血条或进度条的效果

用Unity做血条或进度条真的很方便，GUI里scrollbar就可以轻松实现，再加上lerp一个血条或进度条就完成了。

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using UnityEngine; using System.Collections;      public class BloodBarTest : MonoBehaviour {          public GUISkin theSkin;     public float bloodValue = 0.0f;     private float tmpValue;     private Rect rctBloodBar;     private Rect rctUpButton;     private Rect rctDownButton;     private bool onoff;          // Use this for initialization     void Start () {         rctBloodBar = new Rect (20,20,20,200);         rctUpButton = new Rect (50,20,40,20);         rctDownButton = new Rect (50,50,40,20);         tmpValue = bloodValue;     }          void OnGUI (){         GUI.skin = theSkin;         if (GUI.Button (rctUpButton,"加血")){             tmpValue = -1.0f;         }         if (GUI.Button (rctDownButton,"减血")){             tmpValue += 0.1f;         }         if (bloodValue > 0.0f) tmpValue = 0.0f;         if (bloodValue < -1.0f) tmpValue = -1.0f;         bloodValue = Mathf.Lerp(bloodValue,tmpValue,0.05f);         //~ Debug.Log (bloodValue + " " + tmpValue);         GUI.VerticalScrollbar(rctBloodBar, 1.0f, bloodValue,0.0f, 1.0f,GUI.skin.GetStyle("verticalScrollbar"));     }          // Update is called once per frame     void Update () {          } }