Simple d3 pickit

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;

using D3;

namespace PickIt
{
     public class Program
     {
          private static int _frameCount = 0;

          public static void Main(string[] args)
          {
               Game.Print("PickIt: Now monitoring drops");

               Game.OnTickEvent += new TickEventHandler(Game_OnTickEvent);
          }

          private static void Game_OnTickEvent(EventArgs e)
          {
               if(++_frameCount % 20 != 0)
               {
                    return;
               }

               PickItems();
          }

          private static void PickItems()
          {
               List<Unit> items = GetItems();

               foreach (Unit item in items)
               {
                    if(GetDistance(Me.X, Me.Y, item.X, item.Y) < 5)
                    {
                         Game.Print("Picking: " + item.Name);

                         Me.UsePower(SNOPowerId.Axe_Operate_Gizmo, item);
                    }
               }
          }

          private static List<Unit> GetItems()
          {
               List<Unit> items = new List<Unit>();

               foreach(Unit u in Unit.Get())
               {
                    if(CheckItem(u) && u.ItemContainer == Container.Unknown)
                    {
                         items.Add(u);
                    }
               }

               return items;
          }

          private static bool CheckItem(Unit unit)
          {
               return
                       unit.ActorId == SNOActorId.healthPotion_Minor
                    || unit.ActorId == SNOActorId.healthPotion_Lesser
                    || unit.ActorId == SNOActorId.healthPotion_Normal
                    || unit.ActorId == SNOActorId.healthPotion_Greater
                    || unit.ActorId == SNOActorId.healthPotion_Super
                    || unit.Name.Contains("Topaz") // stones
                    || unit.Name.Contains("Amethyst")
                    || unit.Name.Contains("Emerald")
                    || unit.Name.Contains("Ruby")
                    || unit.Name.Contains("Book of") // crafting materials (add "page"?)
                    || unit.Name.Contains("Page of")
                    || unit.Name.Contains("Tome")
                    || unit.Name.Contains("Mythic") // Health potions
                    || unit.ItemQuality >= UnitItemQuality.Magic1;
          }

          public static float GetDistance(float x, float y, float x2, float y2)
          {
               return (float)Math.Sqrt(Math.Pow(x - x2, 2) + Math.Pow(y - y2, 2));
          }
     }
}