+ if (*x < clip_x)
+ {
+ *width -= clip_x - *x;
+ *x = clip_x;
+ }
+ else if (*x + *width > clip_x + clip_width)
+ {
+ *width = clip_x + clip_width - *x;
+ }
+
+ if (*y < clip_y)
+ {
+ *height -= clip_y - *y;
+ *y = clip_y;
+ }
+ else if (*y + *height > clip_y + clip_height)
+ {
+ *height = clip_y + clip_height - *y;
+ }
+
+ return TRUE;
+}
+
+void BlitBitmap(Bitmap *src_bitmap, Bitmap *dst_bitmap,
+ int src_x, int src_y, int width, int height,
+ int dst_x, int dst_y)
+{
+ int dst_x_unclipped = dst_x;
+ int dst_y_unclipped = dst_y;
+
+ if (src_bitmap == NULL || dst_bitmap == NULL)
+ return;
+
+ if (DrawingDeactivated(dst_x, dst_y, width, height))
+ return;
+
+ if (!InClippedRectangle(src_bitmap, &src_x, &src_y, &width, &height, FALSE) ||
+ !InClippedRectangle(dst_bitmap, &dst_x, &dst_y, &width, &height, TRUE))
+ return;
+
+ /* source x/y might need adjustment if destination x/y was clipped top/left */
+ src_x += dst_x - dst_x_unclipped;
+ src_y += dst_y - dst_y_unclipped;
+
+#if defined(TARGET_SDL2)
+ /* !!! 2013-12-11: An "old friend" is back. Same bug in SDL2 2.0.1 !!! */
+ /* !!! 2009-03-30: Fixed by using self-compiled, patched SDL.dll !!! */
+ /* (This bug still exists in the actual (as of 2009-06-15) version 1.2.13,
+ but is already fixed in SVN and should therefore finally be fixed with
+ the next official SDL release, which is probably version 1.2.14.) */
+ /* !!! 2009-03-24: It seems that this problem still exists in 1.2.12 !!! */
+
+ if (src_bitmap == dst_bitmap)
+ {
+ /* needed when blitting directly to same bitmap -- should not be needed with
+ recent SDL libraries, but apparently does not work in 1.2.11 directly */
+
+ static Bitmap *tmp_bitmap = NULL;
+ static int tmp_bitmap_xsize = 0;
+ static int tmp_bitmap_ysize = 0;
+
+ /* start with largest static bitmaps for initial bitmap size ... */
+ if (tmp_bitmap_xsize == 0 && tmp_bitmap_ysize == 0)
+ {
+ tmp_bitmap_xsize = MAX(gfx.win_xsize, gfx.scrollbuffer_width);
+ tmp_bitmap_ysize = MAX(gfx.win_ysize, gfx.scrollbuffer_height);
+ }
+
+ /* ... and allow for later re-adjustments due to custom artwork bitmaps */
+ if (src_bitmap->width > tmp_bitmap_xsize ||
+ src_bitmap->height > tmp_bitmap_ysize)
+ {
+ tmp_bitmap_xsize = MAX(tmp_bitmap_xsize, src_bitmap->width);
+ tmp_bitmap_ysize = MAX(tmp_bitmap_ysize, src_bitmap->height);
+
+ FreeBitmap(tmp_bitmap);
+
+ tmp_bitmap = NULL;
+ }
+
+ if (tmp_bitmap == NULL)
+ tmp_bitmap = CreateBitmap(tmp_bitmap_xsize, tmp_bitmap_ysize,
+ DEFAULT_DEPTH);
+
+ sysCopyArea(src_bitmap, tmp_bitmap,
+ src_x, src_y, width, height, dst_x, dst_y, BLIT_OPAQUE);
+ sysCopyArea(tmp_bitmap, dst_bitmap,
+ dst_x, dst_y, width, height, dst_x, dst_y, BLIT_OPAQUE);
+
+ return;
+ }
+#endif
+
+ sysCopyArea(src_bitmap, dst_bitmap,
+ src_x, src_y, width, height, dst_x, dst_y, BLIT_OPAQUE);
+}
+
+void BlitBitmapTiled(Bitmap *src_bitmap, Bitmap *dst_bitmap,
+ int src_x, int src_y, int src_width, int src_height,
+ int dst_x, int dst_y, int dst_width, int dst_height)
+{
+ int src_xsize = (src_width == 0 ? src_bitmap->width : src_width);
+ int src_ysize = (src_height == 0 ? src_bitmap->height : src_height);
+ int dst_xsize = dst_width;
+ int dst_ysize = dst_height;
+ int src_xsteps = (dst_xsize + src_xsize - 1) / src_xsize;
+ int src_ysteps = (dst_ysize + src_ysize - 1) / src_ysize;
+ int x, y;
+
+ for (y = 0; y < src_ysteps; y++)
+ {
+ for (x = 0; x < src_xsteps; x++)
+ {
+ int draw_x = dst_x + x * src_xsize;
+ int draw_y = dst_y + y * src_ysize;
+ int draw_xsize = MIN(src_xsize, dst_xsize - x * src_xsize);
+ int draw_ysize = MIN(src_ysize, dst_ysize - y * src_ysize);
+
+ BlitBitmap(src_bitmap, dst_bitmap, src_x, src_y, draw_xsize, draw_ysize,
+ draw_x, draw_y);
+ }
+ }
+}
+
+void FadeRectangle(int x, int y, int width, int height,
+ int fade_mode, int fade_delay, int post_delay,
+ void (*draw_border_function)(void))
+{
+ /* (use destination bitmap "backbuffer" -- "bitmap_cross" may be undefined) */
+ if (!InClippedRectangle(backbuffer, &x, &y, &width, &height, TRUE))
+ return;
+
+ SDLFadeRectangle(x, y, width, height,
+ fade_mode, fade_delay, post_delay, draw_border_function);
+}
+
+void FillRectangle(Bitmap *bitmap, int x, int y, int width, int height,
+ Pixel color)
+{
+ if (DrawingDeactivated(x, y, width, height))
+ return;
+
+ if (!InClippedRectangle(bitmap, &x, &y, &width, &height, TRUE))
+ return;
+
+ sysFillRectangle(bitmap, x, y, width, height, color);
+}
+
+void ClearRectangle(Bitmap *bitmap, int x, int y, int width, int height)
+{
+ FillRectangle(bitmap, x, y, width, height, BLACK_PIXEL);
+}
+
+void ClearRectangleOnBackground(Bitmap *bitmap, int x, int y,
+ int width, int height)
+{
+ if (DrawingOnBackground(x, y))
+ BlitBitmap(gfx.background_bitmap, bitmap, x, y, width, height, x, y);
+ else
+ ClearRectangle(bitmap, x, y, width, height);
+}
+
+void BlitBitmapMasked(Bitmap *src_bitmap, Bitmap *dst_bitmap,
+ int src_x, int src_y, int width, int height,
+ int dst_x, int dst_y)
+{
+ if (DrawingDeactivated(dst_x, dst_y, width, height))
+ return;
+
+ sysCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
+ dst_x, dst_y, BLIT_MASKED);
+}
+
+void BlitBitmapOnBackground(Bitmap *src_bitmap, Bitmap *dst_bitmap,
+ int src_x, int src_y, int width, int height,
+ int dst_x, int dst_y)
+{
+ if (DrawingOnBackground(dst_x, dst_y))
+ {
+ /* draw background */
+ BlitBitmap(gfx.background_bitmap, dst_bitmap, dst_x, dst_y, width, height,
+ dst_x, dst_y);
+
+ /* draw foreground */
+ BlitBitmapMasked(src_bitmap, dst_bitmap, src_x, src_y, width, height,
+ dst_x, dst_y);
+ }
+ else
+ BlitBitmap(src_bitmap, dst_bitmap, src_x, src_y, width, height,
+ dst_x, dst_y);
+}
+
+void BlitTexture(Bitmap *bitmap,
+ int src_x, int src_y, int width, int height,
+ int dst_x, int dst_y)
+{
+ if (bitmap == NULL)
+ return;
+
+ SDLBlitTexture(bitmap, src_x, src_y, width, height, dst_x, dst_y,
+ BLIT_OPAQUE);
+}
+
+void BlitTextureMasked(Bitmap *bitmap,
+ int src_x, int src_y, int width, int height,
+ int dst_x, int dst_y)
+{
+ if (bitmap == NULL)
+ return;
+
+ SDLBlitTexture(bitmap, src_x, src_y, width, height, dst_x, dst_y,
+ BLIT_MASKED);
+}
+
+void BlitToScreen(Bitmap *bitmap,
+ int src_x, int src_y, int width, int height,
+ int dst_x, int dst_y)
+{
+ if (bitmap == NULL)
+ return;
+
+ if (video.screen_rendering_mode == SPECIAL_RENDERING_BITMAP)
+ BlitBitmap(bitmap, gfx.final_screen_bitmap, src_x, src_y,
+ width, height, dst_x, dst_y);
+ else
+ BlitTexture(bitmap, src_x, src_y, width, height, dst_x, dst_y);
+}
+
+void BlitToScreenMasked(Bitmap *bitmap,
+ int src_x, int src_y, int width, int height,
+ int dst_x, int dst_y)
+{
+ if (bitmap == NULL)
+ return;
+
+ if (video.screen_rendering_mode == SPECIAL_RENDERING_BITMAP)
+ BlitBitmapMasked(bitmap, gfx.final_screen_bitmap, src_x, src_y,
+ width, height, dst_x, dst_y);
+ else
+ BlitTextureMasked(bitmap, src_x, src_y, width, height, dst_x, dst_y);
+}
+
+void DrawSimpleBlackLine(Bitmap *bitmap, int from_x, int from_y,
+ int to_x, int to_y)
+{
+ SDLDrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, BLACK_PIXEL);
+}
+
+void DrawSimpleWhiteLine(Bitmap *bitmap, int from_x, int from_y,
+ int to_x, int to_y)
+{
+ SDLDrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, WHITE_PIXEL);
+}
+
+void DrawLine(Bitmap *bitmap, int from_x, int from_y,
+ int to_x, int to_y, Pixel pixel, int line_width)
+{
+ int x, y;
+
+ for (x = 0; x < line_width; x++)
+ {
+ for (y = 0; y < line_width; y++)
+ {
+ int dx = x - line_width / 2;
+ int dy = y - line_width / 2;
+
+ if ((x == 0 && y == 0) ||
+ (x == 0 && y == line_width - 1) ||
+ (x == line_width - 1 && y == 0) ||
+ (x == line_width - 1 && y == line_width - 1))
+ continue;
+
+ SDLDrawLine(bitmap,
+ from_x + dx, from_y + dy, to_x + dx, to_y + dy, pixel);
+ }
+ }
+}
+
+void DrawLines(Bitmap *bitmap, struct XY *points, int num_points, Pixel pixel)
+{
+ int line_width = 4;
+ int i;
+
+ for (i = 0; i < num_points - 1; i++)
+ DrawLine(bitmap, points[i].x, points[i].y,
+ points[i + 1].x, points[i + 1].y, pixel, line_width);
+
+ /*
+ SDLDrawLines(bitmap->surface, points, num_points, pixel);
+ */
+}
+
+Pixel GetPixel(Bitmap *bitmap, int x, int y)
+{
+ if (x < 0 || x >= bitmap->width ||
+ y < 0 || y >= bitmap->height)
+ return BLACK_PIXEL;
+
+ return SDLGetPixel(bitmap, x, y);
+}
+
+Pixel GetPixelFromRGB(Bitmap *bitmap, unsigned int color_r,
+ unsigned int color_g, unsigned int color_b)
+{
+ return SDL_MapRGB(bitmap->surface->format, color_r, color_g, color_b);
+}
+
+Pixel GetPixelFromRGBcompact(Bitmap *bitmap, unsigned int color)
+{
+ unsigned int color_r = (color >> 16) & 0xff;
+ unsigned int color_g = (color >> 8) & 0xff;
+ unsigned int color_b = (color >> 0) & 0xff;
+
+ return GetPixelFromRGB(bitmap, color_r, color_g, color_b);
+}
+
+void KeyboardAutoRepeatOn(void)
+{
+#if defined(TARGET_SDL2)
+ keyrepeat_status = TRUE;
+#else
+ SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY / 2,
+ SDL_DEFAULT_REPEAT_INTERVAL / 2);
+ SDL_EnableUNICODE(1);
+#endif
+}
+
+void KeyboardAutoRepeatOff(void)
+{
+#if defined(TARGET_SDL2)
+ keyrepeat_status = FALSE;
+#else
+ SDL_EnableKeyRepeat(0, SDL_DEFAULT_REPEAT_INTERVAL);
+ SDL_EnableUNICODE(0);
+#endif
+}
+
+boolean SetVideoMode(boolean fullscreen)
+{
+ return SDLSetVideoMode(fullscreen);
+}
+
+void SetVideoFrameDelay(unsigned int frame_delay_value)
+{
+ video.frame_delay_value = frame_delay_value;
+}
+
+unsigned int GetVideoFrameDelay()
+{
+ return video.frame_delay_value;
+}
+
+boolean ChangeVideoModeIfNeeded(boolean fullscreen)
+{
+ if ((fullscreen && !video.fullscreen_enabled && video.fullscreen_available)||
+ (!fullscreen && video.fullscreen_enabled))
+ fullscreen = SetVideoMode(fullscreen);
+
+ return fullscreen;
+}
+
+Bitmap *LoadImage(char *filename)
+{
+ Bitmap *new_bitmap;
+
+ new_bitmap = SDLLoadImage(filename);
+
+ if (new_bitmap)
+ new_bitmap->source_filename = getStringCopy(filename);
+
+ return new_bitmap;
+}
+
+Bitmap *LoadCustomImage(char *basename)
+{
+ char *filename = getCustomImageFilename(basename);
+ Bitmap *new_bitmap;
+
+ if (filename == NULL)
+ Error(ERR_EXIT, "LoadCustomImage(): cannot find file '%s'", basename);
+
+ if ((new_bitmap = LoadImage(filename)) == NULL)
+ Error(ERR_EXIT, "LoadImage('%s') failed: %s", basename, GetError());
+
+ return new_bitmap;
+}
+
+void ReloadCustomImage(Bitmap *bitmap, char *basename)
+{
+ char *filename = getCustomImageFilename(basename);
+ Bitmap *new_bitmap;
+
+ if (filename == NULL) /* (should never happen) */
+ {
+ Error(ERR_WARN, "ReloadCustomImage(): cannot find file '%s'", basename);
+ return;
+ }
+
+ if (strEqual(filename, bitmap->source_filename))
+ {
+ /* The old and new image are the same (have the same filename and path).
+ This usually means that this image does not exist in this graphic set
+ and a fallback to the existing image is done. */
+
+ return;
+ }
+
+ if ((new_bitmap = LoadImage(filename)) == NULL)
+ {
+ Error(ERR_WARN, "LoadImage('%s') failed: %s", basename, GetError());
+ return;
+ }
+
+ if (bitmap->width != new_bitmap->width ||
+ bitmap->height != new_bitmap->height)
+ {
+ Error(ERR_WARN, "ReloadCustomImage: new image '%s' has wrong dimensions",
+ filename);
+ FreeBitmap(new_bitmap);
+ return;
+ }
+
+ TransferBitmapPointers(new_bitmap, bitmap);
+ free(new_bitmap);
+}
+
+static Bitmap *ZoomBitmap(Bitmap *src_bitmap, int zoom_width, int zoom_height)
+{
+ return SDLZoomBitmap(src_bitmap, zoom_width, zoom_height);
+}
+
+void ReCreateGameTileSizeBitmap(Bitmap **bitmaps)
+{
+ if (bitmaps[IMG_BITMAP_CUSTOM])
+ {
+ FreeBitmap(bitmaps[IMG_BITMAP_CUSTOM]);
+
+ bitmaps[IMG_BITMAP_CUSTOM] = NULL;
+ }
+
+ if (gfx.game_tile_size == gfx.standard_tile_size)
+ {
+ bitmaps[IMG_BITMAP_GAME] = bitmaps[IMG_BITMAP_STANDARD];
+
+ return;
+ }
+
+ Bitmap *bitmap = bitmaps[IMG_BITMAP_STANDARD];
+ int width = bitmap->width * gfx.game_tile_size / gfx.standard_tile_size;;
+ int height = bitmap->height * gfx.game_tile_size / gfx.standard_tile_size;;
+
+ Bitmap *bitmap_new = ZoomBitmap(bitmap, width, height);
+
+ bitmaps[IMG_BITMAP_CUSTOM] = bitmap_new;
+ bitmaps[IMG_BITMAP_GAME] = bitmap_new;
+}
+
+static void CreateScaledBitmaps(Bitmap **bitmaps, int zoom_factor,
+ int tile_size, boolean create_small_bitmaps)
+{
+ Bitmap *old_bitmap = bitmaps[IMG_BITMAP_STANDARD];
+ Bitmap *tmp_bitmap_final = NULL;
+ Bitmap *tmp_bitmap_0 = NULL;
+ Bitmap *tmp_bitmap_1 = NULL;
+ Bitmap *tmp_bitmap_2 = NULL;
+ Bitmap *tmp_bitmap_4 = NULL;
+ Bitmap *tmp_bitmap_8 = NULL;
+ Bitmap *tmp_bitmap_16 = NULL;
+ Bitmap *tmp_bitmap_32 = NULL;
+ int width_final, height_final;
+ int width_0, height_0;
+ int width_1, height_1;
+ int width_2, height_2;
+ int width_4, height_4;
+ int width_8, height_8;
+ int width_16, height_16;
+ int width_32, height_32;
+ int old_width, old_height;
+ int i;
+
+ print_timestamp_init("CreateScaledBitmaps");
+
+ old_width = old_bitmap->width;
+ old_height = old_bitmap->height;
+
+ /* calculate new image dimensions for final image size */
+ width_final = old_width * zoom_factor;
+ height_final = old_height * zoom_factor;
+
+ /* get image with final size (this might require scaling up) */
+ /* ("final" size may result in non-standard tile size image) */
+ if (zoom_factor != 1)
+ tmp_bitmap_final = ZoomBitmap(old_bitmap, width_final, height_final);
+ else
+ tmp_bitmap_final = old_bitmap;
+
+ UPDATE_BUSY_STATE();
+
+ width_0 = width_1 = width_final;
+ height_0 = height_1 = height_final;
+
+ tmp_bitmap_0 = tmp_bitmap_1 = tmp_bitmap_final;
+
+ if (create_small_bitmaps)
+ {
+ /* check if we have a non-gameplay tile size image */
+ if (tile_size != gfx.game_tile_size)
+ {
+ /* get image with gameplay tile size */
+ width_0 = width_final * gfx.game_tile_size / tile_size;
+ height_0 = height_final * gfx.game_tile_size / tile_size;
+
+ if (width_0 == old_width)
+ tmp_bitmap_0 = old_bitmap;
+ else if (width_0 == width_final)
+ tmp_bitmap_0 = tmp_bitmap_final;
+ else
+ tmp_bitmap_0 = ZoomBitmap(old_bitmap, width_0, height_0);
+
+ UPDATE_BUSY_STATE();
+ }
+
+ /* check if we have a non-standard tile size image */
+ if (tile_size != gfx.standard_tile_size)
+ {
+ /* get image with standard tile size */
+ width_1 = width_final * gfx.standard_tile_size / tile_size;
+ height_1 = height_final * gfx.standard_tile_size / tile_size;
+
+ if (width_1 == old_width)
+ tmp_bitmap_1 = old_bitmap;
+ else if (width_1 == width_final)
+ tmp_bitmap_1 = tmp_bitmap_final;
+ else if (width_1 == width_0)
+ tmp_bitmap_1 = tmp_bitmap_0;
+ else
+ tmp_bitmap_1 = ZoomBitmap(old_bitmap, width_1, height_1);
+
+ UPDATE_BUSY_STATE();
+ }
+
+ /* calculate new image dimensions for small images */
+ width_2 = width_1 / 2;
+ height_2 = height_1 / 2;
+ width_4 = width_1 / 4;
+ height_4 = height_1 / 4;
+ width_8 = width_1 / 8;
+ height_8 = height_1 / 8;
+ width_16 = width_1 / 16;
+ height_16 = height_1 / 16;
+ width_32 = width_1 / 32;
+ height_32 = height_1 / 32;
+
+ /* get image with 1/2 of normal size (for use in the level editor) */
+ if (width_2 == old_width)
+ tmp_bitmap_2 = old_bitmap;
+ else
+ tmp_bitmap_2 = ZoomBitmap(tmp_bitmap_1, width_2, height_2);
+
+ UPDATE_BUSY_STATE();
+
+ /* get image with 1/4 of normal size (for use in the level editor) */
+ if (width_4 == old_width)
+ tmp_bitmap_4 = old_bitmap;
+ else
+ tmp_bitmap_4 = ZoomBitmap(tmp_bitmap_2, width_4, height_4);
+
+ UPDATE_BUSY_STATE();
+
+ /* get image with 1/8 of normal size (for use on the preview screen) */
+ if (width_8 == old_width)
+ tmp_bitmap_8 = old_bitmap;
+ else
+ tmp_bitmap_8 = ZoomBitmap(tmp_bitmap_4, width_8, height_8);
+
+ UPDATE_BUSY_STATE();
+
+ /* get image with 1/16 of normal size (for use on the preview screen) */
+ if (width_16 == old_width)
+ tmp_bitmap_16 = old_bitmap;
+ else
+ tmp_bitmap_16 = ZoomBitmap(tmp_bitmap_8, width_16, height_16);
+
+ UPDATE_BUSY_STATE();
+
+ /* get image with 1/32 of normal size (for use on the preview screen) */
+ if (width_32 == old_width)
+ tmp_bitmap_32 = old_bitmap;
+ else
+ tmp_bitmap_32 = ZoomBitmap(tmp_bitmap_16, width_32, height_32);
+
+ UPDATE_BUSY_STATE();
+
+ bitmaps[IMG_BITMAP_32x32] = tmp_bitmap_1;
+ bitmaps[IMG_BITMAP_16x16] = tmp_bitmap_2;
+ bitmaps[IMG_BITMAP_8x8] = tmp_bitmap_4;
+ bitmaps[IMG_BITMAP_4x4] = tmp_bitmap_8;
+ bitmaps[IMG_BITMAP_2x2] = tmp_bitmap_16;
+ bitmaps[IMG_BITMAP_1x1] = tmp_bitmap_32;
+
+ if (width_0 != width_1)
+ bitmaps[IMG_BITMAP_CUSTOM] = tmp_bitmap_0;
+
+ if (bitmaps[IMG_BITMAP_CUSTOM])
+ bitmaps[IMG_BITMAP_GAME] = bitmaps[IMG_BITMAP_CUSTOM];
+ else
+ bitmaps[IMG_BITMAP_GAME] = bitmaps[IMG_BITMAP_STANDARD];
+
+ boolean free_old_bitmap = TRUE;
+
+ for (i = 0; i < NUM_IMG_BITMAPS; i++)
+ if (bitmaps[i] == old_bitmap)
+ free_old_bitmap = FALSE;
+
+ if (free_old_bitmap)
+ FreeBitmap(old_bitmap);
+ }
+ else
+ {
+ bitmaps[IMG_BITMAP_32x32] = tmp_bitmap_1;
+ }
+
+ UPDATE_BUSY_STATE();
+
+ print_timestamp_done("CreateScaledBitmaps");
+}
+
+void CreateBitmapWithSmallBitmaps(Bitmap **bitmaps, int zoom_factor,
+ int tile_size)
+{
+ CreateScaledBitmaps(bitmaps, zoom_factor, tile_size, TRUE);
+}
+
+void CreateBitmapTextures(Bitmap **bitmaps)
+{
+ SDLCreateBitmapTextures(bitmaps[IMG_BITMAP_STANDARD]);
+}
+
+void FreeBitmapTextures(Bitmap **bitmaps)
+{
+ SDLFreeBitmapTextures(bitmaps[IMG_BITMAP_STANDARD]);
+}
+
+void ScaleBitmap(Bitmap **bitmaps, int zoom_factor)
+{
+ CreateScaledBitmaps(bitmaps, zoom_factor, 0, FALSE);
+}
+
+
+/* ------------------------------------------------------------------------- */
+/* mouse pointer functions */
+/* ------------------------------------------------------------------------- */
+
+#define USE_ONE_PIXEL_PLAYFIELD_MOUSEPOINTER 0
+
+/* XPM image definitions */
+static const char *cursor_image_none[] =
+{
+ /* width height num_colors chars_per_pixel */
+ " 16 16 3 1",
+
+ /* colors */
+ "X c #000000",
+ ". c #ffffff",
+ " c None",
+
+ /* pixels */
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+
+ /* hot spot */
+ "0,0"
+};
+
+#if USE_ONE_PIXEL_PLAYFIELD_MOUSEPOINTER
+static const char *cursor_image_dot[] =
+{
+ /* width height num_colors chars_per_pixel */
+ " 16 16 3 1",
+
+ /* colors */
+ "X c #000000",
+ ". c #ffffff",
+ " c None",
+
+ /* pixels */
+ " X ",
+ "X.X ",
+ " X ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+
+ /* hot spot */
+ "1,1"
+};
+static const char **cursor_image_playfield = cursor_image_dot;
+#else
+/* some people complained about a "white dot" on the screen and thought it
+ was a graphical error... OK, let's just remove the whole pointer :-) */
+static const char **cursor_image_playfield = cursor_image_none;
+#endif
+
+static const int cursor_bit_order = BIT_ORDER_MSB;
+
+static struct MouseCursorInfo *get_cursor_from_image(const char **image)
+{
+ struct MouseCursorInfo *cursor;
+ boolean bit_order_msb = (cursor_bit_order == BIT_ORDER_MSB);
+ int header_lines = 4;
+ int x, y, i;
+
+ cursor = checked_calloc(sizeof(struct MouseCursorInfo));
+
+ sscanf(image[0], " %d %d ", &cursor->width, &cursor->height);
+
+ i = -1;
+ for (y = 0; y < cursor->width; y++)
+ {
+ for (x = 0; x < cursor->height; x++)
+ {
+ int bit_nr = x % 8;
+ int bit_mask = 0x01 << (bit_order_msb ? 7 - bit_nr : bit_nr );
+
+ if (bit_nr == 0)
+ {
+ i++;
+ cursor->data[i] = cursor->mask[i] = 0;
+ }
+
+ switch (image[header_lines + y][x])
+ {
+ case 'X':
+ cursor->data[i] |= bit_mask;
+ cursor->mask[i] |= bit_mask;
+ break;
+
+ case '.':
+ cursor->mask[i] |= bit_mask;
+ break;
+
+ case ' ':
+ break;
+ }
+ }
+ }
+
+ sscanf(image[header_lines + y], "%d,%d", &cursor->hot_x, &cursor->hot_y);
+
+ return cursor;
+}
+
+void SetMouseCursor(int mode)
+{
+ static struct MouseCursorInfo *cursor_none = NULL;
+ static struct MouseCursorInfo *cursor_playfield = NULL;
+ struct MouseCursorInfo *cursor_new;
+
+ if (cursor_none == NULL)
+ cursor_none = get_cursor_from_image(cursor_image_none);
+
+ if (cursor_playfield == NULL)
+ cursor_playfield = get_cursor_from_image(cursor_image_playfield);
+
+ cursor_new = (mode == CURSOR_DEFAULT ? NULL :
+ mode == CURSOR_NONE ? cursor_none :
+ mode == CURSOR_PLAYFIELD ? cursor_playfield : NULL);
+
+ SDLSetMouseCursor(cursor_new);
+
+ gfx.cursor_mode = mode;
+}
+
+
+/* ========================================================================= */