From 90a632c4a4d3f4bb7805e57e2b7d168fd89edeaa Mon Sep 17 00:00:00 2001
From: Nik <ighosta9@gmail.com>
Date: Wed, 11 Oct 2023 12:29:56 +0300
Subject: [PATCH] chore: draw rect collision component & conditional debug

---
 .../Features/RootFeatureCompositionRoot.cs    | 15 ++++------
 .../DrawRectangleCollisionComponentsSystem.cs | 30 ++++++++++++++++++-
 src/Libs/Systems/DefaultDrawSystem.cs         |  4 +++
 3 files changed, 38 insertions(+), 11 deletions(-)

diff --git a/src/Apps/GameDesktop/CompositionRoots/Features/RootFeatureCompositionRoot.cs b/src/Apps/GameDesktop/CompositionRoots/Features/RootFeatureCompositionRoot.cs
index b391b2c..3edf6d1 100644
--- a/src/Apps/GameDesktop/CompositionRoots/Features/RootFeatureCompositionRoot.cs
+++ b/src/Apps/GameDesktop/CompositionRoots/Features/RootFeatureCompositionRoot.cs
@@ -24,21 +24,18 @@ public void Compose(IServiceRegistry serviceRegistry)
 
         RegisterFeatures(serviceRegistry);
 
-        // Extra pre-entry point for debugging, might be safely excluded
+#if DEBUG
         serviceRegistry.RegisterFrom<DebugRootFeatureCompositionRoot>();
+#endif
 
         RegisterEntryPoint(serviceRegistry);
     }
 
-    private static void RegisterFundamental(IServiceRegistry serviceRegistry)
-    {
+    private static void RegisterFundamental(IServiceRegistry serviceRegistry) =>
         serviceRegistry.RegisterFrom<FundamentalCompositionRoot>();
-    }
 
-    private static void RegisterComponents(IServiceRegistry serviceRegistry)
-    {
+    private static void RegisterComponents(IServiceRegistry serviceRegistry) =>
         serviceRegistry.RegisterFrom<ComponentsCompositionRoot>();
-    }
 
     private static void RegisterEntities(IServiceRegistry serviceRegistry)
     {
@@ -54,8 +51,6 @@ private static void RegisterFeatures(IServiceRegistry serviceRegistry)
         serviceRegistry.RegisterFrom<MovementFeatureCompositionRoot>();
     }
 
-    private static void RegisterEntryPoint(IServiceRegistry serviceRegistry)
-    {
+    private static void RegisterEntryPoint(IServiceRegistry serviceRegistry) =>
         serviceRegistry.RegisterSingleton<RootFeature>();
-    }
 }
diff --git a/src/Libs/Systems.Debugging/DrawRectangleCollisionComponentsSystem.cs b/src/Libs/Systems.Debugging/DrawRectangleCollisionComponentsSystem.cs
index c322b10..f0ce73e 100644
--- a/src/Libs/Systems.Debugging/DrawRectangleCollisionComponentsSystem.cs
+++ b/src/Libs/Systems.Debugging/DrawRectangleCollisionComponentsSystem.cs
@@ -9,16 +9,44 @@ namespace Systems.Debugging;
 public class DrawRectangleCollisionComponentsSystem : IDrawSystem
 {
     private readonly Contexts _contexts;
+    private readonly IGroup<GameEntity> _group;
     private readonly ILogger _logger;
 
     public DrawRectangleCollisionComponentsSystem(Contexts contexts, IGroup<GameEntity> group, ILogger logger)
     {
         _contexts = contexts;
+        _group = group;
         _logger = logger;
     }
 
     public void Draw(GameTime gameTime, SpriteBatch spriteBatch)
     {
-        _logger.ForContext<DrawRectangleCollisionComponentsSystem>().Verbose("Draw");
+        GameEntity[] entities = _group.GetEntities();
+
+
+        spriteBatch.Begin(samplerState: SamplerState.PointClamp);
+
+        // temp start
+        Color[] colors = { Color.Black, Color.White };
+        int i = 0;
+        // temp end
+
+        foreach (var e in entities)
+        {
+            Vector2 at = e.transform.Position;
+            Rectangle rectangleSize = e.rectangleCollision.Size;
+
+            // temp start
+            var texture = new Texture2D(spriteBatch.GraphicsDevice, 1, 1);
+            texture.SetData(new[] { colors[i] });
+            ++i;
+            if (i is 2)
+                i = 0;
+            // temp end
+
+            spriteBatch.Draw(texture, at, sourceRectangle: rectangleSize, Color.White);
+        }
+
+        spriteBatch.End();
     }
 }
diff --git a/src/Libs/Systems/DefaultDrawSystem.cs b/src/Libs/Systems/DefaultDrawSystem.cs
index c6531de..b57564a 100644
--- a/src/Libs/Systems/DefaultDrawSystem.cs
+++ b/src/Libs/Systems/DefaultDrawSystem.cs
@@ -38,4 +38,8 @@ public void Draw(GameTime gameTime, SpriteBatch spriteBatch)
 
         spriteBatch.End();
     }
+    // TODO: When camera following feature is enabled,
+    // Make it working with other drawing systems, e.g. debug drawing.
+    // Thus, draw relatively to camera.
+    // Share rendering results with other systems (sorting, etc)
 }