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#pragma once
#include <queue>
#include <map>
#include <thread>
#include <mutex>
#include <condition_variable>
#include <chrono>
#include <variant>
#include <functional>
#include "Vector.hpp"
#include "Packet.hpp"
enum class EventType {
Echo,
ChunkChanged,
ConnectToServer,
ConnectionSuccessfull,
GlobalAppState,
Disconnect,
SendPacket,
ReceivePacket,
};
struct EchoData {
std::chrono::time_point<std::chrono::high_resolution_clock> time;
};
struct ChunkChangedData {
Vector chunkPosition;
};
struct ConnectToServerData {
std::string address;
unsigned short port;
};
struct ConnectionSuccessfullData {
};
enum class GlobalState {
InitialLoading,
MainMenu,
Loading,
InGame,
PauseMenu,
Exiting,
};
struct GlobalAppStateData {
GlobalState state;
};
struct DisconnectData {
};
struct SendPacketData {
std::shared_ptr<Packet> packet;
};
struct ReceivePacketData {
std::shared_ptr<Packet> packet;
};
using EventData = std::variant<EchoData, ChunkChangedData, ConnectToServerData, ConnectionSuccessfullData,
GlobalAppStateData, DisconnectData, SendPacketData, ReceivePacketData>;
struct Event {
EventType type;
EventData data;
};
class EventListener {
friend class EventAgregator;
using HandlerFunc = std::function<void(EventData)>;
std::map<EventType, HandlerFunc> handlers; //TODO: There must be more elegant solution than std::variant of all data
std::mutex eventsMutex;
std::queue<Event> events;
void PushEvent(Event event);
public:
EventListener();
~EventListener();
bool IsEventsQueueIsNotEmpty();
void RegisterHandler(EventType type, HandlerFunc handler);
void HandleEvent();
};
class EventAgregator {
friend EventListener;
EventAgregator() = default;
static std::queue<Event> eventsToHandle;
static std::mutex queueMutex;
static bool isStarted;
static std::vector<EventListener *> listeners;
static std::mutex listenersMutex;
static void EventHandlingLoop();
static void RegisterListener(EventListener &listener);
static void UnregisterListener(EventListener &listener);
public:
static void PushEvent(EventType type, EventData data);
};
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