DiscoveryServer.hpp

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#pragma once
 
#include "SDL3_net/SDL_net.h"
 
#include <atomic>
#include <cstdint>
#include <functional>
#include <mutex>
#include <string>
#include <thread>
class DiscoveryServer
{
 
public:
    struct ServerInfo
    {
        std::string serverName;
        uint16_t gamePort;
        uint8_t currentPlayers;
        uint8_t maxPlayers;
        uint32_t globalServerId = 0;
 
        // other interesting things can go here
    };

    bool start(uint16_t port,
               const ServerInfo& serverInfo,
               std::function<uint8_t()> playerCountFn = nullptr,
               std::function<uint32_t()> globalServerIdFn = nullptr);
 
    void updateInfo(const ServerInfo& serverInfo);
 
    void stop();
 
private:
    void loop();
 
    NET_DatagramSocket* socket = nullptr;
 
    std::atomic<bool> shouldStop{false};
    std::thread broadcastThread;
 
    ServerInfo info;
    std::mutex infoMutex;
 
    std::function<uint8_t()> currentPlayersFn;
    std::function<uint32_t()> globalServerIdFn;
};