Added an event to search for servers.

Client now broadcasts a serverlistrequest.
An active server will then answer the request and send info about the server.
The client saves this data to a list and presents it to the user.

include/Engine/Network/Server.h

@@ -33,7 +33,7 @@ private:
     // Network channels
     TCPServer m_Reliable;
     UDPServer m_Unreliable;
-    UDPClient m_Heartbeat;
+    UDPServer m_ServerlistRequest;
     // dont forget to set these in the childrens receive logic
     boost::asio::ip::address m_Address;
     int m_Port = 27666;
@@ -46,13 +46,11 @@ private:
     // time for previouse message
     std::clock_t previousePingMessage = std::clock();
     std::clock_t previousSnapshotMessage = std::clock();
-    std::clock_t previousHeartbeat = std::clock();
     std::clock_t timOutTimer = std::clock();
 
     // How often we send messages (milliseconds)
     float pingIntervalMs;
     float snapshotInterval;
-    float heartbeatInterval = 5000;
     int checkTimeOutInterval = 100;
     int m_NextPlayerID = 0;
     std::vector<Events::InputCommand> m_InputCommandsToBroadcast;
@@ -71,7 +69,6 @@ private:
     void addChildrenToPacket(Packet& packet, EntityID entityID);
     void addInputCommandsToPacket(Packet& packet);
     void sendPing();
-    void sendHeartBeat();
     void checkForTimeOuts();
     void disconnect(PlayerID playerID);
     void parseMessageType(Packet& packet);
@@ -86,6 +83,7 @@ private:
     void parseUDPConnect(Packet & packet);
     void parseTCPConnect(Packet & packet);
     void parseDisconnect();
+    void parseServerlistRequest(boost::asio::ip::udp::endpoint endpoint);
     bool shouldSendToClient(EntityWrapper childEntity);
 
     // Debug event