public class EnemyTerritory : MonoBehaviour
 {
         public BoxCollider territory;
         GameObject player;
         bool playerInTerritory;

         public GameObject enemy;
         BasicEnemy basicenemy;

         // Use this for initialization
         void Start ()
         {
             player = GameObject.FindGameObjectWithTag ("Player");
             basicenemy = enemy.GetComponent <BasicEnemy> ();
             playerInTerritory = false;
         }

         // Update is called once per frame
         void Update ()
         {
             if (playerInTerritory = true)
             {
                 basicenemy.MoveToPlayer ();
             }

             if (playerInTerritory = false)
             {
                 basicenemy.Rest ();
             }
         }

         void OnTriggerEnter (Collider other)
         {
             if (other.gameObject == player)
             {
                 playerInTerritory = true;
             }
         }

         void OnTriggerExit (Collider other)
         {
             if (other.gameObject == player)
             {
                     playerInTerritory = false;
             }
         }
 }

 public class BasicEnemy : MonoBehaviour
 {
         public Transform target;
         public float speed = 3f;
         public float attack1Range = 1f;
         public int attack1Damage = 1;
         public float timeBetweenAttacks;


         // Use this for initialization
         void Start ()
         {
             Rest ();
         }

         // Update is called once per frame
         void Update ()
         {

         }

         public void MoveToPlayer ()
         {
             //rotate to look at player
             transform.LookAt (target.position);
             transform.Rotate (new Vector3 (0, -90, 0), Space.Self);

             //move towards player
             if (Vector3.Distance (transform.position, target.position) > attack1Range)
             {
                     transform.Translate (new Vector3 (speed * Time.deltaTime, 0, 0));
             }
         }

         public void Rest ()
         {

         }
 }

//Monster moves towards player if inside territory, and attacks the player.