source: binary-improvements/7dtd-server-fixes/src/LiveData/Hostiles.cs@ 309

using System;
using System.Collections.Generic;

namespace AllocsFixes.LiveData
{
        public class Hostiles
        {
                public static void Get (List<EntityEnemy> _list) {
                        _list.Clear ();
                        try {
                                List<Entity> entities = GameManager.Instance.World.Entities.list;
                                for (int i = 0; i < entities.Count; i++) {
                                        Entity entity = entities [i];

                                        if (entity is EntityEnemy) {
                                                if (entity.IsAlive ())
                                                        _list.Add (entity as EntityEnemy);
                                        }
                                }
                        }
                        catch (Exception e) {
                                Log.Exception (e);
                        }
                }

                public static int GetCount () {
                        int count = 0;
                        try {
                                List<Entity> entities = GameManager.Instance.World.Entities.list;
                                for (int i = 0; i < entities.Count; i++) {
                                        Entity entity = entities [i];

                                        if (entity.entityType == EntityType.Zombie) {
                                                EntityEnemy ee = (EntityEnemy)entity;

                                                if (ee.IsAlive ())
                                                        count++;
                                        }
                                }
                        }
                        catch (Exception e) {
                                Log.Exception (e);
                        }
                        return count;
                }
        }
}