Add collision detection with octree

EvilSatellites/Objects/IGameObject.cs

@@ -5,20 +5,20 @@ using Microsoft.Xna.Framework;
 
 namespace EvilSatellites.Objects
 {
-    public interface IGameObject
+    public interface IGameObject : EvilSatellites.Quadtree.Positional
     {
         void Activate();
         void Destroy();
         Vector3 Position { get; set; }
         Vector3 Dimensions { get; set; }
         Vector3 Orientation { get; set; }
-        // Vector3 Movement { get; set; }
+        bool IsDynamic { get; }
         float Theta { get; set; }
         Matrix Rotation { get; set; }
         void Update(GameTime gameTime);
         ObjectType Type { get; set; }
         void Move(Vector3 pose);
-        
+        void OnCollision(IGameObject obj);
         
     }
 }