public static Boolean Equals(Collision lhs, Collision rhs)
{
if (lhs.Left != rhs.Left) return false;
if (lhs.LeftClsnType != rhs.LeftClsnType) return false;
if (lhs.Right != rhs.Right) return false;
if (lhs.RightClsnType != rhs.RightClsnType) return false;
return true;
}