GameFramework.AiLogicUtility.GetSeeingLivingCharacterInfoHelper C# (CSharp) Method

        public static EntityInfo GetSeeingLivingCharacterInfoHelper(EntityInfo srcObj, int id)
        {
            EntityInfo target = srcObj.EntityManager.GetEntityInfo(id);
            if (null != target) {
                if (target.IsHaveStateFlag(CharacterState_Type.CST_Hidden))
                    target = null;
                else if (target.IsDead())
                    target = null;
                else if (!CanSee(srcObj, target))
                    target = null;
            }
            return target;
        }

        internal static void DoPatrolCommandState(EntityInfo entity, long deltaTime, AbstractAiStateLogic logic)
        {
            AiStateInfo info = entity.GetAiStateInfo();

            info.Time += deltaTime;
            if (info.Time > 100)
            {
                info.Time = 0;
                EntityInfo target = null;
                if (info.IsExternalTarget)
                {
                    target = AiLogicUtility.GetSeeingLivingCharacterInfoHelper(entity, info.Target);
                    if (null == target)
                    {
                        target = AiLogicUtility.GetNearstTargetHelper(entity, CharacterRelation.RELATION_ENEMY);
                        if (null != target)
                        {
                            info.Target = target.GetId();
                        }
                    }
                }
                else
                {
                    target = AiLogicUtility.GetNearstTargetHelper(entity, CharacterRelation.RELATION_ENEMY);
                    if (null != target)
                    {
                        info.Target = target.GetId();
                    }
                }
                if (null != target)
                {
                    logic.AiSendStoryMessage(entity, "obj_patrol_exit", entity.GetId());
                    logic.AiSendStoryMessage(entity, string.Format("npc_patrol_exit:{0}", entity.GetUnitId()), entity.GetId());
                    logic.ChangeToState(entity, (int)AiStateId.Idle);
                }
                else
                {
                    AiData_ForPatrolCommand data = GetAiDataForPatrolCommand(entity);
                    if (null != data)
                    {
                        ScriptRuntime.Vector3 srcPos = entity.GetMovementStateInfo().GetPosition3D();
                        if (data.PatrolPath.HavePathPoint && !data.PatrolPath.IsReached(srcPos))
                        {
                            logic.NotifyAiPursue(entity, data.PatrolPath.CurPathPoint);
                        }
                        else
                        {
                            data.PatrolPath.UseNextPathPoint();
                            if (data.PatrolPath.HavePathPoint)
                            {
                                logic.NotifyAiPursue(entity, data.PatrolPath.CurPathPoint);
                            }
                            else
                            {
                                if (data.IsLoopPatrol)
                                {
                                    logic.AiSendStoryMessage(entity, "obj_patrol_restart", entity.GetId());
                                    logic.AiSendStoryMessage(entity, string.Format("npc_patrol_restart:{0}", entity.GetUnitId()), entity.GetId());
                                    data.PatrolPath.Restart();
                                }
                                else
                                {
                                    logic.AiSendStoryMessage(entity, "obj_patrol_finish", entity.GetId());
                                    logic.AiSendStoryMessage(entity, string.Format("npc_patrol_finish:{0}", entity.GetUnitId()), entity.GetId());
                                    logic.NotifyAiStopPursue(entity);
                                    logic.ChangeToState(entity, (int)AiStateId.Idle);
                                }
                            }
                        }
                        info.HomePos = entity.GetMovementStateInfo().GetPosition3D();
                    }
                    else
                    {
                        logic.NotifyAiStopPursue(entity);
                        logic.ChangeToState(entity, (int)AiStateId.Idle);
                    }
                }
            }
        }