Let us start here, from square one. No, from Zero!

games/game.cpp

@@ -0,0 +1,22 @@
+#include "game.h"
+#include "util/logging.h"
+
+games::Game::Game(std::string name) {
+    this->name = name;
+}
+
+void games::Game::attach() {
+    log_info("game", "attach: {}", name);
+}
+
+void games::Game::pre_attach() {
+    log_info("game", "pre_attach: {}", name);
+}
+
+void games::Game::post_attach() {
+    log_info("game", "post_attach: {}", name);
+}
+
+void games::Game::detach() {
+    log_info("game", "detach: {}", name);
+}