繞一圈

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{

Vector3[] T = new Vector3[4];
// Use this for initialization
void Start()
{
T[0] = new Vector3(100f, -6.161964e-17f, 120f);
T[1] = new Vector3(-100f, -6.161964e-17f, 120f);
T[2] = new Vector3(-100f, -6.161964e-17f, -130f);
T[3] = new Vector3(100f, -6.161964e-17f, -130f);

}
int aa = 0;

// Update is called once per frame
void Update()
{
transform.position = Vector3.MoveTowards(transform.position, T[aa], 10 * Time.deltaTime);
if (transform.position == T[aa])
aa = (aa + 1) % 4;


}
}


using UnityEngine;
using System.Collections;

public class TransformFunctions : MonoBehaviour
{
public float moveSpeed = 10f;
public float turnSpeed = 50f;


void Update ()
{
if(Input.GetKey(KeyCode.UpArrow))
transform.Translate(Vector3.forward * moveSpeed * Time.deltaTime);

if(Input.GetKey(KeyCode.DownArrow))
transform.Translate(-Vector3.forward * moveSpeed * Time.deltaTime);

if(Input.GetKey(KeyCode.LeftArrow))
transform.Rotate(Vector3.up, -turnSpeed * Time.deltaTime);

if(Input.GetKey(KeyCode.RightArrow))
transform.Rotate(Vector3.up, turnSpeed * Time.deltaTime);
}
}