血条进度条制作方法

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 () {
 
	}
}

　　http://blog.csdn.net/zhulinpptor/article/details/5867130