WIP switch to ServicePoint2 library

tanks-backend/DisplayCommands/ByteGrid.cs

@@ -1,42 +0,0 @@
-using System.Diagnostics;
-
-namespace DisplayCommands;
-
-public sealed class ByteGrid(ushort width, ushort height) : IEquatable<ByteGrid>
-{
-    public ushort Height { get; } = height;
-
-    public ushort Width { get; } = width;
-
-    internal Memory<byte> Data { get; } = new byte[width * height].AsMemory();
-
-    public byte this[ushort x, ushort y]
-    {
-        get => Data.Span[GetIndex(x, y)];
-        set => Data.Span[GetIndex(x, y)] = value;
-    }
-
-    public bool Equals(ByteGrid? other)
-    {
-        if (ReferenceEquals(null, other)) return false;
-        if (ReferenceEquals(this, other)) return true;
-        return Height == other.Height && Width == other.Width && Data.Span.SequenceEqual(other.Data.Span);
-    }
-
-    private int GetIndex(ushort x, ushort y)
-    {
-        Debug.Assert(x < Width);
-        Debug.Assert(y < Height);
-        return x + y * Width;
-    }
-
-    public void Clear() => Data.Span.Clear();
-
-    public override bool Equals(object? obj) => ReferenceEquals(this, obj) || (obj is ByteGrid other && Equals(other));
-
-    public override int GetHashCode() => HashCode.Combine(Height, Width, Data);
-
-    public static bool operator ==(ByteGrid? left, ByteGrid? right) => Equals(left, right);
-
-    public static bool operator !=(ByteGrid? left, ByteGrid? right) => !Equals(left, right);
-}

tanks-backend/DisplayCommands/Cp437Grid.cs

@@ -1,71 +0,0 @@
-using System.Diagnostics;
-using System.Text;
-
-namespace DisplayCommands;
-
-public sealed class Cp437Grid(ushort width, ushort height) : IEquatable<Cp437Grid>
-{
-    private readonly ByteGrid _byteGrid = new(width, height);
-    private readonly Encoding _encoding = Encoding.GetEncoding(437);
-
-    public ushort Height { get; } = height;
-
-    public ushort Width { get; } = width;
-
-    internal Memory<byte> Data => _byteGrid.Data;
-
-    public char this[ushort x, ushort y]
-    {
-        get => ByteToChar(_byteGrid[x, y]);
-        set => _byteGrid[x, y] = CharToByte(value);
-    }
-
-    public string this[ushort row]
-    {
-        get
-        {
-            var rowStart = row * Width;
-            return _encoding.GetString(_byteGrid.Data[rowStart..(rowStart + Width)].Span);
-        }
-        set
-        {
-            ArgumentOutOfRangeException.ThrowIfGreaterThanOrEqual(row, Height, nameof(row));
-            ArgumentOutOfRangeException.ThrowIfGreaterThan(value.Length, Width, nameof(value));
-            ushort x = 0;
-            for (; x < value.Length; x++)
-                _byteGrid[x, row] = CharToByte(value[x]);
-            for (; x < Width; x++)
-                _byteGrid[x, row] = CharToByte(' ');
-        }
-    }
-
-    private byte CharToByte(char c)
-    {
-        ReadOnlySpan<char> valuesStr = stackalloc char[] { c };
-        Span<byte> convertedStr = stackalloc byte[1];
-        var consumed = _encoding.GetBytes(valuesStr, convertedStr);
-        Debug.Assert(consumed == 1);
-        return convertedStr[0];
-    }
-
-    private char ByteToChar(byte b)
-    {
-        ReadOnlySpan<byte> valueBytes = stackalloc byte[] { b };
-        Span<char> resultStr = stackalloc char[1];
-        var consumed = _encoding.GetChars(valueBytes, resultStr);
-        Debug.Assert(consumed == 1);
-        return resultStr[0];
-    }
-
-    public bool Equals(Cp437Grid? other)
-    {
-        if (ReferenceEquals(null, other)) return false;
-        if (ReferenceEquals(this, other)) return true;
-        return Height == other.Height && Width == other.Width && _byteGrid.Equals(other._byteGrid);
-    }
-
-    public override bool Equals(object? obj) => ReferenceEquals(this, obj) || (obj is Cp437Grid other && Equals(other));
-    public override int GetHashCode() => HashCode.Combine(_byteGrid, Height, Width);
-    public static bool operator ==(Cp437Grid? left, Cp437Grid? right) => Equals(left, right);
-    public static bool operator !=(Cp437Grid? left, Cp437Grid? right) => !Equals(left, right);
-}

tanks-backend/DisplayCommands/DisplayCommands.csproj

@@ -1,23 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-    <Import Project="../shared.props" />
-
-    <PropertyGroup>
-        <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-        <EnableConfigurationBindingGenerator>true</EnableConfigurationBindingGenerator>
-    </PropertyGroup>
-
-    <ItemGroup>
-        <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.0"/>
-        <PackageReference Include="Microsoft.Extensions.Options" Version="8.0.2"/>
-        <PackageReference Include="Microsoft.Extensions.Options.ConfigurationExtensions" Version="8.0.0"/>
-        <PackageReference Include="System.Text.Encoding.CodePages" Version="8.0.0"/>
-        <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="8.0.1"/>
-        <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="8.0.1"/>
-
-        <ProjectReference Include="../EndiannessSourceGenerator/EndiannessSourceGenerator.csproj"
-                          OutputItemType="Analyzer"
-                          ReferenceOutputAssembly="false"/>
-    </ItemGroup>
-
-</Project>

tanks-backend/DisplayCommands/DisplayExtensions.cs

@@ -1,25 +0,0 @@
-using System.Text;
-using DisplayCommands.Internals;
-using Microsoft.Extensions.Configuration;
-using Microsoft.Extensions.DependencyInjection;
-
-namespace DisplayCommands;
-
-public static class DisplayExtensions
-{
-    static DisplayExtensions()
-    {
-        Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
-    }
-
-    public static IServiceCollection AddDisplay(
-        this IServiceCollection services,
-        IConfigurationSection? configurationSection = null
-    )
-    {
-        services.AddSingleton<IDisplayConnection, DisplayConnection>();
-        if (configurationSection != null)
-            services.Configure<DisplayConfiguration>(configurationSection);
-        return services;
-    }
-}

tanks-backend/DisplayCommands/GlobalUsings.cs

@@ -1,2 +0,0 @@
-global using System;
-global using System.Threading.Tasks;

tanks-backend/DisplayCommands/IDisplayConnection.cs

@@ -1,24 +0,0 @@
-namespace DisplayCommands;
-
-public interface IDisplayConnection
-{
-    ValueTask SendClearAsync();
-
-    ValueTask SendCp437DataAsync(ushort x, ushort y, Cp437Grid grid);
-
-    ValueTask SendBrightnessAsync(byte brightness);
-
-    ValueTask SendCharBrightnessAsync(ushort x, ushort y, ByteGrid luma);
-
-    ValueTask SendHardResetAsync();
-
-    ValueTask SendFadeOutAsync(byte loops);
-
-    public ValueTask SendBitmapLinearWindowAsync(ushort x, ushort y, PixelGrid pixels);
-
-    /// <summary>
-    ///     Returns the IPv4 address that is associated with the interface with which the display is reachable.
-    /// </summary>
-    /// <returns>IPv4 as text</returns>
-    public string GetLocalIPv4();
-}

tanks-backend/DisplayCommands/Internals/DisplayCommand.cs

@@ -1,17 +0,0 @@
-namespace DisplayCommands.Internals;
-
-internal enum DisplayCommand : ushort
-{
-    Clear = 0x0002,
-    Cp437Data = 0x0003,
-    CharBrightness = 0x0005,
-    Brightness = 0x0007,
-    HardReset = 0x000b,
-    FadeOut = 0x000d,
-    [Obsolete("ignored by display code")] BitmapLegacy = 0x0010,
-    BitmapLinear = 0x0012,
-    BitmapLinearWin = 0x0013,
-    BitmapLinearAnd = 0x0014,
-    BitmapLinearOr = 0x0015,
-    BitmapLinearXor = 0x0016
-}

tanks-backend/DisplayCommands/Internals/DisplayConnection.cs

@@ -1,126 +0,0 @@
-using System.Buffers;
-using System.Diagnostics;
-using System.Net;
-using System.Net.Sockets;
-using System.Runtime.InteropServices;
-using Microsoft.Extensions.Options;
-
-namespace DisplayCommands.Internals;
-
-internal sealed class DisplayConnection(IOptions<DisplayConfiguration> options) : IDisplayConnection, IDisposable
-{
-    private readonly ArrayPool<byte> _arrayPool = ArrayPool<byte>.Shared;
-    private readonly UdpClient _udpClient = new(options.Value.Hostname, options.Value.Port);
-
-    public ValueTask SendClearAsync()
-    {
-        var header = new HeaderWindow { Command = (ushort)DisplayCommand.Clear };
-
-        return SendAsync(header, Memory<byte>.Empty);
-    }
-
-    public ValueTask SendCp437DataAsync(ushort x, ushort y, Cp437Grid grid)
-    {
-        var header = new HeaderWindow
-        {
-            Command = (ushort)DisplayCommand.Cp437Data,
-            Height = grid.Height,
-            Width = grid.Width,
-            PosX = x,
-            PosY = y
-        };
-
-        return SendAsync(header, grid.Data);
-    }
-
-    public ValueTask SendCharBrightnessAsync(ushort x, ushort y, ByteGrid luma)
-    {
-        var header = new HeaderWindow
-        {
-            Command = (ushort)DisplayCommand.CharBrightness,
-            PosX = x,
-            PosY = y,
-            Height = luma.Height,
-            Width = luma.Width
-        };
-
-        return SendAsync(header, luma.Data);
-    }
-
-    public async ValueTask SendBrightnessAsync(byte brightness)
-    {
-        var header = new HeaderWindow { Command = (ushort)DisplayCommand.Brightness };
-
-        var payloadBuffer = _arrayPool.Rent(1);
-        var payload = payloadBuffer.AsMemory(0, 1);
-        payload.Span[0] = brightness;
-
-        await SendAsync(header, payload);
-        _arrayPool.Return(payloadBuffer);
-    }
-
-    public ValueTask SendHardResetAsync()
-    {
-        var header = new HeaderWindow { Command = (ushort)DisplayCommand.HardReset };
-        return SendAsync(header, Memory<byte>.Empty);
-    }
-
-    public async ValueTask SendFadeOutAsync(byte loops)
-    {
-        var header = new HeaderWindow { Command = (ushort)DisplayCommand.FadeOut };
-
-        var payloadBuffer = _arrayPool.Rent(1);
-        var payload = payloadBuffer.AsMemory(0, 1);
-        payload.Span[0] = loops;
-
-        await SendAsync(header, payload);
-        _arrayPool.Return(payloadBuffer);
-    }
-
-    public ValueTask SendBitmapLinearWindowAsync(ushort x, ushort y, PixelGrid pixels)
-    {
-        var header = new HeaderWindow
-        {
-            Command = (ushort)DisplayCommand.BitmapLinearWin,
-            PosX = x,
-            PosY = y,
-            Width = (ushort)(pixels.Width / 8),
-            Height = pixels.Height
-        };
-
-        return SendAsync(header, pixels.Data);
-    }
-
-    public string GetLocalIPv4()
-    {
-        using var socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, 0);
-        socket.Connect(options.Value.Hostname, options.Value.Port);
-        var endPoint = socket.LocalEndPoint as IPEndPoint ?? throw new NotSupportedException();
-        return endPoint.Address.ToString();
-    }
-
-    private async ValueTask SendAsync(HeaderWindow header, Memory<byte> payload)
-    {
-        int headerSize;
-        unsafe
-        {
-            // because we specified the struct layout, no platform-specific padding will be added and this is be safe.
-            headerSize = sizeof(HeaderWindow);
-        }
-
-        Debug.Assert(headerSize == 10);
-        var messageSize = headerSize + payload.Length;
-
-        var buffer = _arrayPool.Rent(messageSize);
-        var message = buffer.AsMemory(0, messageSize);
-
-        MemoryMarshal.Write(message.Span, header);
-        payload.CopyTo(message[headerSize..]);
-
-        await _udpClient.SendAsync(message);
-
-        _arrayPool.Return(buffer);
-    }
-
-    public void Dispose() => _udpClient.Dispose();
-}

tanks-backend/DisplayCommands/Internals/DisplaySubCommand.cs

@@ -1,10 +0,0 @@
-namespace DisplayCommands.Internals;
-
-internal enum DisplaySubCommand : ushort
-{
-    BitmapNormal = 0x0,
-    BitmapCompressZ = 0x677a,
-    BitmapCompressBz = 0x627a,
-    BitmapCompressLz = 0x6c7a,
-    BitmapCompressZs = 0x7a73
-}

tanks-backend/DisplayCommands/Internals/HeaderBitmap.cs

@@ -1,19 +0,0 @@
-using System.Runtime.InteropServices;
-using EndiannessSourceGenerator;
-
-namespace DisplayCommands.Internals;
-
-[StructEndianness(IsLittleEndian = false)]
-[StructLayout(LayoutKind.Sequential, Pack = 16, Size = 10)]
-internal partial struct HeaderBitmap
-{
-    private ushort _command;
-
-    private ushort _offset;
-
-    private ushort _length;
-
-    private ushort _subCommand;
-
-    private ushort _reserved;
-}

tanks-backend/DisplayCommands/Internals/HeaderWindow.cs

@@ -1,19 +0,0 @@
-using System.Runtime.InteropServices;
-using EndiannessSourceGenerator;
-
-namespace DisplayCommands.Internals;
-
-[StructEndianness(IsLittleEndian = false)]
-[StructLayout(LayoutKind.Sequential, Pack = 16, Size = 10)]
-internal partial struct HeaderWindow
-{
-    private ushort _command;
-
-    private ushort _posX;
-
-    private ushort _posY;
-
-    private ushort _width;
-
-    private ushort _height;
-}

tanks-backend/DisplayCommands/PixelGrid.cs

@@ -1,59 +0,0 @@
-using System.Diagnostics;
-
-namespace DisplayCommands;
-
-public sealed class PixelGrid(ushort width, ushort height) : IEquatable<PixelGrid>
-{
-    private readonly ByteGrid _byteGrid = new((ushort)(width / 8u), height);
-
-    public ushort Width { get; } = width;
-
-    public ushort Height { get; } = height;
-
-    public Memory<byte> Data => _byteGrid.Data;
-
-    public bool this[ushort x, ushort y]
-    {
-        get
-        {
-            Debug.Assert(y < Height);
-            var (byteIndex, bitInByteMask) = GetIndexes(x);
-            var byteVal = _byteGrid[byteIndex, y];
-            return (byteVal & bitInByteMask) != 0;
-        }
-        set
-        {
-            Debug.Assert(y < Height);
-            var (byteIndex, bitInByteMask) = GetIndexes(x);
-            if (value)
-                _byteGrid[byteIndex, y] |= bitInByteMask;
-            else
-                _byteGrid[byteIndex, y] &= (byte)(ushort.MaxValue ^ bitInByteMask);
-        }
-    }
-
-    public void Clear() => _byteGrid.Clear();
-
-    public bool Equals(PixelGrid? other)
-    {
-        if (ReferenceEquals(null, other)) return false;
-        if (ReferenceEquals(this, other)) return true;
-        return Width == other.Width && Height == other.Height && _byteGrid.Equals(other._byteGrid);
-    }
-
-    public override bool Equals(object? obj) => ReferenceEquals(this, obj) || (obj is PixelGrid other && Equals(other));
-    public override int GetHashCode() => HashCode.Combine(_byteGrid, Width, Height);
-    public static bool operator ==(PixelGrid? left, PixelGrid? right) => Equals(left, right);
-    public static bool operator !=(PixelGrid? left, PixelGrid? right) => !Equals(left, right);
-
-    private (ushort byteIndex, byte bitInByteMask) GetIndexes(int x)
-    {
-        Debug.Assert(x < Width);
-        var byteIndex = (ushort)(x / 8);
-        Debug.Assert(byteIndex < Width);
-        var bitInByteIndex = (byte)(7 - x % 8);
-        Debug.Assert(bitInByteIndex < 8);
-        var bitInByteMask = (byte)(1 << bitInByteIndex);
-        return (byteIndex, bitInByteMask);
-    }
-}

tanks-backend/EndiannessSourceGenerator/EndiannessGenerator.cs

@@ -1,260 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using Microsoft.CodeAnalysis;
-using Microsoft.CodeAnalysis.CSharp;
-using Microsoft.CodeAnalysis.CSharp.Syntax;
-using Microsoft.CodeAnalysis.Text;
-using static Microsoft.CodeAnalysis.CSharp.SyntaxFactory;
-
-namespace EndiannessSourceGenerator;
-
-internal class DebugMeException(string message) : Exception(message);
-
-internal class InvalidUsageException(string message) : Exception(message);
-
-[Generator]
-public class StructEndiannessSourceGenerator : ISourceGenerator
-{
-    private const string Namespace = "EndiannessSourceGenerator";
-    private const string AttributeName = "StructEndiannessAttribute";
-    private const string IsLittleEndianProperty = "IsLittleEndian";
-
-    private const string AttributeSourceCode =
-        $$"""
-          // <auto-generated/>
-          namespace {{Namespace}}
-          {
-              [System.AttributeUsage(System.AttributeTargets.Struct)]
-              public class {{AttributeName}}: System.Attribute
-              {
-                  public required bool {{IsLittleEndianProperty}} { get; init; }
-              }
-          }
-          """;
-
-    public void Initialize(GeneratorInitializationContext context)
-    {
-        // Register the attribute source
-        context.RegisterForPostInitialization(i => i.AddSource($"{AttributeName}.g.cs", AttributeSourceCode));
-    }
-
-    public void Execute(GeneratorExecutionContext context)
-    {
-        var treesWithStructsWithAttributes = context.Compilation.SyntaxTrees
-            .Where(st => st.GetRoot().DescendantNodes()
-                .OfType<StructDeclarationSyntax>()
-                .Any(p => p.DescendantNodes()
-                    .OfType<AttributeSyntax>()
-                    .Any()))
-            .ToList();
-
-        foreach (var tree in treesWithStructsWithAttributes)
-        {
-            var semanticModel = context.Compilation.GetSemanticModel(tree);
-
-            var structsWithAttributes = tree.GetRoot().DescendantNodes()
-                .OfType<StructDeclarationSyntax>()
-                .Where(cd => cd.DescendantNodes()
-                    .OfType<AttributeSyntax>()
-                    .Any());
-
-            foreach (var structDeclaration in structsWithAttributes)
-            {
-                var foundAttribute = GetEndiannessAttribute(structDeclaration, semanticModel);
-                if (foundAttribute == null)
-                    continue; // not my type
-
-                var structIsLittleEndian = GetStructIsLittleEndian(foundAttribute);
-                HandleStruct(context, structDeclaration, semanticModel, structIsLittleEndian);
-            }
-        }
-    }
-
-    private static void HandleStruct(GeneratorExecutionContext context, TypeDeclarationSyntax structDeclaration,
-        SemanticModel semanticModel, bool structIsLittleEndian)
-    {
-        var isPartial = structDeclaration.Modifiers.Any(m => m.IsKind(SyntaxKind.PartialKeyword));
-        if (!isPartial)
-            throw new InvalidUsageException("struct is not marked partial");
-
-        var accessibilityModifier = structDeclaration.Modifiers.Any(m => m.IsKind(SyntaxKind.InternalKeyword))
-            ? Token(SyntaxKind.InternalKeyword)
-            : Token(SyntaxKind.PublicKeyword);
-
-        var structType = semanticModel.GetDeclaredSymbol(structDeclaration);
-        if (structType == null)
-            throw new DebugMeException("struct type info is null");
-
-        var structNamespace = structType.ContainingNamespace?.ToDisplayString();
-        if (structNamespace == null)
-            throw new InvalidUsageException("struct has to be contained in a namespace");
-
-        if (structDeclaration.Members.Any(m => m.IsKind(SyntaxKind.PropertyDeclaration)))
-            throw new InvalidUsageException("struct cannot have properties");
-
-        var fieldDeclarations = structDeclaration.Members
-            .Where(m => m.IsKind(SyntaxKind.FieldDeclaration)).OfType<FieldDeclarationSyntax>();
-
-        var generatedCode = CompilationUnit()
-            .WithUsings(List<UsingDirectiveSyntax>([
-                UsingDirective(IdentifierName("System")),
-                UsingDirective(IdentifierName("System.Buffers.Binary"))
-            ]))
-            .WithMembers(List<MemberDeclarationSyntax>([
-                FileScopedNamespaceDeclaration(IdentifierName(structNamespace)),
-                StructDeclaration(structType.Name)
-                    .WithModifiers(TokenList([accessibilityModifier, Token(SyntaxKind.PartialKeyword)]))
-                    .WithMembers(GenerateStructProperties(fieldDeclarations, semanticModel, structIsLittleEndian))
-            ]))
-            .NormalizeWhitespace()
-            .ToFullString();
-
-        context.AddSource(
-            $"{structNamespace}.{structType.Name}.g.cs",
-            SourceText.From(generatedCode, Encoding.UTF8)
-        );
-    }
-
-    private static SyntaxList<MemberDeclarationSyntax> GenerateStructProperties(
-        IEnumerable<FieldDeclarationSyntax> fieldDeclarations, SemanticModel semanticModel, bool structIsLittleEndian)
-    {
-        var result = new List<MemberDeclarationSyntax>();
-        foreach (var field in fieldDeclarations)
-        {
-            if (!field.Modifiers.Any(m => m.IsKind(SyntaxKind.PrivateKeyword)))
-                throw new InvalidUsageException("fields have to be private");
-
-            var variableDeclaration = field.DescendantNodes()
-                .OfType<VariableDeclarationSyntax>()
-                .FirstOrDefault();
-            if (variableDeclaration == null)
-                throw new DebugMeException("variable declaration of field declaration null");
-
-            var variableTypeInfo = semanticModel.GetTypeInfo(variableDeclaration.Type).Type;
-            if (variableTypeInfo == null)
-                throw new DebugMeException("variable type info of field declaration null");
-
-            var typeName = variableTypeInfo.ToDisplayString();
-            var fieldName = variableDeclaration.Variables.First().Identifier.ToString();
-
-            result.Add(GenerateProperty(typeName, structIsLittleEndian, fieldName));
-        }
-
-        return new SyntaxList<MemberDeclarationSyntax>(result);
-    }
-
-    private static PropertyDeclarationSyntax GenerateProperty(string typeName,
-        bool structIsLittleEndian, string fieldName)
-    {
-        var propertyName = GeneratePropertyName(fieldName);
-        var fieldIdentifier = IdentifierName(fieldName);
-
-        ExpressionSyntax condition = MemberAccessExpression(
-            kind: SyntaxKind.SimpleMemberAccessExpression,
-            expression: IdentifierName("BitConverter"),
-            name: IdentifierName("IsLittleEndian")
-        );
-
-        if (!structIsLittleEndian)
-            condition = PrefixUnaryExpression(SyntaxKind.LogicalNotExpression, condition);
-
-        var reverseEndiannessMethod = MemberAccessExpression(
-            kind: SyntaxKind.SimpleMemberAccessExpression,
-            expression: IdentifierName("BinaryPrimitives"),
-            name: IdentifierName("ReverseEndianness")
-        );
-
-        var valueIdentifier = IdentifierName("value");
-
-        return PropertyDeclaration(ParseTypeName(typeName), propertyName)
-            .WithModifiers(TokenList([Token(SyntaxKind.PublicKeyword)]))
-            .WithAccessorList(AccessorList(List<AccessorDeclarationSyntax>([
-                    AccessorDeclaration(SyntaxKind.GetAccessorDeclaration)
-                        .WithExpressionBody(ArrowExpressionClause(ConditionalExpression(
-                            condition: condition,
-                            whenTrue: fieldIdentifier,
-                            whenFalse: InvocationExpression(
-                                expression: reverseEndiannessMethod,
-                                argumentList: ArgumentList(SingletonSeparatedList(
-                                    Argument(fieldIdentifier)
-                                ))
-                            )
-                        )))
-                        .WithSemicolonToken(Token(SyntaxKind.SemicolonToken)),
-                    AccessorDeclaration(SyntaxKind.SetAccessorDeclaration)
-                        .WithExpressionBody(ArrowExpressionClause(AssignmentExpression(
-                            kind: SyntaxKind.SimpleAssignmentExpression,
-                            left: fieldIdentifier,
-                            right: ConditionalExpression(
-                                condition: condition,
-                                whenTrue: valueIdentifier,
-                                whenFalse: InvocationExpression(
-                                    expression: reverseEndiannessMethod,
-                                    argumentList: ArgumentList(SingletonSeparatedList(
-                                        Argument(valueIdentifier)
-                                    ))
-                                )
-                            )
-                        )))
-                        .WithSemicolonToken(Token(SyntaxKind.SemicolonToken))
-                ]))
-            );
-    }
-
-    private static SyntaxToken GeneratePropertyName(string fieldName)
-    {
-        var propertyName = fieldName;
-        if (propertyName.StartsWith("_"))
-            propertyName = propertyName.Substring(1);
-        if (!char.IsLetter(propertyName, 0) || char.IsUpper(propertyName, 0))
-            throw new InvalidUsageException("field names have to start with a lower case letter");
-        propertyName = propertyName.Substring(0, 1).ToUpperInvariant()
-                       + propertyName.Substring(1);
-        return Identifier(propertyName);
-    }
-
-    private static AttributeSyntax? GetEndiannessAttribute(SyntaxNode structDeclaration, SemanticModel semanticModel)
-    {
-        AttributeSyntax? foundAttribute = null;
-        foreach (var attributeSyntax in structDeclaration.DescendantNodes().OfType<AttributeSyntax>())
-        {
-            var attributeTypeInfo = semanticModel.GetTypeInfo(attributeSyntax).Type;
-            if (attributeTypeInfo == null)
-                throw new DebugMeException("attribute type info is null");
-
-            if (attributeTypeInfo.ContainingNamespace?.Name != Namespace)
-                continue;
-            if (attributeTypeInfo.Name != AttributeName)
-                continue;
-
-            foundAttribute = attributeSyntax;
-            break;
-        }
-
-        return foundAttribute;
-    }
-
-    private static bool GetStructIsLittleEndian(AttributeSyntax foundAttribute)
-    {
-        var endiannessArguments = foundAttribute.ArgumentList;
-        if (endiannessArguments == null)
-            throw new InvalidUsageException("endianness attribute has no arguments");
-
-        var isLittleEndianArgumentSyntax = endiannessArguments.Arguments
-            .FirstOrDefault(argumentSyntax =>
-                argumentSyntax.NameEquals?.Name.Identifier.ToString() == IsLittleEndianProperty);
-        if (isLittleEndianArgumentSyntax == null)
-            throw new InvalidUsageException("endianness attribute argument not found");
-
-        bool? structIsLittleEndian = isLittleEndianArgumentSyntax.Expression.Kind() switch
-        {
-            SyntaxKind.FalseLiteralExpression => false,
-            SyntaxKind.TrueLiteralExpression => true,
-            SyntaxKind.DefaultLiteralExpression => false,
-            _ => throw new InvalidUsageException($"{IsLittleEndianProperty} has to be set with a literal")
-        };
-        return structIsLittleEndian.Value;
-    }
-}

tanks-backend/EndiannessSourceGenerator/EndiannessSourceGenerator.csproj

@@ -1,25 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-    <Import Project="../shared.props" />
-
-    <PropertyGroup>
-        <TargetFramework>netstandard2.0</TargetFramework>
-        <IsPackable>false</IsPackable>
-        <Nullable>enable</Nullable>
-        <LangVersion>latest</LangVersion>
-
-        <EnforceExtendedAnalyzerRules>true</EnforceExtendedAnalyzerRules>
-        <IsRoslynComponent>true</IsRoslynComponent>
-        <PackageId>EndiannessSourceGenerator</PackageId>
-        <IsAotCompatible>false</IsAotCompatible>
-    </PropertyGroup>
-
-    <ItemGroup>
-        <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.4">
-            <PrivateAssets>all</PrivateAssets>
-            <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
-        </PackageReference>
-        <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.9.2" PrivateAssets="all" />
-    </ItemGroup>
-
-</Project>

tanks-backend/EndiannessSourceGenerator/Properties/launchSettings.json

@@ -1,9 +0,0 @@
-{
-    "$schema": "http://json.schemastore.org/launchsettings.json",
-    "profiles": {
-        "Generators": {
-            "commandName": "DebugRoslynComponent",
-            "targetProject": "../DisplayCommands/DisplayCommands.csproj"
-        }
-    }
-}

tanks-backend/EndiannessSourceGenerator/Readme.md

@@ -1,5 +0,0 @@
-# Endianness Source Generator
-
-When annotating a struct with the `StructEndianness` attribute, this code generator will generate properties for the declared fields.
-
-Each time a property is read or written, the endianness is converted from runtime endianness to struct endianness or vice-versa.

tanks-backend/TanksServer.sln

@@ -2,10 +2,6 @@
 Microsoft Visual Studio Solution File, Format Version 12.00
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TanksServer", "TanksServer\TanksServer.csproj", "{D88BF376-47A4-4C72-ADD1-983F9285C351}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DisplayCommands", "DisplayCommands\DisplayCommands.csproj", "{B4B43561-7A2C-486B-99F7-E58A67BC370A}"
-EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "EndiannessSourceGenerator", "EndiannessSourceGenerator\EndiannessSourceGenerator.csproj", "{D77FE880-F2B8-43B6-8B33-B6FA089CC337}"
-EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "shared", "shared", "{12DB7D48-1BB2-488B-B4D9-4126087D2F8C}"
 	ProjectSection(SolutionItems) = preProject
 		global.json = global.json
@@ -13,6 +9,8 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "shared", "shared", "{12DB7D
 		Dockerfile = Dockerfile
 	EndProjectSection
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ServicePoint2", "..\..\servicepoint2\servicepoint2-binding-cs\ServicePoint2\ServicePoint2.csproj", "{BC27CED4-82FE-4CD4-B784-B7596586801D}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -23,13 +21,9 @@ Global
 		{D88BF376-47A4-4C72-ADD1-983F9285C351}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{D88BF376-47A4-4C72-ADD1-983F9285C351}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{D88BF376-47A4-4C72-ADD1-983F9285C351}.Release|Any CPU.Build.0 = Release|Any CPU
-		{B4B43561-7A2C-486B-99F7-E58A67BC370A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{BC27CED4-82FE-4CD4-B784-B7596586801D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{B4B43561-7A2C-486B-99F7-E58A67BC370A}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{BC27CED4-82FE-4CD4-B784-B7596586801D}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{B4B43561-7A2C-486B-99F7-E58A67BC370A}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{BC27CED4-82FE-4CD4-B784-B7596586801D}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{B4B43561-7A2C-486B-99F7-E58A67BC370A}.Release|Any CPU.Build.0 = Release|Any CPU
+		{BC27CED4-82FE-4CD4-B784-B7596586801D}.Release|Any CPU.Build.0 = Release|Any CPU
-		{D77FE880-F2B8-43B6-8B33-B6FA089CC337}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{D77FE880-F2B8-43B6-8B33-B6FA089CC337}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{D77FE880-F2B8-43B6-8B33-B6FA089CC337}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{D77FE880-F2B8-43B6-8B33-B6FA089CC337}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 EndGlobal

tanks-backend/TanksServer/Endpoints.cs

@@ -1,13 +1,13 @@
 using System.IO;
 using System.Text;
 using System.Text.Json;
-using DisplayCommands;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Diagnostics.HealthChecks;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Http.HttpResults;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Diagnostics.HealthChecks;
+using ServicePoint2;
 using TanksServer.GameLogic;
 using TanksServer.Interactivity;
 
@@ -19,7 +19,7 @@ internal sealed class Endpoints(
     ControlsServer controlsServer,
     MapService mapService,
     ChangeToRequestedMap changeToRequestedMap,
-    IDisplayConnection displayConnection
+    Connection displayConnection
 )
 {
     public void Map(WebApplication app)
@@ -31,7 +31,7 @@ internal sealed class Endpoints(
         app.Map("/controls", ConnectControlsAsync);
         app.MapGet("/map", () => mapService.MapNames);
         app.MapPost("/map", PostMap);
-        app.MapPost("/resetDisplay", displayConnection.SendHardResetAsync);
+        app.MapPost("/resetDisplay", () => displayConnection.Send(Command.HardReset()));
         app.MapGet("/map/{name}", GetMapByName);
 
         app.MapHealthChecks("/health", new HealthCheckOptions
@@ -117,7 +117,7 @@ internal sealed class Endpoints(
         if (!mapService.TryGetPreview(name, out var preview))
             return TypedResults.NotFound();
 
-        var mapInfo = new MapInfo(prototype.Name, prototype.GetType().Name, preview.Data);
+        var mapInfo = new MapInfo(prototype.Name, prototype.GetType().Name, preview.Data.ToArray());
         return TypedResults.Ok(mapInfo);
     }
 

tanks-backend/TanksServer/GameLogic/MapService.cs

@@ -1,7 +1,7 @@
 using System.Diagnostics;
 using System.Diagnostics.CodeAnalysis;
 using System.IO;
-using DisplayCommands;
+using ServicePoint2;
 using TanksServer.Graphics;
 
 namespace TanksServer.GameLogic;
@@ -42,7 +42,7 @@ internal sealed class MapService
         if (!_mapPrototypes.TryGetValue(name, out var prototype))
             return false; // name not found
 
-        pixelGrid = new PixelGrid(PixelsPerRow, PixelsPerColumn);
+        pixelGrid = PixelGrid.New(PixelsPerRow, PixelsPerColumn);
         DrawMapStep.Draw(pixelGrid, prototype.CreateInstance());
 
         _mapPreviews.TryAdd(name, pixelGrid); // another thread may have added the map already

tanks-backend/TanksServer/GameLogic/SpawnPowerUp.cs

@@ -1,5 +1,3 @@
-using System.Diagnostics;
-
 namespace TanksServer.GameLogic;
 
 internal sealed class SpawnPowerUp(

tanks-backend/TanksServer/Graphics/DrawMapStep.cs

@@ -1,4 +1,4 @@
-using DisplayCommands;
+using ServicePoint2;
 using TanksServer.GameLogic;
 
 namespace TanksServer.Graphics;

tanks-backend/TanksServer/Graphics/GeneratePixelsTickStep.cs

@@ -1,4 +1,4 @@
-using DisplayCommands;
+using ServicePoint2;
 using TanksServer.GameLogic;
 using TanksServer.Interactivity;
 
@@ -10,9 +10,9 @@ internal sealed class GeneratePixelsTickStep(
 ) : ITickStep
 {
     private GamePixelGrid _lastGamePixelGrid = new(MapService.PixelsPerRow, MapService.PixelsPerColumn);
-    private PixelGrid _lastObserverPixelGrid = new(MapService.PixelsPerRow, MapService.PixelsPerColumn);
+    private PixelGrid _lastObserverPixelGrid = PixelGrid.New(MapService.PixelsPerRow, MapService.PixelsPerColumn);
     private GamePixelGrid _gamePixelGrid = new(MapService.PixelsPerRow, MapService.PixelsPerColumn);
-    private PixelGrid _observerPixelGrid = new(MapService.PixelsPerRow, MapService.PixelsPerColumn);
+    private PixelGrid _observerPixelGrid = PixelGrid.New(MapService.PixelsPerRow, MapService.PixelsPerColumn);
 
     private readonly List<IDrawStep> _drawSteps = drawSteps.ToList();
     private readonly List<IFrameConsumer> _consumers = consumers.ToList();
@@ -20,7 +20,7 @@ internal sealed class GeneratePixelsTickStep(
     public async ValueTask TickAsync(TimeSpan _)
     {
         Draw(_gamePixelGrid, _observerPixelGrid);
-        if (_observerPixelGrid.Data.Span.SequenceEqual(_lastObserverPixelGrid.Data.Span))
+        if (_observerPixelGrid.Data.SequenceEqual(_lastObserverPixelGrid.Data))
             return;
 
         await _consumers.Select(c => c.OnFrameDoneAsync(_gamePixelGrid, _observerPixelGrid))
@@ -36,7 +36,7 @@ internal sealed class GeneratePixelsTickStep(
         foreach (var step in _drawSteps)
             step.Draw(gamePixelGrid);
 
-        observerPixelGrid.Clear();
+        observerPixelGrid.Fill(false);
         for (var y = 0; y < MapService.PixelsPerColumn; y++)
         for (var x = 0; x < MapService.PixelsPerRow; x++)
         {

tanks-backend/TanksServer/Graphics/IFrameConsumer.cs

@@ -1,4 +1,4 @@
-using DisplayCommands;
+using ServicePoint2;
 
 namespace TanksServer.Graphics;
 

tanks-backend/TanksServer/Interactivity/ClientScreenServer.cs

@@ -1,5 +1,5 @@
 using System.Net.WebSockets;
-using DisplayCommands;
+using ServicePoint2;
 using TanksServer.Graphics;
 
 namespace TanksServer.Interactivity;

tanks-backend/TanksServer/Interactivity/ClientScreenServerConnection.cs

@@ -1,6 +1,6 @@
 using System.Buffers;
 using System.Net.WebSockets;
-using DisplayCommands;
+using ServicePoint2;
 using TanksServer.Graphics;
 
 namespace TanksServer.Interactivity;
@@ -36,8 +36,9 @@ internal sealed class ClientScreenServerConnection
 
     private Package BuildNextPackage(PixelGrid pixels, GamePixelGrid gamePixelGrid)
     {
-        var nextPixels = _bufferPool.Rent(pixels.Data.Length);
+        var pixelsData = pixels.Data;
-        pixels.Data.CopyTo(nextPixels.Memory);
+        var nextPixels = _bufferPool.Rent(pixelsData.Length);
+        pixelsData.CopyTo(nextPixels.Memory.Span);
 
         if (_playerDataBuilder == null)
             return new Package(nextPixels, null);

tanks-backend/TanksServer/Interactivity/PlayerInfoConnection.cs

@@ -13,7 +13,7 @@ internal sealed class PlayerInfoConnection
     private readonly MapEntityManager _entityManager;
     private readonly BufferPool _bufferPool;
     private readonly MemoryStream _tempStream = new();
-    private IMemoryOwner<byte>? _lastMessage = null;
+    private IMemoryOwner<byte>? _lastMessage;
 
     public PlayerInfoConnection(
         Player player,

tanks-backend/TanksServer/Interactivity/SendToServicePointDisplay.cs

@@ -1,6 +1,7 @@
 using System.Diagnostics;
+using System.Net;
 using System.Net.Sockets;
-using DisplayCommands;
+using ServicePoint2;
 using TanksServer.GameLogic;
 using TanksServer.Graphics;
 
@@ -12,11 +13,11 @@ internal sealed class SendToServicePointDisplay : IFrameConsumer
     private const int ScoresHeight = 20;
     private const int ScoresPlayerRows = ScoresHeight - 6;
 
-    private readonly IDisplayConnection _displayConnection;
+    private readonly Connection _displayConnection;
     private readonly MapService _mapService;
     private readonly ILogger<SendToServicePointDisplay> _logger;
     private readonly PlayerServer _players;
-    private readonly Cp437Grid _scoresBuffer;
+    private readonly ByteGrid _scoresBuffer;
     private readonly TimeSpan _minFrameTime;
     private readonly IOptionsMonitor<HostConfiguration> _options;
 
@@ -26,11 +27,11 @@ internal sealed class SendToServicePointDisplay : IFrameConsumer
     public SendToServicePointDisplay(
         PlayerServer players,
         ILogger<SendToServicePointDisplay> logger,
-        IDisplayConnection displayConnection,
+        Connection displayConnection,
         IOptions<HostConfiguration> hostOptions,
         MapService mapService,
-        IOptionsMonitor<HostConfiguration> options
+        IOptionsMonitor<HostConfiguration> options,
-    )
+        IOptions<DisplayConfiguration> displayConfig)
     {
         _players = players;
         _logger = logger;
@@ -39,16 +40,15 @@ internal sealed class SendToServicePointDisplay : IFrameConsumer
         _minFrameTime = TimeSpan.FromMilliseconds(hostOptions.Value.ServicePointDisplayMinFrameTimeMs);
         _options = options;
 
-        var localIp = _displayConnection.GetLocalIPv4().Split('.');
+        var localIp = GetLocalIPv4(displayConfig.Value).Split('.');
         Debug.Assert(localIp.Length == 4);
-        _scoresBuffer = new Cp437Grid(12, 20)
+        _scoresBuffer = ByteGrid.New(12, 20);
-        {
+
-            [00] = "== TANKS! ==",
+        _scoresBuffer[00] = "== TANKS! ==";
-            [01] = "-- scores --",
+        _scoresBuffer[01] = "-- scores --";
-            [17] = "--  join  --",
+        _scoresBuffer[17] = "--  join  --";
-            [18] = string.Join('.', localIp[..2]),
+        _scoresBuffer[18] = string.Join('.', localIp[..2]);
-            [19] = string.Join('.', localIp[2..])
+        _scoresBuffer[19] = string.Join('.', localIp[2..]);
-        };
     }
 
     public async Task OnFrameDoneAsync(GamePixelGrid gamePixelGrid, PixelGrid observerPixels)
@@ -66,8 +66,8 @@ internal sealed class SendToServicePointDisplay : IFrameConsumer
 
         try
         {
-            await _displayConnection.SendBitmapLinearWindowAsync(0, 0, observerPixels);
+            _displayConnection.Send(Command.BitmapLinearWin(0, 0, observerPixels.Clone()));
-            await _displayConnection.SendCp437DataAsync(MapService.TilesPerRow, 0, _scoresBuffer);
+            _displayConnection.Send(Command.Cp437Data(MapService.TilesPerRow, 0, _scoresBuffer.Clone()));
         }
         catch (SocketException ex)
         {
@@ -103,4 +103,12 @@ internal sealed class SendToServicePointDisplay : IFrameConsumer
 
         _scoresBuffer[16] = _mapService.Current.Name[..(Math.Min(ScoresWidth, _mapService.Current.Name.Length) - 1)];
     }
+
+    private static string GetLocalIPv4(DisplayConfiguration configuration)
+    {
+        using var socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, 0);
+        socket.Connect(configuration.Hostname, configuration.Port);
+        var endPoint = socket.LocalEndPoint as IPEndPoint ?? throw new NotSupportedException();
+        return endPoint.Address.ToString();
+    }
 }

tanks-backend/TanksServer/Models/DisplayConfiguration.cs

@@ -1,8 +1,8 @@
-namespace DisplayCommands;
+namespace TanksServer.Models;
 
 public class DisplayConfiguration
 {
     public string Hostname { get; set; } = "172.23.42.29";
 
     public int Port { get; set; } = 2342;
-}
+}

tanks-backend/TanksServer/Program.cs

@@ -1,8 +1,9 @@
 using System.IO;
-using DisplayCommands;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.FileProviders;
+using ServicePoint2;
+using SixLabors.ImageSharp;
 using TanksServer.GameLogic;
 using TanksServer.Graphics;
 using TanksServer.Interactivity;
@@ -94,9 +95,14 @@ public static class Program
 
         builder.Services.Configure<GameRules>(builder.Configuration.GetSection("GameRules"));
         builder.Services.Configure<HostConfiguration>(builder.Configuration.GetSection("Host"));
+        builder.Services.Configure<DisplayConfiguration>(builder.Configuration.GetSection("ServicePointDisplay"));
 
         builder.Services.AddSingleton<IFrameConsumer, SendToServicePointDisplay>();
-        builder.Services.AddDisplay(builder.Configuration.GetSection("ServicePointDisplay"));
+        builder.Services.AddSingleton<Connection>(sp =>
+        {
+            var config = sp.GetRequiredService<IOptions<DisplayConfiguration>>().Value;
+            return Connection.Open($"{config.Hostname}:{config.Port}");
+        });
 
         var app = builder.Build();
 

tanks-backend/TanksServer/TanksServer.csproj

@@ -10,11 +10,14 @@
         <PackageReference Include="DotNext.Threading" Version="5.3.0" />
         <PackageReference Include="Microsoft.Extensions.Options.ConfigurationExtensions" Version="8.0.0" />
         <PackageReference Include="SixLabors.ImageSharp" Version="3.1.4" />
-        <ProjectReference Include="../DisplayCommands/DisplayCommands.csproj" />
     </ItemGroup>
 
     <ItemGroup>
         <None Include="./assets/**" CopyToOutputDirectory="PreserveNewest" CopyToPublishDirectory="Always"/>
     </ItemGroup>
 
+    <ItemGroup>
+      <ProjectReference Include="..\..\..\servicepoint2\servicepoint2-binding-cs\ServicePoint2\ServicePoint2.csproj" />
+    </ItemGroup>
+
 </Project>

tanks-backend/TanksServer/appsettings.json

@@ -16,7 +16,8 @@
         }
     },
     "ServicePointDisplay": {
-        "Hostname": "172.23.42.29",
+        //"Hostname": "172.23.42.29",
+        "Hostname": "127.0.0.1",
         "Port": 2342
     },
     "GameRules": {