Isplayer in view (from object)

Hi I am checking to scan for players around an entity based on distance and object angle (to determinate the facing). So, when a player is in range and in a 30-90degree facing vision of the object, it returns true (just like a camera would do when detecting a player that it's looking at).

I've looked at the shotgun trap detection

Code:

public bool CheckTrigger(float offset, float radius)
    {
        List<RaycastHit> list = Pool.GetList<RaycastHit>();
        List<BasePlayer> basePlayers = Pool.GetList<BasePlayer>();
        Vis.Entities<BasePlayer>(this.GetEyePosition() + (base.transform.forward * offset), radius, basePlayers, 131072, QueryTriggerInteraction.Collide);
        bool flag = false;
        foreach (BasePlayer basePlayer in basePlayers)
        {
            if (basePlayer.IsSleeping() || !basePlayer.IsAlive() || basePlayer.IsBuildingAuthed())
            {
                continue;
            }
            object obj = Interface.CallHook("CanBeTargeted", basePlayer, this);
            if (obj as bool)
            {
                Pool.FreeList<RaycastHit>(ref list);
                Pool.FreeList<BasePlayer>(ref basePlayers);
                return (bool)obj;
            }
            list.Clear();
            Vector3 vector3 = basePlayer.eyes.position;
            Vector3 eyePosition = this.GetEyePosition() - basePlayer.eyes.position;
            GamePhysics.TraceAll(new Ray(vector3, eyePosition.normalized), 0f, list, 9f, 1084301569, QueryTriggerInteraction.UseGlobal);
            int num = 0;
            while (num < list.Count)
            {
                BaseEntity entity = list[num].GetEntity();
                if (entity != null && (entity == this || entity.EqualNetID(this)))
                {
                    flag = true;
                    break;
                }
                else if (!(entity != null) || entity.ShouldBlockProjectiles())
                {
                    break;
                }
                else
                {
                    num++;
                }
            }
            if (!flag)
            {
                continue;
            }
            break;
        }
        Pool.FreeList<RaycastHit>(ref list);
        Pool.FreeList<BasePlayer>(ref basePlayers);
        return flag;
    }

Can I use this and do if (CheckTrigger(3f, 1.25f)) Puts("Detected!"); //example

Is there a simplier way with fewer lines or that's exactly what I need?