SomeScheduler

using UnityEngine;
using System.Collections;
using System.Collections.Generic;

[RequireComponent(typeof(NodeController))]
public class AnimalScheduler : NPCScheduler {

	[SerializeField] float idleTime;
	private List<Node> listNode =  new List<Node>();
	float updateTick;
	void Start(){
		base.Start();
	}

	void Update () {
		elapsedTime += GameTime.deltaTime;
		OldTime += GameTime.deltaTime;
		if(elapsedTime > updateTick){
			updateTick = elapsedTime + 0.01f;
			switch (state){
			case State.IDLE:
				if(OldTime > idleTime){
					OldTime = 0;
					if(nodeManager.listNode.Count > 0){
						Node node = RandomNodeICanSee();
						if(node != null){
							scheduledTargets.Add(node.GetTransform());
							SetTarget(node.GetTransform());
						}
					}
				}
				break;

			case State.MOVING:
				OldTime = elapsedTime + 0.01f;
				if (onNode){
					onNode = false;
					if (route.Count > 0){
						currNode = this.route[0].position;
					}
				} else{
					MoveToward();
				}
				break;
			}
		}
	}

	Node RandomNodeICanSee(){
		listNode.Clear();
		for(int x=0; x<nodeManager.listNode.Count; x++){
			Node neighbor = nodeManager.listNode[x];
			if(neighbor.GetTransform() == transform) {break;}
			Vector3 offset = (neighbor.GetPos() - transform.position).normalized;
			float distance =  Vector3.Distance(transform.position+offset, neighbor.GetPos());
			RaycastHit2D hit = Physics2D.Raycast(transform.position+offset, neighbor.GetPos() - transform.position,distance);
			if(hit.collider != null){
				if(hit.transform ==  neighbor.GetTransform() && neighbor.locationId == LocationID.none){
					Debug.DrawLine(transform.position+offset, neighbor.GetPos(), Color.white, 10.1f);
					listNode.Add(neighbor);
				}
			}
		}

		return (listNode.Count > 0)? listNode[Random.Range(0,listNode.Count)] : null;
	}
}