Function ScrollMainViewport

src/window.cpp:2802–2809

const std::chrono::milliseconds TIME_BETWEEN_DOUBLE_CLICK(500); ///< Time between 2 left clicks before it becoming a double click.

static void ScrollMainViewport(int x, int y)
{
	if (_game_mode != GM_MENU && _game_mode != GM_BOOTSTRAP) {
		Window *w = GetMainWindow();
		w->viewport->dest_scrollpos_x += ScaleByZoom(x, w->viewport->zoom);
		w->viewport->dest_scrollpos_y += ScaleByZoom(y, w->viewport->zoom);
	}
}

/**
 * Describes all the different arrow key combinations the game allows