UGUI制作Boss固定血条

Boss 血条的特点： 1.血条的位置是静态的，不会跟随Boss 改变位置； 2.Boss 的血条一般是“分层”，且有数字标示剩余的血量层数； 3.Boss 的血条也有不分层的，关键在于游戏的策划设定。 最终效果（共3层血）： [

](http://www.wjgbaby.com/wp-content/uploads/2018/02/18022102-300x284.gif)

Boss管理器脚本：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class BossManager : MonoBehaviour {

private GameObject prefab\_Boss;
private GameObject prefab\_BossHp;

private Transform canvas\_Transform;

void Start () {
prefab\_Boss = Resources.Load<GameObject>("Boss");
prefab\_BossHp = Resources.Load<GameObject>("BossHpPanel");
canvas\_Transform = GameObject.Find("Canvas").GetComponent<Transform>();
}

void Update () {
if(Input.GetKeyDown(KeyCode.M))
    {
        GameObject.Instantiate<GameObject>(prefab\_Boss);
        GameObject.Instantiate<GameObject>(prefab\_BossHp, canvas\_Transform);
    }
}

}

Boss血量脚本：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class BossHP : MonoBehaviour {

private Transform m\_Transform;

private Image blood\_0;
private Image blood\_1;
private Image blood\_2;
private Text blood\_Count;

private List<Image> bloodLists = new List<Image>();

private int bossHp = 3000;      //Boss总血量.
private float bloodHp;          //单层血条的血量.
private int currentIndex;       //当前血条的索引.

void Start () {
    m\_Transform = gameObject.GetComponent<Transform>();

    blood\_0 = m\_Transform.Find("Blood\_0").GetComponent<Image>();
    blood\_1 = m\_Transform.Find("Blood\_1").GetComponent<Image>();
    blood\_2 = m\_Transform.Find("Blood\_2").GetComponent<Image>();
    blood\_Count = m\_Transform.Find("BossHP\_BG/Text").GetComponent<Text>();

    bloodLists.Add(blood\_0);
    bloodLists.Add(blood\_1);
    bloodLists.Add(blood\_2);

    bloodHp = bossHp / 3;
}

void Update () {
    if(Input.GetKeyDown(KeyCode.K))
        {
            UpdateUI(Random.Range(50, 200));
        }
}

private void UpdateUI(int v)
{
    //死亡判断.
    if(currentIndex == 2 && bloodHp <= v)
    {
        bloodLists\[currentIndex\].fillAmount = 0;
        Debug.Log("Boss已经死亡...");
        return;
    }

    //多层血条伤害表示.
    if (bloodHp <= v)
    {
        bloodLists\[currentIndex\].fillAmount = 0;
        float hp = v - bloodHp;
        bloodHp = 1000;
        bloodHp -= hp;
        currentIndex++;
        blood\_Count.text = "x" + (3 - currentIndex);

        bloodLists\[currentIndex\].fillAmount = bloodHp / 1000;
    }

    //单层血条伤害表示.
    bloodHp -= v;
    bloodLists\[currentIndex\].fillAmount = bloodHp / 1000;
}

}