Method SetCursorLock

Source/Engine/Engine/Screen.cpp:122–181

}

void Screen::SetCursorLock(CursorLockMode mode)
{
#if USE_EDITOR
    const auto win = Editor::Managed->GetGameWindow(true);
    Rectangle bounds(Editor::Managed->GameViewportToScreen(Float2::Zero), Editor::Managed->GetGameWindowSize());
    if (win)
    {
        bounds = Rectangle(win->ScreenToClient(bounds.GetTopLeft()), bounds.Size);

        // Don't change lock mode in play mode when viewport doesn't have focus
        if (mode != CursorLockMode::None && Editor::IsPlayMode && !Engine::HasGameViewportFocus())
        {
            PendingCursorLock = mode;
            return;
        }
        PendingCursorLock = CursorLockMode::None;
    }
#else
    const auto win = Engine::MainWindow;
    Rectangle bounds = Rectangle::Empty;
    if (win)
        bounds.Size = win->GetClientSize();

    // Don't change lock mode when window is not focused
    if (mode != CursorLockMode::None && win && !win->IsFocused())
    {
        PendingCursorLock = mode;
        return;
    }
    PendingCursorLock = CursorLockMode::None;
#endif
    if (win)
    {
        bool inRelativeMode = Input::Mouse && Input::Mouse->IsRelative();
        if (mode == CursorLockMode::Clipped)
            win->StartClippingCursor(bounds);
#if PLATFORM_SDL
        else if (mode == CursorLockMode::Locked)
        {
            // Use mouse clip region to restrict the cursor in one spot
            win->StartClippingCursor(Rectangle(bounds.GetCenter(), Float2(1, 1)));
        }
        else if (CursorLock == CursorLockMode::Locked || CursorLock == CursorLockMode::Clipped)
            win->EndClippingCursor();
#else
        else if (CursorLock == CursorLockMode::Clipped)
            win->EndClippingCursor();
#endif

        if (Input::Mouse)
        {
            // Enable relative mode when cursor is restricted
            if (mode != CursorLockMode::None)
                Input::Mouse->SetRelativeMode(true, win);
            else if (mode == CursorLockMode::None && inRelativeMode)
                Input::Mouse->SetRelativeMode(false, win);
        }
    }