Basic entity scripting

GlitchyEditor/src/EditWindows/ComponentEditWindow.bf

@@ -6,6 +6,7 @@ using System.Collections;
 using GlitchyEngine.Renderer;
 using GlitchyEngine;
 using GlitchyEngine.Content;
+using GlitchyEngine.Scripting;
 
 namespace GlitchyEditor.EditWindows
 {
@@ -68,6 +69,7 @@ namespace GlitchyEditor.EditWindows
 			ShowComponentEditor<Rigidbody2DComponent>("Rigidbody 2D", entity, => ShowRigidBody2DComponentEditor, => ShowComponentContextMenu<Rigidbody2DComponent>);
 			ShowComponentEditor<BoxCollider2DComponent>("Box collider 2D", entity, => ShowBoxCollider2DComponentEditor, => ShowComponentContextMenu<BoxCollider2DComponent>);
 			ShowComponentEditor<CircleCollider2DComponent>("Circle collider 2D", entity, => ShowCircleCollider2DComponentEditor, => ShowComponentContextMenu<CircleCollider2DComponent>);
+			ShowComponentEditor<ScriptComponent>("Script Component", entity, => ShowScriptComponentEditor, => ShowComponentContextMenu<ScriptComponent>);
 
 			ShowAddComponentButton(entity);
 		}
@@ -429,6 +431,35 @@ namespace GlitchyEditor.EditWindows
 				circleCollider.RestitutionThreshold = restitutionThreshold;
 		}
 
+		private static void ShowScriptComponentEditor(Entity entity, ScriptComponent* scriptComponent)
+		{
+			static char8[64] buffer = .();
+
+			StringView search = StringView();
+
+			if (ImGui.InputText("##ScriptName", &buffer, buffer.Count))
+			{
+				search = StringView(&buffer);
+			}
+
+			if (ImGui.BeginCombo("##Type", scriptComponent.Instance?.ScriptClass.FullName.ToScopeCStr!()))
+			{
+				for (let (className, script) in ScriptEngine.EntityClasses)
+				{
+					if (!search.IsWhiteSpace && !className.Contains(search, true))
+						continue;
+
+					if (ImGui.Selectable(className.ToScopeCStr!(),
+						className == scriptComponent.Instance?.ScriptClass.FullName))
+					{
+						scriptComponent.Instance = new ScriptInstance(script);
+					}
+				}
+
+				ImGui.EndCombo();
+			}
+		}
+
 		private static void LabelColumn(StringView label)
 		{
 			ImGui.TextUnformatted(label);
@@ -584,6 +615,7 @@ namespace GlitchyEditor.EditWindows
 				ShowComponentButton<CircleCollider2DComponent>("Circle collider 2D");
 				ShowComponentButton<MeshComponent>("Mesh");
 				ShowComponentButton<MeshRendererComponent>("Mesh Renderer");
+				ShowComponentButton<ScriptComponent>("C# Script");
 
 				ImGui.EndCombo();
 			}

GlitchyEngine/src/Scripting/ScriptClass.bf

@@ -0,0 +1,120 @@
+using Mono;
+using System;
+using GlitchyEngine.Core;
+
+namespace GlitchyEngine.Scripting;
+
+class ScriptClass
+{
+	private String _namespace ~ delete _;
+	private String _className ~ delete _;
+	private String _fullName ~ delete _;
+
+	private MonoClass* _monoClass;
+
+	//typealias ConstructorMethod = function void(MonoObject* instance, UUID uuid, MonoException** exception);
+	typealias OnCreateMethod = function MonoObject*(MonoObject* instance, MonoException** exception);
+	typealias OnUpdateMethod = function MonoObject*(MonoObject* instance, float deltaTime, MonoException** exception);
+	typealias OnDestroyMethod = function MonoObject*(MonoObject* instance, MonoException** exception);
+
+	private MonoMethod* _constructor;
+	//private ConstructorMethod _constructor;
+	private OnCreateMethod _onCreate;
+	private OnUpdateMethod _onUpdate;
+	private OnDestroyMethod _onDestroy;
+
+	public StringView Namespace => _namespace;
+	public StringView ClassName => _className;
+	public StringView FullName => _fullName;
+
+	[AllowAppend]
+	public this(StringView classNamespace, StringView className)
+	{
+		_namespace = new String(classNamespace);
+		_className = new String(className);
+		_fullName = new $"{_namespace}.{_className}";
+
+		_monoClass = Mono.mono_class_from_name(ScriptEngine.[Friend]s_CoreAssemblyImage, _namespace, _className);
+
+		//_constructor = (ConstructorMethod)GetMethodThunk(".ctor", 1); // GetMethod(".ctor", 1);//
+		_constructor = GetMethod(".ctor", 1);
+		_onCreate = (OnCreateMethod)GetMethodThunk("OnCreate");
+		_onUpdate = (OnUpdateMethod)GetMethodThunk("OnUpdate", 1);
+		_onDestroy = (OnDestroyMethod)GetMethodThunk("OnDestroy");
+	}
+
+	public void OnCreate(MonoObject* instance)
+	{
+		MonoException* exception = null;
+		if (_onCreate != null)
+			_onCreate(instance, &exception);
+	}
+
+	public void OnUpdate(MonoObject* instance, float deltaTime)
+	{
+		MonoException* exception;
+		if (_onUpdate != null)
+			_onUpdate(instance, deltaTime, &exception);
+	}
+
+	public void OnDestroy(MonoObject* instance)
+	{
+		MonoException* exception;
+		if (_onDestroy != null)
+			_onDestroy(instance, &exception);
+	}
+
+	public MonoObject* CreateInstance(UUID uuid)
+	{
+		MonoObject* instance = Mono.mono_object_new(ScriptEngine.[Friend]s_AppDomain, _monoClass);
+
+#unwarn
+		ScriptEngine.[Friend]s_EngineObject.Invoke(ScriptEngine.[Friend]s_EngineObject._constructor, instance, &uuid);
+
+		//MonoException* exception = null;
+//#unwarn
+		//ScriptEngine.[Friend]s_EntityRoot._constructor(instance, uuid, &exception);
+		//ScriptEngine.[Friend]s_EntityRoot.Invoke(_constructor, instance, &uuid);
+
+		/*MonoObject* exception = null;
+#unwarn*/
+		//Mono.mono_runtime_invoke(_constructor, instance, (.)&uuid, &exception);
+		//Mono.mono_runtime_object_init(instance);
+		//MonoException* exception;
+		//_constructor(instance, uuid, &exception);
+
+		return instance;
+	}
+
+	public MonoMethod* GetMethod(StringView name, int argCount = 0)
+	{
+		return Mono.mono_class_get_method_from_name(_monoClass, name.ToScopeCStr!(), argCount);
+	}
+
+	public void* GetMethodThunk(StringView name, int argCount = 0)
+	{
+		MonoMethod* method = GetMethod(name, argCount);
+
+		if (method == null)
+			return null;
+
+		return Mono.mono_method_get_unmanaged_thunk(method);
+	}
+
+	public MonoObject* Invoke(MonoMethod* method, MonoObject* instance, void** args = null)
+ 	{
+		 MonoObject* exception = null;
+		 return Mono.mono_runtime_invoke(method, instance, args, &exception);
+	}
+
+	public MonoObject* Invoke(MonoMethod* method, MonoObject* instance, params void*[] args)
+ 	{
+		 return Mono.mono_runtime_invoke(method, instance, args.Ptr, null);
+	}
+
+	public T Invoke<T>(MonoMethod* method, MonoObject* instance, params void*[] args)
+ 	{
+		 MonoObject* object = Invoke(method, instance, args.Ptr);
+		 return *(T*)Mono.mono_object_unbox(object);
+	}
+}

GlitchyEngine/src/Scripting/ScriptEngine.bf

@@ -2,6 +2,10 @@ using Mono;
 using System;
 using System.IO;
 using System.Collections;
+using GlitchyEngine.Math;
+using GlitchyEngine.World;
+using GlitchyEngine.Core;
+
 namespace GlitchyEngine.Scripting;
 
 static class ScriptEngine
@@ -10,66 +14,63 @@ static class ScriptEngine
 	private static MonoDomain* s_AppDomain;
 
 	private static MonoAssembly* s_CoreAssembly;
+	private static MonoImage* s_CoreAssemblyImage;
+
+	private static Scene s_Context ~ _?.ReleaseRef();
+
+	private static ScriptClass s_EntityRoot ~ delete _;
+	private static ScriptClass s_EngineObject ~ delete _;
+
+	private static Dictionary<StringView, ScriptClass> _entityScripts = new .() ~ {
+		for (var entry in _)
+		{
+			delete entry.value;
+		}
+		delete _entityScripts;
+	};
+
+	private static Dictionary<UUID, ScriptInstance> _entityScriptInstances = new .() ~ {
+		for (var entry in _)
+		{
+			entry.value?.ReleaseRef();
+		}
+		delete _;
+	};
+
+	public static Dictionary<StringView, ScriptClass> EntityClasses => _entityScripts;
+
+	public static Scene Context => s_Context;
 
 	public static void Init()
 	{
 		Mono.mono_set_assemblies_path("mono/lib");
 
 		s_RootDomain = Mono.mono_jit_init("GlitchyEngineJITRuntime");
-
 		Log.EngineLogger.Assert(s_RootDomain != null, "Failed to initialize mono root domain");
 		
-		// Create an App Domain
-		s_AppDomain = Mono.mono_domain_create_appdomain("GlitchyEngineScriptRuntime", null);
-		Mono.mono_domain_set(s_AppDomain, true);
+		ScriptGlue.Init();
 
-		s_CoreAssembly = LoadCSharpAssembly("resources/scripts/ScriptCore.dll");
-		PrintAssemblyTypes(s_CoreAssembly);
+		LoadAssembly("resources/scripts/ScriptCore.dll");
 
-		function MonoString*() v = => Sample;
-
-		Mono.mono_add_internal_call("GlitchyEngine.CSharpTesting::Sample", v);
-
-		// Create object
-		MonoImage* image = Mono.mono_assembly_get_image(s_CoreAssembly);
-
-		MonoClass* monoClass = Mono.mono_class_from_name(image, "GlitchyEngine", "CSharpTesting");
-		
-		MonoObject* instance = Mono.mono_object_new(s_AppDomain, monoClass);
-		Mono.mono_runtime_object_init(instance);
-
-		MonoMethod* simpleMethod = Mono.mono_class_get_method_from_name(monoClass, "PrintFloatVar", 0);
-		Mono.mono_runtime_invoke(simpleMethod, instance, null, null);
-
-		MonoMethod* methodWithArg = Mono.mono_class_get_method_from_name(monoClass, "IncrementFloatVar", 1);
-
-		float increment = 2.0f;
-		void*[1] args = .(&increment);
-
-		MonoObject* returnValue = Mono.mono_runtime_invoke(methodWithArg, instance, &args, null);
-
-		float returnedValue = *(float*)Mono.mono_object_unbox(returnValue);
-
-		Log.EngineLogger.Info($"C# returned: {returnedValue}");
-
-		Mono.mono_runtime_invoke(simpleMethod, instance, null, null);
+		//Samples();
 	}
 
-	[LinkName(.C), AlwaysInclude, Export]
-	public static void DoSomething()
+	public static void SetContext(Scene scene)
 	{
-		Console.WriteLine("P/Invoke: Hallo von der Engine!");
+		SetReference!(s_Context, scene);
 	}
 
-	[LinkName(.C), AlwaysInclude]
-	public static MonoString* Sample()
+	public static void InitializeInstance(Entity entity, ScriptComponent* script)
 	{
-	  return Mono.mono_string_new(Mono.mono_domain_get(), "Hello!");
+		_entityScriptInstances[entity.UUID] = script.Instance..AddRef();
+
+		script.Instance.Instantiate(entity.UUID);
+		script.Instance.InvokeOnCreate();
 	}
 
 	private static MonoAssembly* LoadCSharpAssembly(StringView assemblyPath)
 	{
-		List<uint8> data = new:ScopedAlloc! List<uint8>(1024);
+		List<uint8> data = new List<uint8>(1024);
 
 		File.ReadAll(assemblyPath, data);
 	
@@ -77,6 +78,8 @@ static class ScriptEngine
 	    MonoImageOpenStatus status = .ImageInvalid;
 	    MonoImage* image = Mono.mono_image_open_from_data_full(data.Ptr, (.)data.Count, true, &status, false);
 
+		delete data;
+
 	    if (status != .Ok)
 	    {
 	        char8* errorMessage = Mono.mono_image_strerror(status);
@@ -89,15 +92,132 @@ static class ScriptEngine
 	    MonoAssembly* assembly = Mono.mono_assembly_load_from_full(image, assemblyPath.ToScopeCStr!(), &status, 0);
 	    Mono.mono_image_close(image);
 
-		// Create object
-
-		// call simple method
-
-		// call method with args
-	
 	    return assembly;
 	}
 
+	static void LoadAssembly(StringView filepath)
+	{
+		s_AppDomain = Mono.mono_domain_create_appdomain("GlitchyEngineScriptRuntime", null);
+		Mono.mono_domain_set(s_AppDomain, true);
+
+		s_CoreAssembly = LoadCSharpAssembly(filepath);
+		s_CoreAssemblyImage = Mono.mono_assembly_get_image(s_CoreAssembly);
+		GetEntitiesFromAssembly(s_CoreAssembly);
+	}
+
+	private static void GetEntitiesFromAssembly(MonoAssembly* assembly)
+	{
+		for (var entry in _entityScripts)
+		{
+			delete entry.value;
+		}
+		_entityScripts.Clear();
+
+	    MonoImage* image = Mono.mono_assembly_get_image(assembly);
+	    MonoTableInfo* typeDefinitionsTable = Mono.mono_image_get_table_info(image, .MONO_TABLE_TYPEDEF);
+	    int32 numTypes = Mono.mono_table_info_get_rows(typeDefinitionsTable);
+
+		s_EngineObject = new ScriptClass("GlitchyEngine.Core", "EngineObject");
+		s_EntityRoot = new ScriptClass("GlitchyEngine", "Entity");
+
+		Log.EngineLogger.Assert(s_EntityRoot != null);
+
+	    for (int32 i = 0; i < numTypes; i++)
+	    {
+	        int32[(.)SOME_RANDOM_ENUM.MONO_TYPEDEF_SIZE] cols = .();
+	        Mono.mono_metadata_decode_row(typeDefinitionsTable, i, (.)&cols, (.)SOME_RANDOM_ENUM.MONO_TYPEDEF_SIZE);
+
+	        char8* nameSpace = Mono.mono_metadata_string_heap(image, (.)cols[(.)SOME_RANDOM_ENUM.MONO_TYPEDEF_NAMESPACE]);
+	        char8* name = Mono.mono_metadata_string_heap(image, (.)cols[(.)SOME_RANDOM_ENUM.MONO_TYPEDEF_NAME]);
+
+			MonoClass* monoClass = Mono.mono_class_from_name(image, nameSpace, name);
+
+			if (monoClass != null && Mono.mono_class_is_subclass_of(monoClass, s_EntityRoot.[Friend]_monoClass, false))
+			{
+				ScriptClass entityScript = new ScriptClass(StringView(nameSpace), StringView(name));
+				_entityScripts.Add(entityScript.FullName, entityScript);
+
+				Log.EngineLogger.Info($"Added entity \"{entityScript.FullName}\"");
+			}
+	    }
+	}
+
+	public static void Shutdown()
+	{
+		/*Mono.mono_assembly_close(s_CoreAssembly);
+		s_CoreAssembly = null;
+		
+		Mono.mono_domain_unload(s_AppDomain);
+		s_AppDomain = null;*/
+
+		Mono.mono_jit_cleanup(s_RootDomain);
+		s_RootDomain = null;
+	}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+	/*static void Samples()
+	{
+		PrintAssemblyTypes(s_CoreAssembly);
+
+		function MonoString*() v = => Sample;
+
+		Mono.mono_add_internal_call("GlitchyEngine.CSharpTesting::Sample", v);
+
+		function void(in Vector3, in Vector3, out Vector3) v2 = => Add;
+
+		Mono.mono_add_internal_call("GlitchyEngine.Vector3::Add_Internal", v2);
+
+		// Create object
+		ScriptClass myClass = scope .("GlitchyEngine", "CSharpTesting");
+		MonoObject* instance = myClass.CreateInstance();
+
+		MonoMethod* simpleMethod = myClass.GetMethod("PrintFloatVar");
+		myClass.Invoke(simpleMethod, instance);
+
+		MonoMethod* methodWithArg = myClass.GetMethod("IncrementFloatVar", 1);
+
+		float increment = 2.0f;
+		float returnedValue = myClass.Invoke<float>(methodWithArg, instance, &increment);
+
+		Log.EngineLogger.Info($"C# returned: {returnedValue}");
+
+		Mono.mono_runtime_invoke(simpleMethod, instance, null, null);
+	}
+
+	[LinkName(.C), AlwaysInclude, Export]
+	public static void DoSomething()
+	{
+		Console.WriteLine("P/Invoke: Hallo von der Engine!");
+	}
+
+	[LinkName(.C), AlwaysInclude, Export]
+	public static void Add(in Vector3 a, in Vector3 b, out Vector3 c)
+	{
+		c = a + b;
+	}
+	
+	[LinkName(.C), AlwaysInclude]
+	public static MonoString* Sample()
+	{
+	  return Mono.mono_string_new(Mono.mono_domain_get(), "Hello!");
+	}
+
 	private static void PrintAssemblyTypes(MonoAssembly* assembly)
 	{
 	    MonoImage* image = Mono.mono_assembly_get_image(assembly);
@@ -114,17 +234,5 @@ static class ScriptEngine
 
 			Log.EngineLogger.Info($"{StringView(nameSpace)}.{StringView(name)}");
 	    }
-	}
-
-	public static void Shutdown()
-	{
-		/*Mono.mono_assembly_close(s_CoreAssembly);
-		s_CoreAssembly = null;
-		
-		Mono.mono_domain_unload(s_AppDomain);
-		s_AppDomain = null;*/
-
-		Mono.mono_jit_cleanup(s_RootDomain);
-		s_RootDomain = null;
-	}
+	}*/
 }

GlitchyEngine/src/Scripting/ScriptGlue.bf

@@ -0,0 +1,131 @@
+using Mono;
+using System;
+using GlitchLog;
+using System.Reflection;
+using GlitchyEngine.Events;
+using GlitchyEngine.Math;
+using GlitchyEngine.World;
+using GlitchyEngine.Core;
+
+namespace GlitchyEngine.Scripting;
+
+static class ScriptGlue
+{
+	struct RegisterCallAttribute : Attribute
+	{
+		public String MethodName;
+
+		public this(String methodName)
+		{
+			MethodName = methodName;
+		}
+	}
+
+	/* Adding this attribute to a method will log method entry and returned Result<T> errors */
+	[AttributeUsage(.Method)]
+	struct RegisterMethodAttribute : Attribute, IOnMethodInit
+	{
+	    [Comptime]
+	    public void OnMethodInit(MethodInfo method, Self* prev)
+	    {
+	        for (var methodInfo in typeof(ScriptGlue).GetMethods(.Static))
+			{
+				if (methodInfo.GetCustomAttribute<RegisterCallAttribute>() case .Ok(let attribute))
+				{
+					String functionType = scope $"{methodInfo.ReturnType}({methodInfo.GetParamsDecl(.. scope .())})";
+
+					String line = scope $"RegisterCall<function {functionType}>(\"{attribute.MethodName}\", => {methodInfo.Name});\n";
+
+					Compiler.EmitMethodEntry(method, line);
+				}
+			}
+	    }
+	}
+
+	public static void Init()
+	{
+		RegisterCalls();
+	}
+
+	[RegisterMethod]
+	private static void RegisterCalls()
+	{
+		// Generated at CompTime
+	}
+
+
+	[RegisterCall("Log::LogMessage_Impl")]
+	static void Log(int32 logLevel, MonoString* message)
+	{
+		char8* utfMessage = Mono.mono_string_to_utf8(message);
+
+		Log.ClientLogger.Log((LogLevel)logLevel, StringView(utfMessage));
+
+		Mono.mono_free(utfMessage);
+	}
+
+#region Input
+
+	[RegisterCall("Input::IsKeyPressed")]
+	static bool Input_IsKeyPressed(Key key) => Input.IsKeyPressed(key);
+
+	[RegisterCall("Input::IsKeyReleased")]
+	static bool Input_IsKeyReleased(Key key) => Input.IsKeyReleased(key);
+	
+	[RegisterCall("Input::IsKeyToggled")]
+	static bool Input_IsKeyToggled(Key key) => Input.IsKeyToggled(key);
+
+	[RegisterCall("Input::IsKeyPressing")]
+	static bool Input_IsKeyPressing(Key key) => Input.IsKeyPressing(key);
+
+	[RegisterCall("Input::IsKeyReleasing")]
+	static bool Input_IsKeyReleasing(Key key) => Input.IsKeyReleasing(key);
+
+	
+	[RegisterCall("Input::IsMouseButtonPressed")]
+	static bool Input_IsMouseButtonPressed(MouseButton mouseButton) => Input.IsMouseButtonPressed(mouseButton);
+
+	[RegisterCall("Input::IsMouseButtonReleased")]
+	static bool Input_IsMouseButtonReleased(MouseButton mouseButton) => Input.IsMouseButtonReleased(mouseButton);
+
+	[RegisterCall("Input::IsMouseButtonPressing")]
+	static bool Input_IsMouseButtonPressing(MouseButton mouseButton) => Input.IsMouseButtonPressing(mouseButton);
+
+	[RegisterCall("Input::IsMouseButtonReleasing")]
+	static bool Input_IsMouseButtonReleasing(MouseButton mouseButton) => Input.IsMouseButtonReleasing(mouseButton);
+
+#endregion Input
+
+#region Scene/Entity stuff
+	
+	/*[RegisterCall("Input::IsMouseButtonReleasing")]
+	static void Destroy()
+	{
+		// TODO:
+	}*/
+
+	[RegisterCall("ScriptGlue::Entity_GetTranslation")]
+	static void Entity_GetTranslation(UUID entityId, ref Vector3 translation)
+	{
+		Scene scene = ScriptEngine.Context;
+		Entity entity = scene.GetEntityByID(entityId);
+
+		translation = entity.Transform.Position;
+	}
+	
+	[RegisterCall("ScriptGlue::Entity_SetTranslation")]
+	static void Entity_SetTranslation(UUID entityId, ref Vector3 translation)
+	{
+		Scene scene = ScriptEngine.Context;
+		Entity entity = scene.GetEntityByID(entityId);
+
+		entity.Transform.Position = translation;
+	}
+
+#endregion
+
+	private static void RegisterCall<T>(String name, T method) where T : var
+	{
+		Mono.mono_add_internal_call(scope $"GlitchyEngine.{name}", (void*)method);
+	}
+}

GlitchyEngine/src/Scripting/ScriptInstance.bf

@@ -0,0 +1,52 @@
+using Mono;
+using GlitchyEngine.Core;
+
+namespace GlitchyEngine.Scripting;
+
+class ScriptInstance : RefCounter
+{
+	private ScriptClass _scriptClass;
+
+	private MonoObject* _instance;
+	private uint32 _gcHandle;
+
+	public ScriptClass ScriptClass => _scriptClass;
+
+	public bool IsInstatiated => _instance != null;
+
+	public this(ScriptClass scriptClass)
+	{
+		Log.EngineLogger.AssertDebug(scriptClass != null);
+		_scriptClass = scriptClass;
+	}
+
+	private ~this()
+	{
+		if (_instance != null)
+		{
+			_scriptClass.OnDestroy(_instance);
+			Mono.mono_gchandle_free(_gcHandle);
+		}
+	}
+
+	public void Instantiate(UUID uuid)
+	{
+		_instance = _scriptClass.CreateInstance(uuid);
+		_gcHandle = Mono.mono_gchandle_new(_instance, true);
+	}
+
+	public void InvokeOnCreate()
+	{
+		_scriptClass.OnCreate(_instance);
+	}
+
+	public void InvokeOnUpdate(float deltaTime)
+	{
+		_scriptClass.OnUpdate(_instance, deltaTime);
+	}
+
+	public void InvokeOnDestroy()
+	{
+		_scriptClass.OnDestroy(_instance);
+	}
+}

GlitchyEngine/src/World/Components/Components.bf

@@ -4,6 +4,8 @@ using GlitchyEngine.Renderer;
 using GlitchyEngine.Core;
 using Box2D;
 using GlitchyEngine.Content;
+using GlitchyEngine.Scripting;
+using Mono;
 
 namespace GlitchyEngine.World
 {
@@ -442,4 +444,26 @@ namespace GlitchyEngine.World
 		[Inline]
 		internal ref b2Vec2 b2Offset mut => ref *(Box2D.b2Vec2*)(void*)&Offset;
 	}
+
+	struct ScriptComponent : IDisposableComponent
+	{
+		private ScriptInstance _instance = null;
+
+		public ScriptInstance Instance
+		{
+			[Inline]
+			get => _instance;
+			[Inline]
+			set mut => SetReference!(_instance, value);
+		}
+
+		public bool InInstantiated => _instance?.IsInstatiated ?? false;
+
+		public void Dispose() mut
+		{
+			ReleaseRefAndNullify!(_instance);
+
+
+		}
+	}
 }

GlitchyEngine/src/World/Scene.bf

@@ -5,6 +5,7 @@ using System.Collections;
 using Box2D;
 using GlitchyEngine.Core;
 using GlitchyEngine.Content;
+using GlitchyEngine.Scripting;
 
 namespace GlitchyEngine.World
 {
@@ -75,6 +76,7 @@ namespace GlitchyEngine.World
 			CopyComponents<Rigidbody2DComponent>(this, target);
 			CopyComponents<BoxCollider2DComponent>(this, target);
 			CopyComponents<CircleCollider2DComponent>(this, target);
+			CopyComponents<ScriptComponent>(this, target);
 			
 			// Copy transforms
 			for (let (sourceHandle, sourceTransform) in _ecsWorld.Enumerate<TransformComponent>())
@@ -127,10 +129,12 @@ namespace GlitchyEngine.World
 		public void OnRuntimeStart()
 		{
 			OnSimulationStart();
+			ScriptEngine.SetContext(this);
 		}
 
 		public void OnRuntimeStop()
 		{
+			ScriptEngine.SetContext(null);
 			OnSimulationStop();
 		}
 		
@@ -211,6 +215,8 @@ namespace GlitchyEngine.World
 			Runtime = 0x04 | Physics,
 		}
 
+		//private append List<UUID> _destroyQueue = .();
+
 		public void Update(GameTime gameTime, UpdateMode mode)
 		{
 			Debug.Profiler.ProfileRendererFunction!();
@@ -231,6 +237,17 @@ namespace GlitchyEngine.World
 	
 					script.Instance.[Friend]OnUpdate(gameTime);
 				}
+
+				// Run scripts
+				for (var (entity, script) in _ecsWorld.Enumerate<ScriptComponent>())
+				{
+					if (!script.InInstantiated)
+					{
+						ScriptEngine.InitializeInstance(Entity(entity, this), script);
+					}
+	
+					script.Instance.InvokeOnUpdate(gameTime.DeltaTime);
+				}
 			}
 			
 			if (mode.HasFlag(.Physics))

GlitchyEngineHelper/src/Mono/Mono.bf

@@ -61,6 +61,7 @@ static class Mono
 	public static extern char8* mono_metadata_string_heap(MonoImage *meta, uint32 table_index);
 
 	typealias gconstpointer = void*;
+	typealias gpointer = void*;
 
 	[LinkName(.C)]
 	public static extern void mono_add_internal_call(char8* name, gconstpointer method);
@@ -96,6 +97,32 @@ static class Mono
 	
 	[LinkName(.C)]
 	public static extern void* mono_domain_unload(MonoDomain* domain);
+
+	
+	[LinkName(.C)]
+	public static extern gpointer mono_method_get_unmanaged_thunk(MonoMethod *method);
+	
+	[LinkName(.C)]
+	public static extern mono_bool mono_class_is_subclass_of(MonoClass *monoClass, MonoClass *parentClass,
+		mono_bool check_interfaces);
+
+	[LinkName(.C)]
+	public static extern uint32 mono_gchandle_new(MonoObject* obj, mono_bool pinned);
+	
+	[LinkName(.C)]
+	public static extern void mono_gchandle_free(uint32 gchandle);
+	
+	[LinkName(.C)]
+	public static extern char8* mono_string_to_utf8(MonoString *s);
+	
+	[LinkName(.C)]
+	public static extern void mono_free(void* ptr);
+	
+	[LinkName(.C)]
+	public static extern MonoClassField* mono_class_get_field_from_name(MonoClass* monoClass, char8* name);
+
+	[LinkName(.C)]
+	public static extern void mono_field_set_value(MonoObject* obj, MonoClassField* field, void* value);
 }
 
 struct MonoDomain;
@@ -114,6 +141,10 @@ struct MonoObject;
 
 struct MonoMethod;
 
+struct MonoException;
+
+struct MonoClassField;
+
 enum MonoImageOpenStatus
 {
 	Ok,

ScriptCore/CSharpTesting.cs

@@ -1,11 +1,12 @@
 using System;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
+using GlitchyEngine.Math;
 
-namespace GlitchyEngine
+namespace GlitchyEngine;
+
+public class CSharpTesting
 {
-    public class CSharpTesting
-    {
     public float MyPublicFloatVar = 5.0f;
     
 	public CSharpTesting()
@@ -13,6 +14,14 @@ namespace GlitchyEngine
 		Console.WriteLine("Hallo von C#!");
         DoSomething();
         Console.WriteLine(Sample());
+
+        Vector3 a = new Vector3(1, 2, 3);
+        Vector3 b = new Vector3(3, 2, 1);
+
+        Vector3 result;
+        //Vector3.Add_Internal(a, b, out result);
+
+        //Console.WriteLine(result);
     }
     
     [DllImport ("__Internal", EntryPoint="DoSomething")]
@@ -32,5 +41,4 @@ namespace GlitchyEngine
 
         return MyPublicFloatVar;
     }
-    }
 }

ScriptCore/Components/Component.cs

@@ -0,0 +1,8 @@
+using GlitchyEngine.Core;
+
+namespace GlitchyEngine;
+
+public class Component : EngineObject
+{
+
+}

ScriptCore/Components/Transform.cs

@@ -0,0 +1,8 @@
+using GlitchyEngine.Core;
+
+namespace GlitchyEngine;
+
+public class Transform : EngineObject
+{
+
+}

ScriptCore/Core/EngineObject.cs

@@ -0,0 +1,26 @@
+namespace GlitchyEngine.Core;
+
+public class EngineObject
+{
+    protected internal UUID _uuid;
+
+    /// <summary>
+    /// UUID used for identifying the object in the engine.
+    /// </summary>
+    public UUID UUID => _uuid;
+
+    /// <summary>
+    /// Empty constructor not used. Do NOT USE!
+    /// </summary>
+    protected EngineObject()
+    {}
+
+    /// <summary>
+    /// Creates a new EngineObject with the given ID.
+    /// </summary>
+    /// <param name="uuid">UUID of the object.</param>
+    internal EngineObject(UUID uuid)
+    {
+        _uuid = uuid;
+    }
+}

ScriptCore/Core/UUID.cs

@@ -0,0 +1,6 @@
+namespace GlitchyEngine.Core;
+
+public struct UUID
+{
+    private ulong _uuid;
+}

ScriptCore/Entity.cs

@@ -0,0 +1,56 @@
+using System;
+using GlitchyEngine.Core;
+using GlitchyEngine.Math;
+
+namespace GlitchyEngine;
+
+internal struct EntityHandle
+{
+    public uint Version;
+    public uint Index;
+}
+
+public abstract class Entity : EngineObject
+{
+    //private UUID _uuid;
+
+    //public UUID UUID => _uuid;
+
+    ///// <summary>
+    ///// Empty constructor not used. Do NOT USE!
+    ///// </summary>
+    //protected Entity()
+    //{}
+
+    //internal Entity(UUID uuid)
+    //{
+    //    _uuid = uuid;
+    //}
+
+    public T GetComponent<T>() where T : Component
+    {
+        return null;
+    }
+
+    //public Transform Transform => new (){_uuid = _uuid};
+
+    public Vector3 Translation
+    {
+        get
+        {
+            ScriptGlue.Entity_GetTranslation(_uuid, out Vector3 translation);
+            return translation;
+        }
+
+        set => ScriptGlue.Entity_SetTranslation(_uuid, value);
+    }
+    
+    // Will be executed once after the entity as be created.
+    // void OnCreate();
+
+    // Will be executed every frame.
+    // void OnUpdate(GameTime);
+
+    // Will be executed once when the entity is being destroyed.
+    // void OnDestroy();
+}

ScriptCore/Input.cs

@@ -0,0 +1,27 @@
+using System.Runtime.CompilerServices;
+
+namespace GlitchyEngine;
+
+public static class Input
+{
+    [MethodImpl(MethodImplOptions.InternalCall)]
+    public static extern bool IsKeyPressed(Key key);
+    [MethodImpl(MethodImplOptions.InternalCall)]
+    public static extern bool IsKeyReleased(Key key);
+    [MethodImpl(MethodImplOptions.InternalCall)]
+    public static extern bool IsKeyToggled(Key key);
+
+    [MethodImpl(MethodImplOptions.InternalCall)]
+    public static extern bool IsKeyPressing(Key key);
+    [MethodImpl(MethodImplOptions.InternalCall)]
+    public static extern bool IsKeyReleasing(Key key);
+    
+    [MethodImpl(MethodImplOptions.InternalCall)]
+    public static extern bool IsMouseButtonPressed(MouseButton mouseButton);
+    [MethodImpl(MethodImplOptions.InternalCall)]
+    public static extern bool IsMouseButtonReleased(MouseButton mouseButton);
+    [MethodImpl(MethodImplOptions.InternalCall)]
+    public static extern bool IsMouseButtonPressing(MouseButton mouseButton);
+    [MethodImpl(MethodImplOptions.InternalCall)]
+    public static extern bool IsMouseButtonReleasing(MouseButton mouseButton);
+}

ScriptCore/Key.cs

@@ -0,0 +1,120 @@
+namespace GlitchyEngine;
+
+public enum Key
+{
+	// Based on Win32 Virtual Keys
+	LeftButton		= 1,	// Left mouse button
+	RightRutton	= 2,	// Right mouse button
+	MiddleButton   = 4,	// Middle mouse button(three - button mouse)
+	XButton1 		= 5,	// X1 mouse button
+	XButton2 		= 6,	// X2 mouse button
+	Backspace 		= 8,	// Backspace key
+	Tab 			= 9,	// Tab key
+	Return 		= 13,	// Enter key
+	Shift 			= 16,	// Shift key
+	Control 		= 17,	// Ctrl key
+	Alt 			= 18,	// Alt key
+	Pause 			= 19,	// Pause key
+	CapsLock		= 20,	// Caps Lock key
+	Escape 		= 27,	// ESC key
+	Space 			= 32,	// Spacebar
+	Prior 			= 33,	// Page Up key
+	Next 			= 34,	// Page Down key
+	End 			= 35,	// END key
+	Home 			= 36,	// HOME key
+	Left 			= 37,	// LEFT ARROW key
+	Up 			= 38,	// UP ARROW key
+	Right 			= 39,	// RIGHT ARROW key
+	Down 			= 40,	// DOWN ARROW key
+	Print 			= 42,	// PRINT key
+	Insert 		= 45,	// INS key
+	Delete 		= 46,	// DEL key
+	Help 			= 47,	// HELP key
+	Zero 			= 48,	// 0 key
+	One 			= 49,	// 1 key
+	Two 			= 50,	// 2 key
+	Three 			= 51,	// 3 key
+	Four 			= 52,	// 4 key
+	Five 			= 53,	// 5 key
+	Six 			= 54,	// 6 key
+	Seven 			= 55,	// 7 key
+	Eight 			= 56,	// 8 key
+	Nine 			= 57,	// 9 key
+	A 				= 65,	// A key
+	B 				= 66,	// B key
+	C 				= 67,	// C key
+	D 				= 68,	// D key
+	E 				= 69,	// E key
+	F 				= 70,	// F key
+	G 				= 71,	// G key
+	H 				= 72,	// H key
+	I 				= 73,	// I key
+	J 				= 74,	// J key
+	K 				= 75,	// K key
+	L 				= 76,	// L key
+	M 				= 77,	// M key
+	N 				= 78,	// N key
+	O 				= 79,	// O key
+	P 				= 80,	// P key
+	Q 				= 81,	// Q key
+	R 				= 82,	// R key
+	S 				= 83,	// S key
+	T 				= 84,	// T key
+	U 				= 85,	// U key
+	V 				= 86,	// V key
+	W 				= 87,	// W key
+	X 				= 88,	// X key
+	Y 				= 89,	// Y key
+	Z 				= 90,	// Z key
+	LeftSuper		= 91,	// Left Windows key(Microsoft® Natural® keyboard)
+	RightSuper		= 92,	// Right Windows key(Natural keyboard)
+	ContextMenu	= 93,	// Context Menu key (VK_APPS)
+	Numpad0 		= 96,	// Numeric keypad 0 key
+	Numpad1 		= 97,	// Numeric keypad 1 key
+	Numpad2 		= 98,	// Numeric keypad 2 key
+	Numpad3 		= 99,	// Numeric keypad 3 key
+	Numpad4 		= 100,	// Numeric keypad 4 key
+	Numpad5 		= 101,	// Numeric keypad 5 key
+	Numpad6 		= 102,	// Numeric keypad 6 key
+	Numpad7 		= 103,	// Numeric keypad 7 key
+	Numpad8 		= 104,	// Numeric keypad 8 key
+	Numpad9 		= 105,	// Numeric keypad 9 key
+	Multiply 		= 106,	// Multiply key
+	Add 			= 107,	// Add key
+	Separator 		= 108,	// Separator key
+	Subtract 		= 109,	// Subtract key
+	Decimal 		= 110,	// Decimal key
+	Divide 		= 111,	// Divide key
+	F1 			= 112,	// F1 key
+	F2 			= 113,	// F2 key
+	F3 			= 114,	// F3 key
+	F4 			= 115,	// F4 key
+	F5 			= 116,	// F5 key
+	F6 			= 117,	// F6 key
+	F7 			= 118,	// F7 key
+	F8 			= 119,	// F8 key
+	F9 			= 120,	// F9 key
+	F10 			= 121,	// F10 key
+	F11 			= 122,	// F11 key
+	F12 			= 123,	// F12 key
+	F13 			= 124,	// F13 key
+	F14 			= 125,	// F14 key
+	F15 			= 126,	// F15 key
+	F16 			= 127,	// F16 key
+	F17 			= 128,	// F17 key
+	F18 			= 129,	// F18 key
+	F19 			= 130,	// F19 key
+	F20 			= 131,	// F20 key
+	F21 			= 132,	// F21 key
+	F22 			= 133,	// F22 key
+	F23 			= 134,	// F23 key
+	F24 			= 135,	// F24 key
+	Numlock 		= 144,	// NUM LOCK key
+	Scroll 		= 145,	// SCROLL LOCK key
+	LeftShift 		= 160,	// Left SHIFT key
+	RightShift 	= 161,	// Right SHIFT key
+	LeftControl 	= 162,	// Left CONTROL key
+	RightControl	= 163,	// Right CONTROL key
+	LeftAlt 		= 164,	// Left Alt key
+	RightAlt 		= 165	// Right Alt key
+}

ScriptCore/Log.cs

@@ -0,0 +1,50 @@
+using System.Runtime.CompilerServices;
+
+namespace GlitchyEngine;
+
+public class Log
+{
+    public enum LogLevel
+    {
+        Trace = 0,
+        Debug,
+        Info,
+        Warning,
+        Error,
+        Critical,
+        Off
+    }
+    
+    public static void Trace(string message)
+    {
+        LogMessage_Impl(LogLevel.Trace, message);
+    }
+
+    //public static void LogDebug(string message)
+    //{
+    //    LogMessage_Impl(LogLevel.Info, message);
+    //}
+
+    public static void Info(string message)
+    {
+        LogMessage_Impl(LogLevel.Info, message);
+    }
+
+    public static void Warning(string message)
+    {
+        LogMessage_Impl(LogLevel.Warning, message);
+    }
+
+    public static void Error(string message)
+    {
+        LogMessage_Impl(LogLevel.Error, message);
+    }
+
+    public static void Critical(string message)
+    {
+        LogMessage_Impl(LogLevel.Critical, message);
+    }
+    
+    [MethodImpl(MethodImplOptions.InternalCall)]
+    public static extern string LogMessage_Impl(LogLevel logLevel, string message);
+}

ScriptCore/Math/Vector2.cs

@@ -0,0 +1,53 @@
+using System;
+
+namespace GlitchyEngine.Math;
+
+public struct Vector2
+{
+    public static readonly Vector2 Zero = new(0.0f, 0.0f);
+    public static readonly Vector2 UnitX = new(1.0f, 0.0f);
+    public static readonly Vector2 UnitY = new(0.0f, 1.0f);
+    public static readonly Vector2 One = new(0.0f, 0.0f);
+    
+    public const int ComponentCount = 2;
+
+    public float X, Y;
+
+    public Vector2()
+    {
+        X = Y = 0.0f;
+    }
+
+    public Vector2(float x, float y)
+    {
+        X = x;
+        Y = y;
+    }
+
+    public float this[int index]
+    {
+        get
+        {
+            switch(index)
+            {
+                case 0: return X;
+                case 1: return Y;
+                default: throw new IndexOutOfRangeException();
+            }
+        }
+
+        set
+        {
+            switch(index)
+            {
+                case 0:
+                    X = value;
+                    break;
+                case 1:
+                    Y = value;
+                    break;
+                default: throw new IndexOutOfRangeException();
+            }
+        }
+    }
+}

ScriptCore/Math/Vector3.cs

@@ -0,0 +1,128 @@
+using System;
+using System.CodeDom;
+using System.Runtime.CompilerServices;
+
+namespace GlitchyEngine.Math;
+
+public struct Vector3
+{
+    public static readonly Vector3 Zero = new(0.0f, 0.0f, 0.0f);
+    public static readonly Vector3 UnitX = new(1.0f, 0.0f, 0.0f);
+    public static readonly Vector3 UnitY = new(0.0f, 1.0f, 0.0f);
+    public static readonly Vector3 UnitZ = new(0.0f, 0.0f, 1.0f);
+    public static readonly Vector3 One = new(0.0f, 0.0f, 0.0f);
+
+    public static readonly Vector3 Forward = new(0.0f, 0.0f, 1.0f);
+    public static readonly Vector3 Backward = new(0.0f, 0.0f, -1.0f);
+    public static readonly Vector3 Left = new(-1.0f, 0.0f, 0.0f);
+    public static readonly Vector3 Right = new(1.0f, 0.0f, 0.0f);
+    public static readonly Vector3 Up = new(0.0f, 1.0f, 0.0f);
+    public static readonly Vector3 Down = new(0.0f, -1.0f, 0.0f);
+
+    public const int ComponentCount = 3;
+
+    public float X, Y, Z;
+
+    public Vector3()
+    {
+        X = Y = Z = 0.0f;
+    }
+
+    public Vector3(float x, float y, float z)
+    {
+        X = x;
+        Y = y;
+        Z = z;
+    }
+    public Vector3(Vector2 xy, float z)
+    {
+        X = xy.X;
+        Y = xy.Y;
+        Z = z;
+    }
+
+    public float this[int index]
+    {
+        get
+        {
+            switch(index)
+            {
+                case 0: return X;
+                case 1: return Y;
+                case 2: return Z;
+                default: throw new IndexOutOfRangeException();
+            }
+        }
+
+        set
+        {
+            switch(index)
+            {
+                case 0:
+                    X = value;
+                    break;
+                case 1:
+                    Y = value;
+                    break;
+                case 2:
+                    Z = value;
+                    break;
+                default: throw new IndexOutOfRangeException();
+            }
+        }
+    }
+    
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector3 operator +(in Vector3 a, in Vector3 b) => new(a.X + b.X, a.Y + b.Y, a.Z + b.Z);
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector3 operator +(float a, in Vector3 b) => new(a + b.X, a + b.Y, a + b.Z);
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector3 operator +(in Vector3 a, float b) => new(a.X + b, a.Y + b, a.Z + b);
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector3 operator +(in Vector3 a) => a;
+    
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector3 operator -(in Vector3 a, in Vector3 b) => new(a.X - b.X, a.Y - b.Y, a.Z - b.Z);
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector3 operator -(float a, in Vector3 b) => new(a - b.X, a - b.Y, a - b.Z);
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector3 operator -(in Vector3 a, float b) => new(a.X - b, a.Y - b, a.Z - b);
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector3 operator -(in Vector3 a) => new Vector3(-a.X, -a.Y, -a.Z);
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector3 operator *(in Vector3 a, in Vector3 b) => new(a.X * b.X, a.Y * b.Y, a.Z * b.Z);
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector3 operator *(float a, in Vector3 b) => new(a * b.X, a * b.Y, a * b.Z);
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector3 operator *(in Vector3 a, float b) => new(a.X * b, a.Y * b, a.Z * b);
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector3 operator /(in Vector3 a, in Vector3 b) => new(a.X / b.X, a.Y / b.Y, a.Z / b.Z);
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector3 operator /(float a, in Vector3 b) => new(a / b.X, a / b.Y, a / b.Z);
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector3 operator /(in Vector3 a, float b) => new(a.X / b, a.Y / b, a.Z / b);
+
+    
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static bool operator ==(Vector3 a, Vector3 b)
+    {
+        float diffX = a.X - b.X;
+        float diffY = a.Y - b.Y;
+        float diffZ = a.Z - b.Z;
+
+        return diffX * diffX + diffY * diffY + diffZ * diffZ < 0.00001f;
+    }
+    
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static bool operator !=(Vector3 a, Vector3 b)
+    {
+        return !(a == b);
+    }
+
+    public override string ToString()
+    {
+        return $"X:{X}, Y:{Y}, Z:{Z}";
+    }
+}

ScriptCore/MouseButton.cs

@@ -0,0 +1,11 @@
+namespace GlitchyEngine;
+
+public enum MouseButton : byte
+{
+    None = 0,
+    LeftButton,
+    RightButton,
+    MiddleButton,
+    XButton1,
+    XButton2,
+}

ScriptCore/MyTestEntity.cs

@@ -0,0 +1,59 @@
+using System;
+using GlitchyEngine.Math;
+
+namespace GlitchyEngine;
+
+class MyTestEntity : Entity
+{
+    //Rigidbody2D _rigidBody;
+
+    /// <summary>
+    /// Called after the script component was created. (The entity might not be fully created yet)
+    /// </summary>
+    void OnCreate()
+    {
+        Log.Info($"Create! {UUID}");
+
+        //_rigidBody = GetComponent<Rigidbody2D>();
+    }
+
+    ///// <summary>
+    ///// Called after the entity was created completely.
+    ///// </summary>
+    //void OnInstantiate()
+    //{
+    //    Log.Warning($"Instantiated!");
+    //}
+
+    /// <summary>
+    /// Called every frame.
+    /// </summary>
+    /// <param name="deltaTime"></param>
+    void OnUpdate(float deltaTime)
+    {
+        if (Input.IsKeyPressed(Key.A))
+        {
+            Log.Info($"HALLO!");
+
+            Vector3 translation = Translation;
+            translation.Y += 1.0f * deltaTime;
+
+            Translation = translation;
+
+            //_rigidBody.ApplyImpulse(new Vector2(0, 10));
+        }
+
+        if (Input.IsMouseButtonReleasing(MouseButton.LeftButton))
+        {
+            Log.Info("Ouha!");
+        }
+    }
+
+    /// <summary>
+    /// Called before the component is being destroyed.
+    /// </summary>
+    void OnDestroy()
+    {
+        Log.Trace("Destroy");
+    }
+}

ScriptCore/ScriptCore.csproj

@@ -43,8 +43,21 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="Components\Component.cs" />
+    <Compile Include="Components\Transform.cs" />
+    <Compile Include="Core\EngineObject.cs" />
+    <Compile Include="Core\UUID.cs" />
     <Compile Include="CSharpTesting.cs" />
+    <Compile Include="Entity.cs" />
+    <Compile Include="Input.cs" />
+    <Compile Include="Key.cs" />
+    <Compile Include="Log.cs" />
+    <Compile Include="Math\Vector2.cs" />
+    <Compile Include="Math\Vector3.cs" />
+    <Compile Include="MouseButton.cs" />
+    <Compile Include="MyTestEntity.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="ScriptGlue.cs" />
   </ItemGroup>
   <ItemGroup />
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

ScriptCore/ScriptGlue.cs

@@ -0,0 +1,16 @@
+using System.Runtime.CompilerServices;
+using GlitchyEngine.Core;
+using GlitchyEngine.Math;
+
+namespace GlitchyEngine;
+
+/// <summary>
+/// All methods in here are glued to the ScriptGlue.bf in the engine.
+/// </summary>
+internal static class ScriptGlue
+{
+    [MethodImpl(MethodImplOptions.InternalCall)]
+    internal static extern void Entity_GetTranslation(UUID entityId, out Vector3 translation);
+    [MethodImpl(MethodImplOptions.InternalCall)]
+    internal static extern void Entity_SetTranslation(UUID entityId, in Vector3 translation);
+}