public static MonsterStatistics Subtract(MonsterStatistics a, MonsterStatistics b)
        {
            MonsterStatistics result = new MonsterStatistics();

            result.Health = a.Health - b.Health;
            result.Speed  = a.Speed - b.Speed;

            return(result);
        }
        public static MonsterStatistics Multiply(MonsterStatistics a, float b)
        {
            MonsterStatistics result = new MonsterStatistics();

            result.Health = (int)(a.Health * b);
            result.Speed  = a.Speed * b;

            return(result);
        }
        public static MonsterStatistics Add(MonsterStatistics a, MonsterStatistics b)
        {
            MonsterStatistics result = new MonsterStatistics();

            result.Health = a.Health + b.Health;
            result.Speed  = a.Speed + b.Speed;

            return(result);
        }