refactor: moved drawable triangles into systems project for platform agnosticism

Engine.Integration/Engine.Integration.MonoGame/Abstract/ITriangleBatch.cs

@@ -1,12 +0,0 @@
-using Microsoft.Xna.Framework;
-
-using Engine.Core;
-
-namespace Engine.Integration.MonoGame;
-
-public interface ITriangleBatch
-{
-    void Begin(Matrix? view = null, Matrix? projection = null);
-    void Draw(Triangle triangle, ColorRGBA colorRGBA);
-    void End();
-}

Engine.Integration/Engine.Integration.MonoGame/Behaviours/SpriteBatcher.cs

@@ -26,7 +26,7 @@ public class SpriteBatcher : Behaviour, IFirstFrameUpdate, IDraw
 
     public void Draw()
     {
-        spriteBatch.Begin(transformMatrix: camera2D.MatrixTransform);
+        spriteBatch.Begin(transformMatrix: camera2D.ViewMatrix.ToXnaMatrix());
         for (int i = 0; i < drawableSprites.Count; i++)
             drawableSprites[i].Draw(spriteBatch);
         spriteBatch.End();

Engine.Integration/Engine.Integration.MonoGame/Behaviours/TriangleBatcher.cs

@@ -1,40 +0,0 @@
-using System.Collections.Generic;
-
-using Microsoft.Xna.Framework;
-
-using Engine.Core;
-
-namespace Engine.Integration.MonoGame;
-
-public class TriangleBatcher : Behaviour, ITriangleBatch, IFirstFrameUpdate, IDraw
-{
-    private static Comparer<int> SortByAscendingPriority() => Comparer<int>.Create((x, y) => x.CompareTo(y));
-    private static System.Func<IBehaviour, int> GetPriority() => (b) => b.Priority;
-
-    private TriangleBatch triangleBatch = null!;
-    private MonoGameCamera2D camera2D = null!;
-
-    private readonly ActiveBehaviourCollectorOrdered<int, IDrawableTriangle> drawableShapes = new(GetPriority(), SortByAscendingPriority());
-
-    public void FirstActiveFrame()
-    {
-        MonoGameWindowContainer windowContainer = BehaviourController.UniverseObject.Universe.FindRequiredBehaviour<MonoGameWindowContainer>();
-        camera2D = BehaviourController.UniverseObject.Universe.FindRequiredBehaviour<MonoGameCamera2D>();
-
-        triangleBatch = new(windowContainer.Window.GraphicsDevice);
-        drawableShapes.Unassign();
-        drawableShapes.Assign(BehaviourController.UniverseObject.Universe);
-    }
-
-    public void Draw()
-    {
-        triangleBatch.Begin(camera2D.MatrixTransform);
-        for (int i = 0; i < drawableShapes.Count; i++)
-            drawableShapes[i].Draw(triangleBatch);
-        triangleBatch.End();
-    }
-
-    public void Begin(Matrix? view = null, Matrix? projection = null) => triangleBatch.Begin(view, projection);
-    public void Draw(Triangle triangle, ColorRGBA colorRGBA) => triangleBatch.Draw(triangle, colorRGBA);
-    public void End() => triangleBatch.End();
-}

Engine.Integration/Engine.Integration.MonoGame/MonoGameTriangleBatch.cs

@@ -2,24 +2,26 @@ using Microsoft.Xna.Framework;
 using Microsoft.Xna.Framework.Graphics;
 
 using Engine.Core;
+using Engine.Systems.Graphics;
 
 namespace Engine.Integration.MonoGame;
 
-public class TriangleBatch : ITriangleBatch
+public class MonoGameTriangleBatch : Behaviour, ITriangleBatch, IFirstFrameUpdate
 {
-    private readonly GraphicsDevice graphicsDevice;
+    private GraphicsDevice graphicsDevice = null!;
-    private readonly VertexBuffer vertexBuffer = default!;
+    private VertexBuffer vertexBuffer = default!;
     private readonly VertexPositionColor[] vertices = new VertexPositionColor[1024];
 
     private int verticesIndex = 0;
     private Matrix view = Matrix.Identity;
     private Matrix projection = Matrix.Identity;
 
-    private readonly BasicEffect basicEffect = null!;
+    private BasicEffect basicEffect = null!;
     private readonly RasterizerState rasterizerState = new() { CullMode = CullMode.None };
 
-    public TriangleBatch(GraphicsDevice graphicsDevice)
+    public void FirstActiveFrame()
     {
+        GraphicsDevice graphicsDevice = Universe.FindRequiredBehaviour<MonoGameWindowContainer>().Window.GraphicsDevice;
         this.graphicsDevice = graphicsDevice;
         basicEffect = new(graphicsDevice);
         basicEffect.VertexColorEnabled = true;
@@ -41,15 +43,15 @@ public class TriangleBatch : ITriangleBatch
         vertices[verticesIndex++] = new(new(C.X, C.Y, 0f), color);
     }
 
-    public void Begin(Matrix? view = null, Matrix? projection = null)
+    public void Begin(Matrix4x4? view = null, Matrix4x4? projection = null)
     {
         if (view != null)
-            this.view = view.Value;
+            this.view = view.Value.ToXnaMatrix();
         else
             this.view = Matrix.Identity;
 
         if (projection != null)
-            this.projection = projection.Value;
+            this.projection = projection.Value.ToXnaMatrix();
         else
         {
             Viewport viewport = graphicsDevice.Viewport;

Engine.Systems/Graphics/DrawableShape2D.cs

@@ -2,9 +2,9 @@ using System.Collections.Generic;
 
 using Engine.Core;
 
-namespace Engine.Integration.MonoGame;
+namespace Engine.Systems.Graphics;
 
-public class DrawableShape : Behaviour2D, IDrawableTriangle, IPreDraw
+public class DrawableShape2D : Behaviour2D, IDrawableTriangle, IPreDraw
 {
     private readonly Shape2D shape = new([]);
     private readonly List<Triangle> worldTriangles = [];
@@ -23,7 +23,7 @@ public class DrawableShape : Behaviour2D, IDrawableTriangle, IPreDraw
 
     protected void UpdateWorldShape() => shape.Transform(Transform, worldShape);
 
-    public DrawableShape() => shape = Shape2D.Triangle;
+    public DrawableShape2D() => shape = Shape2D.Triangle;
-    public DrawableShape(Shape2D shape) => this.shape = shape;
+    public DrawableShape2D(Shape2D shape) => this.shape = shape;
-    public DrawableShape(Shape2D shape, ColorRGB color) { this.shape = shape; this.color = color; }
+    public DrawableShape2D(Shape2D shape, ColorRGB color) { this.shape = shape; this.color = color; }
 }

Engine.Systems/Graphics/IDrawableTriangle.cs

@@ -1,6 +1,6 @@
 using Engine.Core;
 
-namespace Engine.Integration.MonoGame;
+namespace Engine.Systems.Graphics;
 
 public interface IDrawableTriangle : IBehaviour
 {

Engine.Systems/Graphics/ITriangleBatch.cs

@@ -0,0 +1,10 @@
+using Engine.Core;
+
+namespace Engine.Systems.Graphics;
+
+public interface ITriangleBatch
+{
+    void Begin(Matrix4x4? view = null, Matrix4x4? projection = null);
+    void Draw(Triangle triangle, ColorRGBA colorRGBA);
+    void End();
+}

Engine.Systems/Graphics/TriangleBatcher.cs

@@ -0,0 +1,33 @@
+using System.Collections.Generic;
+
+using Engine.Core;
+
+namespace Engine.Systems.Graphics;
+
+public class TriangleBatcher : Behaviour, IFirstFrameUpdate, IDraw
+{
+    private static Comparer<int> SortByAscendingPriority() => Comparer<int>.Create((x, y) => x.CompareTo(y));
+    private static System.Func<IBehaviour, int> GetPriority() => (b) => b.Priority;
+
+    private ITriangleBatch triangleBatch = null!;
+    private ICamera camera = null!;
+
+    private readonly ActiveBehaviourCollectorOrdered<int, IDrawableTriangle> drawableShapes = new(GetPriority(), SortByAscendingPriority());
+
+    public void FirstActiveFrame()
+    {
+        camera = Universe.FindRequiredBehaviour<ICamera>();
+
+        triangleBatch = Universe.FindRequiredBehaviour<ITriangleBatch>();
+        drawableShapes.Unassign();
+        drawableShapes.Assign(Universe);
+    }
+
+    public void Draw()
+    {
+        triangleBatch.Begin(camera.ViewMatrix, camera.ProjectionMatrix);
+        for (int i = 0; i < drawableShapes.Count; i++)
+            drawableShapes[i].Draw(triangleBatch);
+        triangleBatch.End();
+    }
+}