Unity物体围绕圆周运动

⽤Unity开发游戏中，经常会有搜寻的功能，这时候我们需要⼀个放⼤镜的图标在那圆周运动。写了相关脚本直接挂载在要圆周运动的物体上即可：

using UnityEngine;

using System.Collections;

public class RoundAction : MonoBehaviour{

public float _radius_length; public float _angle_speed; private float temp_angle; private Vector3 _pos_new; public Vector3 _center_pos; public bool _round_its_center;

// Use this for initialization void Start() {

if (_round_its_center) {

_center_pos = transform.localPosition; } }

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

temp_angle += _angle_speed * Time.deltaTime; //

_pos_new.x = _center_pos.x + Mathf.Cos(temp_angle) * _radius_length; _pos_new.y = _center_pos.y + Mathf.Sin(temp_angle) * _radius_length; _pos_new.z = transform.localPosition.z; transform.localPosition = _pos_new; }}