Function ProcessMenuNavigation

src/Controller/Controller.cpp:1733–1840

// ==========================================================

static void ProcessMenuNavigation()
{
    if (IsInTransitionPeriod())
    {
        ClearMenuButtonStates();
        return;
    }

    const ULONGLONG currentTime = GetTickCount64();

    SDL_GamepadButton confirmButton = SDL_GAMEPAD_BUTTON_SOUTH;
    SDL_GamepadButton cancelButton = SDL_GAMEPAD_BUTTON_EAST;

    if (s_capabilities.style == GamepadStyle::Nintendo)
    {
        confirmButton = SDL_GAMEPAD_BUTTON_EAST;
        cancelButton = SDL_GAMEPAD_BUTTON_SOUTH;
    }

    const struct { SDL_GamepadButton button; int vkey; } menuNavigation[] =
    {
        { SDL_GAMEPAD_BUTTON_DPAD_UP,    VK_UP },
        { SDL_GAMEPAD_BUTTON_DPAD_DOWN,  VK_DOWN },
        { SDL_GAMEPAD_BUTTON_DPAD_LEFT,  VK_LEFT },
        { SDL_GAMEPAD_BUTTON_DPAD_RIGHT, VK_RIGHT },
        { confirmButton,                 VK_RETURN },
        { cancelButton,                  VK_ESCAPE },
    };

    for (int i = 0; i < 6; i++)
    {
        auto& btnState = g_Controller.menuButtons[i];
        bool pressed = false;

        if (i < 4) // D-Pad directions
        {
            bool dpadPressed = SDL_GetGamepadButton(s_pGamepad, menuNavigation[i].button);
            bool stickPressed = IsStickDirectionPressed(i);
            pressed = dpadPressed || stickPressed;

            // Repeat while held
            if (pressed && btnState.isPressed)
            {
                ULONGLONG elapsed = currentTime - btnState.pressStartTime;
                ULONGLONG sinceLast = currentTime - btnState.lastRepeatTime;

                if (elapsed > MENU_REPEAT_DELAY && sinceLast > MENU_REPEAT_RATE)
                {
                    g_Controller.simulatedKeyPressCount++;
                    PostMessage(g_State.hWnd, WM_KEYDOWN, menuNavigation[i].vkey, 0);
                    btnState.lastRepeatTime = currentTime;
                }
            }
        }
        else // Confirm/Cancel buttons
        {
            pressed = SDL_GetGamepadButton(s_pGamepad, menuNavigation[i].button);
        }