1 files changed, 61 insertions, 0 deletions
diff --git a/source/game/systems/physics/PhysicsCollisionDebugSystem.cs b/source/game/systems/physics/PhysicsCollisionDebugSystem.cs
new file mode 100644
index 0000000..f605c30
--- /dev/null
+++ b/source/game/systems/physics/PhysicsCollisionDebugSystem.cs
@@ -0,0 +1,61 @@
+using Celesteia.Game.Components.Physics;
+using Celesteia.Game.Planets;
+using Celesteia.Graphics;
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+using MonoGame.Extended;
+using MonoGame.Extended.Entities;
+using MonoGame.Extended.Entities.Systems;
+
+namespace Celesteia.Game.Systems.Physics {    
+    public class PhysicsCollisionDebugSystem : EntityDrawSystem
+    {
+        private readonly Camera2D _camera;
+        private readonly SpriteBatch _spriteBatch;
+        private readonly ChunkMap _chunkMap;
+
+        private ComponentMapper<Transform2> transformMapper;
+        private ComponentMapper<CollisionBox> collisionBoxMapper;
+
+        public PhysicsCollisionDebugSystem(Camera2D camera, SpriteBatch spriteBatch, ChunkMap chunkMap) : base(Aspect.All(typeof(Transform2), typeof(CollisionBox))) {
+            _camera = camera;
+            _spriteBatch = spriteBatch;
+            _chunkMap = chunkMap;
+        }
+
+        public override void Initialize(IComponentMapperService mapperService)
+        {
+            transformMapper = mapperService.GetMapper<Transform2>();
+            collisionBoxMapper = mapperService.GetMapper<CollisionBox>();
+        }
+
+        public override void Draw(GameTime gameTime)
+        {
+            if (!GameInstance.DebugMode) return;
+
+            _spriteBatch.Begin(SpriteSortMode.Deferred, BlendState.Additive, SamplerState.PointClamp, null, null, null, _camera.GetViewMatrix());
+            
+            foreach (int entityId in ActiveEntities) {
+                Rectangle box = collisionBoxMapper.Get(entityId).Rounded;                
+
+                int minX = box.X;
+                int maxX = box.X + box.Width;
+
+                int minY = box.Y;
+                int maxY = box.Y + box.Height;
+
+                for (int i = minX; i < maxX; i++)
+                    for (int j = minY; j < maxY; j++) {
+                        RectangleF? blockBox = _chunkMap.TestBoundingBox(i, j);
+                        if (blockBox.HasValue) {
+                            _spriteBatch.DrawRectangle(new RectangleF(i, j, blockBox.Value.Width, blockBox.Value.Height), Color.Red, .05f, 0f);
+                        } else {
+                            _spriteBatch.DrawRectangle(new RectangleF(i, j, 1f, 1f), Color.Green, .05f, 0f);
+                        }
+                    }
+            }
+
+            _spriteBatch.End();
+        }
+    }
+}
+\ No newline at end of file