Unity3d之个性化鼠标

代码实例：

 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);
         }
     }
 }

PS：屏幕坐标系：左上角为原点

鼠标坐标系：左下角为原点