int m_screen_width;
    int m_screen_height;

// Default Screen Settings
// width, height, map, crt, stat, msg, tip, lbl
static int _screen_sizes[4][8] =
{
    // Default
    {1024, 700, 4, 15, 16, 14, 15, 14},
    // Eee PC 900+
    {1024, 600, 3, 14, 14, 12, 13, 12},
    // Small screen
    {800, 600, 3, 14, 11, 12, 13, 12},
    // Eee PC
    {800, 480, 3, 13, 12, 10, 13, 11}
};

    }
    {
        const SDL_VideoInfo* video_info = SDL_GetVideoInfo();
        m_screen_width = video_info->current_w;
        m_screen_height = video_info->current_h;

    if (Options.tile_full_screen)

    bool too_small = (m_screen_width < 1024 || m_screen_height < 800);
    if (Options.tile_full_screen == SCREENMODE_FULL
        || (Options.tile_full_screen == SCREENMODE_AUTO && too_small))
    {

    }

    m_windowsz.x = Options.tile_window_width;
    m_windowsz.y = Options.tile_window_height;

    if (Options.tile_window_width && Options.tile_window_height)
    {
        m_windowsz.x = Options.tile_window_width;
        m_windowsz.y = Options.tile_window_height;
    }
    else if (flags & SDL_FULLSCREEN)
    {
        // By default, fill the whole screen.
        m_windowsz.x = m_screen_width;
        m_windowsz.y = m_screen_height;
    }
    else
    {
        m_windowsz.x = std::max(800, m_screen_width - 100);
        m_windowsz.y = std::max(480, m_screen_height - 100);
    }

    // Find which set of _screen_sizes to use.
    int auto_size = 0;
    int num_screen_sizes = sizeof(_screen_sizes) / sizeof(_screen_sizes[0]);
    do
    {
        if (m_windowsz.x >= _screen_sizes[auto_size][0]
            && m_windowsz.y >= _screen_sizes[auto_size][1])
        {
            break;
        }
    } while (++auto_size < num_screen_sizes - 1);
    // Auto pick map and font sizes if option is zero.
#define AUTO(x,y) (x = (x) ? (x) : _screen_sizes[auto_size][(y)])
    AUTO(Options.tile_map_pixels, 2);
    AUTO(Options.tile_font_crt_size, 3);
    AUTO(Options.tile_font_stat_size, 4);
    AUTO(Options.tile_font_msg_size, 5);
    AUTO(Options.tile_font_tip_size, 6);
    AUTO(Options.tile_font_lbl_size, 7);
#undef AUTO

    ASSERT(dx > 0);
    ASSERT(dy > 0);

    ASSERT(pixsz > 0);

    tile_font_crt_size = 15;

    tile_font_crt_size = 0;

    tile_font_stat_size = 16;

    tile_font_stat_size = 0;

    tile_font_msg_size = 14;

    tile_font_msg_size = 0;

    tile_font_tip_size = 15;

    tile_font_tip_size = 0;

    tile_font_lbl_size = 14;

    tile_font_lbl_size = 0;

    tile_full_screen = false;
    tile_window_width = 1024;
    tile_window_height = 768;
    tile_map_pixels = 4;

    tile_full_screen = SCREENMODE_AUTO;
    tile_window_width = 0;
    tile_window_height = 0;
    tile_map_pixels = 0;

    else BOOL_OPTION(tile_full_screen);

    else if (key == "tile_full_screen")
        tile_full_screen = (screen_mode)_read_bool(field, tile_full_screen);

    bool        tile_full_screen;

    screen_mode tile_full_screen;

#ifdef USE_TILE
enum screen_mode
{
    SCREENMODE_WINDOW = 0,
    SCREENMODE_FULL   = 1,
    SCREENMODE_AUTO   = 2
};
#endif

### The following lines define the colours of various objects within the
### tiles minimap. See options_guide.txt for more details.

### The following lines define the colours of various objects within the
### tiles minimap. See options_guide.txt for more details.

### Note: setting window, map, or font sizes to '0' implies auto-sizing.

### Predefined layouts for smaller standard resolutions.  Any window size
### at or above 1024x768 should probably use the above defaults.
### 800 x 480 (EeePC)
# tile_window_width = 800
# tile_window_height = 480
# tile_map_pixels = 3
# tile_full_screen = true
# tile_font_crt_size = 13
# tile_font_stat_size = 12
# tile_font_msg_size = 10
# tile_font_tip_size = 13
# tile_font_lbl_size = 11
### 1024 x 600 (EeePC 900+)
# tile_window_width = 1024
# tile_window_height = 600
# tile_map_pixels = 3
# tile_full_screen = true
# tile_font_crt_size = 14
# tile_font_stat_size = 14
# tile_font_msg_size = 12
# tile_font_tip_size = 13
# tile_font_lbl_size = 12
### 800 x 600
# tile_window_width = 800
# tile_window_height = 600
# tile_map_pixels = 3
# tile_font_crt_size = 14
# tile_font_stat_size = 11
# tile_font_msg_size = 12
# tile_font_tip_size = 13
# tile_font_lbl_size = 12