Follow_Nonplayer

using UnityEngine;
using System.Collections;

/*
This script controls generic non-player characters that follow another character.
*/
public class Follow_NonPlayer : MonoBehaviour {

	Animator anim;
	NavMeshAgent agent;
	//follow this 
	public GameObject target;
	//how far away from the target
	public int maxDistance;
	public int minDistance;

	// Use this for initialization
	void Start () {
		anim = GetComponent<Animator> ();
		agent = GetComponent<NavMeshAgent> ();

		//fixes spin on collision
		GetComponent<Rigidbody> ().freezeRotation = true;
	}

	// Update is called once per frame
	void Update () {
		
		CheckTarget ();
	}

	//check status of target
	void CheckTarget()
	{
		if (target.GetComponent<Generic_NonPlayer> ().moving) {
			Chase (maxDistance);
		}
		else
			Idle (minDistance);
	}

	void Chase(int distance)
	{	
		//if target walks away, begin chase
		if (Vector3.Distance (target.GetComponent<Transform> ().position, this.transform.position) > distance) {
			agent.SetDestination (target.GetComponent<Transform> ().position);
			anim.SetBool ("isWalking", true);
		}
	}

	void Idle(int distance)
	{
		//if target is close, stop chasing
		if (Vector3.Distance (target.GetComponent<Transform> ().position, this.transform.position) < distance) {
			anim.SetBool ("isWalking", false);
			agent.SetDestination (transform.position);

		}
	}