diff --git a/Engine.Physics2D/CollisionDetector.cs b/Engine.Physics2D/CollisionDetector.cs
index 8829d57..4845f64 100644
--- a/Engine.Physics2D/CollisionDetector.cs
+++ b/Engine.Physics2D/CollisionDetector.cs
@@ -49,17 +49,34 @@ public class CollisionDetector : ICollisionDetector
     {
         collisionInformation = default;
 
-        Vector2D leftToRightCenter = left.CircleWorld.Center.FromTo(right.CircleWorld.Center);
-        float distanceCircleCenter = leftToRightCenter.Magnitude;
-        float radiusSum = left.CircleWorld.Radius + right.CircleWorld.Radius;
+        Vector2D leftToRightCenterProjectionVector = left.CircleWorld.Center.FromTo(right.CircleWorld.Center).Normalized;
 
-        float circleSurfaceDistance = distanceCircleCenter - radiusSum;
+        Projection leftProjection = left.CircleWorld.ToProjection(leftToRightCenterProjectionVector);
+        Projection rightProjection = right.CircleWorld.ToProjection(leftToRightCenterProjectionVector);
 
-        bool collision = circleSurfaceDistance <= 0f;
+        bool collision = leftProjection.Overlaps(rightProjection, out float depth);
 
         if (collision)
-            collisionInformation = new(left, right, leftToRightCenter.Normalized, -circleSurfaceDistance);
+            collisionInformation = new(left, right, leftToRightCenterProjectionVector, depth);
 
         return collision;
     }
+
+    // private static bool DetectCircleCircle(ICircleCollider2D left, ICircleCollider2D right, out CollisionDetectionInformation? collisionInformation)
+    // {
+    //     collisionInformation = default;
+
+    //     Vector2D leftToRightCenter = left.CircleWorld.Center.FromTo(right.CircleWorld.Center);
+    //     float distanceCircleCenter = leftToRightCenter.Magnitude;
+    //     float radiusSum = left.CircleWorld.Radius + right.CircleWorld.Radius;
+
+    //     float circleSurfaceDistance = distanceCircleCenter - radiusSum;
+
+    //     bool collision = circleSurfaceDistance <= 0f;
+
+    //     if (collision)
+    //         collisionInformation = new(left, right, leftToRightCenter.Normalized, -circleSurfaceDistance);
+
+    //     return collision;
+    // }
 }