unity3d用鼠标拖动物体的一段代码

这是一段拖动物体的代码，比较简洁明了，对了解unity3d脚本概念有些帮助！在此加上注释分享！

02var mouseOverColor = Color.blue;//声明变量为蓝色

03private var originalColor : Color;//声明变量存储本来颜色

04function Start () {

05originalColor = renderer.sharedMaterial.color;//开始时得到物体本来着色

06}

07function OnMouseEnter () {

08renderer.material.color = mouseOverColor;//当鼠标滑过时改变物体颜色为蓝色

09}

10 

11function OnMouseExit () {

12renderer.material.color = originalColor;//当鼠标滑出时恢复物体本来颜色

13}

14 

15function OnMouseDown () {

16var screenSpace = Camera.main.WorldToScreenPoint(transform.position);//三维物体坐标转屏幕坐标

17//将鼠标屏幕坐标转为三维坐标，再算出物体位置与鼠标之间的距离

18var offset = transform.position - Camera.main.ScreenToWorldPoint(Vector3(Input.mousePosition.x, Input.mousePosition.y, screenSpace.z));

19print("down");

20while (Input.GetMouseButton(0))

21{

22//print("button0");

23var curScreenSpace = Vector3(Input.mousePosition.x, Input.mousePosition.y, screenSpace.z);

24var curPosition = Camera.main.ScreenToWorldPoint(curScreenSpace) + offset;

25transform.position = curPosition;

26yield;//这个很重要，循环执行

27}

28}

JS脚本格式……明天改成C#的试试