How to use Workerman to implement the real-time map loading function of PHP and Unity3D

How to use Workerman to implement the real-time map loading function of PHP and Unity3D

Introduction:
In game development, the real-time map loading function is a very common and important functional requirement. PHP and Unity3D are commonly used technologies in game development. This article will introduce how to use Workerman to implement the real-time map loading function of PHP and Unity3D, and provide corresponding code examples.

1. Introduction to Workerman
Workerman is an open source, high-performance PHP Socket framework that allows PHP to easily implement long connections and real-time push functions. With the help of Workerman, we can combine PHP and Unity3D to achieve real-time map loading function.

2. PHP server implementation

1. First, install the extensions required by Workerman. We can use Composer to install Workerman, execute the following command to create a composer.json file:

   {
    "require": {
        "workerman/workerman": "~3.5"
    }
   }

   and then run composer install to install the dependencies.

2. Create a PHP file named map_server.php. In this file, we need to introduce Workerman and create a Worker object:

   <?php
   require_once __DIR__ . '/vendor/autoload.php';
   use WorkermanWorker;
   
   // 创建一个Worker监听2345端口，协议为websocket
   $worker = new Worker('websocket://0.0.0.0:2345');
   
   //启动4个进程对外提供服务
   $worker->count = 4;
   
   // 当客户端与服务端建立连接时执行
   $worker->onConnect = function($connection){
    echo "新的连接建立
   ";
   };
   
   // 当客户端向服务端发送消息时执行
   $worker->onMessage = function($connection, $data){
    // 获取Unity3D发送的请求数据
    $request = json_decode($data, true);
    
    // 根据请求数据处理逻辑，生成地图数据
    $mapData = generateMap($request['mapId']);
    
    // 将地图数据发送给Unity3D客户端
    $connection->send(json_encode($mapData));
   };
   
   // 启动服务
   Worker::runAll();
   ?>

3. In map_server.php, we need to define a generateMap function to generate map data based on the map ID logic. Here we simplify the process and directly generate a random number as map data:

   function generateMap($mapId){
    // 这里假设地图数据是一个随机数
    $mapData = rand(1, 100);
    return $mapData;
   }

4. Unity3D client implementation

1. First, in Unity3D Create a new scene and create an empty object named MapLoader. Then add a script MapLoader.cs for MapLoader. The code is as follows:

   using System.Collections;
   using System.Collections.Generic;
   using UnityEngine;
   using BestHTTP.WebSocket;
   using BestHTTP.WebSocket.Frames;
   
   public class MapLoader : MonoBehaviour
   {
    // WebSocket服务端地址
    private static string serverUrl = "ws://127.0.0.1:2345/map_server.php";
   
    // 地图ID
    public int mapId;
   
    // Start is called before the first frame update
    void Start()
    {
        // 请求地图数据
        RequestMapData();
    }
   
    // 请求地图数据
    void RequestMapData()
    {
        // 创建WebSocket对象
        WebSocket webSocket = new WebSocket(new System.Uri(serverUrl));
   
        // 连接成功回调
        webSocket.OnOpen += OnWebSocketOpen;
   
        // 接收到数据回调
        webSocket.OnMessage += OnWebSocketMessage;
   
        // 断开连接回调
        webSocket.OnClosed += OnWebSocketClose;
   
        // 开始连接
        webSocket.Open();
    }
   
    // WebSocket连接成功回调
    void OnWebSocketOpen(WebSocket webSocket)
    {
        Debug.Log("WebSocket连接成功");
        
        // 构造请求数据
        Dictionary<string, object> requestData = new Dictionary<string, object>();
        requestData.Add("mapId", mapId);
   
        // 发送请求数据
        webSocket.Send("{"mapId":" + mapId + "}");
    }
   
    // WebSocket接收到数据回调
    void OnWebSocketMessage(WebSocket webSocket, string message)
    {
        Debug.Log("接收到地图数据：" + message);
   
        // 解析地图数据
        int mapData = int.Parse(message);
   
        // TODO: 根据地图数据加载地图
    }
   
    // WebSocket断开连接回调
    void OnWebSocketClose(WebSocket webSocket, UInt16 code, string message)
    {
        Debug.LogWarning("WebSocket连接断开");
    }
   }

5. Use Workerman for real-time map loading

1. Run the map_server.php file and start the PHP WebSocket service.
2. In Unity3D, add the logic of loading map data into the OnWebSocketMessage function, and load the map based on the map data.

So far, we have completed using Workerman to implement the real-time map loading function of PHP and Unity3D. Through Workerman, we can easily realize real-time communication between PHP and Unity3D, and flexibly handle real-time needs in various game development.

Conclusion:
This article introduces how to use Workerman to implement the real-time map loading function of PHP and Unity3D, and provides corresponding code examples. I hope this article can be helpful to the implementation of real-time map loading function in game development.

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