public static AngleThrowAttack Instance(float angle, float range, float bombRadius, int damage)
 {
     var key = new Tuple<float, float, float, int>(angle, range, bombRadius, damage);
     AngleThrowAttack ret;
     if (!instances.TryGetValue(key, out ret))
         ret = instances[key] = new AngleThrowAttack(angle, range, bombRadius, damage);
     return ret;
 }
        public static AngleThrowAttack Instance(float angle, float range, float bombRadius, int damage)
        {
            var key = new Tuple <float, float, float, int>(angle, range, bombRadius, damage);
            AngleThrowAttack ret;

            if (!instances.TryGetValue(key, out ret))
            {
                ret = instances[key] = new AngleThrowAttack(angle, range, bombRadius, damage);
            }
            return(ret);
        }