using UnityEngine;

 using System.Collections;

 public class CursorController : MonoBehaviour

 {

     /// <summary>

     /// 一般鼠标样式

     /// </summary>

     public Texture2D cursorMouseNormol;

     /// <summary>

     /// 单击鼠标样式

     /// </summary>

     public Texture2D cursorMouseClick;

     public float cursorWidth;

     public float cursorHeight;

     /// <summary>

     /// 是否按下鼠标

     /// </summary>

     private bool isMouseClick = false;

     // Use this for initialization

     void Start()

     {

         //关闭系统默认鼠标显示

         Screen.showCursor = false;

         cursorWidth = cursorMouseNormol.width;

         cursorHeight = cursorMouseNormol.height;

     }

     // Update is called once per frame

     void Update()

     {

         //鼠标左键单击切换鼠标样式

         if (Input.GetMouseButtonDown())

         {

             isMouseClick = true;

         }

         else if (Input.GetMouseButtonUp())

         {

             isMouseClick = false;

         }

     }

     void OnGUI()

     {

         if (isMouseClick)

         {

             GUI.DrawTexture(new Rect(Input.mousePosition.x - cursorWidth / 2f, Screen.height - Input.mousePosition.y - cursorHeight / 2f, cursorWidth, cursorHeight), cursorMouseClick);

         }

         else

         {

             GUI.DrawTexture(new Rect(Input.mousePosition.x - cursorWidth / 2f, Screen.height - Input.mousePosition.y - cursorHeight / 2f, cursorWidth, cursorHeight), cursorMouseNormol);

         }

     }

 }