How PHP and Unity3D use Workerman to implement real-time ranking function

How PHP and Unity3D use Workerman to implement real-time ranking function

With the rise of online games, the ranking function has become the focus of many game developers. Real-time rankings allow players to compete and compare, making the game more interesting and challenging. This article will introduce how to use PHP, Unity3D and Workerman framework to implement the real-time ranking function.

1. Understand the Workerman framework

Workerman is a high-performance asynchronous event-driven PHP framework developed in PHP. It adopts a multi-process and non-blocking I/O model, has a low memory footprint and high concurrent connection processing capabilities. Workerman's features make it ideal for building real-time applications, such as game servers.

2. Build the server side

1. Install the Workerman framework

First, we need to install the Workerman framework on the server side. You can install it through the following command:

composer require workerman/workerman

2. Writing a ranking server script

Create a PHP script on the server, such as rank_server.php. In this script, we need to initialize Workerman, define a ranking array, and provide some interfaces for the Unity3D client to call.

The following is a simple sample code:

<?php
require_once __DIR__.'/vendor/autoload.php';

use WorkermanWorker;

$rankList = array();

$worker = new Worker("websocket://0.0.0.0:2345");

$worker->count = 4;

$worker->onWorkerStart = function($worker) {
    global $rankList;
    echo "Worker started!
";
};

$worker->onMessage = function($connection, $data) {
    global $rankList;
    $request = json_decode($data, true);

    switch($request['action']) {
        case 'update_rank':
            $rankList[$request['username']] = $request['score'];
            break;
        case 'get_rank':
            krsort($rankList);
            $rankList = array_slice($rankList, 0, 10);
            $connection->send(json_encode($rankList));
            break;
        default:
            break;
    }
};

Worker::runAll();

The above code creates a Worker instance and listens to port 2345. In the onWorkerStart callback function, we initialize the ranking array. In the onMessage callback function, the corresponding processing is performed according to the received request: if it is a request to update the ranking list, the ranking array is updated; if it is a request to obtain the ranking list, the ranking array is sent to the client. Note that when updating the leaderboard, we use $rankList[$request['username']] = $request['score'] to store the user score.

3. Write the client

1. Create a WebSocket client in Unity3D

Use WebSocket in Unity3D to connect to the server, we can use a third party Plugins such as WebSocket-Sharp. First, you need to import the WebSocket-Sharp plugin in the Unity3D editor. Then reference the WebSocket namespace in your code.

using WebSocketSharp;

2. Write the ranking client code

The following is a simple example code for the Unity3D ranking client:

using System.Collections;
using UnityEngine;
using WebSocketSharp;

public class RankClient : MonoBehaviour
{
    private WebSocket ws;
    private string serverUrl = "ws://127.0.0.1:2345";

    void Start()
    {
        ws = new WebSocket(serverUrl);
        ws.OnOpen += OnOpen;
        ws.OnMessage += OnMessage;
        ws.Connect();
    }

    void OnOpen(object sender, System.EventArgs e)
    {
        Debug.Log("WebSocket connected!");
    }

    void OnMessage(object sender, MessageEventArgs e)
    {
        string msg = e.Data;

        // 接收到服务器发送的排行榜数据，进行处理
        // ...
    }

    public void UpdateRank(string username, int score)
    {
        // 向服务器发送更新排行榜请求
        string json = "{"action":"update_rank", "username":"" + username + "", "score":" + score + "}";
        ws.Send(json);
    }

    public void GetRank()
    {
        // 向服务器发送获取排行榜请求
        string json = "{"action":"get_rank"}";
        ws.Send(json);
    }
}

The above code is in the Start function Created a WebSocket instance and connected to the server. In the OnOpen callback function, we can handle the connection success. In the OnMessage callback function, we receive the ranking data sent by the server and process it accordingly. In the UpdateRank and GetRank functions, we send requests to the server to update the rankings and get the rankings.

4. Test run

1. Start the server

Execute the following command in the command line to start the server:

php rank_server.php start

2. Test in Unity3D

In the Unity3D editor, create a ranking scene and add the RankClient script to the scene. In a script, you can test this by calling the UpdateRank and GetRank functions. Rankings can be updated based on game logic and the latest ranking data can be obtained.

Through the combination of PHP and Unity3D with the Workerman framework, we can easily implement the real-time ranking function. Workerman's high performance and asynchronous event-driven features allow us to quickly respond and handle a large number of user requests and provide a better gaming experience. Hope this article is helpful to you!

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