首先搭建好太阳系以及飞机的场景

需要用到3个脚本

1.控制飞机移动旋转

2.控制摄像机LookAt朝向飞机和差值平滑跟踪飞机

3.控制各个星球自转以及围绕太阳旋转（rotate()和RotateAround()）

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1.控制飞机移动旋转的脚本

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class MovePlan : MonoBehaviour
{
    // 这个脚本是用户用WASD键盘控制飞机移动

    public float MoveSpeed = 0.5f;
    public float RotateSpeed = 2f;
    float mOUSESPEED;

    void Update()
    {

        if (Input.GetKey(KeyCode.W))
        {
            this.transform.Translate(new Vector3(0, 0, 1 * MoveSpeed * Time.deltaTime));
        }
        if (Input.GetKey(KeyCode.S))
        {
            this.transform.Translate(new Vector3(0, 0, -1 * MoveSpeed * Time.deltaTime));
        }
        if (Input.GetKey(KeyCode.A))
        {
            this.transform.Translate(new Vector3(-1 * MoveSpeed * Time.deltaTime,0, 0 ));
        }
        if (Input.GetKey(KeyCode.D))
        {
            this.transform.Translate(new Vector3(1 * MoveSpeed * Time.deltaTime, 0, 0));
        }
        //控制物体旋转
        mOUSESPEED = Input.GetAxis("Mouse X");
        this.transform.Rotate(new Vector3(0, mOUSESPEED * RotateSpeed*Time.deltaTime, 0));
    }
}

 

 2.控制摄像机LookAt朝向飞机和差值平滑跟踪飞机 的脚本

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class ControlCamera : MonoBehaviour
{
    // 这个脚本是用来让摄像机跟踪目标，并且一直看向目标

    public Transform onetarget;//这是飞机的变换组件
    public GameObject OnePoint;
    public float Movespeed = 1f;
    
    void Update()
    {           

        this.transform.position = Vector3.Lerp(this.transform.position, OnePoint.transform.position, Movespeed * Time.deltaTime);

        this.transform.LookAt(onetarget);
    }

}

使用方法：

分别挂在到摄像机和飞机上