用unity和php实现一个排行榜功能（unity客户端篇）

注：此文章需配合以下文章一起使用
用unity和php实现一个排行榜功能（PHP服务端篇）

目前我用的版本是unity2020，unity2019，这份代码应该也适用

首先在unity里如图建一个排行榜panel

大致效果

，编辑器层级如下

rankItem是排行榜数据的预制体，

单条显示效果是这样

新建RankItem预制体的脚本，挂载RankItem预制体上，代码如下
RankItem.cs

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

//排行预制体类
public class RankItem : MonoBehaviour
{
    public Text indexText;
    public Text nameText;
    public Text scoreText;
   
	public void setItem(Score item)
	{
	    indexText.text = item.rankIndex.ToString();
	    nameText.text = item.name;
	    scoreText.text = item.score;   
	}
}

依次把预制体里对应的text拖进去

新建ScoreManager.cs并挂载到rankPanel上，代码如下

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

//得分管理类
public class ScoreManager : MonoBehaviour
{
	string baseUrl = "http://localhost/public";
    private string geturl = "";
    private string url = "http://localhost/public/add";//请求url
    public Text scoreText;
    public static ScoreManager instance;
   	public GameObject rankContent; //scrollview的内容
    public GameObject rankPanel; 
    public RankItem[] rankItems; //直接在编辑器里拖进去
   	public Button submitButton; //提交panel的提交按钮
    public InputField nameInputField; //用户输入名字的input框
    
    void Awake()
    {

        //Check if instance already exists
        if (instance == null)

            //if not, set instance to this
            instance = this;

        //If instance already exists and it's not this:
        else if (instance != this)

            //Then destroy this. This enforces our singleton pattern, meaning there can only ever be one instance of a GameManager.
            Destroy(gameObject);

        //Sets this to not be destroyed when reloading scene

    }

    void Start()
    {
        geturl = baseUrl;
    }
}
   

   

ScoreManager里，start之后，添加获取排行榜数据的代码

//获取分数
public void getScore()
{
     rankPanel.SetActive(true);
     StartCoroutine(getScoreRequest());
}
 
//发送获取分数请求
IEnumerator getScoreRequest()
{
    WWWForm form = new WWWForm();
    string tmpurl = baseUrl + "/";
    UnityWebRequest www = UnityWebRequest.Get(tmpurl);
    yield return www.SendWebRequest();
    
    if (www.result != UnityWebRequest.Result.Success)
    {
    	//请求失败得到的内容
        Debug.Log(www.downloadHandler.text);
    }
    else
    {
        string json = www.downloadHandler.text;
        //把服务端篇返回的json，解析成为unity可用的List
        RequestResult res = JsonUtility.FromJson(json);
        int index = 0;
        foreach (var item in rankItems)
        {
            item.gameObject.SetActive(false);
        }

        int count = res.data.Count;
        for(int i = 0; i < count; i++)
        {
            Score a= res.data[i];
            a.rankIndex = (i + 1);
            rankItems[i].gameObject.SetActive(true);
            rankItems[i].setItem(a);
            index++;
        }
        
    }
}

这里用到了个自定义的解析返回结果的类RequestResult.cs，自己新建，内容如下

[Serializable]
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System;

public class RequestResult
{
    public int code;
    public List data;
	
	public string ToJson()
    {
       
        return JsonUtility.ToJson(this);
    }
}

每条得分记录的类Score.cs

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

[Serializable]
public class Score 
{
    public int id;
    public int rankIndex;
    public string name;
    public string score;
   

    public override string ToString()
    {
        return JsonUtility.ToJson(this);
    }
}

任意新建一个按钮，用于弹出rankPanel，事件挂上scoreManager的getscore。
在编辑器隐藏rankPanel
点击播放按钮，运行代码，此时，排行榜的数据已经可以正常读取到unity里了

一般情况下，会在玩家游戏失败时，弹出类似这种panel

ScoreManager.cs里新增代码

//提交分数
public void submitScore()
{
     StartCoroutine(SubmitScore());
}

//提交分数请求
IEnumerator SubmitScore()
{
    WWWForm form = new WWWForm();
    form.AddField("score", scoreText.text.ToString());
    form.AddField("name", nameInputField.text);

    string tmpurl = baseUrl+ "/addscore";
    UnityWebRequest www = UnityWebRequest.Post(tmpurl, form);
    yield return www.SendWebRequest();
    if (www.result != UnityWebRequest.Result.Success)
    {
        Debug.Log(www.downloadHandler.text);
    }
    else
    {

        Debug.Log("Form upload complete!");
    }
    submitButton.interactable = false;
 
 
    rankPanel.SetActive(true);
    getScore();
}

把提交按钮的事件选择为submitScore

编辑器运行游戏调试。
至此，排行榜功能已经完成，你可以根据需要自己调整、添加内容