private readonly IMDnsService mDnsService = mDnsService;
+    private readonly IHostApplicationLifetime lifetime = lifetime;
+    private readonly ILogger<ApiAdvertisingService> logger = logger;
+
+    private DnsRegistrationToken? dnsToken;
+
+    public Task StartAsync(CancellationToken cancellationToken)
+    {
+        this.lifetime.ApplicationStarted.Register(this.RegisterDomain);
+        return Task.CompletedTask;
+    }
+
+    public Task StopAsync(CancellationToken cancellationToken)
+    {
+        this.dnsToken?.Dispose();
+        return Task.CompletedTask;
+    }
+
+    private void RegisterDomain()
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        var addresses = this.serverAddressesFeature?.Addresses.ToArray() ?? [];
+        var port = addresses
+            .Select(a => new Uri(a).Port)
+            .Distinct()
+            .FirstOrDefault();
+
+        scopedLogger.LogInformation("Found port {port}", port);
+        if (port is 0)
+        {
+            throw new InvalidOperationException("Unable to start advertising service. No port found");
+        }
+
+        var dnsEntry = ServiceName.Replace(ProcessIdPlaceholder, Environment.ProcessId.ToString());
+        scopedLogger.LogInformation("Advertising service {service}:{port}", dnsEntry, port);
+        this.dnsToken = this.mDnsService.RegisterDomain(dnsEntry, (ushort)port, ServiceSubType);
+    }
+}

Daybreak.API/Services/CharacterSelectService.cs

@@ -0,0 +1,313 @@
+using Daybreak.API.Services.Interop;
+using Daybreak.Shared.Models.Api;
+using System.Core.Extensions;
+using System.Extensions.Core;
+using System.Runtime.InteropServices;
+using ZLinq;
+
+namespace Daybreak.API.Services;
+
+public sealed class CharacterSelectService(
+    InstanceContextService instanceContextService,
+    PlatformContextService platformContextService,
+    UIContextService uiContextService,
+    GameThreadService gameThreadService,
+    GameContextService gameContextService,
+    ILogger<CharacterSelectService> logger)
+{
+    [StructLayout(LayoutKind.Sequential, Pack = 1)]
+    private readonly struct LogOutMessage(uint unknown, uint characterSelect)
+    {
+        public readonly uint Unknown = unknown;
+        public readonly uint CharacterSelect = characterSelect;
+    }
+
+    private readonly InstanceContextService instanceContextService = instanceContextService.ThrowIfNull();
+    private readonly PlatformContextService platformContextService = platformContextService.ThrowIfNull();
+    private readonly UIContextService uiContextService = uiContextService.ThrowIfNull();
+    private readonly GameThreadService gameThreadService = gameThreadService.ThrowIfNull();
+    private readonly GameContextService gameContextService = gameContextService.ThrowIfNull();
+    private readonly ILogger<CharacterSelectService> logger = logger.ThrowIfNull();
+
+    public Task<CharacterSelectInformation?> GetCharacterSelectInformation(CancellationToken cancellationToken)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        return this.gameThreadService.QueueOnGameThread(() =>
+        {
+            unsafe
+            {
+                var gameContext = this.gameContextService.GetGameContext();
+                if (gameContext.IsNull ||
+                    gameContext.Pointer->WorldContext is null)
+                {
+                    scopedLogger.LogError("Game context is not initialized");
+                    return default;
+                }
+
+                var availableCharsContext = this.gameContextService.GetAvailableChars();
+                if (availableCharsContext.IsNull)
+                {
+                    scopedLogger.LogError("Available characters context is not initialized");
+                    return default;
+                }
+
+                var currentUuid = gameContext.Pointer->CharContext->PlayerUuid.ToString();
+                var availableChars = new List<CharacterSelectEntry>((int)availableCharsContext.Pointer->Size);
+                foreach(var charContext in *availableCharsContext.Pointer)
+                {
+                    var nameSpan = charContext.Name.AsSpan();
+                    var name = new string(nameSpan[..nameSpan.IndexOf('\0')]);
+                    availableChars.Add(new CharacterSelectEntry(
+                        charContext.Uuid.ToString(),
+                        name,
+                        charContext.Primary,
+                        charContext.Secondary,
+                        charContext.Campaign,
+                        charContext.MapId,
+                        charContext.Level,
+                        charContext.IsPvp));
+                }
+
+                var currentCharacter = availableChars.FirstOrDefault(c => c.Uuid == currentUuid);
+                return new CharacterSelectInformation(currentCharacter, availableChars);
+            }
+        }, cancellationToken);
+    }
+
+    public async Task<bool> ChangeCharacterByName(string characterName, CancellationToken cancellationToken)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        if (await this.ValidateState(cancellationToken) is false)
+        {
+            scopedLogger.LogError("Cannot change character while in loading state");
+            return false;
+        }
+
+        await this.TriggerLogOut(cancellationToken);
+
+        var indexResult = await this.WaitForLoginScreenAndGetCurrentAndDesiredIndex(characterName, cancellationToken);
+        if (indexResult is null)
+        {
+            scopedLogger.LogError("Failed to find index by name {name}", characterName);
+            return false;
+        }
+
+        var currentIndex = indexResult.Value.CurrentIndex;
+        var desiredIndex = indexResult.Value.DesiredIndex;
+        scopedLogger.LogInformation("Changing character to {name} with index {index}", characterName, desiredIndex);
+        var navigateResult = await this.NavigateToCharAndPlay(currentIndex, desiredIndex, cancellationToken);
+        if (!navigateResult)
+        {
+            scopedLogger.LogError("Failed to navigate to character {name} with index {index}", characterName, desiredIndex);
+            return false;
+        }
+
+        return true;
+    }
+
+    public async Task<bool> ChangeCharacterByUuid(string uuid, CancellationToken cancellationToken)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        if (await this.ValidateState(cancellationToken) is false)
+        {
+            scopedLogger.LogError("Cannot change character while in loading state");
+            return false;
+        }
+
+        var desiredCharName = await this.GetCharNameByUuid(uuid, cancellationToken);
+        if (desiredCharName is null)
+        {
+            scopedLogger.LogError("Failed to find character with UUID: {uuid}", uuid);
+            return false;
+        }
+
+        await this.TriggerLogOut(cancellationToken);
+
+        var indexResult = await this.WaitForLoginScreenAndGetCurrentAndDesiredIndex(desiredCharName, cancellationToken);
+        if (indexResult is null)
+        {
+            scopedLogger.LogError("Resolved character by uuid {uuid} but failed to find index by name {name}", uuid, desiredCharName);
+            return false;
+        }
+
+        var currentIndex = indexResult.Value.CurrentIndex;
+        var desiredIndex = indexResult.Value.DesiredIndex;
+        scopedLogger.LogInformation("Changing character to {name} with index {index} and uuid {uuid}", desiredCharName, desiredIndex, uuid);
+        var navigateResult = await this.NavigateToCharAndPlay(currentIndex, desiredIndex, cancellationToken);
+        if (!navigateResult)
+        {
+            scopedLogger.LogError("Failed to navigate to character {name} with index {index} and uuid {uuid}", desiredCharName, desiredIndex, uuid);
+            return false;
+        }
+
+        return true;
+    }
+
+    private async Task<bool> ValidateState(CancellationToken cancellationToken)
+    {
+        return await this.gameThreadService.QueueOnGameThread(() =>
+        {
+            return this.instanceContextService.GetInstanceType() is not API.Interop.GuildWars.InstanceType.Loading;
+        }, cancellationToken);
+    }
+
+    private async Task<bool> NavigateToCharAndPlay(uint currentIndex, uint desiredIndex, CancellationToken cancellationToken)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        while (!cancellationToken.IsCancellationRequested)
+        {
+            await Task.Delay(100, cancellationToken);
+            var result = await this.gameThreadService.QueueOnGameThread(() =>
+            {
+                unsafe
+                {
+                    var preGameContext = this.gameContextService.GetPreGameContext();
+                    if (preGameContext.IsNull)
+                    {
+                        scopedLogger.LogError("Pre-game context is not initialized");
+                        return false;
+                    }
+
+                    var hwnd = this.platformContextService.GetWindowHandle();
+                    if (hwnd is null or 0)
+                    {
+                        scopedLogger.LogError("Failed to get window handle");
+                        return false;
+                    }
+
+                    if (preGameContext.Pointer->Index1 == currentIndex)
+                    {
+                        return false; //Not moved yet
+                    }
+
+                    if (preGameContext.Pointer->Index1 == desiredIndex)
+                    {
+                        // We're on the desired character. Trigger play
+                        NativeMethods.SendMessageW((nint)hwnd.Value, NativeMethods.WM_KEYDOWN, 0x50, 0x00190001);
+                        NativeMethods.SendMessageW((nint)hwnd.Value, NativeMethods.WM_CHAR, 0x70, 0x00190001);
+                        NativeMethods.SendMessageW((nint)hwnd.Value, NativeMethods.WM_KEYUP, 0x50, 0x00190001);
+                        return true;
+                    }
+
+                    currentIndex = preGameContext.Pointer->Index1;
+                    NativeMethods.SendMessageW((nint)hwnd.Value, NativeMethods.WM_KEYDOWN, NativeMethods.VK_RIGHT, 0x014D0001);
+                    NativeMethods.SendMessageW((nint)hwnd.Value, NativeMethods.WM_KEYUP, NativeMethods.VK_RIGHT, 0x014D0001);
+                    return false;
+                }
+            }, cancellationToken);
+
+            if (result)
+            {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    private async Task<string?> GetCharNameByUuid(string uuid, CancellationToken cancellationToken)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        return await this.gameThreadService.QueueOnGameThread(() =>
+        {
+            unsafe
+            {
+                var gameContext = this.gameContextService.GetGameContext();
+                if (gameContext.IsNull)
+                {
+                    scopedLogger.LogError("Game context is not initialized");
+                    return default;
+                }
+
+                var availableCharsContext = this.gameContextService.GetAvailableChars();
+                if (availableCharsContext.IsNull)
+                {
+                    scopedLogger.LogError("Available characters context is not initialized");
+                    return default;
+                }
+
+                foreach (var charContext in *availableCharsContext.Pointer)
+                {
+                    if (charContext.Uuid.ToString() != uuid)
+                    {
+                        continue;
+                    }
+
+                    var nameSpan = charContext.Name.AsSpan();
+                    var name = new string(nameSpan[..nameSpan.IndexOf('\0')]);
+                    return name;
+                }
+
+                return default;
+            }
+        }, cancellationToken);
+    }
+
+    private async Task TriggerLogOut(CancellationToken cancellationToken)
+    {
+        await this.gameThreadService.QueueOnGameThread(() =>
+        {
+            var logoutMessage = new LogOutMessage(0, 0);
+            unsafe
+            {
+                this.uiContextService.SendMessage(Models.UIMessage.Logout, (uint)&logoutMessage, 0);
+            }
+        }, cancellationToken);
+    }
+
+    private async Task<(uint DesiredIndex, uint CurrentIndex)?> WaitForLoginScreenAndGetCurrentAndDesiredIndex(string desiredCharName, CancellationToken cancellationToken)
+    {
+        uint? desiredIndex = default;
+        uint? currentIndex = default;
+        while (!cancellationToken.IsCancellationRequested)
+        {
+            await Task.Delay(100, cancellationToken);
+            var ready = await this.gameThreadService.QueueOnGameThread(() =>
+            {
+                unsafe
+                {
+                    var preGameContext = this.gameContextService.GetPreGameContext();
+                    if (preGameContext.IsNull)
+                    {
+                        return false;
+                    }
+
+                    var uiState = 10U;
+                    this.uiContextService.SendMessage(Models.UIMessage.CheckUIState, 0, (uint)&uiState);
+                    var loginScreen = uiState == 2;
+                    if (!loginScreen)
+                    {
+                        return false;
+                    }
+
+                    for (var i = 0U; i < preGameContext.Pointer->LoginCharacters.Size; i++)
+                    {
+                        var loginCharacter = preGameContext.Pointer->LoginCharacters.Buffer[i];
+                        var charNameSpan = loginCharacter.CharacterName.AsSpan();
+                        var charName = new string(charNameSpan[..charNameSpan.IndexOf('\0')]);
+                        if (charName == desiredCharName)
+                        {
+                            desiredIndex = i;
+                            currentIndex = 0xffffffdd;
+                            return true;
+                        }
+                    }
+
+                    return false;
+                }
+            }, cancellationToken);
+
+            if (ready)
+            {
+                break;
+            }
+        }
+
+        if (desiredIndex is not null && currentIndex is not null)
+        {
+            return (desiredIndex.Value, currentIndex.Value);
+        }
+
+        return default;
+    }
+}

Daybreak.API/Services/ChatService.cs

@@ -0,0 +1,77 @@
+using Daybreak.API.Interop;
+using Daybreak.API.Interop.GuildWars;
+using Daybreak.API.Models;
+using Daybreak.API.Services.Interop;
+using System.Core.Extensions;
+using System.Extensions;
+
+namespace Daybreak.API.Services;
+
+public sealed class ChatService(
+    InstanceContextService instanceContextService,
+    GameThreadService gameThreadService,
+    UIContextService uiContextService)
+{
+    private readonly SemaphoreSlim semaphoreSlim = new(1);
+    private readonly InstanceContextService instanceContextService = instanceContextService.ThrowIfNull();
+    private readonly GameThreadService gameThreadService = gameThreadService.ThrowIfNull();
+    private readonly UIContextService uiContextService = uiContextService.ThrowIfNull();
+
+    /// <summary>
+    /// Adds a message to the chat. It does not send the message, it only shows it to the player.
+    /// </summary>
+    public async ValueTask AddMessageAsync(string message, string? sender, Channel channel, CancellationToken cancellationToken)
+    {
+        using var ctx = await this.semaphoreSlim.Acquire(cancellationToken);
+        await this.gameThreadService.QueueOnGameThread(() =>
+        {
+            if (this.instanceContextService.GetInstanceType() is InstanceType.Loading)
+            {
+                return;
+            }
+
+            var encodedMessage = string.Create(
+                3 + message.Length,
+                message,
+                static (span, msg) =>
+                {
+                    span[0] = '\u0108';
+                    span[1] = '\u0107';
+                    msg.AsSpan().CopyTo(span[2..]);
+                    span[^1] = '\u0001';
+                });
+
+            var encodedSender = sender is not null
+            ? string.Create(
+                3 + sender.Length,
+                sender,
+                static (span, msg) =>
+                {
+                    span[0] = '\u0108';
+                    span[1] = '\u0107';
+                    msg.AsSpan().CopyTo(span[2..]);
+                    span[^1] = '\u0001';
+                })
+            : default;
+
+            var encoded = encodedSender is null
+            ? encodedMessage
+            : string.Create(
+                encodedMessage.Length + encodedSender.Length + 6,
+                (encodedMessage, encodedSender),
+                static (span, state) =>
+                {
+                    span[0] = '\u076b';
+                    span[1] = '\u010a';
+                    state.encodedSender.AsSpan().CopyTo(span[2..]);
+                    span[2 + state.encodedSender.Length] = '\u0001';
+                    span[3 + state.encodedSender.Length] = '\u010b';
+                    state.encodedMessage.AsSpan().CopyTo(span[(4 + state.encodedSender.Length)..]);
+                    span[^2] = '\u0001';
+                });
+
+            using var packet = new UnmanagedStruct<UIPackets.UIChatMessage>(new UIPackets.UIChatMessage(channel, encoded, channel));
+            this.uiContextService.SendMessage(UIMessage.WriteToChatLog, (nuint)packet.Address, 0x0);
+        }, cancellationToken);
+    }
+}

Daybreak.API/Services/Interop/AgentContextService.cs

@@ -0,0 +1,101 @@
+using Daybreak.API.Interop;
+using Daybreak.API.Interop.GuildWars;
+using Daybreak.API.Models;
+using System.Core.Extensions;
+using System.Extensions.Core;
+
+namespace Daybreak.API.Services.Interop;
+
+public unsafe sealed class AgentContextService : IAddressHealthService
+{
+    private const string AgentArrayMask = "xxxxxxx";
+    private const int AgentArrayOffset = -0x4;
+    private static readonly byte[] AgentArrayAddressPattern = [0x8b, 0x0c, 0x90, 0x85, 0xc9, 0x74, 0x19];
+
+    private const string PlayerAgentIdMask = "xx????xxxx";
+    private const int PlayerAgentIdOffset = -0xE;
+    private static readonly byte[] PlayerAgentIdAddressPattern = [0x5d, 0xe9, 0x00, 0x00, 0x00, 0x00, 0x55, 0x8b, 0xec, 0x53];
+
+    private readonly MemoryScanningService memoryScanningService;
+    private readonly GWAddressCache agentArrayAddress;
+    private readonly GWAddressCache playerAgentIdAddress;
+    private readonly ILogger<AgentContextService> logger;
+
+    public AgentContextService(
+        MemoryScanningService memoryScanningService,
+        ILogger<AgentContextService> logger)
+    {
+        this.logger = logger.ThrowIfNull();
+        this.memoryScanningService = memoryScanningService.ThrowIfNull();
+        this.agentArrayAddress = new GWAddressCache(this.GetAgentArrayAddress);
+        this.playerAgentIdAddress = new GWAddressCache(this.GetPreGameContextAddress);
+    }
+
+    public List<AddressState> GetAddressStates()
+    {
+        return [
+            new AddressState
+            {
+                Address = this.agentArrayAddress.GetAddress() ?? 0,
+                Name = nameof(this.agentArrayAddress),
+            },
+            new AddressState
+            {
+                Address = this.playerAgentIdAddress.GetAddress() ?? 0,
+                Name = nameof(this.playerAgentIdAddress),
+            },
+        ];
+    }
+
+    public WrappedPointer<GuildWarsArray<WrappedPointer<AgentContext>>> GetAgentArray()
+    {
+        var agentArrayAddress = this.agentArrayAddress.GetAddress();
+        if (agentArrayAddress is null or 0x0)
+        {
+            this.logger.LogError("Failed to get agent array address");
+            return null;
+        }
+
+        return (GuildWarsArray<WrappedPointer<AgentContext>>*)agentArrayAddress;
+    }
+
+    public uint GetPlayerAgentId()
+    {
+        var playerAgentIdAddress = this.playerAgentIdAddress.GetAddress();
+        if (playerAgentIdAddress is null or 0x0)
+        {
+            this.logger.LogError("Failed to get player agent id address");
+            return 0;
+        }
+
+        return *(uint*)playerAgentIdAddress;
+    }
+
+    private nuint GetAgentArrayAddress()
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        var address = this.memoryScanningService.FindAndResolveAddress(AgentArrayAddressPattern, AgentArrayMask, AgentArrayOffset);
+        if (address is 0)
+        {
+            scopedLogger.LogError("Failed to find agent array address");
+            return 0U;
+        }
+
+        scopedLogger.LogInformation("Agent array address: 0x{address:X8}", address);
+        return address;
+    }
+
+    private nuint GetPreGameContextAddress()
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        var address = this.memoryScanningService.FindAndResolveAddress(PlayerAgentIdAddressPattern, PlayerAgentIdMask, PlayerAgentIdOffset);
+        if (address is 0)
+        {
+            scopedLogger.LogError("Failed to find player agent id address");
+            return 0U;
+        }
+
+        scopedLogger.LogInformation("Player agent id address: 0x{address:X8}", address);
+        return address;
+    }
+}

Daybreak.API/Services/Interop/ChatHandlingService.cs

@@ -0,0 +1,85 @@
+using Daybreak.API.Interop;
+using Daybreak.API.Models;
+using System.Core.Extensions;
+using System.Extensions.Core;
+using System.Runtime.InteropServices;
+using System.Security;
+
+namespace Daybreak.API.Services.Interop;
+
+public sealed class ChatHandlingService
+    : IHostedService, IHookHealthService
+{
+    private const string AddToChatLogMask = "xxxxxx";
+    private static readonly byte[] AddToChatLogSeq = [0x40, 0x25, 0xFF, 0x01, 0x00, 0x00];
+
+    [SuppressUnmanagedCodeSecurity]
+    [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+    private delegate bool AddToChatLog([MarshalAs(UnmanagedType.LPWStr)] string message, Channel channel);
+
+    private readonly MemoryScanningService memoryScanningService;
+    private readonly GWHook<AddToChatLog> addToChatLogHook;
+    private readonly ILogger<ChatHandlingService> logger;
+
+    private CancellationTokenSource? cts = default;
+
+    public ChatHandlingService(
+        MemoryScanningService memoryScanningService,
+        ILogger<ChatHandlingService> logger)
+    {
+        this.logger = logger.ThrowIfNull();
+        this.memoryScanningService = memoryScanningService.ThrowIfNull();
+        this.addToChatLogHook = new GWHook<AddToChatLog>(
+            new GWAddressCache(() => this.memoryScanningService.ToFunctionStart(
+                this.memoryScanningService.FindAddress(AddToChatLogSeq, AddToChatLogMask))),
+            this.OnAddToChatLog);
+    }
+
+    public Task StartAsync(CancellationToken cancellationToken)
+    {
+        this.cts?.Dispose();
+        this.cts = new CancellationTokenSource();
+        return Task.Factory.StartNew(() => this.InitializeHooks(this.cts.Token), this.cts.Token, TaskCreationOptions.LongRunning, TaskScheduler.Current);
+    }
+
+    public Task StopAsync(CancellationToken cancellationToken)
+    {
+        this.cts?.Cancel();
+        this.cts?.Dispose();
+        this.addToChatLogHook.Dispose();
+        return Task.CompletedTask;
+    }
+
+    public List<HookState> GetHookStates()
+    {
+        return
+            [
+                new HookState
+                {
+                    Hooked = this.addToChatLogHook.Hooked,
+                    Name = nameof(this.addToChatLogHook),
+                    TargetAddress = new PointerValue(this.addToChatLogHook.TargetAddress),
+                    ContinueAddress = new PointerValue(this.addToChatLogHook.ContinueAddress),
+                    DetourAddress = new PointerValue(this.addToChatLogHook.DetourAddress)
+                }
+            ];
+    }
+
+    private async ValueTask InitializeHooks(CancellationToken cancellationToken)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        scopedLogger.LogInformation("Initializing hooks");
+        while (!this.addToChatLogHook.EnsureInitialized())
+        {
+            scopedLogger.LogDebug("Waiting for hook to initialize: {hook}", nameof(this.addToChatLogHook));
+            await Task.Delay(1000, cancellationToken);
+        }
+
+        scopedLogger.LogInformation("Hooks initialized");
+    }
+
+    private bool OnAddToChatLog(string message, Channel channel)
+    {
+        return this.addToChatLogHook.Continue(message, channel);
+    }
+}

Daybreak.API/Services/Interop/GameContextService.cs

@@ -0,0 +1,181 @@
+using Daybreak.API.Interop;
+using Daybreak.API.Interop.GuildWars;
+using Daybreak.API.Models;
+using System.Core.Extensions;
+using System.Extensions.Core;
+
+namespace Daybreak.API.Services.Interop;
+
+public unsafe sealed class GameContextService : IAddressHealthService
+{
+    private const string BaseAddressMask = "xxxxxxx";
+    private const int BaseAddressOffset = +7;
+    private static readonly byte[] BaseAddressPattern = [0x50, 0x6A, 0x0F, 0x6A, 0x00, 0xFF, 0x35];
+
+    private const string PreGameContextFile = "UiPregame.cpp";
+    private const string PreGameContextAssertion = "!s_scene";
+    private const int PreGameContextOffset = 0x34;
+
+    private const string AvailableCharsMask = "xx????xxxxxxx";
+    private const int AvailableCharsOffset = 0x2;
+    private static readonly byte[] AvailableCharsPattern = [0x8B, 0x35, 0x00, 0x00, 0x00, 0x00, 0x57, 0x69, 0xF8, 0x84, 0x00, 0x00, 0x00];
+
+    private readonly MemoryScanningService memoryScanningService;
+    private readonly GWAddressCache baseAddress;
+    private readonly GWAddressCache preGameContextAddress;
+    private readonly GWAddressCache availableCharsAddress;
+    private readonly ILogger<GameContextService> logger;
+
+    public GameContextService(
+        MemoryScanningService memoryScanningService,
+        ILogger<GameContextService> logger)
+    {
+        this.logger = logger.ThrowIfNull();
+        this.memoryScanningService = memoryScanningService.ThrowIfNull();
+        this.baseAddress = new GWAddressCache(this.GetBaseAddress);
+        this.preGameContextAddress = new GWAddressCache(this.GetPreGameContextAddress);
+        this.availableCharsAddress = new GWAddressCache(this.GetAvailableCharactersAddress);
+    }
+
+    public List<AddressState> GetAddressStates()
+    {
+        return [
+            new AddressState
+            {
+                Address = this.baseAddress.GetAddress() ?? 0,
+                Name = nameof(this.baseAddress),
+            },
+            new AddressState
+            {
+                Address = this.preGameContextAddress.GetAddress() ?? 0,
+                Name = nameof(this.preGameContextAddress),
+            },
+            new AddressState
+            {
+                Address = this.availableCharsAddress.GetAddress() ?? 0,
+                Name = nameof(this.availableCharsAddress),
+            }
+        ];
+    }
+
+    public WrappedPointer<GameContext> GetGameContext()
+    {
+        var gameContextAddress = this.GetGameContextAddress();
+        if (gameContextAddress is 0x0)
+        {
+            this.logger.LogError("Failed to get game context address");
+            return null;
+        }
+
+        return (GameContext*)gameContextAddress;
+    }
+
+    public WrappedPointer<PreGameContext> GetPreGameContext()
+    {
+        var preGameContextAddress = this.preGameContextAddress.GetAddress();
+        if (preGameContextAddress is null or 0x0)
+        {
+            this.logger.LogError("Failed to get pre-game context address");
+            return null;
+        }
+
+        return *(PreGameContext**)preGameContextAddress;
+    }
+
+    public WrappedPointer<GuildWarsArray<CharInfoContext>> GetAvailableChars()
+    {
+        var availableCharsAddress = this.availableCharsAddress.GetAddress();
+        if (availableCharsAddress is null or 0x0)
+        {
+            this.logger.LogError("Failed to get available chars address");
+            return null;
+        }
+
+        return *(GuildWarsArray<CharInfoContext>**)availableCharsAddress;
+    }
+
+    public bool IsMapLoaded()
+    {
+        var gameContext = this.GetGameContext();
+        if (gameContext.IsNull)
+        {
+            return false;
+        }
+
+        if (gameContext.Pointer->MapContext is null)
+        {
+            return false;
+        }
+
+        return true;
+    }
+
+    private nuint GetGameContextAddress()
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        if (this.baseAddress.GetAddress() is not nuint basePtr)
+        {
+            scopedLogger.LogError("Failed to get base address");
+            return default;
+        }
+
+        nuint** baseContext = *(nuint***)basePtr;
+        if (baseContext is null)
+        {
+            scopedLogger.LogError("Failed to get base context address");
+            return default;
+        }
+
+        var globalContextPtr = baseContext[0x6];
+        if (globalContextPtr is null)
+        {
+            scopedLogger.LogError("Failed to get game context address");
+            return default;
+        }
+
+        return (nuint)globalContextPtr;
+    }
+
+    private nuint GetBaseAddress()
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        var baseAddress = this.memoryScanningService.FindAndResolveAddress(BaseAddressPattern, BaseAddressMask, BaseAddressOffset);
+        if (baseAddress is 0)
+        {
+            scopedLogger.LogError("Failed to find base address");
+            return 0U;
+        }
+
+        scopedLogger.LogInformation("Base address: 0x{address:X8}", baseAddress);
+        return baseAddress;
+    }
+
+    private unsafe nuint GetPreGameContextAddress()
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        var preGameContextAddress = this.memoryScanningService.FindAssertion(PreGameContextFile, PreGameContextAssertion, 0, PreGameContextOffset);
+        if (preGameContextAddress is 0)
+        {
+            scopedLogger.LogError("Failed to find pre-game context address");
+            return 0U;
+        }
+
+        preGameContextAddress = *(nuint*)preGameContextAddress;
+        scopedLogger.LogInformation("Pre-game context address: 0x{address:X8}", preGameContextAddress);
+        return preGameContextAddress;
+    }
+
+    private unsafe nuint GetAvailableCharactersAddress()
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        var availableCharsAddress = this.memoryScanningService.FindAddress(AvailableCharsPattern, AvailableCharsMask, AvailableCharsOffset);
+        if (availableCharsAddress is 0)
+        {
+            scopedLogger.LogError("Failed to find available chars address");
+            return 0U;
+        }
+
+        scopedLogger.LogInformation("Available chars address: 0x{address:X8}", availableCharsAddress);
+        return availableCharsAddress;
+    }
+}

Daybreak.API/Services/Interop/GameThreadService.cs

@@ -0,0 +1,142 @@
+using Daybreak.API.Interop;
+using Daybreak.API.Models;
+using System.Collections.Concurrent;
+using System.Core.Extensions;
+using System.Extensions.Core;
+using System.Runtime.InteropServices;
+using System.Security;
+
+namespace Daybreak.API.Services.Interop;
+
+public sealed class GameThreadService
+    : IHostedService, IHookHealthService
+{
+    private const string LeaveGameThreadFile = "FrApi.cpp";
+    private const string LeaveGameThreadAssertion = "renderElapsed >= 0";
+
+    [SuppressUnmanagedCodeSecurity]
+    [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+    private delegate void LeaveGameThread(nint ctx);
+
+    private readonly MemoryScanningService memoryScanningService;
+    private readonly GWHook<LeaveGameThread> leaveGameThreadHook;
+    private readonly ILogger<GameThreadService> logger;
+    private readonly ConcurrentQueue<IWorkItem> queuedItems = [];
+    private readonly ConcurrentDictionary<Guid, Action> registeredCallbacks = [];
+
+    private CancellationTokenSource? cts = default;
+
+    public GameThreadService(
+        MemoryScanningService memoryScanningService,
+        ILogger<GameThreadService> logger)
+    {
+        this.logger = logger.ThrowIfNull();
+        this.memoryScanningService = memoryScanningService.ThrowIfNull();
+        this.leaveGameThreadHook = new GWHook<LeaveGameThread>(
+            new GWAddressCache(() => this.memoryScanningService.ToFunctionStart(
+                this.memoryScanningService.FindAssertion(LeaveGameThreadFile, LeaveGameThreadAssertion, 0, 0), 0x300)),
+            this.OnLeaveGameThread);
+    }
+
+    public Task StartAsync(CancellationToken cancellationToken)
+    {
+        this.cts?.Dispose();
+        this.cts = new CancellationTokenSource();
+        return Task.Factory.StartNew(() => this.InitializeHooks(this.cts.Token), this.cts.Token, TaskCreationOptions.LongRunning, TaskScheduler.Current);
+    }
+
+    public Task StopAsync(CancellationToken cancellationToken)
+    {
+        this.cts?.Cancel();
+        this.cts?.Dispose();
+        this.leaveGameThreadHook.Dispose();
+        return Task.CompletedTask;
+    }
+
+    public Task QueueOnGameThread(Action action, CancellationToken cancellationToken)
+    {
+        var taskCompletionSource = new TaskCompletionSource();
+        this.queuedItems.Enqueue(new WorkItem(action, taskCompletionSource, cancellationToken));
+        return taskCompletionSource.Task;
+    }
+
+    public Task<T> QueueOnGameThread<T>(Func<T> action, CancellationToken cancellationToken)
+    {
+        var taskCompletionSource = new TaskCompletionSource<T>();
+        this.queuedItems.Enqueue(new WorkItem<T>(action, taskCompletionSource, cancellationToken));
+        return taskCompletionSource.Task;
+    }
+
+    public CallbackRegistration RegisterCallback(Action action)
+    {
+        var uid = new Guid();
+        var registration = new CallbackRegistration(uid, () => this.registeredCallbacks.TryRemove(uid, out _));
+        this.registeredCallbacks[uid] = action;
+        return registration;
+    }
+
+    public List<HookState> GetHookStates()
+    {
+        return
+            [
+                new HookState
+                {
+                    Hooked = this.leaveGameThreadHook.Hooked,
+                    Name = nameof(this.leaveGameThreadHook),
+                    TargetAddress = new PointerValue(this.leaveGameThreadHook.TargetAddress),
+                    ContinueAddress = new PointerValue(this.leaveGameThreadHook.ContinueAddress),
+                    DetourAddress = new PointerValue(this.leaveGameThreadHook.DetourAddress)
+                }
+            ];
+    }
+
+    private async ValueTask InitializeHooks(CancellationToken cancellationToken)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        scopedLogger.LogInformation("Initializing hooks");
+        while (!this.leaveGameThreadHook.EnsureInitialized())
+        {
+            scopedLogger.LogDebug("Waiting for hook to initialize: {hook}", nameof(this.leaveGameThreadHook));
+            await Task.Delay(1000, cancellationToken);
+        }
+
+        scopedLogger.LogInformation("Hooks initialized");
+    }
+
+    private void OnLeaveGameThread(nint ctx)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        while(this.queuedItems.TryDequeue(out var item))
+        {
+            try
+            {
+                if (item.CancellationToken.IsCancellationRequested)
+                {
+                    item.Cancel();
+                    continue;
+                }
+
+                item.Execute();
+            }
+            catch(Exception ex)
+            {
+                scopedLogger.LogError(ex, "Error executing action on game thread");
+                item.Exception(ex);
+            }
+        }
+
+        foreach(var callback in this.registeredCallbacks)
+        {
+            try
+            {
+                callback.Value();
+            }
+            catch(Exception ex)
+            {
+                scopedLogger.LogError(ex, "Error executing registered callback {uid}", callback.Key);
+            }
+        }
+
+        this.leaveGameThreadHook.Continue(ctx);
+    }
+}

Daybreak.API/Services/Interop/IAddressHealthService.cs

@@ -0,0 +1,8 @@
+using Daybreak.API.Models;
+
+namespace Daybreak.API.Services.Interop;
+
+public interface IAddressHealthService
+{
+    List<AddressState> GetAddressStates();
+}

Daybreak.API/Services/Interop/IHookHealthService.cs

@@ -0,0 +1,8 @@
+using Daybreak.API.Models;
+
+namespace Daybreak.API.Services.Interop;
+
+public interface IHookHealthService
+{
+    List<HookState> GetHookStates();
+}

Daybreak.API/Services/Interop/InstanceContextService.cs

@@ -0,0 +1,104 @@
+using Daybreak.API.Interop;
+using Daybreak.API.Interop.GuildWars;
+using Daybreak.API.Models;
+using System.Core.Extensions;
+
+namespace Daybreak.API.Services.Interop;
+
+public sealed unsafe class InstanceContextService : IAddressHealthService
+{
+    private const string InstanceInfoAddressMask = "xxxx????xxxx";
+    private const int InstanceInfoAddressOffset = +0xD;
+    private static readonly byte[] InstanceInfoAddressPattern = [0x6A, 0x2C, 0x50, 0xE8, 0x00, 0x00, 0x00, 0x00, 0x83, 0xC4, 0x08, 0xC7];
+    private const string AreaInfoAddressMask = "xxxxx";
+    private const int AreaInfoAddressOffset = +0x5;
+    private static readonly byte[] AreaInfoAddressPattern = [0x6B, 0xC6, 0x7C, 0x5E, 0x05];
+    private const string ServerRegionAddressMask = "xxxxxxx";
+    private const int ServerRegionAddressOffset = -0x4;
+    private static readonly byte[] ServerRegionAddressPattern = [0x6A, 0x54, 0x8D, 0x46, 0x24, 0x89, 0x08];
+
+    private readonly MemoryScanningService memoryScanningService;
+    private readonly GWAddressCache instanceInfoAddress;
+    private readonly GWAddressCache areaInfoAddress;
+    private readonly GWAddressCache serverRegionAddress;
+    private readonly ILogger<InstanceContextService> logger;
+
+    public InstanceContextService(
+        MemoryScanningService memoryScanningService,
+        ILogger<InstanceContextService> logger)
+    {
+        this.logger = logger.ThrowIfNull();
+        this.memoryScanningService = memoryScanningService.ThrowIfNull();
+        this.instanceInfoAddress = new GWAddressCache(() => this.memoryScanningService.FindAndResolveAddress(InstanceInfoAddressPattern, InstanceInfoAddressMask, InstanceInfoAddressOffset));
+        this.areaInfoAddress = new GWAddressCache(() => this.memoryScanningService.FindAndResolveAddress(AreaInfoAddressPattern, AreaInfoAddressMask, AreaInfoAddressOffset));
+        this.serverRegionAddress = new GWAddressCache(() => this.memoryScanningService.FindAndResolveAddress(ServerRegionAddressPattern, ServerRegionAddressMask, ServerRegionAddressOffset));
+    }
+
+    public List<AddressState> GetAddressStates()
+    {
+        return [
+            new AddressState
+            {
+                Address = this.instanceInfoAddress.GetAddress() ?? 0,
+                Name = nameof(this.instanceInfoAddress),
+            },
+            new AddressState
+            {
+                Address = this.areaInfoAddress.GetAddress() ?? 0,
+                Name = nameof(this.areaInfoAddress),
+            },
+            new AddressState
+            {
+                Address = this.serverRegionAddress.GetAddress() ?? 0,
+                Name = nameof(this.serverRegionAddress),
+            }
+            ];
+    }
+
+    public WrappedPointer<InstanceInfoContext> GetInstanceInfoContext()
+    {
+        var instanceInfoAddress = this.instanceInfoAddress.GetAddress();
+        if (instanceInfoAddress is null)
+        {
+            this.logger.LogError("Failed to get instance info address");
+            return null;
+        }
+
+        return (InstanceInfoContext*)instanceInfoAddress;
+    }
+
+    public WrappedPointer<AreaInfo> GetAreaInfo()
+    {
+        var areaInfoAddress = this.areaInfoAddress.GetAddress();
+        if (areaInfoAddress is null)
+        {
+            this.logger.LogError("Failed to get area info address");
+            return null;
+        }
+
+        return (AreaInfo*)areaInfoAddress;
+    }
+
+    public ServerRegion GetServerRegion()
+    {
+        var serverRegionAddress = this.serverRegionAddress.GetAddress();
+        if (serverRegionAddress is null)
+        {
+            this.logger.LogError("Failed to get server region address");
+            return ServerRegion.Unknown;
+        }
+
+        return *(ServerRegion*)serverRegionAddress;
+    }
+
+    public InstanceType GetInstanceType()
+    {
+        var instanceInfo = this.GetInstanceInfoContext();
+        if (instanceInfo.IsNull)
+        {
+            return InstanceType.Loading;
+        }
+
+        return instanceInfo.Pointer->InstanceType;
+    }
+}

Daybreak.API/Services/Interop/MemoryScanningService.cs

@@ -0,0 +1,335 @@
+using Daybreak.Shared.Models.Interop;
+using PeNet;
+using PeNet.Header.Pe;
+using System.Core.Extensions;
+using System.Diagnostics;
+using System.Diagnostics.CodeAnalysis;
+using System.Extensions.Core;
+using System.Globalization;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace Daybreak.API.Services.Interop;
+
+public sealed unsafe class MemoryScanningService
+{
+    private readonly ILogger<MemoryScanningService> logger;
+    private readonly (nuint BaseAddress, ImageSectionHeader Section) textSection = GetSectionHeader(".text");
+    private readonly (nuint BaseAddress, ImageSectionHeader Section) dataSection = GetSectionHeader(".rdata");
+
+    public MemoryScanningService(
+        ILogger<MemoryScanningService> logger)
+    {
+        this.logger = logger.ThrowIfNull();
+    }
+
+    public T? ReadPointer<[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors | DynamicallyAccessedMemberTypes.NonPublicConstructors)] T>(GuildwarsPointer<T> ptr)
+        where T : struct
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        scopedLogger.LogInformation("Reading pointer: 0x{ptr:X8}", ptr.Address);
+        if (ptr.Address is 0)
+        {
+            return default;
+        }
+
+        return Marshal.PtrToStructure<T>((nint)ptr.Address);
+    }
+
+    public nuint FunctionFromNearCall(nuint callInstructionAddress, bool checkValidPtr = true)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        if (callInstructionAddress is 0)
+        {
+            scopedLogger.LogError("Invalid call instruction address: 0x{address:X8}", callInstructionAddress);
+            return 0;
+        }
+
+        var opcode = Marshal.ReadByte((nint)callInstructionAddress);
+        var functionAddress = opcode switch
+        {
+            0xE8 => (nuint)((nint)callInstructionAddress + 5 + Marshal.ReadInt32((nint)(callInstructionAddress + 1))),
+            0xE9 => (nuint)((nint)callInstructionAddress + 5 + Marshal.ReadInt32((nint)(callInstructionAddress + 1))),
+            0xEB => (nuint)((nint)callInstructionAddress + 2 + (sbyte)Marshal.ReadByte((nint)(callInstructionAddress + 1))),
+            _ => (nuint)0
+        };
+
+        if (checkValidPtr && functionAddress is 0)
+        {
+            scopedLogger.LogError("Invalid function address: 0x{address:X8}", functionAddress);
+            return 0;
+        }
+
+        // Recursively resolve nested JMPs
+        var nestedCall = this.FunctionFromNearCall(functionAddress, checkValidPtr);
+        if (nestedCall != 0)
+        {
+            scopedLogger.LogInformation("Resolved nested call to: 0x{address:X8}", nestedCall);
+            return nestedCall;
+        }
+
+        scopedLogger.LogInformation("Resolved function address: 0x{address:X8}", functionAddress);
+        return functionAddress;
+    }
+
+    public nuint FindAssertion(
+        string assertionFile,
+        string assertionMessage,
+        uint lineNumber = 0,
+        int offset = 0)
+    {
+        Span<byte> pattern =
+        [
+            0x68, 0,0,0,0,      // push <line> / will be overwritten later
+            0xBA, 0,0,0,0,      // mov  edx,<file> / will be overwritten later
+            0xB9, 0,0,0,0       // mov  ecx,<msg > / will be overwritten later
+        ];
+
+        const string maskAll = "xxxxxxxxxxxxxxx";   // 15 × 'x'
+
+        var msgBytes = Encoding.ASCII.GetBytes(assertionMessage + '\0');
+        var msgMask = new string('x', msgBytes.Length);
+
+        var fileOrigBytes = Encoding.ASCII.GetBytes(assertionFile + '\0');
+        var fileOrigMask = new string('x', fileOrigBytes.Length);
+
+        var (rdataBase, rdataHdr) = this.dataSection;
+        var rdataStart = rdataBase + rdataHdr.VirtualAddress;
+        var rdataEnd = rdataStart + rdataHdr.VirtualSize;
+
+        nuint msgSearchPos = rdataStart;
+        while (true)
+        {
+            var msgPtr = FindInRange(msgBytes, msgMask, 0, msgSearchPos, rdataEnd);
+            if (msgPtr is 0)
+            {
+                break;                 // no more messages → we are done
+            }
+
+            msgSearchPos = msgPtr + 1; // next search starts just after the hit
+
+            // write ECX operand (little-endian) into the pattern
+            BitConverter.TryWriteBytes(pattern.Slice(11, 4), (uint)msgPtr);
+
+            var fileSearchPos = rdataStart;
+            while (true)
+            {
+                var filePtr = FindInRange(fileOrigBytes, fileOrigMask, 0, fileSearchPos, rdataEnd);
+
+                // fallbacks: lower-case and CamelCase, exactly like the C++
+                if (filePtr == 0)
+                {
+                    var lower = assertionFile.ToLowerInvariant();
+                    var lowerBytes = Encoding.ASCII.GetBytes(lower + '\0');
+                    filePtr = FindInRange(lowerBytes, new string('x', lowerBytes.Length), 0, fileSearchPos, rdataEnd);
+                }
+
+                if (filePtr == 0)
+                {
+                    var camel = ToCamelCase(assertionFile);
+                    var camelBytes = Encoding.ASCII.GetBytes(camel + '\0');
+                    filePtr = FindInRange(camelBytes, new string('x', camelBytes.Length), 0, fileSearchPos, rdataEnd);
+                }
+
+                if (filePtr == 0)
+                {
+                    break;                          // try next message
+                }
+
+                fileSearchPos = filePtr + 1;
+
+                // If what we found is “…/file.hpp” (no drive letter) fix it
+                if (Marshal.ReadByte((nint)(filePtr + 1)) != (byte)':')
+                {
+                    // look ≤128 bytes backward for ':' and back-up one char
+                    nuint colon = FindInRange([(byte)':'], "x", -1, filePtr, filePtr - 128);
+                    if (colon == 0)
+                    {
+                        continue; // failed → try next file hit
+                    }
+
+                    filePtr = colon;
+                }
+
+                // write EDX operand
+                BitConverter.TryWriteBytes(pattern.Slice(6, 4), (uint)filePtr);
+
+                nuint hit = 0;
+                if (lineNumber != 0 && (lineNumber & 0xff) == lineNumber)
+                {
+                    // PUSH imm8 variant  –  start matching at pattern[3]
+                    pattern[3] = 0x6A;           // opcode
+                    pattern[4] = (byte)lineNumber;
+                    hit = FindAddressInternal(
+                        this.textSection,
+                        pattern[3..].ToArray(),
+                        maskAll[3..],
+                        offset);
+                }
+
+                if (hit == 0 && lineNumber != 0)
+                {
+                    // PUSH imm32 variant  –  whole pattern
+                    pattern[0] = 0x68;
+                    BitConverter.TryWriteBytes(pattern.Slice(1, 4), lineNumber);
+                    hit = FindAddressInternal(
+                        this.textSection,
+                        pattern.ToArray(),
+                        maskAll,
+                        offset);
+                }
+
+                if (hit == 0 && lineNumber == 0)
+                {
+                    // No line number  –  match only from MOV EDX onward
+                    hit = FindAddressInternal(
+                        this.textSection,
+                        pattern[5..].ToArray(),
+                        maskAll[5..],
+                        offset);
+                }
+
+                if (hit != 0)
+                {
+                    return hit;           // found exactly what we wanted
+                }
+            }
+        }
+
+        return 0;                         // nothing matched
+    }
+
+    public nuint FindAndResolveAddress(byte[] pattern, string mask, int offset = 0)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        var address = FindAddressInternal(this.textSection, pattern, mask, offset);
+        if (address is 0)
+        {
+            scopedLogger.LogError("Failed to find address");
+            return 0;
+        }
+
+        var ptr = (nuint)Marshal.ReadIntPtr((nint)address);
+        return ptr;
+    }
+
+    public nuint FindAddress(byte[] pattern, string mask, int offset = 0)
+    {
+        var address = FindAddressInternal(this.textSection, pattern, mask, offset);
+        return address;
+    }
+
+    public nuint ToFunctionStart(nuint callInstructionAddress, uint scanRange = 0x500)
+    {
+        if (callInstructionAddress == 0)
+        {
+            return 0;
+        }
+
+        // pattern: 55 8B EC   – mask: "xxx"
+        ReadOnlySpan<byte> prologue = [0x55, 0x8B, 0xEC];
+        const string mask = "xxx";
+
+        var start = callInstructionAddress;                // begin at the CALL itself
+        var end = callInstructionAddress - scanRange;    // scan backwards
+
+        return FindInRange(prologue, mask, 0, start, end);
+    }
+
+    private static bool IsValidPtr(nuint address, (nuint BaseAddress, ImageSectionHeader Section) section)
+    {
+        return address > 0 && 
+            (ulong)address > section.Section.ImageBaseAddress &&
+            (ulong)address < (section.Section.ImageBaseAddress + section.Section.VirtualSize);
+    }
+
+    private static unsafe nuint FindInRange(
+        ReadOnlySpan<byte> pattern,
+        string mask,
+        int offset,
+        nuint start,
+        nuint end)
+    {
+        bool forward = start < end;
+        int patLength = pattern.Length;
+
+        if (forward)
+        {
+            end -= (uint)patLength;                 // forward scan ⇒ clamp tail
+        }
+
+        var cur = start;
+        while (forward ? cur <= end : cur >= end)
+        {
+            if (Marshal.ReadByte((nint)cur) == pattern[0])
+            {
+                var matched = true;
+                for (int i = 1; i < patLength && matched; ++i)
+                {
+                    if (mask[i] == 'x' &&
+                        Marshal.ReadByte((nint)(cur + (uint)i)) != pattern[i])
+                    {
+                        matched = false;
+                    }
+                }
+
+                if (matched)
+                {
+                    return (nuint)((long)cur + offset);
+                }
+            }
+
+            cur = forward ? cur + 1 : cur - 1;
+            if (!forward && cur == 0)               // prevent unsigned wrap-around
+            {
+                break;
+            }
+        }
+
+        return 0;
+    }
+
+    private static string ToCamelCase(string text)
+        => CultureInfo.InvariantCulture.TextInfo.ToTitleCase(text.ToLowerInvariant());
+
+    private static nuint FindAddressInternal((nuint BaseAddress, ImageSectionHeader Section) section, byte[] pattern, string mask, int offset = 0)
+    {
+        var textStart = section.BaseAddress + section.Section.VirtualAddress;
+        var textEnd = textStart + section.Section.VirtualSize - (uint)pattern.Length;
+
+        for (var cur = textStart; cur <= textEnd; ++cur)
+        {
+            if (Marshal.ReadByte((nint)cur) != pattern[0])
+            {
+                continue;
+            }
+
+            var match = true;
+            for (var i = 1; i < pattern.Length && match; ++i)
+            {
+                if (mask[i] is 'x' && Marshal.ReadByte((nint)(cur + (uint)i)) != pattern[i])
+                {
+                    match = false;
+                }
+            }
+
+            if (match)
+            {
+                return (nuint)((nint)cur + offset);
+            }
+        }
+
+        return 0;
+    }
+
+    private static (nuint, ImageSectionHeader) GetSectionHeader(string headerName)
+    {
+        var m = Process.GetCurrentProcess().MainModule ?? throw new InvalidOperationException("Failed to initialize memory scanner. Failed to find main module");
+        var baseAddr = (nuint)m.BaseAddress;
+        var pe = new PeFile(m.FileName);
+        var textHdr = pe.ImageSectionHeaders?.FirstOrDefault(h => h.Name == headerName);
+        return textHdr is null
+            ? throw new InvalidOperationException($"Failed to initialize memory scanner. Failed to find {headerName} section")
+            : ((nuint, ImageSectionHeader))(baseAddr, textHdr);
+    }
+}

Daybreak.API/Services/Interop/PartyContextService.cs

@@ -0,0 +1,99 @@
+using Daybreak.API.Interop;
+using Daybreak.API.Models;
+using System.Core.Extensions;
+using System.Extensions;
+
+namespace Daybreak.API.Services.Interop;
+
+public sealed class PartyContextService
+        : IAddressHealthService
+{
+    private const string SearchButtonFile = "\\Code\\Gw\\Ui\\Game\\Party\\PtSearch.cpp";
+    private const string SearchButtonAssertion = "m_activeList == LIST_HEROES";
+    private const string WindowButtonFile = "\\Code\\Gw\\Ui\\Game\\Party\\PtButtons.cpp";
+    private const string WindowButtonAssertion = "m_selection.agentId";
+
+    // Fastcall funcs do not work in .NET for x86 right now. https://github.com/dotnet/runtime/issues/113851
+    // This fastcall equivalent is <void*, uint, uint*, void>
+    private readonly GWFastCall<nint, uint, nint, GWFastCall.Void> searchButtonCallback;
+    // This fastcall equivalent is <void*, uint, uint*, void>
+    private readonly GWFastCall<nint, uint, nint, GWFastCall.Void> windowButtonCallback;
+
+    private readonly MemoryScanningService memoryScanningService;
+    private readonly ILogger<PartyContextService> logger;
+
+    public PartyContextService(
+        MemoryScanningService memoryScanningService,
+        ILogger<PartyContextService> logger)
+    {
+        this.memoryScanningService = memoryScanningService.ThrowIfNull();
+        this.logger = logger.ThrowIfNull();
+        this.searchButtonCallback = new(new GWAddressCache(() => this.memoryScanningService.ToFunctionStart(this.memoryScanningService.FindAssertion(SearchButtonFile, SearchButtonAssertion, 0, 0))));
+        this.windowButtonCallback = new(new GWAddressCache(() => this.memoryScanningService.ToFunctionStart(this.memoryScanningService.FindAssertion(WindowButtonFile, WindowButtonAssertion, 0, 0))));
+    }
+
+    public List<AddressState> GetAddressStates()
+    {
+        unsafe
+        {
+            return
+            [
+                new AddressState
+                {
+                    Address = this.searchButtonCallback.Cache.GetAddress() ?? 0,
+                    Name = nameof(this.searchButtonCallback)
+                },
+                new AddressState
+                {
+                    Address = this.windowButtonCallback.Cache.GetAddress() ?? 0,
+                    Name = nameof(this.windowButtonCallback)
+                }
+            ];
+        }
+    }
+
+    public unsafe bool CallSearchButtonCallback(void* ctx, uint edx, uint* wparam)
+    {
+        this.searchButtonCallback.Invoke((nint)ctx, edx, (nint)wparam);
+        return true;
+    }
+
+    public unsafe bool CallWindowButtonCallback(void* ctx, uint edx, uint* wparam)
+    {
+        this.windowButtonCallback.Invoke((nint)ctx, edx, (nint)wparam);
+        return true;
+    }
+
+    public unsafe bool AddHero(uint heroId)
+    {
+        var wparam = stackalloc uint[4];
+        wparam[2] = 0x6;
+        wparam[1] = 0x1;
+
+        var ctx = stackalloc uint[13];
+        ctx[0xb] = 1;
+        ctx[9] = heroId;
+        return this.CallSearchButtonCallback(ctx, 2, wparam);
+    }
+
+    public unsafe bool KickHero(uint heroId)
+    {
+        var wparam = stackalloc uint[4];
+        wparam[2] = 0x6;
+        wparam[1] = 0x6;
+
+        var ctx = stackalloc uint[13];
+        ctx[0xb] = 1;
+        ctx[9] = heroId;
+        return this.CallSearchButtonCallback(ctx, 0, wparam);
+    }
+
+    public bool KickAllHeroes() => this.KickHero(0x26);
+
+    public unsafe bool LeaveParty()
+    {
+        var ctx = stackalloc uint[14];
+        ctx[0xd] = 1;
+        return this.CallWindowButtonCallback(ctx, 0, (uint*)0);
+    }
+}

Daybreak.API/Services/Interop/PlatformContextService.cs

@@ -0,0 +1,64 @@
+using Daybreak.API.Interop;
+using Daybreak.API.Models;
+using System.Core.Extensions;
+using System.Extensions.Core;
+
+namespace Daybreak.API.Services.Interop;
+
+public sealed class PlatformContextService
+    : IAddressHealthService
+{
+    private const string WindowHandleAddressMask = "xxxxx????xxx";
+    private const int WindowHandleAddressOffset = -0xC;
+    private static readonly byte[] WindowHandleAddressPattern = [0x83, 0xC4, 0x04, 0x83, 0x3D, 0x00, 0x00, 0x00, 0x00, 0x00, 0x75, 0x31];
+
+    private readonly MemoryScanningService memoryScanningService;
+    private readonly GWAddressCache windowHandleAddress;
+    private readonly ILogger<PlatformContextService> logger;
+
+    public PlatformContextService(
+        MemoryScanningService memoryScanningService,
+        ILogger<PlatformContextService> logger)
+    {
+        this.logger = logger.ThrowIfNull();
+        this.memoryScanningService = memoryScanningService.ThrowIfNull();
+        this.windowHandleAddress = new GWAddressCache(this.GetWindowHandleAddress);
+    }
+
+    public List<AddressState> GetAddressStates()
+    {
+        return [
+            new AddressState
+            {
+                Address = this.windowHandleAddress.GetAddress() ?? 0,
+                Name = nameof(this.windowHandleAddress),
+            },
+            ];
+    }
+
+    public unsafe uint? GetWindowHandle()
+    {
+        var windowHandlePtr = this.windowHandleAddress.GetAddress();
+        if (windowHandlePtr is null)
+        {
+            this.logger.LogError("Failed to get window handle");
+            return null;
+        }
+
+        return *(uint*)windowHandlePtr;
+    }
+
+    private nuint GetWindowHandleAddress()
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        var baseAddress = this.memoryScanningService.FindAndResolveAddress(WindowHandleAddressPattern, WindowHandleAddressMask, WindowHandleAddressOffset);
+        if (baseAddress is 0)
+        {
+            scopedLogger.LogError("Failed to find window handle address");
+            return 0U;
+        }
+
+        scopedLogger.LogInformation("Window handle address: 0x{address:X8}", baseAddress);
+        return baseAddress;
+    }
+}

Daybreak.API/Services/Interop/SkillbarContextService.cs

@@ -0,0 +1,62 @@
+using Daybreak.API.Interop;
+using Daybreak.API.Interop.GuildWars;
+using Daybreak.API.Models;
+using System.Core.Extensions;
+using System.Extensions.Core;
+using System.Runtime.InteropServices;
+using System.Security;
+
+namespace Daybreak.API.Services.Interop;
+
+public sealed class SkillbarContextService
+    : IAddressHealthService
+{
+    private const string LoadSkillTemplateFile = "TemplatesHelpers.cpp";
+    private const string LoadSkillTemplateAssertion = "targetPrimaryProf == templateData.profPrimary";
+
+    [SuppressUnmanagedCodeSecurity]
+    [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+    private unsafe delegate void LoadSkillTemplate(uint agentId, SkillTemplate* template);
+
+    private readonly MemoryScanningService memoryScanningService;
+    private readonly GWDelegateCache<LoadSkillTemplate> loadSkillTemplateFunc;
+    private readonly ILogger<SkillbarContextService> logger;
+
+    public SkillbarContextService(
+        MemoryScanningService memoryScanningService,
+        ILogger<SkillbarContextService> logger)
+    {
+        this.logger = logger.ThrowIfNull();
+        this.memoryScanningService = memoryScanningService.ThrowIfNull();
+        unsafe
+        {
+            this.loadSkillTemplateFunc = new GWDelegateCache<LoadSkillTemplate>(
+            new GWAddressCache(() => this.memoryScanningService.ToFunctionStart(
+                this.memoryScanningService.FindAssertion(LoadSkillTemplateFile, LoadSkillTemplateAssertion, 0, 0), 0x200)));
+        }
+    }
+
+    public List<AddressState> GetAddressStates()
+    {
+        return
+            [
+                new()
+                {
+                    Address = this.loadSkillTemplateFunc.Cache.GetAddress() ?? 0U,
+                    Name = nameof(this.loadSkillTemplateFunc)
+                }
+            ];
+    }
+
+    public unsafe void LoadBuild(uint agentId, SkillTemplate* template)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        if (this.loadSkillTemplateFunc.GetDelegate() is not LoadSkillTemplate func)
+        {
+            scopedLogger.LogError("Load skill template delegate is not initialized");
+            return;
+        }
+
+        func(agentId, template);
+    }
+}

Daybreak.API/Services/Interop/UIContextService.cs

@@ -0,0 +1,385 @@
+using Daybreak.API.Interop;
+using Daybreak.API.Interop.GuildWars;
+using Daybreak.API.Models;
+using System.Core.Extensions;
+using System.Extensions.Core;
+using System.Runtime.InteropServices;
+using System.Security;
+
+namespace Daybreak.API.Services.Interop;
+
+public sealed class UIContextService
+    : IAddressHealthService, IHostedService, IHookHealthService
+{
+    private const string GetChildFrameIdFile = "CtlView.cpp";
+    private const string GetChildFrameIdAssertion = "pageId";
+    private const int GetChildFrameIdOffset = 0x19;
+    private const string SetFrameFlagFile = "FrApi.cpp";
+    private const string SetFrameFlagAssertion = "frameId";
+    private const int SetFrameVisibleOffset = 0x4f9;
+    private const int SetFrameDisabledOffset = 0x4e3;
+    private static readonly byte[] SendFrameUiMessageByIdSeq = [0x83, 0xFB, 0x47, 0x73, 0x14];
+    private const string SendFrameUiMessageByIdMask = "xxxxx";
+    private const int SendFrameUiMessageByIdOffset = -0x34;
+    private static readonly byte[] SendUIMessageSeq = [0xB9, 0x00, 0x00, 0x00, 0x00, 0xE8, 0x00, 0x00, 0x00, 0x00, 0x5D, 0xC3, 0x89, 0x45, 0x08];
+    private const string SendUIMessageMask = "x????x????xxxxx";
+    private const string CreateHashFromStringMask = "xxxxxxx";
+    private const int CreateHashFromStringOffset = 0x7;
+    private static readonly byte[] CreateHashFromStringSeq = [0x85, 0xC0, 0x74, 0x0D, 0x6A, 0xFF, 0x50];
+    private const string FrameArrayFile = "\\Code\\Engine\\Frame\\FrMsg.cpp";
+    private const string FrameArrayAssertion = "frame";
+    private static readonly byte[] GetRootFrameSeq = [0x05, 0xE0, 0xFE, 0xFF, 0xFF, 0xC3];
+    private const string GetRootFrameMask = "xxxxxx";
+    private const int GetRootFrameOffset = -0x3C;
+
+    [SuppressUnmanagedCodeSecurity]
+    [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+    private unsafe delegate uint CreateHashFromStringFunc(char* value, int seed);
+
+    [SuppressUnmanagedCodeSecurity]
+    [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+    private delegate void SendUIMessageFunc(UIMessage uiMessage, nuint wParam, nuint lParam);
+
+    [SuppressUnmanagedCodeSecurity]
+    [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+    private delegate void SetFrameFlagFunc(uint frameId, uint flag);
+
+    [SuppressUnmanagedCodeSecurity]
+    [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+    private delegate uint GetChildFrameIdFunc(uint parentFrameId, uint childOffset);
+
+    [SuppressUnmanagedCodeSecurity]
+    [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+    private unsafe delegate Frame* GetRootFrameFunc();
+
+    private readonly SemaphoreSlim semaphoreSlim = new(1);
+    private readonly MemoryScanningService memoryScanningService;
+    private readonly GWDelegateCache<CreateHashFromStringFunc> createHashFromString;
+    private readonly GWDelegateCache<GetChildFrameIdFunc> getChildFrameId;
+    private readonly GWAddressCache frameArrayAddressCache;
+    private readonly GWHook<SendUIMessageFunc> sendUiMessageHook;
+    private readonly GWDelegateCache<GetRootFrameFunc> getRootFrame;
+    // This fastcall equivalent is <GuildWarsArray<FrameInteractionCallback>*, void*, UIMessage, void*, void*>
+    private readonly GWFastCall<nint, nint, UIMessage, nint, nint, GWFastCall.Void> sendFrameUIMessage;
+    private readonly ILogger<UIContextService> logger;
+
+    private CancellationTokenSource? cts = default;
+
+    public UIContextService(
+        MemoryScanningService memoryScanningService,
+        ILogger<UIContextService> logger)
+    {
+        this.logger = logger.ThrowIfNull();
+        this.memoryScanningService = memoryScanningService.ThrowIfNull();
+        this.createHashFromString = new GWDelegateCache<CreateHashFromStringFunc>(new GWAddressCache(() => this.memoryScanningService.FunctionFromNearCall(
+                this.memoryScanningService.FindAddress(CreateHashFromStringSeq, CreateHashFromStringMask, CreateHashFromStringOffset))));
+        this.frameArrayAddressCache = new GWAddressCache(() => this.memoryScanningService.FindAssertion(FrameArrayFile, FrameArrayAssertion, 0, -0x14));
+        this.sendUiMessageHook = new GWHook<SendUIMessageFunc>(
+            new GWAddressCache(() => this.memoryScanningService.ToFunctionStart(
+                this.memoryScanningService.FindAddress(SendUIMessageSeq, SendUIMessageMask))),
+            this.OnSendUIMessage);
+        this.sendFrameUIMessage = new(
+            new GWAddressCache(() => this.memoryScanningService.FunctionFromNearCall(
+                this.memoryScanningService.FindAddress(SendFrameUiMessageByIdSeq, SendFrameUiMessageByIdMask, SendFrameUiMessageByIdOffset) + 0x67)));
+        this.getChildFrameId = new GWDelegateCache<GetChildFrameIdFunc>(
+            new GWAddressCache(() => this.memoryScanningService.FunctionFromNearCall(
+                this.memoryScanningService.FindAssertion(GetChildFrameIdFile, GetChildFrameIdAssertion, 0, GetChildFrameIdOffset))));
+        this.getRootFrame = new GWDelegateCache<GetRootFrameFunc>(
+            new GWAddressCache(() => this.memoryScanningService.FindAddress(GetRootFrameSeq, GetRootFrameMask, GetRootFrameOffset)));
+    }
+
+    public List<AddressState> GetAddressStates()
+    {
+        return
+        [
+            new()
+            {
+                Name = nameof(this.createHashFromString),
+                Address = this.createHashFromString.Cache.GetAddress() ?? 0U
+            },
+            new()
+            {
+                Name = nameof(this.frameArrayAddressCache),
+                Address = this.frameArrayAddressCache.GetAddress() ?? 0U
+            },
+            new()
+            {
+                Name = nameof(this.getChildFrameId),
+                Address = this.getChildFrameId.Cache.GetAddress() ?? 0U
+            },
+            new()
+            {
+                Name = nameof(this.sendFrameUIMessage),
+                Address = this.sendFrameUIMessage.Cache.GetAddress() ?? 0U
+            },
+            new()
+            {
+                Name = nameof(this.getRootFrame),
+                Address = this.getRootFrame.Cache.GetAddress() ?? 0U
+            }
+        ];
+    }
+
+    public List<HookState> GetHookStates()
+    {
+        return
+            [
+                new HookState
+                {
+                    Hooked = this.sendUiMessageHook.Hooked,
+                    Name = nameof(this.sendUiMessageHook),
+                    TargetAddress = this.sendUiMessageHook.TargetAddress,
+                    ContinueAddress = this.sendUiMessageHook.ContinueAddress,
+                    DetourAddress = this.sendUiMessageHook.DetourAddress
+                }
+            ];
+    }
+
+    public Task StartAsync(CancellationToken cancellationToken)
+    {
+        this.cts?.Dispose();
+        this.cts = new CancellationTokenSource();
+        return Task.Factory.StartNew(() => this.InitializeHooks(this.cts.Token), this.cts.Token, TaskCreationOptions.LongRunning, TaskScheduler.Current);
+    }
+
+    public Task StopAsync(CancellationToken cancellationToken)
+    {
+        this.cts?.Cancel();
+        this.cts?.Dispose();
+        this.sendUiMessageHook.Dispose();
+        return Task.CompletedTask;
+    }
+
+    public unsafe WrappedPointer<Frame> GetChildFrame(WrappedPointer<Frame> parent, uint childOffset)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        if (parent.IsNull)
+        {
+            scopedLogger.LogError("Parent frame is null");
+            return null;
+        }
+
+        var getChildFrameId = this.getChildFrameId.GetDelegate();
+        if (getChildFrameId is null)
+        {
+            scopedLogger.LogError("Failed to get GetChildFrameId delegate");
+            return null;
+        }
+
+        var childFrameId = getChildFrameId(parent.Pointer->FrameId, childOffset);
+        if (childFrameId == 0)
+        {
+            scopedLogger.LogError("No child frame found for parent frame {parent}", parent.Pointer->FrameId);
+            return null;
+        }
+
+        return this.GetFrameById(childFrameId);
+    }
+
+    public WrappedPointer<Frame> GetButtonActionFrame()
+    {
+        return this.GetChildFrame(this.GetFrameByLabel("Game"), 6);
+    }
+
+    public unsafe bool SendFrameUIMessage(WrappedPointer<Frame> frame, UIMessage messageId, void* arg1, void* arg2 = null)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        if (frame.IsNull)
+        {
+            scopedLogger.LogError("Frame is null");
+            return false;
+        }
+
+        this.sendFrameUIMessage.Invoke((nint)(&frame.Pointer->FrameCallbacks), 0, messageId, (nint)arg1, (nint)arg2);
+        return true;
+    }
+
+    public unsafe bool SetFrameDisabled(WrappedPointer<Frame> frame, bool disabled)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        if (frame.IsNull)
+        {
+            scopedLogger.LogError("Frame is null");
+            return false;
+        }
+
+        SetFrameDisabledInternal(frame, disabled);
+        return true;
+    }
+
+    public unsafe bool SetFrameVisible(WrappedPointer<Frame> frame, bool visible)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        if (frame.IsNull)
+        {
+            scopedLogger.LogError("Frame is null");
+            return false;
+        }
+
+        SetFrameVisibleInternal(frame, visible);
+        return true;
+    }
+
+    public unsafe bool KeyDown(UIAction action, WrappedPointer<Frame> frame)
+    {
+        if (frame.IsNull)
+        {
+            frame = this.GetButtonActionFrame();
+        }
+
+        this.semaphoreSlim.Wait();
+        var packet = new UIPackets.KeyAction((uint)action);
+        this.SendFrameUIMessage(frame, UIMessage.KeyDown, &packet);
+        this.semaphoreSlim.Release();
+        return true;
+    }
+
+    public unsafe bool KeyUp(UIAction action, WrappedPointer<Frame> frame)
+    {
+        if (frame.IsNull)
+        {
+            frame = this.GetButtonActionFrame();
+        }
+
+        this.semaphoreSlim.Wait();
+        var packet = new UIPackets.KeyAction((uint)action);
+        this.SendFrameUIMessage(frame, UIMessage.KeyUp, &packet);
+        this.semaphoreSlim.Release();
+        return true;
+    }
+
+    public unsafe WrappedPointer<GuildWarsArray<WrappedPointer<Frame>>> GetFrameArray()
+    {
+        if (this.frameArrayAddressCache.GetAddress() is not nuint address)
+        {
+            return null;
+        }
+
+        return *(GuildWarsArray<WrappedPointer<Frame>>**)address;
+    }
+
+    public unsafe WrappedPointer<Frame> GetFrameByLabel(string label)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        var frameArray = this.GetFrameArray();
+        if (frameArray.IsNull)
+        {
+            scopedLogger.LogError("Frame array is null");
+            return null;
+        }
+
+        var hash = this.CreateHashFromString(label, -1);
+        if (hash is 0)
+        {
+            scopedLogger.LogError("Failed to get hash for label {label}", label);
+            return null;
+        }
+
+        for(var i = 0; i < frameArray.Pointer->Size; i++)
+        {
+            var frame = frameArray.Pointer->Buffer[i];
+            if (frame.Pointer is null ||
+                (int)frame.Pointer == -1)
+            {
+                continue;
+            }
+
+            if (frame.Pointer->Relation.FrameHashId == hash)
+            {
+                return frame;
+            }
+        }
+
+        scopedLogger.LogWarning("Frame with label {label} not found", label);
+        return null;
+    }
+
+    public unsafe WrappedPointer<Frame> GetFrameById(uint frameId)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        var frameArray = this.GetFrameArray();
+        if (frameArray.IsNull ||
+            frameArray.Pointer->Size <= frameId)
+        {
+            scopedLogger.LogError("Frame array is null or frameId {frameId} is out of bounds", frameId);
+            return null;
+        }
+
+        var frame = frameArray.Pointer->Skip((int)frameId).FirstOrDefault();
+        if (frame.IsNull)
+        {
+            scopedLogger.LogWarning("Frame with id {frameId} not found", frameId);
+            return null;
+        }
+
+        return frame;
+    }
+
+    public unsafe uint CreateHashFromString(string value, int seed)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        if (this.createHashFromString.GetDelegate() is not CreateHashFromStringFunc del)
+        {
+            scopedLogger.LogError("Failed to get CreateHashFromString delegate");
+            return 0;
+        }
+
+        fixed (char* valuePtr = value)
+        {
+            return del(valuePtr, seed);
+        }
+    }
+
+    public unsafe void SendMessage(UIMessage message, nuint wParam, nuint lParam)
+    {
+        this.semaphoreSlim.Wait();
+        this.sendUiMessageHook.Continue(message, wParam, lParam);
+        this.semaphoreSlim.Release();
+    }
+
+    private async ValueTask InitializeHooks(CancellationToken cancellationToken)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        scopedLogger.LogInformation("Initializing hooks");
+        while (!this.sendUiMessageHook.EnsureInitialized())
+        {
+            scopedLogger.LogDebug("Waiting for hook to initialize: {hook}", nameof(this.sendUiMessageHook));
+            await Task.Delay(1000, cancellationToken);
+        }
+
+        scopedLogger.LogInformation("Hooks initialized");
+    }
+
+    private void OnSendUIMessage(UIMessage uiMessage, nuint wParam, nuint lParam)
+    {
+        this.sendUiMessageHook.Continue(uiMessage, wParam, lParam);
+    }
+
+    private static unsafe void SetFrameVisibleInternal(WrappedPointer<Frame> frame, bool visible)
+    {
+        uint* pState = &frame.Pointer->Field91;   // direct field address
+        if (visible)
+        {
+            *pState &= ~0x200u;   // clear “hidden”
+        }
+        else
+        {
+            *pState |= 0x200u;   // set “hidden”
+        }
+            
+    }
+
+    private static unsafe void SetFrameDisabledInternal(WrappedPointer<Frame> frame, bool disabled)
+    {
+        uint* pState = &frame.Pointer->Field91;   // same word (offset 0x184)
+
+        if (disabled)
+        {
+            *pState |= 0x10u;    // set “disabled”
+        }
+        else
+        {
+            *pState &= ~0x10u;    // clear
+        }
+    }
+}

Daybreak.API/Services/MainPlayerService.cs

@@ -0,0 +1,590 @@
+using Daybreak.API.Extensions;
+using Daybreak.API.Interop.GuildWars;
+using Daybreak.API.Models;
+using Daybreak.API.Services.Interop;
+using Daybreak.Shared.Models;
+using Daybreak.Shared.Models.Api;
+using Daybreak.Shared.Models.Builds;
+using Daybreak.Shared.Services.BuildTemplates;
+using MemoryPack;
+using System.Buffers;
+using System.Collections.Concurrent;
+using System.Core.Extensions;
+using System.Extensions;
+using System.Extensions.Core;
+using System.Runtime.CompilerServices;
+using ZLinq;
+using InstanceType = Daybreak.API.Interop.GuildWars.InstanceType;
+
+namespace Daybreak.API.Services;
+
+public sealed class MainPlayerService : IDisposable
+{
+    private readonly InstanceContextService instanceContextService;
+    private readonly IBuildTemplateManager buildTemplateManager;
+    private readonly SkillbarContextService skillbarContextService;
+    private readonly AgentContextService agentContextService;
+    private readonly CallbackRegistration callbackRegistration;
+    private readonly GameContextService gameContextService;
+    private readonly GameThreadService gameThreadService;
+    private readonly ILogger<MainPlayerService> logger;
+
+    private readonly ConcurrentQueue<TaskCompletionSource<MainPlayerState>> pendingRequests = new();
+    private readonly ConcurrentDictionary<Guid, ByteConsumerEntry> consumers = new();
+    private readonly ArrayBufferWriter<byte> bufferWriter = new();
+
+    private TimeSpan minUpdateFrequency = TimeSpan.MaxValue;
+    private MainPlayerState? mainPlayerState;
+    private DateTimeOffset lastUpdateTime = DateTimeOffset.MinValue;
+    private DateTimeOffset lastFrequencyUpdate = DateTimeOffset.MinValue;
+
+    public MainPlayerService(
+        InstanceContextService instanceContextService,
+        IBuildTemplateManager buildTemplateManager,
+        SkillbarContextService skillbarContextService,
+        GameContextService gameContextService,
+        AgentContextService agentContextService,
+        GameThreadService gameThreadService,
+        ILogger<MainPlayerService> logger)
+    {
+        this.instanceContextService = instanceContextService.ThrowIfNull();
+        this.buildTemplateManager = buildTemplateManager.ThrowIfNull();
+        this.skillbarContextService = skillbarContextService.ThrowIfNull();
+        this.gameThreadService = gameThreadService.ThrowIfNull();
+        this.agentContextService = agentContextService.ThrowIfNull();
+        this.gameContextService = gameContextService.ThrowIfNull();
+        this.logger = logger.ThrowIfNull();
+        this.callbackRegistration = this.gameThreadService.RegisterCallback(this.OnGameThreadProc);
+    }
+
+    public void Dispose()
+    {
+        this.callbackRegistration?.Dispose();
+    }
+
+    public Task<bool> SetCurrentBuild(string buildCode, CancellationToken cancellationToken)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        if (!this.buildTemplateManager.TryDecodeTemplate(buildCode, out var build) ||
+            build is not SingleBuildEntry singleBuild)
+        {
+            scopedLogger.LogError("Failed to decode build template from code {buildCode}", buildCode);
+            return Task.FromResult(false);
+        }
+
+        return this.gameThreadService.QueueOnGameThread(() =>
+        {
+            unsafe
+            {
+                if (this.instanceContextService.GetInstanceType() is InstanceType.Loading or InstanceType.Explorable)
+                {
+                    scopedLogger.LogError("Not in outpost");
+                    return default;
+                }
+
+                var gameContext = this.gameContextService.GetGameContext();
+                if (gameContext.IsNull ||
+                    gameContext.Pointer->WorldContext is null)
+                {
+                    scopedLogger.LogError("Failed to get game context");
+                    return false;
+                }
+
+                var playerAgentId = this.agentContextService.GetPlayerAgentId();
+                if (playerAgentId is 0x0)
+                {
+                    scopedLogger.LogError("Failed to get player agent id");
+                    return false;
+                }
+
+                var playerAgent = this.GetAgentContext(playerAgentId);
+                if (playerAgent is null ||
+                    playerAgent->Type is not AgentType.Living ||
+                    playerAgent->AgentId != playerAgentId)
+                {
+                    scopedLogger.LogError("Player agent {playerAgentId} not found in agent array", playerAgentId);
+                    return false;
+                }
+
+                var livingAgent = (AgentLivingContext*)playerAgent;
+                if (livingAgent->Level != gameContext.Pointer->WorldContext->Level)
+                {
+                    scopedLogger.LogError("Player agent not found. Player level mismatch: {level} != {gameLevel}", livingAgent->Level, gameContext.Pointer->WorldContext->Level);
+                    return false;
+                }
+
+                var agentProfession = gameContext.Pointer->WorldContext->Professions.AsValueEnumerable().FirstOrDefault(p => p.AgentId == playerAgentId);
+                if (agentProfession.AgentId != playerAgentId)
+                {
+                    scopedLogger.LogError("Failed to find agent profession for player agent id {agentId}", playerAgentId);
+                    return false;
+                }
+
+                var validationRequest = new BuildTemplateValidationRequest(
+                    (uint)singleBuild.Primary.Id,
+                    (uint)singleBuild.Secondary.Id,
+                    singleBuild.Skills.AsValueEnumerable().Select(s => (uint)s.Id).ToArray(),
+                    livingAgent->Primary,
+                    agentProfession.UnlockedProfessionsFlags,
+                    [.. gameContext.Pointer->WorldContext->UnlockedCharacterSkills]);
+
+                if (!this.buildTemplateManager.CanTemplateApply(validationRequest))
+                {
+                    scopedLogger.LogError("Build template validation failed for player agent id {agentId}", playerAgentId);
+                    return false;
+                }
+
+                var attributeIds = new Array12Uint();
+                var attributeValues = new Array12Uint();
+                var skills = new Array8Uint();
+                for(var i = 0; i < singleBuild.Attributes.Count && i < 12; i++)
+                {
+                    if (singleBuild.Attributes[i].Attribute is null)
+                    {
+                        continue;
+                    }
+
+                    attributeIds[i] = (uint)singleBuild.Attributes[i].Attribute!.Id;
+                    attributeValues[i] = (uint)singleBuild.Attributes[i].Points;
+                }
+
+                for(var i =0; i < singleBuild.Skills.Count && i < 8; i++)
+                {
+                    skills[i] = (uint)singleBuild.Skills[i].Id;
+                }
+
+                var skillTemplate = new SkillTemplate(
+                    (uint)singleBuild.Primary.Id,
+                    (uint)singleBuild.Secondary.Id,
+                    (uint)Math.Min(singleBuild.Attributes.Count, 12),
+                    attributeIds,
+                    attributeValues,
+                    skills);
+
+                this.skillbarContextService.LoadBuild(playerAgentId, &skillTemplate);
+                return true;
+            }
+        }, cancellationToken);
+    }
+
+    public Task<BuildEntry?> GetCurrentBuild(CancellationToken cancellationToken)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        return this.gameThreadService.QueueOnGameThread(() =>
+        {
+            unsafe
+            {
+                if (this.instanceContextService.GetInstanceType() is InstanceType.Loading)
+                {
+                    scopedLogger.LogError("Not loaded");
+                    return default;
+                }
+
+                var gameContext = this.gameContextService.GetGameContext();
+                if (gameContext.IsNull)
+                {
+                    scopedLogger.LogError("Failed to get game context");
+                    return default;
+                }
+
+                var playerAgentId = this.agentContextService.GetPlayerAgentId();
+                if (playerAgentId is 0x0)
+                {
+                    scopedLogger.LogError("Failed to get player agent id");
+                    return default;
+                }
+
+                var skillbarContext = gameContext.Pointer->WorldContext->Skillbars.AsValueEnumerable().FirstOrDefault(s => s.AgentId == playerAgentId);
+                if (skillbarContext.AgentId != playerAgentId)
+                {
+                    scopedLogger.LogError("Failed to find skillbar context for player agent id {agentId}", playerAgentId);
+                    return default;
+                }
+
+                var agentAttributes = gameContext.Pointer->WorldContext->Attributes.AsValueEnumerable().FirstOrDefault(a => a.AgentId == playerAgentId);
+                if (agentAttributes.AgentId != playerAgentId)
+                {
+                    scopedLogger.LogError("Failed to find agent attributes for player agent id {agentId}", playerAgentId);
+                    return default;
+                }
+
+                var professionContext = gameContext.Pointer->WorldContext->Professions.AsValueEnumerable().FirstOrDefault(p => p.AgentId == playerAgentId);
+                if (professionContext.AgentId != playerAgentId)
+                {
+                    scopedLogger.LogError("Failed to find agent profession for player agent id {agentId}", playerAgentId);
+                    return default;
+                }
+
+                return new BuildEntry(
+                    (int)professionContext.CurrentPrimary,
+                    (int)professionContext.CurrentSecondary,
+                    agentAttributes.Attributes.GetAttributeEntryList(),
+                    [skillbarContext.Skill0.Id, skillbarContext.Skill1.Id, skillbarContext.Skill2.Id, skillbarContext.Skill3.Id,
+                    skillbarContext.Skill4.Id, skillbarContext.Skill5.Id, skillbarContext.Skill6.Id, skillbarContext.Skill7.Id]);
+            }
+        }, cancellationToken);
+    }
+
+    public Task<QuestLogInformation?> GetQuestLog(CancellationToken cancellationToken)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        return this.gameThreadService.QueueOnGameThread(() =>
+        {
+            unsafe
+            {
+                if (this.instanceContextService.GetInstanceType() is InstanceType.Loading)
+                {
+                    scopedLogger.LogError("Not loaded");
+                    return default;
+                }
+
+                var gameContext = this.gameContextService.GetGameContext();
+                if (gameContext.IsNull || gameContext.Pointer->WorldContext is null)
+                {
+                    scopedLogger.LogError("Game context is not initialized");
+                    return default;
+                }
+
+                return new QuestLogInformation(
+                    gameContext.Pointer->WorldContext->ActiveQuestId,
+                    gameContext.Pointer->WorldContext->QuestLog.AsValueEnumerable().Select(q => new QuestInformation(q.QuestId, q.MapFrom, q.MapTo)).ToList());
+            }
+        }, cancellationToken);
+    }
+
+    public Task<MainPlayerInformation?> GetMainPlayerInformation(CancellationToken cancellationToken)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        return this.gameThreadService.QueueOnGameThread(() =>
+        {
+            unsafe
+            {
+                if (this.instanceContextService.GetInstanceType() is InstanceType.Loading)
+                {
+                    scopedLogger.LogError("Not loaded");
+                    return default;
+                }
+
+                var gameContext = this.gameContextService.GetGameContext();
+                if (gameContext.IsNull || gameContext.Pointer->CharContext is null ||
+                    gameContext.Pointer->WorldContext is null)
+                {
+                    scopedLogger.LogError("Game context is not initialized");
+                    return default;
+                }
+
+                var playerNameSpan = gameContext.Pointer->CharContext->PlayerName.AsSpan();
+                var playerName = new string(playerNameSpan[..playerNameSpan.IndexOf('\0')]);
+                var emailSpan = gameContext.Pointer->CharContext->PlayerEmail.AsSpan();
+                var email = new string(emailSpan[..emailSpan.IndexOf('\0')]);
+                var accountName = new string(gameContext.Pointer->WorldContext->AccountInfo->AccountName);
+                return new MainPlayerInformation(
+                    gameContext.Pointer->CharContext->PlayerUuid.ToString(),
+                    email,
+                    playerName,
+                    accountName,
+                    gameContext.Pointer->WorldContext->AccountInfo->Wins,
+                    gameContext.Pointer->WorldContext->AccountInfo->Losses,
+                    gameContext.Pointer->WorldContext->AccountInfo->Rating,
+                    gameContext.Pointer->WorldContext->AccountInfo->QualifierPoints,
+                    gameContext.Pointer->WorldContext->AccountInfo->Rank,
+                    gameContext.Pointer->WorldContext->AccountInfo->TournamentRewardPoints);
+            }
+        }, cancellationToken);
+    }
+
+    public Task<MainPlayerState> GetMainPlayerState(CancellationToken cancellationToken)
+    {
+        var tcs = new TaskCompletionSource<MainPlayerState>();
+        if (cancellationToken.CanBeCanceled)
+        {
+            cancellationToken.Register(() => tcs.TrySetCanceled(cancellationToken));
+        }
+
+        this.pendingRequests.Enqueue(tcs);
+        return tcs.Task;
+    }
+
+    public Task<InstanceInfo> GetMainPlayerInstance(CancellationToken cancellationToken)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        return this.gameThreadService.QueueOnGameThread(() =>
+        {
+            unsafe
+            {
+                var instanceType = this.instanceContextService.GetInstanceType();
+                if (instanceType is InstanceType.Loading)
+                {
+                    return new InstanceInfo(0, 0, 0, 0, Shared.Models.Api.InstanceType.Loading, DistrictRegionInfo.Unknown, LanguageInfo.Unknown, CampaignInfo.Unknown, ContinentInfo.Unknown, RegionInfo.Unknown, DifficultyInfo.Unknown);
+                }
+
+                var gameContext = this.gameContextService.GetGameContext();
+                var instanceInfoContext = this.instanceContextService.GetInstanceInfoContext();
+                var serverRegion = this.instanceContextService.GetServerRegion();
+                if (gameContext.IsNull ||
+                    gameContext.Pointer->CharContext is null ||
+                    gameContext.Pointer->WorldContext is null ||
+                    gameContext.Pointer->PartyContext is null ||
+                    instanceInfoContext.IsNull)
+                {
+                    scopedLogger.LogError("Game context is not initialized");
+                    return new InstanceInfo(0, 0, 0, 0, Shared.Models.Api.InstanceType.Loading, DistrictRegionInfo.Unknown, LanguageInfo.Unknown, CampaignInfo.Unknown, ContinentInfo.Unknown, RegionInfo.Unknown, DifficultyInfo.Unknown);
+                }
+
+                var charContext = *gameContext.Pointer->CharContext;
+                var worldContext = *gameContext.Pointer->WorldContext;
+                var partyContext = *gameContext.Pointer->PartyContext;
+                var instanceInfo = *instanceInfoContext.Pointer;
+                var mapId = charContext.MapId;
+                var language = charContext.Language;
+                var districtNumber = charContext.DistrictNumber;
+                var foesKilled = worldContext.FoesKilled;
+                var foesToKill = worldContext.FoesToKill;
+
+                return new InstanceInfo(
+                    MapId: charContext.MapId,
+                    DistrictNumber: charContext.DistrictNumber,
+                    FoesKilled: worldContext.FoesKilled,
+                    FoesToKill: worldContext.FoesToKill,
+                    Type: (Shared.Models.Api.InstanceType)instanceType,
+                    DistrictRegion: (DistrictRegionInfo)serverRegion,
+                    Language: (LanguageInfo)charContext.Language,
+                    Campaign: (CampaignInfo)instanceInfo.CurrentMapInfo->Campaign,
+                    Continent: (ContinentInfo)instanceInfo.CurrentMapInfo->Continent,
+                    Region: (RegionInfo)instanceInfo.CurrentMapInfo->Region,
+                    Difficulty: partyContext.Flags.HasFlag(PartyFlags.HardMode) ? DifficultyInfo.Hard : DifficultyInfo.Normal);
+            }
+        }, cancellationToken);
+    }
+
+    public Task<TitleInfo?> GetTitleInfo(CancellationToken cancellationToken)
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        return this.gameThreadService.QueueOnGameThread(() =>
+        {
+            unsafe
+            {
+                if (this.instanceContextService.GetInstanceType() is InstanceType.Loading)
+                {
+                    scopedLogger.LogError("Not loaded");
+                    return default;
+                }
+
+                var gameContext = this.gameContextService.GetGameContext();
+                if (gameContext.IsNull || gameContext.Pointer->WorldContext is null)
+                {
+                    scopedLogger.LogError("Game context is not initialized");
+                    return default;
+                }
+
+                if (!gameContext.TryGetPlayerId(out var playerId))
+                {
+                    scopedLogger.LogError("Failed to get player id");
+                    return default;
+                }
+
+                var player = gameContext.Pointer->WorldContext->Players.AsValueEnumerable().FirstOrDefault(p => p.AgentId == playerId);
+                if (player.AgentId != playerId)
+                {
+                    scopedLogger.LogError("Failed to find player with id {playerId}", playerId);
+                    return default;
+                }
+
+                var currentTier = player.ActiveTitleTier;
+                TitleContext? currentTitle = default;
+                int? id = -1;
+                for(var i = 0; i < gameContext.Pointer->WorldContext->Titles.Size; i++)
+                {
+                    var title = gameContext.Pointer->WorldContext->Titles.Skip(i).FirstOrDefault();
+                    if (title.CurrentTitleTierIndex == currentTier)
+                    {
+                        currentTitle = title;
+                        id = i;
+                        break;
+                    }
+                }
+
+                if (!currentTitle.HasValue)
+                {
+                    scopedLogger.LogError("Failed to find current title with tier {currentTier}", currentTier);
+                    return default;
+                }
+
+                var titleTier = gameContext.Pointer->WorldContext->TitleTiers.Skip((int)currentTitle.Value.CurrentTitleTierIndex).FirstOrDefault();
+                return new TitleInfo
+                (
+                    Id: (uint)id,
+                    IsPercentage: currentTitle.Value.Props.HasFlag(TitleProps.PercentageBased),
+                    PointsForCurrentRank: currentTitle.Value.PointsNeededForCurrentRank,
+                    PointsForNextRank: titleTier.TierNumber == currentTitle.Value.MaxTitleRank ?
+                                        currentTitle.Value.CurrentPoints :
+                                        currentTitle.Value.PointsNeededForNextRank,
+                    CurrentPoints: currentTitle.Value.CurrentPoints,
+                    TierNumber: titleTier.TierNumber,
+                    MaxTierNumber: currentTitle.Value.MaxTitleTierIndex
+                );
+            }
+        }, cancellationToken);
+    }
+
+    public CallbackRegistration RegisterMainStateConsumer(TimeSpan frequency, Action<ReadOnlySpan<byte>> onUpdate)
+    {
+        ArgumentOutOfRangeException.ThrowIfLessThanOrEqual(frequency, TimeSpan.Zero);
+
+        var id = Guid.NewGuid();
+        var now = DateTimeOffset.UtcNow;
+        var entry = new ByteConsumerEntry(id, frequency, onUpdate);
+
+        this.consumers[id] = entry;
+        this.RecalculateMinFrequency();
+
+        return new CallbackRegistration(id, () =>
+        {
+            this.consumers.TryRemove(id, out _);
+            this.RecalculateMinFrequency();
+        });
+    }
+
+    private unsafe void OnGameThreadProc()
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        var now = DateTimeOffset.UtcNow;
+
+        /*
+         * Periodically adjust the frequency of updates based on connected clients.
+         * Sometimes clients crash and disconnect in a way that the server wasn't able
+         * to trigger a frequency recalculation, so this periodic recalculation should
+         * take care of inconsistent state.
+         */
+        if (now - this.lastFrequencyUpdate > TimeSpan.FromSeconds(10))
+        {
+            this.RecalculateMinFrequency();
+        }
+
+        /*
+         * Only rebuild the state when we do not have one yet or the shortest required frequency has elapsed.
+         * If we have any pending request (excluding consumers), we should also rebuild the state
+         * to return the latest data to the request
+         */
+        if (this.mainPlayerState is not null &&
+            this.minUpdateFrequency is TimeSpan minFreq &&
+            now - this.lastUpdateTime < minFreq &&
+            this.pendingRequests.IsEmpty)
+        {
+            return;
+        }
+
+        if (this.instanceContextService.GetInstanceType() is InstanceType.Loading)
+        {
+            scopedLogger.LogError("Not loaded");
+            return;
+        }
+
+        var gameContext = this.gameContextService.GetGameContext();
+        var agentArray = this.agentContextService.GetAgentArray();
+        var playerAgentId = this.agentContextService.GetPlayerAgentId();
+        if (gameContext.IsNull ||
+            gameContext.Pointer->WorldContext is null ||
+            gameContext.Pointer->CharContext is null ||
+            gameContext.Pointer->WorldContext->MapAgents.Buffer is null ||
+            agentArray.IsNull ||
+            agentArray.Pointer->Buffer is null ||
+            playerAgentId is 0x0)
+        {
+            scopedLogger.LogDebug("Game data is not yet initialized");
+            return;
+        }
+
+        var playerMapAgent = gameContext.Pointer->WorldContext->MapAgents.AsValueEnumerable().Skip((int)playerAgentId).FirstOrDefault();
+        var playerAgent = this.GetAgentContext(playerAgentId);
+        if (playerAgent is null ||
+            playerAgent->Type is not AgentType.Living ||
+            playerAgent->AgentId != playerAgentId)
+        {
+            scopedLogger.LogError("Player agent {playerAgentId} not found in agent array", playerAgentId);
+            return;
+        }
+
+        var livingAgent = (AgentLivingContext*)playerAgent;
+        if (livingAgent->Level != gameContext.Pointer->WorldContext->Level)
+        {
+            scopedLogger.LogError("Player agent not found. Player level mismatch: {level} != {gameLevel}", livingAgent->Level, gameContext.Pointer->WorldContext->Level);
+            return;
+        }
+
+        this.mainPlayerState = new MainPlayerState(
+            gameContext.Pointer->WorldContext->Experience,
+            gameContext.Pointer->WorldContext->Level,
+
+            gameContext.Pointer->WorldContext->CurrentLuxon,
+            gameContext.Pointer->WorldContext->CurrentKurzick,
+            gameContext.Pointer->WorldContext->CurrentImperial,
+            gameContext.Pointer->WorldContext->CurrentBalthazar,
+            gameContext.Pointer->WorldContext->MaxLuxon,
+            gameContext.Pointer->WorldContext->MaxKurzick,
+            gameContext.Pointer->WorldContext->MaxImperial,
+            gameContext.Pointer->WorldContext->MaxBalthazar,
+            gameContext.Pointer->WorldContext->TotalLuxon,
+            gameContext.Pointer->WorldContext->TotalKurzick,
+            gameContext.Pointer->WorldContext->TotalImperial,
+            gameContext.Pointer->WorldContext->TotalBalthazar,
+
+            // Energy and health are percentages of Max
+            livingAgent->Health * livingAgent->MaxHealth,
+            livingAgent->MaxHealth,
+            livingAgent->Energy * livingAgent->MaxEnergy,
+            livingAgent->MaxEnergy,
+
+            livingAgent->Primary,
+            livingAgent->Secondary,
+
+            playerAgent->Pos.X,
+            playerAgent->Pos.Y
+        );
+
+        this.bufferWriter.ResetWrittenCount();
+        MemoryPackSerializer.Serialize(this.bufferWriter, this.mainPlayerState);
+        this.lastUpdateTime = now;
+
+        while (this.pendingRequests.TryDequeue(out var tcs))
+        {
+            tcs.TrySetResult(this.mainPlayerState);
+        }
+
+        foreach (var kvp in this.consumers)
+        {
+            var entry = kvp.Value;
+            entry.TryConsume(now, this.bufferWriter.WrittenSpan);
+        }
+    }
+
+    private void RecalculateMinFrequency()
+    {
+        var scopedLogger = this.logger.CreateScopedLogger();
+        var noConsumers = this.consumers.IsEmpty;
+        if (noConsumers)
+        {
+            this.minUpdateFrequency = TimeSpan.MaxValue;
+            scopedLogger.LogDebug("No consumers registered, disabling updates");
+            this.lastFrequencyUpdate = DateTimeOffset.UtcNow;
+            return;
+        }
+
+        var minValue = this.consumers.Values.Min(c => c.Frequency);
+        scopedLogger.LogDebug("Adjusted update frequency to {frequency}", minValue);
+        this.lastFrequencyUpdate = DateTimeOffset.UtcNow;
+    }
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    private unsafe AgentContext* GetAgentContext(uint agentId)
+    {
+        var agentArray = this.agentContextService.GetAgentArray();
+        if (agentArray.IsNull || agentArray.Pointer->Buffer is null ||
+            agentArray.Pointer->Size <= agentId)
+        {
+            return null;
+        }
+
+        return agentArray.Pointer->Buffer[agentId].Pointer;
+    }
+}