Separated window for game and editor

GlitchyEditor/src/EditWindows/GameViewportWindow.bf

@@ -0,0 +1,106 @@
+using System;
+using ImGui;
+using GlitchyEngine.Renderer;
+using GlitchyEngine.Math;
+using GlitchyEngine;
+using GlitchyEngine.World;
+using ImGuizmo;
+using GlitchyEngine.Events;
+
+namespace GlitchyEditor.EditWindows
+{
+	class GameViewportWindow : EditorWindow
+	{
+		public const String s_WindowTitle = "Game";
+
+		private ImGui.Vec2 _oldViewportSize = .(100, 100);
+		private bool _viewPortChanged;
+
+		private bool _visible;
+
+		private RenderTargetGroup _renderTarget ~ _?.ReleaseRef();
+
+		public Vector2 ViewportSize => (Vector2)_oldViewportSize;
+		// Occurs when the viewport is resized.
+		public Event<EventHandler<Vector2>> ViewportSizeChanged ~ _.Dispose();
+		// Occurs when an entity was clicked.
+		public Event<EventHandler<uint32>> EntityClicked ~ _.Dispose();
+
+		/// The render target that is shown in the viewport window.
+		public RenderTargetGroup RenderTarget
+		{
+			get => _renderTarget;
+			set
+			{
+				if(_renderTarget == value)
+					return;
+
+				SetReference!(_renderTarget, value);
+			}
+		}
+
+		public bool Visible => _visible;
+
+		public this(Editor editor)
+		{
+			_editor = editor;
+		}
+
+		protected override void InternalShow()
+		{
+			ImGui.PushStyleVar(.WindowPadding, ImGui.Vec2(1, 1));
+			defer ImGui.PopStyleVar();
+
+			if(!ImGui.Begin(s_WindowTitle, &_open, .NoScrollbar | .MenuBar))
+			{
+				ImGui.End();
+
+				_visible = false;
+				return;
+			}
+
+			_visible = true;
+
+			let viewportSize = ImGui.GetContentRegionAvail();
+
+			if(ImGui.IsWindowHovered() && Input.IsMouseButtonPressing(.RightButton))
+			{
+				let currentWindow = ImGui.GetCurrentWindow();
+				ImGui.FocusWindow(currentWindow);
+			}
+
+			_hasFocus = ImGui.IsWindowFocused();
+			
+			if(_renderTarget != null)
+			{
+				ImGui.Image(_renderTarget.GetViewBinding(0), viewportSize);
+			}
+
+			ImGui.End();
+
+			if(_oldViewportSize != viewportSize)
+			{
+				ViewportSizeChanged.Invoke(this, (Vector2)viewportSize);
+				_viewPortChanged = true;
+				_oldViewportSize = viewportSize;
+			}
+		}
+
+		/// Provides the ImGui Drop target and handles dropped payload.
+		private void HandleDropTarget()
+		{
+			if (ImGui.BeginDragDropTarget())
+			{
+				ImGui.Payload* payload = ImGui.AcceptDragDropPayload("CONTENT_BROWSER_ITEM");
+
+				if (payload != null)
+				{
+					StringView path = .((char8*)payload.Data, (int)payload.DataSize);
+					_editor.RequestOpenScene(this, path);
+				}
+
+				ImGui.EndDragDropTarget();
+			}
+		}
+	}
+}

GlitchyEditor/src/EditWindows/SceneViewportWindow.bf

@@ -27,6 +27,8 @@ namespace GlitchyEditor.EditWindows
 		private float _angleSnap = 45.0f;
 		private bool _doSnap = false;
 
+		private bool _visible;
+
 		public uint32 SelectedEntityId {get; private set; }
 		public bool SelectionChanged { get; private set; }
 
@@ -52,6 +54,8 @@ namespace GlitchyEditor.EditWindows
 		/// Gets or sets whether the editor functionality (gizmo, picking etc.) is enabled.
 		public bool EditorMode { get; set; } = true
 
+		public bool Visible => _visible;
+
 		public this(Editor editor)
 		{
 			_editor = editor;
@@ -65,9 +69,13 @@ namespace GlitchyEditor.EditWindows
 			if(!ImGui.Begin(s_WindowTitle, &_open, .NoScrollbar | .MenuBar))
 			{
 				ImGui.End();
+				
+				_visible = false;
 				return;
 			}
 
+			_visible = true;
+
 			let viewportSize = ImGui.GetContentRegionAvail();
 
 			if(ImGui.IsWindowHovered() && Input.IsMouseButtonPressing(.RightButton))
@@ -78,30 +86,27 @@ namespace GlitchyEditor.EditWindows
 
 			_hasFocus = ImGui.IsWindowFocused();
 			
-			if (EditorMode)
+			ShowMenuBar();
+			
+			if (_editor.CurrentCamera.[Friend]BindMouse && _hasFocus)
+				WrapMouseInViewport();
+
+			// If we wrapped this frame we weren't hovering because the cursor has to be be out of bounds to wrap
+			_editor.CurrentCamera.AllowMove = _hasFocus && (ImGui.IsWindowHovered() || _wrappedCursor);
+
+			if (_hasFocus && !_editor.CurrentCamera.InUse)
 			{
-				ShowMenuBar();
+				if (Input.IsKeyPressing(.Q))
+					_gizmoType = .TRANSLATE;
+				if (Input.IsKeyPressing(.W))
+					_gizmoType = .ROTATE;
+				if (Input.IsKeyPressing(.E))
+					_gizmoType = .SCALE;
 
-				if (_editor.CurrentCamera.[Friend]BindMouse && _hasFocus)
+				if (Input.IsKeyPressing(.G))
-					WrapMouseInViewport();
+					_gizmoMode = .WORLD;
-
+				if (Input.IsKeyPressing(.L))
-				// If we wrapped this frame we weren't hovering because the cursor has to be be out of bounds to wrap
+					_gizmoMode = .LOCAL;
-				_editor.CurrentCamera.AllowMove = _hasFocus && (ImGui.IsWindowHovered() || _wrappedCursor);
-
-				if (_hasFocus && !_editor.CurrentCamera.InUse)
-				{
-					if (Input.IsKeyPressing(.Q))
-						_gizmoType = .TRANSLATE;
-					if (Input.IsKeyPressing(.W))
-						_gizmoType = .ROTATE;
-					if (Input.IsKeyPressing(.E))
-						_gizmoType = .SCALE;
-
-					if (Input.IsKeyPressing(.G))
-						_gizmoMode = .WORLD;
-					if (Input.IsKeyPressing(.L))
-						_gizmoMode = .LOCAL;
-				}
 			}
 			
 			if(_renderTarget != null)
@@ -111,14 +116,11 @@ namespace GlitchyEditor.EditWindows
 				//ImGui.Image(_editor.CurrentScene.[Friend]_compositeTarget.GetViewBinding(0), viewportSize);
 			}
 
-			if (EditorMode)
+			HandleDropTarget();
-			{
-				HandleDropTarget();
 
-				bool gizmoUsed = DrawImGuizmo(viewportSize);
+			bool gizmoUsed = DrawImGuizmo(viewportSize);
 
-				MousePicking(viewportSize, gizmoUsed);
+			MousePicking(viewportSize, gizmoUsed);
-			}
 	
 			ImGui.End();
 
@@ -157,24 +159,26 @@ namespace GlitchyEditor.EditWindows
 			let regionMin = winPos + (Vector2)ImGui.GetWindowContentRegionMin();
 			let regionMax = winPos + (Vector2)ImGui.GetWindowContentRegionMax();
 
+			ImGui.DrawRect((.)regionMin, (.)regionMax, .(0, 255, 0));
+
 			Vector2 newMousePos = mousePos;
 
-			if (mousePos.X < regionMin.X)
+			if (mousePos.X < regionMin.X + 1)
 			{
-				newMousePos.X = regionMax.X - 1;
+				newMousePos.X = regionMax.X - 2;
 			}
 			else if (mousePos.X > regionMax.X - 1)
 			{
-				newMousePos.X = regionMin.X + 1;
+				newMousePos.X = regionMin.X + 2;
 			}
 			
-			if (mousePos.Y < regionMin.Y)
+			if (mousePos.Y < regionMin.Y + 1)
 			{
-				newMousePos.Y = regionMax.Y - 1;
+				newMousePos.Y = regionMax.Y - 100;
 			}
 			else if (mousePos.Y > regionMax.Y - 1)
 			{
-				newMousePos.Y = regionMin.Y + 1;
+				newMousePos.Y = regionMin.Y + 10;
 			}
 
 			if (newMousePos != mousePos)
@@ -193,8 +197,8 @@ namespace GlitchyEditor.EditWindows
 		{
 			Vector2 relativeMouse = (Vector2)ImGui.GetMousePos() - (Vector2)ImGui.GetItemRectMin();
 
-			int rtWidth = _editor.CurrentScene.[Friend]_compositeTarget.Width;
+			int rtWidth = _editor.EditorSceneRenderer.CompositeTarget.Width;
-			int rtHeight = _editor.CurrentScene.[Friend]_compositeTarget.Height;
+			int rtHeight = _editor.EditorSceneRenderer.CompositeTarget.Height;
 
 			if (Input.IsMouseButtonPressing(.LeftButton) &&
 				ImGui.IsWindowHovered() && !gizmoUsed && !_editor.CurrentCamera.InUse && 
@@ -204,7 +208,7 @@ namespace GlitchyEditor.EditWindows
 			{
 				uint32 id = uint32.MaxValue;
 
-				_editor.CurrentScene.[Friend]_compositeTarget.GetData<uint32>(&id, 1, (.)relativeMouse.X, (.)relativeMouse.Y, 1, 1);
+				_editor.EditorSceneRenderer.CompositeTarget.GetData<uint32>(&id, 1, (.)relativeMouse.X, (.)relativeMouse.Y, 1, 1);
 
 				SelectionChanged = true;
 				SelectedEntityId = id;

GlitchyEditor/src/Editor.bf

@@ -17,7 +17,8 @@ namespace GlitchyEditor
 
 		private EntityHierarchyWindow _entityHierarchyWindow ~ delete _;
 		private ComponentEditWindow _componentEditWindow ~ delete _;
-		private SceneViewportWindow _sceneViewportWindow~ delete _;
+		private SceneViewportWindow _sceneViewportWindow ~ delete _;
+		private GameViewportWindow _gameViewportWindow ~ delete _;
 		private ContentBrowserWindow _contentBrowserWindow ~ delete _;
 		private PropertiesWindow _propertiesWindow ~ delete _;
 
@@ -39,6 +40,7 @@ namespace GlitchyEditor
 		public EntityHierarchyWindow EntityHierarchyWindow => _entityHierarchyWindow;
 		public ComponentEditWindow ComponentEditWindow => _componentEditWindow;
 		public SceneViewportWindow SceneViewportWindow => _sceneViewportWindow;
+		public GameViewportWindow GameViewportWindow => _gameViewportWindow;
 		public ContentBrowserWindow ContentBrowserWindow => _contentBrowserWindow;
 		public PropertiesWindow PropertiesWindow => _propertiesWindow;
 
@@ -46,6 +48,9 @@ namespace GlitchyEditor
 
 		public Event<EventHandler<StringView>> RequestOpenScene ~ _.Dispose();
 
+		public SceneRenderer GameSceneRenderer {get; set;}
+		public SceneRenderer EditorSceneRenderer {get; set;}
+
 		/// Creates a new editor for the given world
 		public this(Scene scene, EditorContentManager contentManager)
 		{
@@ -58,6 +63,7 @@ namespace GlitchyEditor
 		private void InitWindows()
 		{
 			_sceneViewportWindow = new SceneViewportWindow(this);
+			_gameViewportWindow = new GameViewportWindow(this);
 			_entityHierarchyWindow = new EntityHierarchyWindow(this, _scene);
 			_componentEditWindow = new ComponentEditWindow(_entityHierarchyWindow);
 			_contentBrowserWindow = new ContentBrowserWindow((.)Application.Get().ContentManager);
@@ -67,6 +73,7 @@ namespace GlitchyEditor
 		public void Update()
 		{
 			_sceneViewportWindow.Show();
+			_gameViewportWindow.Show();
 			_entityHierarchyWindow.Show();
 			_componentEditWindow.Show();
 			_contentBrowserWindow.Show();

GlitchyEditor/src/EditorLayer.bf

@@ -30,6 +30,9 @@ namespace GlitchyEditor
 		Scene _activeScene ~ _?.ReleaseRef();
 		Scene _editorScene ~ _?.ReleaseRef();
 
+		SceneRenderer _gameSceneRenderer ~ delete _;
+		SceneRenderer _editorSceneRenderer ~ delete _;
+
 		String _sceneFilePath = new String() ~ delete _;
 
 		public String SceneFilePath
@@ -47,7 +50,8 @@ namespace GlitchyEditor
 		Editor _editor ~ delete _;
 
 		RenderTargetGroup _cameraTarget ~ _.ReleaseRef();
-		RenderTargetGroup _viewportTarget ~ _.ReleaseRef();
+		RenderTargetGroup _editorViewportTarget ~ _.ReleaseRef();
+		RenderTargetGroup _gameViewportTarget ~ _.ReleaseRef();
 
 		SettingsWindow _settingsWindow = new .() ~ delete _;
 
@@ -83,6 +87,9 @@ namespace GlitchyEditor
 			_editorScene = new Scene();
 			SetReference!(_activeScene, _editorScene);
 
+			_gameSceneRenderer = new SceneRenderer();
+			_editorSceneRenderer = new SceneRenderer();
+
 			_camera = EditorCamera(Vector3(3.5f, 1.25f, 2.75f), Quaternion.FromEulerAngles(MathHelper.ToRadians(40), MathHelper.ToRadians(25), 0), MathHelper.ToRadians(75), 0.1f, 1);
 			_camera.RenderTarget = _cameraTarget;
 			
@@ -144,7 +151,15 @@ namespace GlitchyEditor
 					DepthTargetDescription = .(.D24_UNorm_S8_UInt)
 				});
 
-			_viewportTarget = new RenderTargetGroup(.()
+			_editorViewportTarget = new RenderTargetGroup(.()
+				{
+					Width = 100,
+					Height = 100,
+					ColorTargetDescriptions = TargetDescription[](
+						.(.R8G8B8A8_UNorm))
+				});
+
+			_gameViewportTarget = new RenderTargetGroup(.()
 				{
 					Width = 100,
 					Height = 100,
@@ -167,8 +182,11 @@ namespace GlitchyEditor
 		private void InitEditor()
 		{
 			_editor = new Editor(_editorScene, _contentManager);
-			_editor.SceneViewportWindow.ViewportSizeChanged.Add(new (s, e) => ViewportSizeChanged(s, e));
+			_editor.SceneViewportWindow.ViewportSizeChanged.Add(new (s, e) => EditorViewportSizeChanged(s, e));
+			_editor.GameViewportWindow.ViewportSizeChanged.Add(new (s, e) => GameViewportSizeChanged(s, e));
 			_editor.CurrentCamera = &_camera;
+			_editor.GameSceneRenderer = _gameSceneRenderer;
+			_editor.EditorSceneRenderer = _editorSceneRenderer;
 
 			_editor.RequestOpenScene.Add(new (s, fileName) => {
 			  LoadSceneFile(fileName);
@@ -177,22 +195,38 @@ namespace GlitchyEditor
 		
 		public override void Update(GameTime gameTime)
 		{
+			Debug.Profiler.ProfileFunction!();
+
 			_camera.Update(gameTime);
 
 			_editor.CurrentScene = _activeScene;
 			
+			_activeScene.Update(gameTime, (_sceneState == .Edit) ? .Editor : .Runtime);
+
 			// Clear the swapchain-buffer
 			RenderCommand.Clear(null, .Color | .Depth, .(0.2f, 0.2f, 0.2f), 1.0f, 0);
 			
-			RenderCommand.Clear(_viewportTarget, .Color | .Depth, .(0.2f, 0.2f, 0.2f), 1.0f, 0);
-
 			RenderCommand.SetBlendState(_alphaBlendState);
 			RenderCommand.SetDepthStencilState(_depthStencilState);
 			
-			if (_sceneState == .Edit)
+			if (_editor.SceneViewportWindow.Visible)
-				_activeScene.UpdateEditor(gameTime, _camera, _viewportTarget, scope => DebugDraw3D, scope => DebugDraw2D);
+			{
-			else if (_sceneState == .Play)
+				_editorSceneRenderer.Scene = _activeScene;
-				_activeScene.UpdateRuntime(gameTime, _viewportTarget);
+
+				RenderCommand.Clear(_editorViewportTarget, .Color | .Depth, .(0.2f, 0.2f, 0.2f), 1.0f, 0);
+				_editorSceneRenderer.RenderEditor(gameTime, _camera, _editorViewportTarget, scope => DebugDraw3D, scope => DebugDraw2D);
+			}
+
+			RenderCommand.SetBlendState(_alphaBlendState);
+			RenderCommand.SetDepthStencilState(_depthStencilState);
+
+			if (_editor.GameViewportWindow.Visible)
+			{
+				_gameSceneRenderer.Scene = _activeScene;
+
+				RenderCommand.Clear(_gameViewportTarget, .Color | .Depth, .(0.2f, 0.2f, 0.2f), 1.0f, 0);
+				_gameSceneRenderer.RenderRuntime(gameTime, _gameViewportTarget);
+			}
 
 			RenderCommand.UnbindRenderTargets();
 			RenderCommand.SetRenderTarget(null, 0, true);
@@ -301,7 +335,8 @@ namespace GlitchyEditor
 
 			DrawMainMenuBar();
 
-			_editor.SceneViewportWindow.RenderTarget = _viewportTarget;
+			_editor.SceneViewportWindow.RenderTarget = _editorViewportTarget;
+			_editor.GameViewportWindow.RenderTarget = _gameViewportTarget;
 
 			_editor.Update();
 
@@ -381,6 +416,13 @@ namespace GlitchyEditor
 			_sceneState = .Edit;
 
 			_editor.CurrentScene = _activeScene;
+
+			/*
+			 * Update the viewport size because if the game windows size changed in
+			 * "Game"-mode the updated aspect-rations will reset once we go back
+			 * into "Editor"-mode (because Game-Mode works on a copy of the scene).
+			 */
+			GameViewportSizeChanged(null, _editor.GameViewportWindow.ViewportSize);
 		}
 
 		// Just for testing
@@ -671,7 +713,7 @@ namespace GlitchyEditor
 			return false;
 		}
 
-		private void ViewportSizeChanged(Object sender, Vector2 viewportSize)
+		private void EditorViewportSizeChanged(Object sender, Vector2 viewportSize)
 		{
 			uint32 sizeX = (uint32)viewportSize.X;
 			uint32 sizeY = (uint32)viewportSize.Y;
@@ -679,11 +721,28 @@ namespace GlitchyEditor
 			if(sizeX == 0 || sizeY == 0)
 				return;
 
-			_viewportTarget.Resize(sizeX, sizeY);
+			_editorViewportTarget.Resize(sizeX, sizeY);
 			_cameraTarget.Resize(sizeX, sizeY);
 
-			_activeScene.OnViewportResize(sizeX, sizeY);
+			//_activeScene.OnViewportResize(sizeX, sizeY);
 			_camera.OnViewportResize(sizeX, sizeY);
+
+			_editorSceneRenderer.OnViewportResize(sizeX, sizeY);
+		}
+		
+		private void GameViewportSizeChanged(Object sender, Vector2 viewportSize)
+		{
+			uint32 sizeX = (uint32)viewportSize.X;
+			uint32 sizeY = (uint32)viewportSize.Y;
+
+			if(sizeX == 0 || sizeY == 0)
+				return;
+
+			_gameViewportTarget.Resize(sizeX, sizeY);
+
+			_activeScene.OnViewportResize(sizeX, sizeY);
+
+			_gameSceneRenderer.OnViewportResize(sizeX, sizeY);
 		}
 
 		private bool OnKeyPressed(KeyPressedEvent e)

GlitchyEngine/src/World/Scene.bf

@@ -19,13 +19,6 @@ namespace GlitchyEngine.World
 
 		private Dictionary<Type, function void(Entity entity, Type componentType, void* component)> _onComponentAddedHandlers = new .() ~ delete _;
 
-		private RenderTargetGroup _compositeTarget ~ _.ReleaseRef();
-
-		// Temporary target for camera. Needs to change as soon as we support multiple cameras
-		private RenderTargetGroup _cameraTarget ~ _.ReleaseRef();
-
-		private AssetHandle _gammaCorrectEffect;
-
 		private uint32 _viewportWidth, _viewportHeight;
 
 		// Maps ids to the entities they represent.
@@ -52,25 +45,6 @@ namespace GlitchyEngine.World
 
 				cameraComponent.Camera.SetViewportSize(e.Scene._viewportWidth, e.Scene._viewportHeight);
 			});
-
-			RenderTargetGroupDescription desc = .(100, 100,
-				TargetDescription[](
-				RenderTargetFormat.R16G16B16A16_Float,
-				.(RenderTargetFormat.R32_UInt) {ClearColor = .UInt(uint32.MaxValue)}),
-				RenderTargetFormat.D24_UNorm_S8_UInt);
-			_compositeTarget = new RenderTargetGroup(desc);
-
-			_cameraTarget = new RenderTargetGroup(.(){
-					Width = 100,
-					Height = 100,
-					ColorTargetDescriptions = TargetDescription[](
-						.(.R16G16B16A16_Float),
-						.(.R32_UInt)
-					),
-					DepthTargetDescription = .(.D24_UNorm_S8_UInt)
-				});
-
-			_gammaCorrectEffect = Content.LoadAsset("Shaders/GammaCorrect.hlsl");//Application.Get().EffectLibrary.Load("content/Shaders/GammaCorrect.hlsl");
 		}
 
 		public ~this()
@@ -215,207 +189,62 @@ namespace GlitchyEngine.World
 			_physicsWorld2D = null;
 		}
 
-		public void UpdateRuntime(GameTime gameTime, RenderTargetGroup finalTarget)
+		public enum UpdateMode
 		{
-			Debug.Profiler.ProfileRendererFunction!();
+			Editor = 0x01,
-
+			Physics = 0x02,
-			finalTarget.AddRef();
+			Runtime = 0x04 | Physics,
-			
-			TransformSystem.Update(_ecsWorld);
-
-			// Run scripts
-			for (var (entity, script) in _ecsWorld.Enumerate<NativeScriptComponent>())
-			{
-				if (script.Instance == null)
-				{
-					script.Instance = script.InstantiateFunction();
-					script.Instance._entity = Entity(entity, this);
-					script.Instance.[Friend]OnCreate();
-				}
-
-				script.Instance.[Friend]OnUpdate(gameTime);
-			}
-
-			// Update 2D physics
-			{
-				const int32 velocityIterations = 6;
-				const int32 positionIterations = 2;
-				const int32 particleIterations = 2;
-
-				Box2D.World.Step(_physicsWorld2D, gameTime.DeltaTime, velocityIterations, positionIterations, particleIterations);
-
-				// Retrieve transform from Box2D
-				for (var entry in _ecsWorld.Enumerate<Rigidbody2DComponent>())
-				{
-					Entity entity = .(entry.Entity, this);
-	
-					var transform = entity.Transform;
-					var rigidbody = entry.Component;
-
-					b2Body* body = rigidbody.RuntimeBody;
-					b2Vec2 position = Box2D.Body.GetPosition(body);
-					float angle = Box2D.Body.GetAngle(body);
-
-					transform.Position = .(position.x, position.y, transform.Position.Z);
-					transform.RotationEuler = .(transform.RotationEuler.XY, angle);
-				}
-			}
-
-			// Find camera
-			Camera* primaryCamera = null;
-			Matrix primaryCameraTransform = default;
-			RenderTargetGroup renderTarget = null;
-
-			for (var (entity, transform, camera) in _ecsWorld.Enumerate<TransformComponent, CameraComponent>())
-			{
-				if (camera.Primary)// && camera.RenderTarget != null)
-				{
-					primaryCamera = &camera.Camera;
-					primaryCameraTransform = transform.WorldTransform;
-					// TODO: bind render targets to cameras
-					// renderTarget = camera.RenderTarget..AddRef();
-				}
-			}
-
-			renderTarget = _cameraTarget..AddRef();
-
-			// 3D render
-			Renderer.BeginScene(*primaryCamera, primaryCameraTransform, renderTarget, _compositeTarget);
-
-			for (var (entity, transform, mesh, meshRenderer) in _ecsWorld.Enumerate<TransformComponent, MeshComponent, MeshRendererComponent>())
-			{
-				Renderer.Submit(mesh.Mesh, meshRenderer.Material, entity, transform.WorldTransform);
-			}
-
-			for (var (entity, transform, light) in _ecsWorld.Enumerate<TransformComponent, LightComponent>())
-			{
-				Renderer.Submit(light.SceneLight, transform.WorldTransform);
-			}
-
-			Renderer.EndScene();
-
-			renderTarget.ReleaseRef();
-
-			// TODO: alphablending (handle in Renderer2D)
-			// TODO: 2D-Postprocessing requires rendering into separate target instead of directly into compositeTarget
-
-			RenderCommand.SetRenderTargetGroup(_compositeTarget);
-			RenderCommand.BindRenderTargets();
-
-			// Sprite renderer
-			Renderer2D.BeginScene(*primaryCamera, primaryCameraTransform, .BackToFront);
-
-			for (var (entity, transform, sprite) in _ecsWorld.Enumerate<TransformComponent, SpriteRendererComponent>())
-			{
-				Renderer2D.DrawSprite(transform.WorldTransform, sprite, entity.Index);
-			}
-
-			for (var (entity, transform, circle) in _ecsWorld.Enumerate<TransformComponent, CircleRendererComponent>())
-			{
-				Renderer2D.DrawCircle(transform.WorldTransform, circle, entity.Index);
-			}
-
-			Renderer2D.EndScene();
-
-			// Gamma correct composit target and draw it into viewport
-			{
-				RenderCommand.UnbindRenderTargets();
-				RenderCommand.SetRenderTargetGroup(finalTarget, false);
-				RenderCommand.BindRenderTargets();
-
-				Effect gammaEffect = Content.GetAsset<Effect>(_gammaCorrectEffect);
-
-				gammaEffect.SetTexture("Texture", _compositeTarget, 0);
-				// TODO: iiihhh
-				gammaEffect.ApplyChanges();
-				gammaEffect.Bind();
-	
-				FullscreenQuad.Draw();
-			}
-
-			finalTarget.ReleaseRef();
 		}
 
-		public void UpdateEditor(GameTime gameTime, EditorCamera camera, RenderTargetGroup viewportTarget, delegate void() DebugDraw3D, delegate void() DrawDebug2D)
+		public void Update(GameTime gameTime, UpdateMode mode)
 		{
 			Debug.Profiler.ProfileRendererFunction!();
 
-			viewportTarget.AddRef();
-
 			TransformSystem.Update(_ecsWorld);
 
-			// 3D render
+			if (mode.HasFlag(.Runtime))
-			Renderer.BeginScene(camera, _compositeTarget);
-
-			for (var (entity, transform, mesh, meshRenderer) in _ecsWorld.Enumerate<TransformComponent, MeshComponent, MeshRendererComponent>())
 			{
-				if (mesh.Mesh == .Invalid || meshRenderer.Material == .Invalid)
+				// Run scripts
-					continue;
+				for (var (entity, script) in _ecsWorld.Enumerate<NativeScriptComponent>())
+				{
+					if (script.Instance == null)
+					{
+						script.Instance = script.InstantiateFunction();
+						script.Instance._entity = Entity(entity, this);
+						script.Instance.[Friend]OnCreate();
+					}
 	
-				Renderer.Submit(mesh.Mesh, meshRenderer.Material, entity, transform.WorldTransform);
+					script.Instance.[Friend]OnUpdate(gameTime);
+				}
 			}
 			
-			for (var (entity, transform, light) in _ecsWorld.Enumerate<TransformComponent, LightComponent>())
+			if (mode.HasFlag(.Physics))
 			{
-				Renderer.Submit(light.SceneLight, transform.WorldTransform);
+				// Update 2D physics
+				{
+					const int32 velocityIterations = 6;
+					const int32 positionIterations = 2;
+					const int32 particleIterations = 2;
+
+					Box2D.World.Step(_physicsWorld2D, gameTime.DeltaTime, velocityIterations, positionIterations, particleIterations);
+
+					// Retrieve transform from Box2D
+					for (var entry in _ecsWorld.Enumerate<Rigidbody2DComponent>())
+					{
+						Entity entity = .(entry.Entity, this);
+
+						var transform = entity.Transform;
+						var rigidbody = entry.Component;
+
+						b2Body* body = rigidbody.RuntimeBody;
+						b2Vec2 position = Box2D.Body.GetPosition(body);
+						float angle = Box2D.Body.GetAngle(body);
+
+						transform.Position = .(position.x, position.y, transform.Position.Z);
+						transform.RotationEuler = .(transform.RotationEuler.XY, angle);
+					}
+				}
 			}
-
-			DebugDraw3D();
-
-			Renderer.EndScene();
-
-			// TODO: alphablending (handle in Renderer2D)
-			// TODO: 2D-Postprocessing requires rendering into separate target instead of directly into compositeTarget
-
-			RenderCommand.SetRenderTargetGroup(_compositeTarget);
-			RenderCommand.BindRenderTargets();
-
-			// Sprite renderer
-			Renderer2D.BeginScene(camera, .BackToFront);
-
-			for (var (entity, transform, sprite) in _ecsWorld.Enumerate<TransformComponent, SpriteRendererComponent>())
-			{
-				Renderer2D.DrawSprite(transform.WorldTransform, sprite, entity.Index);
-			}
-
-			for (var (entity, transform, circle) in _ecsWorld.Enumerate<TransformComponent, CircleRendererComponent>())
-			{
-				Renderer2D.DrawCircle(transform.WorldTransform, circle, entity.Index);
-			}
-
-			Renderer2D.DrawLine(Vector3.Zero, Vector3.Up, .Red);
-			Renderer2D.DrawLine(Vector3.Zero, Vector3(0, 0, 1), .Green);
-			Renderer2D.DrawRay(Vector3.Zero, Vector3(1, 0, 0), .Blue);
-
-			Renderer2D.DrawRect(Vector2(2.0f, 1.0f), Vector2(1.0f, 2.0f), .Yellow);
-
-			Renderer2D.DrawRect(Matrix.Translation(2, 2, 1) * Matrix.RotationZ(MathHelper.PiOverFour), .Purple);
-
-			Renderer2D.EndScene();
-
-			Renderer2D.BeginScene(camera, .BackToFront);
-
-			DrawDebug2D();
-
-			Renderer2D.EndScene();
-
-			// Gamma correct composit target and draw it into viewport
-			{
-				RenderCommand.UnbindRenderTargets();
-				RenderCommand.SetRenderTargetGroup(viewportTarget, false);
-				RenderCommand.BindRenderTargets();
-				
-				Effect gammaEffect = Content.GetAsset<Effect>(_gammaCorrectEffect);
-
-				gammaEffect.SetTexture("Texture", _compositeTarget, 0);
-				// TODO: iiihhh
-				gammaEffect.ApplyChanges();
-				gammaEffect.Bind();
-	
-				FullscreenQuad.Draw();
-			}
-
-			viewportTarget.ReleaseRef();
 		}
 
 		/// Creates a new Entity with the given name.
@@ -479,9 +308,6 @@ namespace GlitchyEngine.World
 					cameraComponent.Camera.SetViewportSize(width, height);
 				}
 			}
-
-			_compositeTarget.Resize(_viewportWidth, _viewportHeight);
-			_cameraTarget.Resize(_viewportWidth, _viewportHeight);
 		}
 
 		private void OnComponentAdded(Entity entity, Type componentType, void* component)

GlitchyEngine/src/World/SceneRenderer.bf

@@ -0,0 +1,220 @@
+using GlitchyEngine.Renderer;
+using GlitchyEngine.Content;
+using GlitchyEngine.Math;
+
+namespace GlitchyEngine.World;
+
+using internal GlitchyEngine.World;
+
+class SceneRenderer
+{
+	public Scene Scene { get; set; }
+
+	private RenderTargetGroup _compositeTarget ~ _.ReleaseRef();
+	
+	// Temporary target for camera. Needs to change as soon as we support multiple cameras
+	private RenderTargetGroup _cameraTarget ~ _.ReleaseRef();
+
+	private uint32 _viewportWidth;
+	private uint32 _viewportHeight;
+
+	private AssetHandle _gammaCorrectEffect;
+
+	public RenderTargetGroup CompositeTarget => _compositeTarget;
+
+	public this()
+	{
+		RenderTargetGroupDescription desc = .(100, 100,
+			TargetDescription[](
+			RenderTargetFormat.R16G16B16A16_Float,
+			.(RenderTargetFormat.R32_UInt) {ClearColor = .UInt(uint32.MaxValue)}),
+			RenderTargetFormat.D24_UNorm_S8_UInt);
+		_compositeTarget = new RenderTargetGroup(desc);
+
+		_cameraTarget = new RenderTargetGroup(.(){
+				Width = 100,
+				Height = 100,
+				ColorTargetDescriptions = TargetDescription[](
+					.(.R16G16B16A16_Float),
+					.(.R32_UInt)
+				),
+				DepthTargetDescription = .(.D24_UNorm_S8_UInt)
+			});
+
+		_gammaCorrectEffect = Content.LoadAsset("Shaders/GammaCorrect.hlsl");//Application.Get().EffectLibrary.Load("content/Shaders/GammaCorrect.hlsl");
+	}
+
+	/// Sets the size of the viewport into which the scene will be rendered.
+	public void OnViewportResize(uint32 width, uint32 height)
+	{
+		_viewportWidth = width;
+		_viewportHeight = height;
+
+		_compositeTarget.Resize(_viewportWidth, _viewportHeight);
+		_cameraTarget.Resize(_viewportWidth, _viewportHeight);
+	}
+
+	public void RenderRuntime(GameTime gameTime, RenderTargetGroup finalTarget)
+	{
+		Debug.Profiler.ProfileRendererFunction!();
+
+		// Find camera
+		Camera* primaryCamera = null;
+		Matrix primaryCameraTransform = default;
+		RenderTargetGroup renderTarget = null;
+
+		for (var (entity, transform, camera) in Scene._ecsWorld.Enumerate<TransformComponent, CameraComponent>())
+		{
+			if (camera.Primary)// && camera.RenderTarget != null)
+			{
+				primaryCamera = &camera.Camera;
+				primaryCameraTransform = transform.WorldTransform;
+				// TODO: bind render targets to cameras
+				// renderTarget = camera.RenderTarget..AddRef();
+			}
+		}
+
+		if (primaryCamera == null)
+			return;
+
+		finalTarget.AddRef();
+		
+		renderTarget = _cameraTarget..AddRef();
+
+		// 3D render
+		Renderer.BeginScene(*primaryCamera, primaryCameraTransform, renderTarget, _compositeTarget);
+
+		for (var (entity, transform, mesh, meshRenderer) in Scene._ecsWorld.Enumerate<TransformComponent, MeshComponent, MeshRendererComponent>())
+		{
+			Renderer.Submit(mesh.Mesh, meshRenderer.Material, entity, transform.WorldTransform);
+		}
+
+		for (var (entity, transform, light) in Scene._ecsWorld.Enumerate<TransformComponent, LightComponent>())
+		{
+			Renderer.Submit(light.SceneLight, transform.WorldTransform);
+		}
+
+		Renderer.EndScene();
+
+		renderTarget.ReleaseRef();
+
+		// TODO: alphablending (handle in Renderer2D)
+		// TODO: 2D-Postprocessing requires rendering into separate target instead of directly into compositeTarget
+
+		RenderCommand.SetRenderTargetGroup(_compositeTarget);
+		RenderCommand.BindRenderTargets();
+
+		// Sprite renderer
+		Renderer2D.BeginScene(*primaryCamera, primaryCameraTransform, .BackToFront);
+
+		for (var (entity, transform, sprite) in Scene._ecsWorld.Enumerate<TransformComponent, SpriteRendererComponent>())
+		{
+			Renderer2D.DrawSprite(transform.WorldTransform, sprite, entity.Index);
+		}
+
+		for (var (entity, transform, circle) in Scene._ecsWorld.Enumerate<TransformComponent, CircleRendererComponent>())
+		{
+			Renderer2D.DrawCircle(transform.WorldTransform, circle, entity.Index);
+		}
+
+		Renderer2D.EndScene();
+
+		// Gamma correct composit target and draw it into viewport
+		{
+			RenderCommand.UnbindRenderTargets();
+			RenderCommand.SetRenderTargetGroup(finalTarget, false);
+			RenderCommand.BindRenderTargets();
+
+			Effect gammaEffect = Content.GetAsset<Effect>(_gammaCorrectEffect);
+
+			gammaEffect.SetTexture("Texture", _compositeTarget, 0);
+			// TODO: iiihhh
+			gammaEffect.ApplyChanges();
+			gammaEffect.Bind();
+
+			FullscreenQuad.Draw();
+		}
+
+		finalTarget.ReleaseRef();
+	}
+
+	public void RenderEditor(GameTime gameTime, EditorCamera camera, RenderTargetGroup viewportTarget, delegate void() DebugDraw3D, delegate void() DrawDebug2D)
+	{
+		Debug.Profiler.ProfileRendererFunction!();
+
+		viewportTarget.AddRef();
+
+		// 3D render
+		Renderer.BeginScene(camera, _compositeTarget);
+
+		for (var (entity, transform, mesh, meshRenderer) in Scene._ecsWorld.Enumerate<TransformComponent, MeshComponent, MeshRendererComponent>())
+		{
+			if (mesh.Mesh == .Invalid || meshRenderer.Material == .Invalid)
+				continue;
+
+			Renderer.Submit(mesh.Mesh, meshRenderer.Material, entity, transform.WorldTransform);
+		}
+
+		for (var (entity, transform, light) in Scene._ecsWorld.Enumerate<TransformComponent, LightComponent>())
+		{
+			Renderer.Submit(light.SceneLight, transform.WorldTransform);
+		}
+
+		DebugDraw3D();
+
+		Renderer.EndScene();
+
+		// TODO: alphablending (handle in Renderer2D)
+		// TODO: 2D-Postprocessing requires rendering into separate target instead of directly into compositeTarget
+
+		RenderCommand.SetRenderTargetGroup(_compositeTarget);
+		RenderCommand.BindRenderTargets();
+
+		// Sprite renderer
+		Renderer2D.BeginScene(camera, .BackToFront);
+
+		for (var (entity, transform, sprite) in Scene._ecsWorld.Enumerate<TransformComponent, SpriteRendererComponent>())
+		{
+			Renderer2D.DrawSprite(transform.WorldTransform, sprite, entity.Index);
+		}
+
+		for (var (entity, transform, circle) in Scene._ecsWorld.Enumerate<TransformComponent, CircleRendererComponent>())
+		{
+			Renderer2D.DrawCircle(transform.WorldTransform, circle, entity.Index);
+		}
+
+		Renderer2D.DrawLine(Vector3.Zero, Vector3.Up, .Red);
+		Renderer2D.DrawLine(Vector3.Zero, Vector3(0, 0, 1), .Green);
+		Renderer2D.DrawRay(Vector3.Zero, Vector3(1, 0, 0), .Blue);
+
+		Renderer2D.DrawRect(Vector2(2.0f, 1.0f), Vector2(1.0f, 2.0f), .Yellow);
+
+		Renderer2D.DrawRect(Matrix.Translation(2, 2, 1) * Matrix.RotationZ(MathHelper.PiOverFour), .Purple);
+
+		Renderer2D.EndScene();
+
+		Renderer2D.BeginScene(camera, .BackToFront);
+
+		DrawDebug2D();
+
+		Renderer2D.EndScene();
+
+		// Gamma correct composit target and draw it into viewport
+		{
+			RenderCommand.UnbindRenderTargets();
+			RenderCommand.SetRenderTargetGroup(viewportTarget, false);
+			RenderCommand.BindRenderTargets();
+			
+			Effect gammaEffect = Content.GetAsset<Effect>(_gammaCorrectEffect);
+
+			gammaEffect.SetTexture("Texture", _compositeTarget, 0);
+			// TODO: iiihhh
+			gammaEffect.ApplyChanges();
+			gammaEffect.Bind();
+
+			FullscreenQuad.Draw();
+		}
+
+		viewportTarget.ReleaseRef();
+	}
+}