public static bool Overlaps(Sprite s1, Sprite s2)
 {
     if (s1.Position.X + s1.Size.Width < s2.Position.X)
         return false;
     if (s1.Position.X > s2.Position.X + s2.Size.Width)
         return false;
     if (s1.Position.Y + s1.Size.Height < s2.Position.Y)
         return false;
     if (s1.Position.Y > s2.Position.Y + s2.Size.Height)
         return false;
     return true;
 }
 /// <summary>
 /// Calculates if rectangles describing two sprites
 /// are overlapping on screen.
 /// </summary>
 /// <param name="s1">First sprite</param>
 /// <param name="s2">Second sprite</param>
 /// <returns>Returns true if overlapping</returns>
 public static bool Overlaps(Sprite s1, Sprite s2)
 {
     if  (s1.Position.X > s2.Position.X && s1.Position.X < s2.Position.X + s2.Size.Width &&
         s1.Position.Y > s2.Position.Y && s1.Position.Y < s2.Position.Y + s2.Size.Height ||
         s1.Position.X > s2.Position.X && s1.Position.X < s2.Position.X + s2.Size.Width &&
         s1.Position.Y + s1.Size.Height > s2.Position.Y && s1.Position.Y + s1.Size.Height < s2.Position.Y + s2.Size.Height ||
         s1.Position.X + s1.Size.Width > s2.Position.X && s1.Position.X + s1.Size.Width < s2.Position.X + s2.Size.Width &&
         s1.Position.Y > s2.Position.Y && s1.Position.Y < s2.Position.Y + s2.Size.Height ||
         s1.Position.X + s1.Size.Width > s2.Position.X && s1.Position.X + s1.Size.Width < s2.Position.X + s2.Size.Width &&
         s1.Position.Y + s1.Size.Height > s2.Position.Y && s1.Position.Y + s1.Size.Height < s2.Position.Y + s2.Size.Height)
         return true;
     else return false;
 }
 /// <summary> 
 /// Calculates if rectangles describing two sprites 
 /// are overlapping on screen. 
 /// </summary> 
 /// <param name="s1">First sprite</param> 
 /// <param name="s2">Second sprite</param> 
 /// <returns>Returns true if overlapping</returns>
 public static bool Overlaps(Sprite s1, Sprite s2)
 {
     float s1x = s1.Position.X;
     float s1y = s1.Position.Y;
     float s1w = s1.Size.Width;
     float s1h = s1.Size.Height;
     float s2x = s2.Position.X;
     float s2y = s2.Position.Y;
     float s2w = s2.Size.Width;
     float s2h = s2.Size.Height;
     
     // overlapping on x
     if ((s1x + s1w > s2x && s1x < s2x + s2w)
         //overlapping on y
         && (s1y + s1h > s2y && s1y < s2y + s2h))
     {
         return true;
     }
     return false;
 }