Wer weiß, was ich alles so gemacht hatte...

- Fixed crash caused by early ScriptEngine shutdown

GlitchyEditor/src/EditWindows/ComponentEditWindow.bf

@@ -459,6 +459,14 @@ namespace GlitchyEditor.EditWindows
 
 				ImGui.EndCombo();
 			}
+
+			if (scriptComponent.Instance?.ScriptClass != null)
+			{
+				for (let (fieldName, scriptField) in scriptComponent.Instance?.ScriptClass.Fields)
+				{
+					ImGui.TextUnformatted(fieldName);
+				}
+			}
 		}
 
 		private static void LabelColumn(StringView label)

GlitchyEngine/src/Application.bf

@@ -93,7 +93,6 @@ namespace GlitchyEngine
 
 			SamplerStateManager.Uninit();
 
-			ScriptEngine.Shutdown();
 			Renderer.Deinit();
 
 			delete _contentManager;
@@ -103,6 +102,8 @@ namespace GlitchyEngine
 			
 			delete _gameTime;
 			delete _layerStack;
+
+			ScriptEngine.Shutdown();
 		}
 
 		public void OnEvent(Event e)

GlitchyEngine/src/Scripting/ScriptClass.bf

@@ -1,9 +1,24 @@
 using Mono;
 using System;
 using GlitchyEngine.Core;
+using System.Collections;
 
 namespace GlitchyEngine.Scripting;
 
+using internal GlitchyEngine.Scripting;
+
+public struct ScriptField
+{
+	public StringView Name;
+	internal MonoClassField* _monoField;
+
+	internal this(StringView name, MonoClassField* monoField)
+	{
+		Name = name;
+		_monoField = monoField;
+	}
+}
+
 class ScriptClass : RefCounter
 {
 	private String _namespace ~ delete _;
@@ -12,6 +27,9 @@ class ScriptClass : RefCounter
 
 	private MonoClass* _monoClass;
 
+	//private List<MonoClassField*> _monoFields ~ delete _;
+	private Dictionary<StringView, ScriptField> _monoFields ~ delete _;
+
 	//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);
@@ -27,6 +45,8 @@ class ScriptClass : RefCounter
 	public StringView ClassName => _className;
 	public StringView FullName => _fullName;
 
+	public Dictionary<StringView, ScriptField> Fields => _monoFields;
+
 	[AllowAppend]
 	public this(StringView classNamespace, StringView className)
 	{
@@ -41,6 +61,24 @@ class ScriptClass : RefCounter
 		_onCreate = (OnCreateMethod)GetMethodThunk("OnCreate");
 		_onUpdate = (OnUpdateMethod)GetMethodThunk("OnUpdate", 1);
 		_onDestroy = (OnDestroyMethod)GetMethodThunk("OnDestroy");
+
+		ExtractFields();
+	}
+
+	private void ExtractFields()
+	{
+		//_monoFields = new List<MonoClassField*>();´
+		_monoFields = new Dictionary<StringView, ScriptField>();
+		
+		void* iterator = null;
+		MonoClassField* currentField = null;
+		while ((currentField = Mono.mono_class_get_fields(_monoClass, &iterator)) != null)
+		{
+			// TODO: does the pointer from mono really never move?
+			StringView name = StringView(Mono.mono_field_get_name(currentField));
+
+			_monoFields[name] = .(name, currentField);
+		}
 	}
 
 	public void OnCreate(MonoObject* instance)

GlitchyEngine/src/Scripting/ScriptEngine.bf

@@ -129,19 +129,58 @@ static class ScriptEngine
 	    MonoTableInfo* typeDefinitionsTable = Mono.mono_image_get_table_info(image, .MONO_TABLE_TYPEDEF);
 	    int32 numTypes = Mono.mono_table_info_get_rows(typeDefinitionsTable);
 
+	    /*MonoTableInfo* fieldsTable = Mono.mono_image_get_table_info(image, .MONO_TABLE_FIELD);
+	    int32 numFields = Mono.mono_table_info_get_rows(fieldsTable);*/
+
 		s_EngineObject = new ScriptClass("GlitchyEngine.Core", "EngineObject");
 		s_EntityRoot = new ScriptClass("GlitchyEngine", "Entity");
 
 		Log.EngineLogger.Assert(s_EntityRoot != null);
 
+		/*for (int32 fieldIndex < numFields)
+		{
+			uint32[(.)FIELD_TABLE_FLAGS.MONO_FIELD_SIZE] fieldCols = .();
+			Mono.mono_metadata_decode_row(fieldsTable, fieldIndex, (.)&fieldCols, (.)FIELD_TABLE_FLAGS.MONO_FIELD_SIZE);
+			
+			char8* fieldName = Mono.mono_metadata_string_heap(image, (.)fieldCols[(.)FIELD_TABLE_FLAGS.MONO_FIELD_NAME]);
+			Log.EngineLogger.Info($"{StringView(fieldName)}");
+		}*/
+
 	    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]);
+			char8* name = Mono.mono_metadata_string_heap(image, (.)cols[(.)SOME_RANDOM_ENUM.MONO_TYPEDEF_NAME]);
+			
+			/*int32 firstFieldIndex = cols[(.)SOME_RANDOM_ENUM.MONO_TYPEDEF_FIELD_LIST] - 1;
+			if (firstFieldIndex >= 0)
+			{
+				int32 lastFieldIndex;
 
+				if ((i + 1) < numTypes)
+				{
+					int32[(.)SOME_RANDOM_ENUM.MONO_TYPEDEF_SIZE] nextCols = .();
+					Mono.mono_metadata_decode_row(typeDefinitionsTable, i + 1, (.)&nextCols, (.)SOME_RANDOM_ENUM.MONO_TYPEDEF_SIZE);
+					lastFieldIndex = nextCols[(.)SOME_RANDOM_ENUM.MONO_TYPEDEF_FIELD_LIST] - 1;
+				}
+				else
+				{
+					lastFieldIndex = numFields;
+				}
+
+				for (int32 fieldIndex = firstFieldIndex; fieldIndex < lastFieldIndex; fieldIndex++)
+				{
+					uint32[(.)FIELD_TABLE_FLAGS.MONO_FIELD_SIZE] fieldCols = .();
+					Mono.mono_metadata_decode_row(fieldsTable, fieldIndex, (.)&fieldCols, (.)FIELD_TABLE_FLAGS.MONO_FIELD_SIZE);
+					
+					char8* fieldName = Mono.mono_metadata_string_heap(image, (.)fieldCols[(.)FIELD_TABLE_FLAGS.MONO_FIELD_NAME]);
+					Log.EngineLogger.Info($"{StringView(nameSpace)}.{StringView(name)}::{StringView(fieldName)}");
+					//char8* fieldSignature = Mono.mono_metadata_blob_heap(image, (.)fieldCols[(.)FIELD_TABLE_FLAGS.MONO_FIELD_SIGNATURE]);
+				}
+			}*/
+			
 			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))

GlitchyEngine/src/Scripting/ScriptGlue.bf

@@ -7,6 +7,7 @@ using GlitchyEngine.Math;
 using GlitchyEngine.World;
 using GlitchyEngine.Core;
 using System.Collections;
+using Box2D;
 
 namespace GlitchyEngine.Scripting;
 
@@ -94,7 +95,6 @@ static class ScriptGlue
 		}
 	}
 
-
 	[RegisterCall("Log::LogMessage_Impl")]
 	static void Log(int32 logLevel, MonoString* message)
 	{
@@ -147,8 +147,8 @@ static class ScriptGlue
 		Entity entity = ScriptEngine.Context.GetEntityByID(entityId);
 		if (s_AddComponentMethods.TryGetValue(type, let addMethod))
 			addMethod(entity);
-
-		Log.EngineLogger.AssertDebug(false, "No managed component with the given type registered.");
+		else
+			Log.EngineLogger.AssertDebug(false, "No managed component with the given type registered.");
 	}
 	
 	[RegisterCall("ScriptGlue::Entity_HasComponent")]
@@ -173,8 +173,8 @@ static class ScriptGlue
 		Entity entity = ScriptEngine.Context.GetEntityByID(entityId);
 		if (s_RemoveComponentMethods.TryGetValue(type, let removeMethod))
 			removeMethod(entity);
-
-		Log.EngineLogger.AssertDebug(false, "No managed component with the given type registered.");
+		else
+			Log.EngineLogger.AssertDebug(false, "No managed component with the given type registered.");
 	}
 	/*[RegisterCall("Input::IsMouseButtonReleasing")]
 	static void Destroy()
@@ -230,6 +230,30 @@ static class ScriptGlue
 
 #endregion RigidBody2D
 
+#region Physics2D
+
+	// TODO: We need a wrapper class!
+
+	[RegisterCall("ScriptGlue::Physics2D_GetGravity")]
+	static void Physics2D_GetGravity(ref Vector2 gravity)
+	{
+		Scene scene = ScriptEngine.Context;
+
+		var box2DGravity = Box2D.World.GetGravity(scene.[Friend]_physicsWorld2D);
+		gravity = *(Vector2*)&box2DGravity;
+	}
+
+	[RegisterCall("ScriptGlue::Physics2D_SetGravity")]
+	static void Physics2D_SetGravity(ref Vector2 gravity)
+	{
+		Scene scene = ScriptEngine.Context;
+
+#unwarn
+		Box2D.World.SetGravity(scene.[Friend]_physicsWorld2D, ref *(b2Vec2*)&gravity);
+	}
+
+#endregion Physics2D
+
 	private static void RegisterCall<T>(String name, T method) where T : var
 	{
 		Mono.mono_add_internal_call(scope $"GlitchyEngine.{name}", (void*)method);

GlitchyEngine/src/World/Scene.bf

@@ -46,6 +46,15 @@ namespace GlitchyEngine.World
 
 				cameraComponent.Camera.SetViewportSize(e.Scene._viewportWidth, e.Scene._viewportHeight);
 			});
+
+			/*_onComponentAddedHandlers.Add(typeof(Rigidbody2DComponent), (e, t, c) => {
+				if ()
+
+
+				Rigidbody2DComponent* rigidBodyComponent = (.)c;
+
+				//cameraComponent.Camera.SetViewportSize(e.Scene._viewportWidth, e.Scene._viewportHeight);
+			});*/
 		}
 
 		public ~this()
@@ -155,58 +164,62 @@ namespace GlitchyEngine.World
 		{
 			_physicsWorld2D = Box2D.World.Create(ref _gravity2D);
 
-			for (var entry in _ecsWorld.Enumerate<Rigidbody2DComponent>())
+			for (let (ecsHandle, rigidBody) in _ecsWorld.Enumerate<Rigidbody2DComponent>())
 			{
-				Entity entity = .(entry.Entity, this);
+				Entity entity = .(ecsHandle, this);
 
-				var transform = entity.Transform;
-				var rigidBody = entry.Component;
+				InitializeRigidbody2D(entity, rigidBody);
+			}
+		}
 
-				b2BodyDef def = .();
-				def.type = GetBox2DBodyType(rigidBody.BodyType);
+		private void InitializeRigidbody2D(Entity entity, Rigidbody2DComponent* rigidBody)
+		{
+			var transform = entity.Transform;
 
-				// TODO: breaks with hierarchy
-				def.position = b2Vec2(transform.Position.X, transform.Position.Y);
-				def.angle = transform.RotationEuler.Z;
+			b2BodyDef def = .();
+			def.type = GetBox2DBodyType(rigidBody.BodyType);
 
-				b2Body* body = Box2D.World.CreateBody(_physicsWorld2D, &def);
-				Box2D.Body.SetFixedRotation(body, rigidBody.FixedRotation);
+			// TODO: breaks with hierarchy
+			def.position = b2Vec2(transform.Position.X, transform.Position.Y);
+			def.angle = transform.RotationEuler.Z;
 
-				rigidBody.RuntimeBody = body;
+			b2Body* body = Box2D.World.CreateBody(_physicsWorld2D, &def);
+			Box2D.Body.SetFixedRotation(body, rigidBody.FixedRotation);
 
-				if (entity.TryGetComponent<BoxCollider2DComponent>(let boxCollider))
-				{
-					b2Shape* boxShape = Box2D.Shape.CreatePolygon();
-					Box2D.Shape.PolygonSetAsBox(boxShape, boxCollider.Size.X * transform.Scale.X, boxCollider.Size.Y * transform.Scale.Y);
-					Box2D.Shape.PolygonSetAsBoxWithCenterAngle(boxShape, boxCollider.Size.X * transform.Scale.X, boxCollider.Size.Y * transform.Scale.Y, ref boxCollider.b2Offset, 0.0f);
+			rigidBody.RuntimeBody = body;
 
-					b2FixtureDef fixtureDef = .();
-					fixtureDef.shape = boxShape;
-					fixtureDef.density = boxCollider.Density;
-					fixtureDef.friction = boxCollider.Friction;
-					fixtureDef.restitution = boxCollider.Restitution;
-					fixtureDef.restitutionThreshold = boxCollider.RestitutionThreshold;
+			if (entity.TryGetComponent<BoxCollider2DComponent>(let boxCollider))
+			{
+				b2Shape* boxShape = Box2D.Shape.CreatePolygon();
+				Box2D.Shape.PolygonSetAsBox(boxShape, boxCollider.Size.X * transform.Scale.X, boxCollider.Size.Y * transform.Scale.Y);
+				Box2D.Shape.PolygonSetAsBoxWithCenterAngle(boxShape, boxCollider.Size.X * transform.Scale.X, boxCollider.Size.Y * transform.Scale.Y, ref boxCollider.b2Offset, 0.0f);
 
-					b2Fixture* fixture = Box2D.Body.CreateFixture(body, &fixtureDef);
-					boxCollider.RuntimeFixture = fixture;
-				}
+				b2FixtureDef fixtureDef = .();
+				fixtureDef.shape = boxShape;
+				fixtureDef.density = boxCollider.Density;
+				fixtureDef.friction = boxCollider.Friction;
+				fixtureDef.restitution = boxCollider.Restitution;
+				fixtureDef.restitutionThreshold = boxCollider.RestitutionThreshold;
 
-				if (entity.TryGetComponent<CircleCollider2DComponent>(let circleCollider))
-				{
-					b2Shape* circleShape = Box2D.Shape.CreateCircle();
-					Box2D.Shape.CircleSetPosition(circleShape, ref circleCollider.b2Offset);
-					Box2D.Shape.SetRadius(circleShape, circleCollider.Radius);
+				b2Fixture* fixture = Box2D.Body.CreateFixture(body, &fixtureDef);
+				boxCollider.RuntimeFixture = fixture;
+			}
 
-					b2FixtureDef fixtureDef = .();
-					fixtureDef.shape = circleShape;
-					fixtureDef.density = circleCollider.Density;
-					fixtureDef.friction = circleCollider.Friction;
-					fixtureDef.restitution = circleCollider.Restitution;
-					fixtureDef.restitutionThreshold = circleCollider.RestitutionThreshold;
+			if (entity.TryGetComponent<CircleCollider2DComponent>(let circleCollider))
+			{
+				b2Shape* circleShape = Box2D.Shape.CreateCircle();
+				Box2D.Shape.CircleSetPosition(circleShape, ref circleCollider.b2Offset);
+				Box2D.Shape.SetRadius(circleShape, circleCollider.Radius);
 
-					b2Fixture* fixture = Box2D.Body.CreateFixture(body, &fixtureDef);
-					circleCollider.RuntimeFixture = fixture;
-				}
+				b2FixtureDef fixtureDef = .();
+				fixtureDef.shape = circleShape;
+				fixtureDef.density = circleCollider.Density;
+				fixtureDef.friction = circleCollider.Friction;
+				fixtureDef.restitution = circleCollider.Restitution;
+				fixtureDef.restitutionThreshold = circleCollider.RestitutionThreshold;
+
+				b2Fixture* fixture = Box2D.Body.CreateFixture(body, &fixtureDef);
+				circleCollider.RuntimeFixture = fixture;
 			}
 		}
 

GlitchyEngineHelper/src/Mono/Mono.bf

@@ -58,7 +58,11 @@ static class Mono
 				       int32 res_size);
 
 	[LinkName(.C)]
-	public static extern char8* mono_metadata_string_heap(MonoImage *meta, uint32 table_index);
+	public static extern char8* mono_metadata_string_heap(MonoImage* meta, uint32 table_index);
+	[LinkName(.C)]
+	public static extern uint8* mono_metadata_blob_heap(MonoImage* meta, uint32 index);
+	[LinkName(.C)]
+	public static extern uint32 mono_metadata_decode_blob_size(uint8* xptr, out uint8* newPosition);
 
 	typealias gconstpointer = void*;
 	typealias gpointer = void*;
@@ -129,6 +133,12 @@ static class Mono
 
 	[LinkName(.C)]
 	public static extern MonoType* mono_reflection_type_get_type(MonoReflectionType* reflectionType);
+
+	[LinkName(.C)]
+	public static extern MonoClassField* mono_class_get_fields(MonoClass* klass, gpointer* iter);
+	
+	[LinkName(.C)]
+	public static extern char8* mono_field_get_name(MonoClassField* field);
 }
 
 struct MonoDomain;
@@ -173,6 +183,14 @@ enum SOME_RANDOM_ENUM{
 	MONO_TYPEDEF_SIZE
 }
 
+enum FIELD_TABLE_FLAGS : uint32
+{
+	MONO_FIELD_FLAGS,
+	MONO_FIELD_NAME,
+	MONO_FIELD_SIGNATURE,
+	MONO_FIELD_SIZE
+}
+
 enum MonoMetaTableEnum : int32
 {
 	MONO_TABLE_MODULE,

ScriptCore/Math/Vector2.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Runtime.CompilerServices;
 
 namespace GlitchyEngine.Math;
 
@@ -50,4 +51,67 @@ public struct Vector2
             }
         }
     }
+    
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector2 operator +(in Vector2 a, in Vector2 b) => new(a.X + b.X, a.Y + b.Y);
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector2 operator +(float a, in Vector2 b) => new(a + b.X, a + b.Y);
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector2 operator +(in Vector2 a, float b) => new(a.X + b, a.Y + b);
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector2 operator +(in Vector2 a) => a;
+    
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector2 operator -(in Vector2 a, in Vector2 b) => new(a.X - b.X, a.Y - b.Y);
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector2 operator -(float a, in Vector2 b) => new(a - b.X, a - b.Y);
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector2 operator -(in Vector2 a, float b) => new(a.X - b, a.Y - b);
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector2 operator -(in Vector2 a) => new Vector2(-a.X, -a.Y);
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector2 operator *(in Vector2 a, in Vector2 b) => new(a.X * b.X, a.Y * b.Y);
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector2 operator *(float a, in Vector2 b) => new(a * b.X, a * b.Y);
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector2 operator *(in Vector2 a, float b) => new(a.X * b, a.Y * b);
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector2 operator /(in Vector2 a, in Vector2 b) => new(a.X / b.X, a.Y / b.Y);
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector2 operator /(float a, in Vector2 b) => new(a / b.X, a / b.Y);
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector2 operator /(in Vector2 a, float b) => new(a.X / b, a.Y / b);
+
+    
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static bool operator ==(Vector2 a, Vector2 b)
+    {
+        float diffX = a.X - b.X;
+        float diffY = a.Y - b.Y;
+
+        return diffX * diffX + diffY * diffY < 0.00001f;
+    }
+    
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static bool operator !=(Vector2 a, Vector2 b)
+    {
+        return !(a == b);
+    }
+    
+    public override int GetHashCode()
+    {
+        unchecked
+        {
+            var hashCode = X.GetHashCode();
+            hashCode = (hashCode * 397) ^ Y.GetHashCode();
+            return hashCode;
+        }
+    }
+    
+    public override string ToString()
+    {
+        return $"X:{X}, Y:{Y}";
+    }
 }

ScriptCore/MyTestEntity.cs

@@ -13,48 +13,40 @@ class MyTestEntity : Entity
     void OnCreate()
     {
         Log.Info($"Create! {UUID}");
-
-        //_rigidBody = GetComponent<RigidBody2D>();
-        RemoveComponent<RigidBody2D>();
+        
+        _rigidBody ??= GetComponent<RigidBody2D>() ?? AddComponent<RigidBody2D>();
     }
-
-    ///// <summary>
-    ///// Called after the entity was created completely.
-    ///// </summary>
-    //void OnInstantiate()
-    //{
-    //    Log.Warning($"Instantiated!");
-    //}
-
+    
     /// <summary>
     /// Called every frame.
     /// </summary>
     /// <param name="deltaTime"></param>
     void OnUpdate(float deltaTime)
     {
-        //Vector2 force = Vector2.Zero;
+        Vector2 force = Vector2.Zero;
 
-        //if (Input.IsKeyPressed(Key.A))
-        //{
-        //    force.X -= 1000 * deltaTime;
-        //}
-
-        //if (Input.IsKeyPressed(Key.D))
-        //{
-        //    force.X += 1000 * deltaTime;
-        //}
-
-        //if (Input.IsKeyPressing(Key.Space))
-        //{
-        //    force.Y += 2000;
-        //}
-
-        //_rigidBody.ApplyForceToCenter(force);
-
-        if (Input.IsMouseButtonReleasing(MouseButton.LeftButton))
+        if (Input.IsKeyPressed(Key.A))
         {
-            Log.Info("Ouha!");
+            force.X -= 1000 * deltaTime;
         }
+
+        if (Input.IsKeyPressed(Key.D))
+        {
+            force.X += 1000 * deltaTime;
+        }
+
+        if (Input.IsKeyPressing(Key.Space))
+        {
+            force.Y += 2000;
+        }
+
+        _rigidBody.ApplyForceToCenter(force);
+
+        //if (Input.IsMouseButtonReleasing(MouseButton.MiddleButton))
+        //{
+        //    Log.Info("Ouha!");
+        //    Physics2D.Gravity *= new Vector2(1, -1);
+        //}
     }
 
     /// <summary>

ScriptCore/Physics2D.cs

@@ -0,0 +1,22 @@
+using GlitchyEngine.Math;
+
+namespace GlitchyEngine;
+
+/// <summary>
+/// Allows changing the properties of the 2D physics simulation in the current scene.
+/// </summary>
+public static class Physics2D
+{
+    /// <summary>
+    /// Gets or sets the gravity of the current scene.
+    /// </summary>
+    public static Vector2 Gravity
+    {
+        get
+        {
+            ScriptGlue.Physics2D_GetGravity(out Vector2 gravity);
+            return gravity;
+        }
+        set => ScriptGlue.Physics2D_SetGravity(in value);
+    }
+}

ScriptCore/ScriptCore.csproj

@@ -57,6 +57,7 @@
     <Compile Include="Math\Vector3.cs" />
     <Compile Include="MouseButton.cs" />
     <Compile Include="MyTestEntity.cs" />
+    <Compile Include="Physics2D.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="ScriptGlue.cs" />
   </ItemGroup>

ScriptCore/ScriptGlue.cs

@@ -43,4 +43,14 @@ internal static class ScriptGlue
 
 #endregion RigidBody2D
 
+#region Physics2D
+    
+    [MethodImpl(MethodImplOptions.InternalCall)]
+    internal static extern void Physics2D_GetGravity(out Vector2 gravity);
+
+    [MethodImpl(MethodImplOptions.InternalCall)]
+    internal static extern void Physics2D_SetGravity(in Vector2 gravity);
+
+#endregion Physics2D
+
 }