Function create

src/OpenLoco/src/ViewportManager.cpp:141–154

0x004CA2D0 * ax : x * eax >> 16 : y * bx : width * ebx >> 16 : height * cl : zoom * edx >> 14 : flags (bit 30 zoom related, bit 31 set if entityId used) * Optional one of 2 * 1. * ecx >> 16 : tile_z * dx : tile_x * edx >> 16 : tile_y * 2. * dx : entityId */

     * dx : entityId
     */
    Viewport* create(Window* window, int viewportIndex, Ui::Point origin, Ui::Size size, ZoomLevel zoom, EntityId entityId)
    {
        Viewport* viewport = initViewport(origin, size, zoom);

        if (viewport == nullptr)
        {
            return nullptr;
        }

        window->viewports[viewportIndex] = viewport;
        focusViewportOn(window, viewportIndex, entityId);

        return viewport;
    }

    /* 0x004CA2D0
     * ax : x