using UnityEngine;

 using System.Collections;

 public class xt : MonoBehaviour

 {

     //红色血条

     public Texture2D blood_red;

     //黑色血条

     public Texture2D blood_black;

     //当前生命值

     private int HP = ;

     void OnGUI()

     {

         if (GUILayout.RepeatButton("加血"))

         {

             //增加生命值

             if (HP < )

             {

                 HP++;

             }

         }

         if (GUILayout.RepeatButton("减血"))

         {

             //减少生命值

             if (HP > )

             {

                 HP--;

             }

         }

         //根据当前生命值计算红色血条显示的宽度

         int blood_width = blood_red.width * HP / ;

         //绘制黑色血条

         GUI.DrawTexture(new Rect(, , blood_black.width, blood_black.height), blood_black);

         //绘制红色血条

         GUI.DrawTexture(new Rect(, , blood_width, blood_red.height), blood_red);

     }

 }