Many ecs, component and editor changes

GlitchyEditor/src/EditWindows/SceneViewportWindow.bf

@@ -10,7 +10,7 @@ namespace GlitchyEditor.EditWindows
 {
 	class SceneViewportWindow : EditorWindow
 	{
-		public Camera _camera;
+		public OldCamera _camera;
 
 		public const String s_WindowTitle = "Scene";
 

GlitchyEditor/src/EditorLayer.bf

@@ -28,6 +28,9 @@ namespace GlitchyEditor
 		
 		RenderTarget2D _viewportTarget ~ _?.ReleaseRef();
 
+		Entity _cameraEntity;
+		Entity _otherCameraEntity;
+
 		public this() : base("Example")
 		{
 			Application.Get().Window.IsVSync = false;
@@ -35,6 +38,26 @@ namespace GlitchyEditor
 			InitGraphics();
 			//InitEcs();
 			InitEditor();
+
+			{
+				_cameraEntity = _scene.CreateEntity("Camera Entity");
+				let camera = _cameraEntity.AddComponent<CameraComponent>();
+				camera.Camera.SetPerspective(0.1f, 1000f, MathHelper.ToRadians(75));
+				camera.Primary = true;
+				camera.FixedAspectRatio = false;
+				let transform = _cameraEntity.GetComponent<SimpleTransformComponent>();
+				transform.Transform = Matrix.Translation(0, 0, -5);
+			}
+
+			{
+				_otherCameraEntity = _scene.CreateEntity("Other Camera Entity");
+				let camera = _otherCameraEntity.AddComponent<CameraComponent>();
+				camera.Camera.SetPerspective(0.1f, 1000f, MathHelper.ToRadians(45));
+				camera.Primary = false;
+				camera.FixedAspectRatio = false;
+				let transform = _otherCameraEntity.GetComponent<SimpleTransformComponent>();
+				transform.Transform = Matrix.Translation(0, 0, -5);
+			}
 		}
 
 		private void InitGraphics()
@@ -56,18 +79,6 @@ namespace GlitchyEditor
 			_viewportTarget.SamplerState = SamplerStateManager.LinearClamp;
 		}
 
-		/*private void InitEcs()
-		{
-			_world.Register<DebugNameComponent>();
-			_world.Register<TransformComponent>();
-			_world.Register<ParentComponent>();
-			_world.Register<MeshComponent>();
-			_world.Register<MeshRendererComponent>();
-			_world.Register<SkinnedMeshRendererComponent>();
-			_world.Register<CameraComponent>();
-			_world.Register<AnimationComponent>();
-		}*/
-
 		private void InitEditor()
 		{
 			_editor = new Editor(_scene);
@@ -104,12 +115,7 @@ namespace GlitchyEditor
 			
 			//Renderer.EndScene();
 
-			Renderer2D.BeginScene(_cameraController.Camera);
-			
 			_scene.Update(gameTime);
-			
-			Renderer2D.EndScene();
-
 
 			RenderCommand.Clear(null, .Color | .Depth, .(0.2f, 0.2f, 0.2f), 1.0f, 0);
 
@@ -133,6 +139,18 @@ namespace GlitchyEditor
 
 		private bool OnImGuiRender(ImGuiRenderEvent event)
 		{
+			ImGui.Begin("Test");
+
+			static bool cameraA = true;
+
+			if (ImGui.Checkbox("Camera A", &cameraA))
+			{
+				_cameraEntity.GetComponent<CameraComponent>().Primary = cameraA;
+				_otherCameraEntity.GetComponent<CameraComponent>().Primary = !cameraA;
+			}
+
+			ImGui.End();
+
 			ImGui.Viewport* viewport = ImGui.GetMainViewport();
 			ImGui.DockSpaceOverViewport(viewport);
 
@@ -194,6 +212,8 @@ namespace GlitchyEditor
 			_viewportTarget.Resize(sizeX, sizeY);
 
 			_cameraController.AspectRatio = (float)sizeX / (float)sizeY;
+
+			_scene.OnViewportResize(sizeX, sizeY);
 		}
 	}
 }

GlitchyEngine/src/Renderer/Camera.bf

@@ -3,7 +3,25 @@ using GlitchyEngine.Math;
 
 namespace GlitchyEngine.Renderer
 {
-	public abstract class Camera
+	struct Camera
+	{
+		protected Matrix _projection;
+
+		public Matrix Projection => _projection;
+
+		protected this()
+		{
+			_projection = .Identity;
+		}
+
+		public this(Matrix projection)
+		{
+			_projection = projection;
+		}
+	}
+
+
+	public abstract class OldCamera
 	{
 		protected Matrix _view;
 		protected Matrix _transform;

GlitchyEngine/src/Renderer/CameraComponent.bf

@@ -2,7 +2,7 @@ using GlitchyEngine.Math;
 
 namespace GlitchyEngine.Renderer
 {
-	public struct CameraComponent
+	public struct OldCameraComponent
 	{
 		public enum Projection
 		{
@@ -29,10 +29,11 @@ namespace GlitchyEngine.Renderer
 			 */
 			Orthographic
 		}
-
+		
 		float _nearPlane;
 		float _farPlane;
 		Projection _projectionType;
+
 		float _fovY;
 		float _aspect;
 

GlitchyEngine/src/Renderer/OrthographicCamera.bf

@@ -2,7 +2,7 @@ using GlitchyEngine.Math;
 
 namespace GlitchyEngine.Renderer
 {
-	public class OrthographicCamera : Camera
+	public class OrthographicCamera : OldCamera
 	{
 		protected float _bottom, _left, _right, _top;
 

GlitchyEngine/src/Renderer/PerspectiveCamera.bf

@@ -6,7 +6,7 @@ namespace GlitchyEngine.Renderer
 	/**
 	 * If FarPlane is float.PositiveInfinity the projection matrix will be an infinite projection (that means no far plane)
 	 */
-	public class PerspectiveCamera : Camera
+	public class PerspectiveCamera : OldCamera
 	{
 		public enum ProjectionType
 		{

GlitchyEngine/src/Renderer/Renderer.bf

@@ -79,7 +79,8 @@ namespace GlitchyEngine.Renderer
 			LineGeometry.SetVertexLayout(layout..ReleaseRefNoDelete());
 		}
 
-		public static void BeginScene(EcsWorld world, EcsEntity cameraEntity)
+		// TODO
+		/*public static void BeginScene(EcsWorld world, EcsEntity cameraEntity)
 		{
 			Debug.Profiler.ProfileRendererFunction!();
 
@@ -91,9 +92,9 @@ namespace GlitchyEngine.Renderer
 			var proj = camera.Projection;
 
 			_sceneConstants.ViewProjection = proj * view;
-		}
+		}*/
 
-		public static void BeginScene(Camera camera)
+		public static void BeginScene(OldCamera camera)
 		{
 			Debug.Profiler.ProfileRendererFunction!();
 

GlitchyEngine/src/Renderer/Renderer2D.bf

@@ -3,6 +3,7 @@ using System.Collections;
 using System;
 using System.Diagnostics;
 using GlitchyEngine.Renderer.Text;
+using GlitchyEngine.World;
 
 namespace GlitchyEngine.Renderer
 {
@@ -362,7 +363,8 @@ namespace GlitchyEngine.Renderer
 #endif
 		}
 
-		public static void BeginScene(Camera camera, DrawOrder drawOrder = .SortByTexture, Effect effect = null, Effect circleEffect = null)
+		// TODO: remove?
+		public static void BeginScene(OldCamera camera, DrawOrder drawOrder = .SortByTexture, Effect effect = null, Effect circleEffect = null)
 		{
 			Debug.Profiler.ProfileRendererFunction!();
 #if DEBUG
@@ -397,6 +399,48 @@ namespace GlitchyEngine.Renderer
 
 			s_drawOrder = drawOrder;
 			
+#if DEBUG
+			s_sceneRunning = true;
+#endif
+		}
+
+		public static void BeginScene(Camera camera, Matrix transform, DrawOrder drawOrder = .SortByTexture, Effect effect = null, Effect circleEffect = null)
+		{
+			Debug.Profiler.ProfileRendererFunction!();
+#if DEBUG
+			Log.EngineLogger.AssertDebug(s_initialized, "Renderer2D was not initialized.");
+			Log.EngineLogger.AssertDebug(!s_sceneRunning, "You have to call EndScene before you can make another call to BeginScene.");
+#endif
+
+			//s_textureColorEffect.Bind(Renderer._context);
+			
+			s_currentEffect?.ReleaseRef();
+			if(effect != null)
+			{
+				s_currentEffect = effect..AddRef();
+			}
+			else
+			{
+				s_currentEffect = s_batchEffect..AddRef();
+			}
+
+			s_currentCircleEffect?.ReleaseRef();
+			if(circleEffect != null)
+			{
+				s_currentCircleEffect = effect..AddRef();
+			}
+			else
+			{
+				s_currentCircleEffect = s_circleBatchEffect..AddRef();
+			}
+
+			Matrix viewProjection = camera.Projection * Matrix.Invert(transform);
+			
+			s_currentEffect.Variables["ViewProjection"].SetData(viewProjection);
+			s_currentCircleEffect.Variables["ViewProjection"].SetData(viewProjection);
+
+			s_drawOrder = drawOrder;
+			
 #if DEBUG
 			s_sceneRunning = true;
 #endif

GlitchyEngine/src/World/Components.bf

@@ -1,4 +1,6 @@
 using GlitchyEngine.Math;
+using GlitchyEngine.Renderer;
+using System;
 
 namespace GlitchyEngine.World
 {
@@ -31,4 +33,94 @@ namespace GlitchyEngine.World
 			Color = color;
 		}
 	}
+
+	struct SceneCamera : Camera
+	{
+		public enum ProjectionType
+		{
+			case Perspective(float FovY, float NearPlane, float FarPlane);
+			case InfinitePerspective(float FovY, float NearPlane);
+			case Orthographic(float Height, float NearPlane, float FarPlane);
+		}
+
+		private float _aspectRatio = 16.0f / 9.0f;
+
+		private ProjectionType _projectionType = .InfinitePerspective(MathHelper.ToRadians(75f), 0.1f);
+
+		public ProjectionType ProjectionType
+		{
+			get => _projectionType;
+			set mut
+			{
+				_projectionType = value;
+				CalculateProjection();
+			}
+		}
+
+		private const Matrix mat = Matrix.InfinitePerspectiveProjection(MathHelper.ToRadians(75f), 1.0f, 0.1f);
+
+		public this()
+		{
+			CalculateProjection();
+		}
+
+		public void SetOrthographic(float height, float nearPlane, float farPlane) mut
+		{
+			_projectionType = .Orthographic(height, nearPlane, farPlane);
+
+			CalculateProjection();
+		}
+		
+		public void SetPerspective(float fovY, float nearPlane, float farPlane) mut
+		{
+			_projectionType = .Perspective(fovY, nearPlane, farPlane);
+
+			CalculateProjection();
+		}
+
+		public void SetInfinitePerspective(float fovY, float nearPlane) mut
+		{
+			_projectionType = .InfinitePerspective(fovY, nearPlane);
+
+			CalculateProjection();
+		}
+
+		public void SetViewportSize(uint32 width, uint32 height) mut
+		{
+			_aspectRatio = (float)width / (float)height;
+
+			CalculateProjection();
+		}
+
+		private void CalculateProjection() mut
+		{
+			if (_projectionType case .Orthographic(let nearPlane, let farPlane, let projectionHeight))
+			{
+				float halfHeight = projectionHeight / 2.0f;
+				float halfWidth = halfHeight / _aspectRatio;
+
+				_projection = Matrix.OrthographicProjectionOffCenter(-halfWidth, halfWidth, halfHeight, -halfHeight, nearPlane, farPlane);
+			}
+			else if (_projectionType case .Perspective(let nearPlane, let farPlane, let fovY))
+			{
+				_projection = Matrix.PerspectiveProjection(fovY, _aspectRatio, nearPlane, farPlane);
+			}
+			else if (_projectionType case .InfinitePerspective(let nearPlane, let fovY))
+			{
+				_projection = Matrix.InfinitePerspectiveProjection(fovY, _aspectRatio, nearPlane);
+			}
+		}
+	}
+
+	struct CameraComponent
+	{
+		public SceneCamera Camera;
+		public bool Primary = true; // Todo: probably move into scene
+		public bool FixedAspectRatio = false;
+
+		public this()
+		{
+			Camera = .();
+		}	
+	}
 }

GlitchyEngine/src/World/Scene.bf

@@ -22,11 +22,30 @@ namespace GlitchyEngine.World
 		{
 			//TransformSystem.Update(_ecsWorld);
 
-			for (var (entity, transform, sprite) in _ecsWorld.Enumerate<SimpleTransformComponent, SpriterRendererComponent>())
-			{
-				Renderer2D.DrawQuad(transform.Transform, sprite.Color);
-			}
+			Camera* primaryCamera = null;
+			Matrix* primaryCameraTransform = null;
 
+			for (var (entity, transform, camera) in _ecsWorld.Enumerate<SimpleTransformComponent, CameraComponent>())
+			{
+				if (camera.Primary)
+				{
+					primaryCamera = &camera.Camera;
+					primaryCameraTransform = &transform.Transform;
+				}
+			}
+			
+			// Sprite renderer
+			if (primaryCamera != null)
+			{ 
+				Renderer2D.BeginScene(*primaryCamera, *primaryCameraTransform);
+	
+				for (var (entity, transform, sprite) in _ecsWorld.Enumerate<SimpleTransformComponent, SpriterRendererComponent>())
+				{
+					Renderer2D.DrawQuad(transform.Transform, sprite.Color);
+				}
+	
+				Renderer2D.EndScene();
+			}
 		}
 
 		public Entity CreateEntity(String name = "")
@@ -44,5 +63,22 @@ namespace GlitchyEngine.World
 		{
 			_ecsWorld.RemoveEntity(entity.Handle);
 		}
+
+		private uint32 ViewportWidth, ViewportHeight;
+
+		/// Sets the size of the viewport into which the scene will be rendered.
+		public void OnViewportResize(uint32 width, uint32 height)
+		{
+			ViewportWidth = width;
+			ViewportHeight = height;
+
+			for (var (entity, cameraComponent) in _ecsWorld.Enumerate<CameraComponent>())
+			{
+				if (!cameraComponent.FixedAspectRatio)
+				{
+					cameraComponent.Camera.SetViewportSize(width, height);
+				}
+			}
+		}
 	}
 }