add StateMachine

include/server/ServerState.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include <server/Server.h>
+#include <td/misc/SlotGuard.h>
+
+namespace td {
+namespace server {
+
+class ServerState : public Server::State, private utils::SlotGuard {
+  public:
+	virtual void HandlePacket(PlayerID a_Id, const protocol::PacketBase& a_Packet) = 0;
+	virtual void Update(float a_Delta) = 0;
+
+	ServerState(Server& a_Server);
+	virtual ~ServerState();
+
+  protected:
+	void SendPacket(PlayerID a_Id, const protocol::PacketBase& a_Packet);
+	void BroadcastPacket(const protocol::PacketBase& a_Packet);
+};
+
+}  // namespace server
+}  // namespace td