Added trimming and AOT annotations and made MLEM trimmable

CHANGELOG.md

@@ -23,6 +23,7 @@ Improvements
 - Discard old data when updating a StaticSpriteBatch
 - Multi-target net452, making MLEM compatible with MonoGame for consoles
 - Allow retrieving the cost of a calculated path when using AStar
+- Added trimming and AOT annotations and made MLEM trimmable
 - **Drastically improved StaticSpriteBatch batching performance**
 - **Made GenericFont and TokenizedString support UTF-32 characters like emoji**
 
@@ -48,6 +49,7 @@ Improvements
 - Close other dropdowns when opening a dropdown
 - Generified UiMarkdownParser by adding abstract UiParser
 - Multi-target net452, making MLEM compatible with MonoGame for consoles
+- Added trimming and AOT annotations and made MLEM.Ui trimmable
 
 Fixes
 - Fixed parents of elements that prevent spill not being notified properly
@@ -69,6 +71,7 @@ Improvements
 - Allow data texture atlas pivots and offsets to be negative
 - Made RuntimeTexturePacker restore texture region name and pivot when packing
 - Multi-target net452, making MLEM compatible with MonoGame for consoles
+- Added trimming and AOT annotations and made MLEM.Data trimmable
 
 Fixes
 - Fixed data texture atlases not allowing most characters in their region names
@@ -79,11 +82,13 @@ Removals
 ## MLEM.Extended
 Improvements
 - Multi-target net452, making MLEM compatible with MonoGame for consoles
+- Added trimming and AOT annotations and made MLEM.Extended trimmable
 - **Made GenericBitmapFont and GenericStashFont support UTF-32 characters like emoji**
 
 ## MLEM.Startup
 Improvements
 - Multi-target net452, making MLEM compatible with MonoGame for consoles
+- Added trimming and AOT annotations and made MLEM.Startup trimmable
 
 ## 6.0.0
 

MLEM.Data/Content/RawContentManager.cs

@@ -5,33 +5,52 @@ using Microsoft.Xna.Framework;
 using Microsoft.Xna.Framework.Content;
 using Microsoft.Xna.Framework.Graphics;
 
+#if NET6_0_OR_GREATER
+using System.Diagnostics.CodeAnalysis;
+#endif
+
 namespace MLEM.Data.Content {
     /// <summary>
     /// Represents a version of <see cref="ContentManager"/> that doesn't load content binary <c>xnb</c> files, but rather as their regular formats.
     /// </summary>
     public class RawContentManager : ContentManager, IGameComponent {
 
-        private static List<RawContentReader> readers;
-
         /// <summary>
         /// The graphics device that this content manager uses
         /// </summary>
         public readonly GraphicsDevice GraphicsDevice;
 
         private readonly List<IDisposable> disposableAssets = new List<IDisposable>();
+        private readonly List<RawContentReader> readers;
+
         #if FNA
         private Dictionary<string, object> LoadedAssets { get; } = new Dictionary<string, object>(StringComparer.OrdinalIgnoreCase);
         #endif
 
         /// <summary>
         /// Creates a new content manager with an optionally specified root directory.
+        /// Each <see cref="RawContentReader"/> required for asset loading is gathered and instantiated automatically from the loaded assemblies.
         /// </summary>
         /// <param name="serviceProvider">The service provider of your game</param>
         /// <param name="rootDirectory">The root directory. Defaults to "Content"</param>
+        #if NET6_0_OR_GREATER
+        [RequiresUnreferencedCode("Automatically gathered RawContentReader types might be removed, use other constructor to add readers manually")]
+        #endif
         public RawContentManager(IServiceProvider serviceProvider, string rootDirectory = "Content") :
+            this(serviceProvider, RawContentManager.CollectContentReaders(), rootDirectory) {}
+
+        /// <summary>
+        /// Creates a new content manager with an optionally specified root directory.
+        /// Each <see cref="RawContentReader"/> required for asset loading has to be passed using <paramref name="readers"/>.
+        /// </summary>
+        /// <param name="serviceProvider">The service provider of your game</param>
+        /// <param name="readers">The raw content readers to use, which can be modified externally afterwards to add additional readers if desired.</param>
+        /// <param name="rootDirectory">The root directory. Defaults to "Content"</param>
+        public RawContentManager(IServiceProvider serviceProvider, List<RawContentReader> readers, string rootDirectory) :
             base(serviceProvider, rootDirectory) {
             if (serviceProvider.GetService(typeof(IGraphicsDeviceService)) is IGraphicsDeviceService s)
                 this.GraphicsDevice = s.GraphicsDevice;
+            this.readers = readers;
         }
 
         /// <summary>
@@ -63,9 +82,7 @@ namespace MLEM.Data.Content {
 
         private T Read<T>(string assetName, T existing) {
             var triedFiles = new List<string>();
-            if (RawContentManager.readers == null)
+            foreach (var reader in this.readers) {
-                RawContentManager.readers = RawContentManager.CollectContentReaders();
-            foreach (var reader in RawContentManager.readers) {
                 if (!reader.CanRead(typeof(T)))
                     continue;
                 foreach (var ext in reader.GetFileExtensions()) {
@@ -104,6 +121,9 @@ namespace MLEM.Data.Content {
         /// </summary>
         public void Initialize() {}
 
+        #if NET6_0_OR_GREATER
+        [RequiresUnreferencedCode("Automatically gathered RawContentReader types might be removed, use other constructor to add readers manually")]
+        #endif
         private static List<RawContentReader> CollectContentReaders() {
             var ret = new List<RawContentReader>();
             var assemblyExceptions = new List<Exception>();

MLEM.Data/Content/XmlReader.cs

@@ -12,6 +12,10 @@ namespace MLEM.Data.Content {
         }
 
         /// <inheritdoc />
+        #if NET6_0_OR_GREATER
+        [System.Diagnostics.CodeAnalysis.UnconditionalSuppressMessage("Trimming", "IL2026",
+            Justification = "RawContentManager does not support XmlReader in a trimmed or AOT context, so this method is not expected to be called.")]
+        #endif
         public override object Read(RawContentManager manager, string assetPath, Stream stream, Type t, object existing) {
             return new XmlSerializer(t).Deserialize(stream);
         }

MLEM.Data/CopyExtensions.cs

@@ -3,11 +3,18 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Reflection;
 
+#if NET6_0_OR_GREATER
+using System.Diagnostics.CodeAnalysis;
+#endif
+
 namespace MLEM.Data {
     /// <summary>
     /// A set of extensions for dealing with copying objects.
     /// </summary>
     [Obsolete("CopyExtensions has major flaws and insufficient speed compared to other libraries specifically designed for copying objects.")]
+    #if NET6_0_OR_GREATER
+    [UnconditionalSuppressMessage("Aot", "IL3050"), UnconditionalSuppressMessage("Aot", "IL2070"), UnconditionalSuppressMessage("Aot", "IL2090")]
+    #endif
     public static class CopyExtensions {
 
         private const BindingFlags DefaultFlags = BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic;
@@ -15,7 +22,7 @@ namespace MLEM.Data {
 
         /// <summary>
         /// Creates a shallow copy of the object and returns it.
-        /// Object creation occurs using a constructor with the <see cref="CopyConstructorAttribute"/> or, if none is present, the first constructor with the correct <see cref="BindingFlags"/>. 
+        /// Object creation occurs using a constructor with the <see cref="CopyConstructorAttribute"/> or, if none is present, the first constructor with the correct <see cref="BindingFlags"/>.
         /// </summary>
         /// <param name="obj">The object to create a shallow copy of</param>
         /// <param name="flags">The binding flags for field searching</param>
@@ -31,7 +38,7 @@ namespace MLEM.Data {
 
         /// <summary>
         /// Creates a deep copy of the object and returns it.
-        /// Object creation occurs using a constructor with the <see cref="CopyConstructorAttribute"/> or, if none is present, the first constructor with the correct <see cref="BindingFlags"/>. 
+        /// Object creation occurs using a constructor with the <see cref="CopyConstructorAttribute"/> or, if none is present, the first constructor with the correct <see cref="BindingFlags"/>.
         /// </summary>
         /// <param name="obj">The object to create a deep copy of</param>
         /// <param name="flags">The binding flags for field searching</param>
@@ -63,7 +70,7 @@ namespace MLEM.Data {
 
         /// <summary>
         /// Copies the given object <paramref name="obj"/> into the given object <paramref name="otherObj"/> in a deep manner.
-        /// Object creation occurs using a constructor with the <see cref="CopyConstructorAttribute"/> or, if none is present, the first constructor with the correct <see cref="BindingFlags"/>. 
+        /// Object creation occurs using a constructor with the <see cref="CopyConstructorAttribute"/> or, if none is present, the first constructor with the correct <see cref="BindingFlags"/>.
         /// </summary>
         /// <param name="obj">The object to create a deep copy of</param>
         /// <param name="otherObj">The object to copy into</param>

MLEM.Data/DynamicEnum.cs

@@ -26,6 +26,9 @@ namespace MLEM.Data {
     /// </code>
     /// </remarks>
     [Obsolete("DynamicEnum has been moved into the DynamicEnums library: https://www.nuget.org/packages/DynamicEnums"), JsonConverter(typeof(DynamicEnumConverter))]
+    #if NET6_0_OR_GREATER
+    [System.Diagnostics.CodeAnalysis.UnconditionalSuppressMessage("Aot", "IL2067")]
+    #endif
     public abstract class DynamicEnum {
 
         private static readonly Dictionary<Type, Storage> Storages = new Dictionary<Type, Storage>();

MLEM.Data/Json/JsonConverters.cs

@@ -11,9 +11,16 @@ namespace MLEM.Data.Json {
         /// <summary>
         /// An array of all of the <see cref="JsonConverter"/>s that are part of MLEM.Data
         /// </summary>
-        public static readonly JsonConverter[] Converters = typeof(JsonConverters).Assembly.GetExportedTypes()
+        public static readonly JsonConverter[] Converters = {
-            .Where(t => t.IsSubclassOf(typeof(JsonConverter)) && !t.IsGenericType)
+            new Direction2Converter(),
-            .Select(Activator.CreateInstance).Cast<JsonConverter>().ToArray();
+            #pragma warning disable CS0618
+            new DynamicEnumConverter(),
+            #pragma warning restore CS0618
+            new PointConverter(),
+            new RectangleConverter(),
+            new RectangleFConverter(),
+            new Vector2Converter()
+        };
 
         /// <summary>
         /// Adds all of the <see cref="JsonConverter"/> objects that are part of MLEM.Data to the given <see cref="JsonSerializer"/>

MLEM.Data/Json/JsonTypeSafeGenericDataHolder.cs

@@ -9,6 +9,9 @@ namespace MLEM.Data.Json {
     /// This class uses <see cref="JsonTypeSafeWrapper"/> for each object stored to ensure that objects with a custom <see cref="JsonConverter"/> get deserialized as an instance of their original type if <see cref="JsonSerializer.TypeNameHandling"/> is not set to <see cref="TypeNameHandling.None"/>.
     /// </summary>
     [DataContract]
+    #if NET7_0_OR_GREATER
+    [System.Diagnostics.CodeAnalysis.RequiresDynamicCode("The native code for instantiation of JsonTypeSafeWrapper instances might not be available at runtime.")]
+    #endif
     public class JsonTypeSafeGenericDataHolder : IGenericDataHolder {
 
         private static readonly string[] EmptyStrings = new string[0];

MLEM.Data/Json/JsonTypeSafeWrapper.cs

@@ -34,6 +34,9 @@ namespace MLEM.Data.Json {
         /// </summary>
         /// <param name="value">The value to wrap</param>
         /// <returns>A <see cref="JsonTypeSafeWrapper{T}"/> with a type matching the type of <paramref name="value"/></returns>
+        #if NET7_0_OR_GREATER
+        [System.Diagnostics.CodeAnalysis.RequiresDynamicCode("The native code for this instantiation might not be available at runtime.")]
+        #endif
         public static JsonTypeSafeWrapper Of(object value) {
             var type = typeof(JsonTypeSafeWrapper<>).MakeGenericType(value.GetType());
             return (JsonTypeSafeWrapper) Activator.CreateInstance(type, value);

MLEM.Data/Json/StaticJsonConverter.cs

@@ -4,9 +4,13 @@ using System.Linq;
 using System.Reflection;
 using Newtonsoft.Json;
 
+#if NET6_0_OR_GREATER
+using System.Diagnostics.CodeAnalysis;
+#endif
+
 namespace MLEM.Data.Json {
     /// <summary>
-    /// A <see cref="JsonConverter{T}"/> that doesn't actually serialize the object, but instead serializes the name given to it by the underlying <see cref="Dictionary{T,T}"/>. 
+    /// A <see cref="JsonConverter{T}"/> that doesn't actually serialize the object, but instead serializes the name given to it by the underlying <see cref="Dictionary{T,T}"/>.
     /// Optionally, the name of a <see cref="Dictionary{TKey,TValue}"/> can be passed to this converter when used in the <see cref="JsonConverterAttribute"/> by passing the arguments for the <see cref="StaticJsonConverter{T}(Type,string)"/> constructor as <see cref="JsonConverterAttribute.ConverterParameters"/>.
     /// </summary>
     /// <typeparam name="T">The type of the object to convert</typeparam>
@@ -29,7 +33,11 @@ namespace MLEM.Data.Json {
         /// </summary>
         /// <param name="type">The type that the dictionary is declared in</param>
         /// <param name="memberName">The name of the dictionary itself</param>
-        public StaticJsonConverter(Type type, string memberName) : this(StaticJsonConverter<T>.GetEntries(type, memberName)) {}
+        public StaticJsonConverter(
+            #if NET6_0_OR_GREATER
+            [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicProperties | DynamicallyAccessedMemberTypes.NonPublicProperties | DynamicallyAccessedMemberTypes.PublicFields | DynamicallyAccessedMemberTypes.NonPublicFields)]
+            #endif
+            Type type, string memberName) : this(StaticJsonConverter<T>.GetEntries(type, memberName)) {}
 
         /// <summary>Writes the JSON representation of the object.</summary>
         /// <param name="writer">The <see cref="T:Newtonsoft.Json.JsonWriter" /> to write to.</param>
@@ -56,7 +64,11 @@ namespace MLEM.Data.Json {
             return ret;
         }
 
-        private static Dictionary<string, T> GetEntries(Type type, string memberName) {
+        private static Dictionary<string, T> GetEntries(
+            #if NET6_0_OR_GREATER
+            [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicProperties | DynamicallyAccessedMemberTypes.NonPublicProperties | DynamicallyAccessedMemberTypes.PublicFields | DynamicallyAccessedMemberTypes.NonPublicFields)]
+            #endif
+            Type type, string memberName) {
             const BindingFlags flags = BindingFlags.Instance | BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic;
             var value = type.GetProperty(memberName, flags)?.GetValue(null) ?? type.GetField(memberName, flags)?.GetValue(null);
             if (value == null)

MLEM.Data/MLEM.Data.FNA.csproj

@@ -3,6 +3,7 @@
         <TargetFrameworks>net452;netstandard2.0;net6.0</TargetFrameworks>
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
         <ProduceReferenceAssembly>true</ProduceReferenceAssembly>
+        <IsTrimmable>true</IsTrimmable>
         <RootNamespace>MLEM.Data</RootNamespace>
         <DefineConstants>$(DefineConstants);FNA</DefineConstants>
         <NoWarn>NU1701</NoWarn>

MLEM.Data/MLEM.Data.csproj

@@ -3,6 +3,7 @@
         <TargetFrameworks>net452;netstandard2.0;net6.0</TargetFrameworks>
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
         <ProduceReferenceAssembly>true</ProduceReferenceAssembly>
+        <IsTrimmable>true</IsTrimmable>
         <NoWarn>NU1701</NoWarn>
     </PropertyGroup>
 

MLEM.Data/NetBufferSerializer.cs

@@ -11,6 +11,9 @@ namespace MLEM.Data {
     /// Before serializing and deserializing an object, each of the object's fields has to have a handler. New handlers can be added using <see cref="AddHandler{T}(System.Action{Lidgren.Network.NetBuffer,T},System.Func{Lidgren.Network.NetBuffer,T})"/> or <see cref="AddHandler{T}(Newtonsoft.Json.JsonSerializer)"/>.
     /// </summary>
     [Obsolete("Lidgren.Network support is deprecated. Consider using LiteNetLib or a custom implementation instead.")]
+    #if NET6_0_OR_GREATER
+    [System.Diagnostics.CodeAnalysis.UnconditionalSuppressMessage("Aot", "IL2070")]
+    #endif
     public class NetBufferSerializer {
 
         private readonly Dictionary<Type, Action<NetBuffer, object>> writeFunctions = new Dictionary<Type, Action<NetBuffer, object>>();

MLEM.Extended/MLEM.Extended.FNA.csproj

@@ -3,6 +3,7 @@
         <TargetFrameworks>netstandard2.0;net6.0</TargetFrameworks>
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
         <ProduceReferenceAssembly>true</ProduceReferenceAssembly>
+        <IsTrimmable>true</IsTrimmable>
         <RootNamespace>MLEM.Extended</RootNamespace>
         <DefineConstants>$(DefineConstants);FNA</DefineConstants>
         <NoWarn>NU1702</NoWarn>

MLEM.Extended/MLEM.Extended.csproj

@@ -3,6 +3,7 @@
         <TargetFrameworks>netstandard2.0;net6.0</TargetFrameworks>
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
         <ProduceReferenceAssembly>true</ProduceReferenceAssembly>
+        <IsTrimmable>true</IsTrimmable>
     </PropertyGroup>
 
     <PropertyGroup>

MLEM.Startup/MLEM.Startup.FNA.csproj

@@ -4,6 +4,7 @@
         <TargetFrameworks>net452;netstandard2.0;net6.0</TargetFrameworks>
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
         <ProduceReferenceAssembly>true</ProduceReferenceAssembly>
+        <IsTrimmable>true</IsTrimmable>
         <RootNamespace>MLEM.Startup</RootNamespace>
         <DefineConstants>$(DefineConstants);FNA</DefineConstants>
     </PropertyGroup>

MLEM.Startup/MLEM.Startup.csproj

@@ -4,6 +4,7 @@
         <TargetFrameworks>net452;netstandard2.0;net6.0</TargetFrameworks>
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
         <ProduceReferenceAssembly>true</ProduceReferenceAssembly>
+        <IsTrimmable>true</IsTrimmable>
     </PropertyGroup>
 
     <PropertyGroup>

MLEM.Templates/MLEM.Templates.csproj

@@ -6,6 +6,7 @@
         <IncludeBuildOutput>false</IncludeBuildOutput>
         <ContentTargetFolders>content</ContentTargetFolders>
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
+        <IsTrimmable>true</IsTrimmable>
         <NoWarn>NU5128</NoWarn>
     </PropertyGroup>
 

MLEM.Ui/MLEM.Ui.FNA.csproj

@@ -3,6 +3,7 @@
         <TargetFrameworks>net452;netstandard2.0;net6.0</TargetFrameworks>
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
         <ProduceReferenceAssembly>true</ProduceReferenceAssembly>
+        <IsTrimmable>true</IsTrimmable>
         <RootNamespace>MLEM.Ui</RootNamespace>
         <DefineConstants>$(DefineConstants);FNA</DefineConstants>
     </PropertyGroup>

MLEM.Ui/MLEM.Ui.csproj

@@ -3,6 +3,7 @@
         <TargetFrameworks>net452;netstandard2.0;net6.0</TargetFrameworks>
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
         <ProduceReferenceAssembly>true</ProduceReferenceAssembly>
+        <IsTrimmable>true</IsTrimmable>
     </PropertyGroup>
 
     <PropertyGroup>

MLEM.Ui/Parsers/UiParser.cs

@@ -24,7 +24,12 @@ namespace MLEM.Ui.Parsers {
         /// <summary>
         /// An array containing all of the <see cref="ElementType"/> enum values.
         /// </summary>
-        public static readonly ElementType[] ElementTypes = (ElementType[]) Enum.GetValues(typeof(ElementType));
+        public static readonly ElementType[] ElementTypes =
+            #if NET6_0_OR_GREATER
+            Enum.GetValues<ElementType>();
+        #else
+            (ElementType[]) Enum.GetValues(typeof(ElementType));
+        #endif
 
         /// <summary>
         /// The base path for images, which is prepended to the image link.

MLEM/Input/InputHandler.cs

@@ -17,11 +17,21 @@ namespace MLEM.Input {
         /// <summary>
         /// All values of the <see cref="Buttons"/> enum.
         /// </summary>
-        public static readonly Buttons[] AllButtons = (Buttons[]) Enum.GetValues(typeof(Buttons));
+        public static readonly Buttons[] AllButtons =
+            #if NET6_0_OR_GREATER
+            Enum.GetValues<Buttons>();
+        #else
+            (Buttons[]) Enum.GetValues(typeof(Buttons));
+        #endif
         /// <summary>
         /// All values of the <see cref="Keys"/> enum.
         /// </summary>
-        public static readonly Keys[] AllKeys = (Keys[]) Enum.GetValues(typeof(Keys));
+        public static readonly Keys[] AllKeys =
+            #if NET6_0_OR_GREATER
+            Enum.GetValues<Keys>();
+        #else
+            (Keys[]) Enum.GetValues(typeof(Keys));
+        #endif
 
         #if FNA
         private const int MaximumGamePadCount = 4;

MLEM/Input/KeysExtensions.cs

@@ -12,7 +12,7 @@ namespace MLEM.Input {
         /// <summary>
         /// All enum values of <see cref="ModifierKey"/>
         /// </summary>
-        public static readonly ModifierKey[] ModifierKeys = (ModifierKey[]) Enum.GetValues(typeof(ModifierKey));
+        public static readonly ModifierKey[] ModifierKeys = {ModifierKey.None, ModifierKey.Shift, ModifierKey.Control, ModifierKey.Alt};
         private static readonly Dictionary<ModifierKey, Keys[]> KeysLookup = new Dictionary<ModifierKey, Keys[]> {
             {ModifierKey.Shift, new[] {Keys.LeftShift, Keys.RightShift}},
             {ModifierKey.Control, new[] {Keys.LeftControl, Keys.RightControl}},

MLEM/Input/MouseExtensions.cs

@@ -10,7 +10,7 @@ namespace MLEM.Input {
         /// <summary>
         /// All enum values of <see cref="MouseButton"/>
         /// </summary>
-        public static readonly MouseButton[] MouseButtons = (MouseButton[]) Enum.GetValues(typeof(MouseButton));
+        public static readonly MouseButton[] MouseButtons = {MouseButton.Left, MouseButton.Middle, MouseButton.Right, MouseButton.Extra1, MouseButton.Extra2};
 
         /// <summary>
         /// Returns the <see cref="ButtonState"/> of the given mouse button.

MLEM/MLEM.FNA.csproj

@@ -3,6 +3,7 @@
         <TargetFrameworks>net452;netstandard2.0;net6.0</TargetFrameworks>
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
         <ProduceReferenceAssembly>true</ProduceReferenceAssembly>
+        <IsTrimmable>true</IsTrimmable>
         <RootNamespace>MLEM</RootNamespace>
         <DefineConstants>$(DefineConstants);FNA</DefineConstants>
     </PropertyGroup>

MLEM/MLEM.csproj

@@ -3,6 +3,7 @@
         <TargetFrameworks>net452;netstandard2.0;net6.0</TargetFrameworks>
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
         <ProduceReferenceAssembly>true</ProduceReferenceAssembly>
+        <IsTrimmable>true</IsTrimmable>
     </PropertyGroup>
 
     <PropertyGroup>

MLEM/Misc/Direction2.cs

@@ -71,7 +71,10 @@ namespace MLEM.Misc {
         /// <summary>
         /// All <see cref="Direction2"/> enum values
         /// </summary>
-        public static readonly Direction2[] All = (Direction2[]) Enum.GetValues(typeof(Direction2));
+        public static readonly Direction2[] All = {
+            Direction2.None, Direction2.Up, Direction2.Right, Direction2.Down, Direction2.Left,
+            Direction2.UpRight, Direction2.DownRight, Direction2.UpLeft, Direction2.DownLeft
+        };
         /// <summary>
         /// The <see cref="Direction2.Up"/> through <see cref="Direction2.Left"/> directions
         /// </summary>