unity3D创建路径点，进行物体移动（塔防游戏）

public class way_point : MonoBehaviour {

//定义一个静态位置数组
public static Transform[] positions;

void Awake()
{
    positions = new Transform[transform.childCount];

    for (int i = 0; i < positions.Length; i++)
    {
        positions[i] = transform.GetChild(i);

    }
}

}

public class enemy_move : MonoBehaviour {

public int movespeed = 5;
public Transform[] positions;
private int index = 0;

void Start () {
    positions = way_point.positions;
}

// Update is called once per frame
void Update () {
    Move();
}
void Move()
{
    if (index > positions.Length - 1)
    {
        return;
    }

    //将得到的方向化为单位1
    transform.Translate((positions[index].position - transform.position).normalized * Time.deltaTime * movespeed);

    if (Vector3.Distance(positions[index].position,transform.position) < 0.2f)
    {
        index++;
    }
}

}