Unity效果实现：任务系统和人物血条

任务系统和血条是许多RPG游戏中必不可少的元素之一，由于制作这两个都要用UI系统，所以放在一起来讲。

1.血条

• 血条我们可以用素材中的图片制作，扣血时根据当前血量和最大血量的比值来排
• 将脚本挂到画布上

2.任务系统

• 我们需要一个任务管理类来管理任务的添加，接受与取消
• 任务内容这里采用XML语句来编写，代码如下

  using System.Collections.Generic;
  using System.Xml;
  using UnityEngine;
  public class QuestData
  {
      public int id;
      public string name;
      public int enemyid;
      public int count;
      public int currentCount;
      public int money;
  }
  
  public class QuestionDtaManager : MonoBehaviour
  {
      private static QuestionDtaManager instance;
      //对外
      public static QuestionDtaManager Instance
      {
          get
          {
              if(instance==null)
              {
                  instance = new QuestionDtaManager();
              }
              return instance;
          }
      }
      //任务集合
      public Dictionary<int, QuestData> QuestDic = new Dictionary<int, QuestData>();
  
      private QuestionDtaManager()
      {
          XmlDocument doc = new XmlDocument();
          doc.Load(Application.dataPath+"/XML/quest.xml");
          //根元素
          XmlElement rootEle = doc.LastChild as XmlElement;
          foreach(XmlElement questELE in rootEle)
          {
              QuestData qd = new QuestData();
              //设置任务id
              qd.id = int.Parse(questELE.GetElementsByTagName("id")[0].InnerText);
              //设置任务名称
              qd.name = questELE.GetElementsByTagName("name")[0].InnerText;
              //设置敌人id
              qd.enemyid = int.Parse(questELE.GetElementsByTagName("enemyid")[0].InnerText);
              //需要攻击的敌人个数
              qd.count = int.Parse(questELE.GetElementsByTagName("count")[0].InnerText);
              //添加到任务id
              QuestDic.Add(qd.id, qd);
          }
      }
  }
  

• 任务管理类的脚本如下

  using System.Collections;
  using System.Collections.Generic;
  using UnityEngine;
  
  public class QuestManager
  {
      private static QuestManager instance;
      public static QuestManager Instance
      {
          get
          {
              if (instance == null)
                  instance = new QuestManager();
              return instance;
          }
      }
      //任务列表
      private List<QuestData> QuestsList = new List<QuestData>();
  
      //是否接受任务
      public bool HasQuest(int id)
      {
          foreach(QuestData qd in QuestsList)
          {
              if(qd.id==id)
              {
                  return true;
              }
          }
          return false;
      }
  
      //添加任务
      public void AddQuest(int id)
      {
          if(!HasQuest(id))
          {
              QuestsList.Add(QuestionDtaManager.Instance.QuestDic[id]);
          }
      }
  
      public void AddEnemy(int enemyid)
      {
          for(int i=0;i<QuestsList.Count;i++)
          {
              QuestData qd = QuestsList[i];
              //遍历任务中是否有该击杀敌人任务完成数量
              qd.currentCount++;
              if(qd.currentCount>=qd.count)
              {
                  Debug.Log("任务完成，这里可以制作任务奖励，光效等内容");
                  //删除任务
                  qd.currentCount = 0;
                  QuestsList.Remove(qd);
                  //这里让主角显示一个光效
                  GameObject effect = Resources.Load<GameObject>("fx_hr_arthur_pskill_03_2");
                  //获取主角
                  Transform player = GameObject.FindWithTag("Player").transform;
                  //创建光效
                  GameObject.Instantiate(effect, player.position, player.rotation);
              }
          }
      }
  }

3.UI部分

代码如下

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

public class UIManager : MonoBehaviour
{
    public static UIManager Instance;
    private Image hpBar;
    private PlayerControl player;
    private Image dialog;
    private int questid;
    private void Awake()
    {
        //获取单例
        Instance = this;
        hpBar = transform.Find("Head").Find("HpBar").GetComponent<Image>();
        player = GameObject.FindWithTag("Player").GetComponent<PlayerControl>();
        //获取对话框
        dialog = transform.Find("Dialog").GetComponent<Image>();
        //隐藏对话框
        dialog.gameObject.SetActive(false);
    }

    private void Update()
    {
        hpBar.fillAmount = (float)player.hp / player.MaxHp;
    }

    public void Show(string name,string content,int id=-1)
    {
        //呼出鼠标指针
        Cursor.lockState = CursorLockMode.None;
        dialog.gameObject.SetActive(true);
        dialog.transform.Find("NameText").GetComponent<Text>().text = name;
        questid = id;
        if(QuestManager.Instance.HasQuest(id))
        {
            dialog.transform.Find("ContentText").GetComponent<Text>().text = "你已经接受该任务了";
        }
        else
        {
            dialog.transform.Find("ContentText").GetComponent<Text>().text = content;
        }   
    }
    public void AcceptButtonClick()
    {
        //隐藏对话框
        dialog.gameObject.SetActive(false);
        //接受任务
        QuestManager.Instance.AddQuest(questid);
        Cursor.lockState = CursorLockMode.Locked;
    }

    public void CancelButtonClick()
    {
        dialog.gameObject.SetActive(false);
        Cursor.lockState = CursorLockMode.Locked;
    }
}