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

games/bc/io.h

@@ -0,0 +1,27 @@
+#pragma once
+
+#include <vector>
+
+#include "cfg/api.h"
+
+namespace games::bc {
+    namespace Buttons {
+        enum {
+            Service,
+            Test,
+            Up,
+            Down,
+            Left,
+            Right,
+            JoystickButton,
+            Trigger1,
+            Trigger2,
+            Button1,
+            Button2,
+            Button3,
+            Button4,
+        };
+    }
+
+    std::vector<Button> &get_buttons();
+}