using UnityEngine;
using System.Collections;

public class EnemyMovementScript : MonoBehaviour {

    public float radius = 10f;
    public float speed = 1f;
    Vector3 offset;

    void Start ()
    {
        offset = transform.position;
    }
	
	void Update ()
    {
        transform.position = new Vector3(
                (radius * Mathf.Cos(Time.time * speed)) + offset.x,
                (radius * Mathf.Sin(Time.time * speed)) + offset.y,
                offset.z);
    }
}