Unity3d学习笔记(2)--一个太阳系的实现

  这是实现一个简单的太阳系，包括太阳和八大行星和月亮。

这个程序采用MVC结构

 

总共有6个cs文件：

       SSDirector.cs:控制场景的切换，指明哪个是当前场景

       FristController.cs：控制第一个场景的资源加载和配置

       roundsun.cs：挂载在太阳上的组件，使其它行星绕太阳转，月亮绕地球转和各天体的自转

       UserGUI.cs

       IUserAction.cs

       ISceneController.cs

因为时间问题，上面有些文件的功能还没有实现，但因为要满足MVC结构的问题，便于以后的扩展和修改，就把它们

加进了项目中。

FristController.cs

       这个文件主要是用来加载太阳系和以及为roundsun组件传递参数。

public void LoadResources() { GameObject solar_system = Instantiate<GameObject>( Resources.Load<GameObject>("prefabs/sun_shadow"), Vector3.zero, Quaternion.identity); GameObject sun = Instantiate<GameObject>( Resources.Load<GameObject>("prefabs/sun"), Vector3.zero, Quaternion.identity); solar_system.name = "sun_shadow"; sun.name = "sun"; GameObject[] body = new GameObject[body_num]; for (int i = 0; i < body_num; i++) { body[i] = GameObject.Find(body_name[i]); } Debug.Log("load solar_system ...\n"); roundsun com_sun = solar_system.GetComponent("roundsun") as roundsun; com_sun.sun_shadow = body[0].transform; com_sun.mercury = body[1].transform; com_sun.venus = body[2].transform; com_sun.earth_shadow = body[3].transform; com_sun.moon = body[4].transform; com_sun.mars = body[5].transform; com_sun.jupiter = body[6].transform; com_sun.saturn = body[7].transform; com_sun.uranus = body[8].transform; com_sun.neptune = body[9].transform; com_sun.sun = body[10].transform; com_sun.earth = body[11].transform; }

roundsun.cs

 

  设置各天体的初始位置：

void Start () { sun.position = Vector3.zero; sun_shadow.position = sun.position; mercury.position = new Vector3(0.7f, 0, 0); venus.position = new Vector3(1.2f, 0, 0); earth.position = new Vector3(2.2f, 0, 0); earth_shadow.position = earth.position; moon.position = new Vector3(2.7f, 0, 0); mars.position = new Vector3(3.3f, 0, 0); jupiter.position = new Vector3(4.5f, 0, 0); saturn.position = new Vector3(6.0f, 0, 0); uranus.position = new Vector3(7.0f, 0, 0); neptune.position = new Vector3(8.0f, 0, 0); } 设置各天体的公转和自转：

void Update () { mercury.RotateAround(sun_shadow.position, new Vector3(1, 7f, 0), 240 * Time.deltaTime); venus.RotateAround(sun_shadow.position, new Vector3(1, 12f, 0), 70 * Time.deltaTime); earth.RotateAround(sun_shadow.position, Vector3.up, 60* Time.deltaTime); earth_shadow.position = earth.position; mars.RotateAround(sun_shadow.position, new Vector3(1, 16f,0), 30 * Time.deltaTime); jupiter.RotateAround(sun_shadow.position, new Vector3(1, 18f, 0), 20 * Time.deltaTime); saturn.RotateAround(sun_shadow.position, new Vector3(1, 15f, 0), 15 * Time.deltaTime); uranus.RotateAround(sun_shadow.position, new Vector3(1, 20f, 0), 10 * Time.deltaTime); neptune.RotateAround(sun_shadow.position, new Vector3(1, 17f, 0), 5 * Time.deltaTime); moon.transform.RotateAround(earth_shadow.position, Vector3.up, 359 * Time.deltaTime); sun.Rotate(Vector3.up * 10 * Time.deltaTime); mercury.Rotate(Vector3.up * 10 * Time.deltaTime); venus.Rotate(Vector3.down * 5 * Time.deltaTime); earth.Rotate(Vector3.up * 30 * Time.deltaTime); mars.Rotate(Vector3.up * 30 * Time.deltaTime); jupiter.Rotate(Vector3.up * 65 * Time.deltaTime); saturn.Rotate(Vector3.up * 67 * Time.deltaTime); uranus.Rotate(Vector3.up * 50 * Time.deltaTime); neptune.Rotate(Vector3.up * 45 * Time.deltaTime); moon.Rotate(Vector3.up * 15 * Time.deltaTime); } 写博客时发现天体的自转是不是应该挂在各天体上比较符合