GameFramework.Scene.GetNpcCount C# (CSharp) Method

        internal int GetNpcCount(int startUnitId, int endUnitId)
        {
            int ct = 0;
            for (LinkedListNode<EntityInfo> linkNode = m_EntityMgr.Entities.FirstValue; null != linkNode; linkNode = linkNode.Next) {
                EntityInfo info = linkNode.Value;
                if (null != info && !info.IsDead()) {
                    int unitId = info.GetUnitId();
                    if (unitId >= startUnitId && unitId <= endUnitId) {
                        ++ct;
                    }
                }
            }
            return ct;
        }