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added mlem.data

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Ellpeck 2019-12-20 15:03:33 +01:00
parent ca258fe41a
commit 8520ae8901
4 changed files with 149 additions and 0 deletions
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28
MLEM.Data/MLEM.Data.csproj Normal file
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>netstandard2.0</TargetFramework>
</PropertyGroup>
<PropertyGroup>
<Authors>Ellpeck</Authors>
<Description>Some simple data and network handling for (M)LEM (L)ibrary by (E)llpeck for (M)onoGame</Description>
<PackageTags>monogame ellpeck mlem utility extensions data network serialize</PackageTags>
<PackageProjectUrl>https://github.com/Ellpeck/MLEM</PackageProjectUrl>
<RepositoryUrl>https://github.com/Ellpeck/MLEM</RepositoryUrl>
<PackageLicenseUrl>https://github.com/Ellpeck/MLEM/blob/master/LICENSE</PackageLicenseUrl>
<Version>1.0.0</Version>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Lidgren.Network" Version="1.0.2" />
<PackageReference Include="MonoGame.Framework.Portable" Version="3.7.1.189">
<PrivateAssets>all</PrivateAssets>
</PackageReference>
<PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
<PackageReference Include="Newtonsoft.Json.Bson" Version="1.0.2" />
</ItemGroup>
<ItemGroup>
<ProjectReference Include="..\MLEM\MLEM.csproj" />
</ItemGroup>
</Project>

61
MLEM.Data/NetBufferSerializer.cs Normal file
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using System;
using System.Collections.Generic;
using System.Reflection;
using Lidgren.Network;
namespace MLEM.Data {
public class NetBufferSerializer {
private readonly Dictionary<Type, Action<NetBuffer, object>> writeFunctions = new Dictionary<Type, Action<NetBuffer, object>>();
private readonly Dictionary<Type, Func<NetBuffer, object>> readFunctions = new Dictionary<Type, Func<NetBuffer, object>>();
private readonly Dictionary<Type, FieldInfo[]> fieldCache = new Dictionary<Type, FieldInfo[]>();
public NetBufferSerializer() {
foreach (var method in typeof(NetBuffer).GetMethods(BindingFlags.Instance | BindingFlags.Public)) {
if (method.GetParameters().Length == 0 && method.Name.StartsWith("Read", StringComparison.Ordinal) && method.Name.Substring(4) == method.ReturnType.Name)
this.readFunctions[method.ReturnType] = buffer => method.Invoke(buffer, null);
}
foreach (var method in typeof(NetBuffer).GetMethods(BindingFlags.Instance | BindingFlags.Public)) {
if (method.Name.Equals("Write", StringComparison.InvariantCulture)) {
var parameters = method.GetParameters();
if (parameters.Length == 1)
this.writeFunctions[parameters[0].ParameterType] = (buffer, o) => method.Invoke(buffer, new[] {o});
}
}
this.AddHandler((buffer, o) => buffer.Write(o), buffer => buffer.ReadVector2());
this.AddHandler((buffer, o) => buffer.Write(o), buffer => buffer.ReadGuid());
this.AddHandler((buffer, o) => buffer.Write(o), buffer => buffer.ReadDirection());
}
public void Serialize(NetBuffer buffer, object o, BindingFlags flags = BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic) {
foreach (var field in this.GetFields(o.GetType(), flags)) {
if (!this.writeFunctions.TryGetValue(field.FieldType, out var func))
throw new ArgumentException($"The type {field.FieldType} doesn't have a writer");
func(buffer, field.GetValue(o));
}
}
public void Deserialize(NetBuffer buffer, object o, BindingFlags flags = BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic) {
foreach (var field in this.GetFields(o.GetType(), flags)) {
if (!this.readFunctions.TryGetValue(field.FieldType, out var func))
throw new ArgumentException($"The type {field.FieldType} doesn't have a reader");
field.SetValue(o, func(buffer));
}
}
private IEnumerable<FieldInfo> GetFields(Type type, BindingFlags flags) {
if (!this.fieldCache.TryGetValue(type, out var fields)) {
fields = type.GetFields(flags);
Array.Sort(fields, (f1, f2) => string.Compare(f1.Name, f2.Name, StringComparison.Ordinal));
this.fieldCache.Add(type, fields);
}
return fields;
}
public void AddHandler<T>(Action<NetBuffer, T> write, Func<NetBuffer, T> read) {
this.writeFunctions.Add(typeof(T), (buffer, o) => write(buffer, (T) o));
this.readFunctions.Add(typeof(T), buffer => read(buffer));
}
}
}

54
MLEM.Data/NetExtensions.cs Normal file
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using System;
using System.IO;
using System.IO.Compression;
using Lidgren.Network;
using Microsoft.Xna.Framework;
using MLEM.Misc;
using Newtonsoft.Json;
using Newtonsoft.Json.Bson;
namespace MLEM.Data {
public static class NetExtensions {
public static void Write(this NetBuffer buffer, Vector2 vector) {
buffer.Write(vector.X);
buffer.Write(vector.Y);
}
public static Vector2 ReadVector2(this NetBuffer buffer) {
return new Vector2(buffer.ReadFloat(), buffer.ReadFloat());
}
public static void Write(this NetBuffer buffer, Guid guid) {
buffer.Write(guid.ToByteArray());
}
public static Guid ReadGuid(this NetBuffer buffer) {
return new Guid(buffer.ReadBytes(16));
}
public static void Write(this NetBuffer buffer, Direction2 direction) {
buffer.Write((short) direction);
}
public static Direction2 ReadDirection(this NetBuffer buffer) {
return (Direction2) buffer.ReadInt16();
}
public static void WriteObject<T>(this NetBuffer buffer, T obj, JsonSerializer serializer) {
using (var memory = new MemoryStream()) {
using (var gzip = new GZipStream(memory, CompressionLevel.Fastest, true))
serializer.Serialize(new BsonDataWriter(gzip), obj, typeof(T));
buffer.Write(memory.ToArray());
}
}
public static T ReadObject<T>(this NetBuffer buffer, JsonSerializer serializer) {
using (var memory = new MemoryStream(buffer.ReadBytes(buffer.LengthBytes))) {
using (var gzip = new GZipStream(memory, CompressionMode.Decompress, true))
return serializer.Deserialize<T>(new BsonDataReader(gzip));
}
}
}
}

6
MLEM.sln
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@ -16,6 +16,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Sandbox", "Sandbox\Sandbox.
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Demos.Android", "Demos.Android\Demos.Android.csproj", "{410C0262-131C-4D0E-910D-D01B4F7143E0}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MLEM.Data", "MLEM.Data\MLEM.Data.csproj", "{28938AAA-FB91-4E6F-8511-0DB99EC831F7}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
@ -54,5 +56,9 @@ Global
{410C0262-131C-4D0E-910D-D01B4F7143E0}.Debug|Any CPU.Build.0 = Debug|Any CPU
{410C0262-131C-4D0E-910D-D01B4F7143E0}.Release|Any CPU.ActiveCfg = Release|Any CPU
{410C0262-131C-4D0E-910D-D01B4F7143E0}.Release|Any CPU.Build.0 = Release|Any CPU
{28938AAA-FB91-4E6F-8511-0DB99EC831F7}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{28938AAA-FB91-4E6F-8511-0DB99EC831F7}.Debug|Any CPU.Build.0 = Debug|Any CPU
{28938AAA-FB91-4E6F-8511-0DB99EC831F7}.Release|Any CPU.ActiveCfg = Release|Any CPU
{28938AAA-FB91-4E6F-8511-0DB99EC831F7}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
EndGlobal