Beginning to create the placeholder classes

server/player_manager.hpp

@@ -0,0 +1,23 @@
+#ifndef PLAYERMANAGER_HPP_
+#define PLAYERMANAGER_HPP_
+
+#include <list>
+
+class PlayerManager {
+private:
+	PlayerManager() = default;
+	~PlayerManager() = default;
+	static PlayerManager instance;
+
+public:
+	static PlayerManager* GetInstance() { return &instance; }
+
+private:
+	struct PlayerEntry {
+		int index;
+	};
+
+	std::list<PlayerEntry> list;
+};
+
+#endif