+// ----------------------------------------------------------------------------
+// create and save images for element collecting animations (raw BMP format)
+// ----------------------------------------------------------------------------
+
+static boolean createCollectImage(int element)
+{
+ return (IS_COLLECTIBLE(element) && !IS_SP_ELEMENT(element));
+}
+
+void CreateCollectElementImages(void)
+{
+ int i, j;
+ int num_steps = 8;
+ int anim_frames = num_steps - 1;
+ int tile_size = TILESIZE;
+ int anim_width = tile_size * anim_frames;
+ int anim_height = tile_size;
+ int num_collect_images = 0;
+ int pos_collect_images = 0;
+
+ for (i = 0; i < MAX_NUM_ELEMENTS; i++)
+ if (createCollectImage(i))
+ num_collect_images++;
+
+ Info("Creating %d element collecting animation images ...",
+ num_collect_images);
+
+ int dst_width = anim_width * 2;
+ int dst_height = anim_height * num_collect_images / 2;
+ Bitmap *dst_bitmap = CreateBitmap(dst_width, dst_height, DEFAULT_DEPTH);
+ char *basename_bmp = "RocksCollect.bmp";
+ char *basename_png = "RocksCollect.png";
+ char *filename_bmp = getPath2(global.create_collect_images_dir, basename_bmp);
+ char *filename_png = getPath2(global.create_collect_images_dir, basename_png);
+ int len_filename_bmp = strlen(filename_bmp);
+ int len_filename_png = strlen(filename_png);
+ int max_command_len = MAX_FILENAME_LEN + len_filename_bmp + len_filename_png;
+ char cmd_convert[max_command_len];
+
+ snprintf(cmd_convert, max_command_len, "convert \"%s\" \"%s\"",
+ filename_bmp,
+ filename_png);
+
+ // force using RGBA surface for destination bitmap
+ SDL_SetColorKey(dst_bitmap->surface, SET_TRANSPARENT_PIXEL,
+ SDL_MapRGB(dst_bitmap->surface->format, 0x00, 0x00, 0x00));
+
+ dst_bitmap->surface =
+ SDL_ConvertSurfaceFormat(dst_bitmap->surface, SDL_PIXELFORMAT_ARGB8888, 0);
+
+ for (i = 0; i < MAX_NUM_ELEMENTS; i++)
+ {
+ if (!createCollectImage(i))
+ continue;
+
+ int dst_x = (pos_collect_images / (num_collect_images / 2)) * anim_width;
+ int dst_y = (pos_collect_images % (num_collect_images / 2)) * anim_height;
+ int graphic = el2img(i);
+ char *token_name = element_info[i].token_name;
+ Bitmap *tmp_bitmap = CreateBitmap(tile_size, tile_size, DEFAULT_DEPTH);
+ Bitmap *src_bitmap;
+ int src_x, src_y;
+
+ Info("- creating collecting image for '%s' ...", token_name);
+
+ getGraphicSource(graphic, 0, &src_bitmap, &src_x, &src_y);
+
+ BlitBitmap(src_bitmap, tmp_bitmap, src_x, src_y,
+ tile_size, tile_size, 0, 0);
+
+ // force using RGBA surface for temporary bitmap (using transparent black)
+ SDL_SetColorKey(tmp_bitmap->surface, SET_TRANSPARENT_PIXEL,
+ SDL_MapRGB(tmp_bitmap->surface->format, 0x00, 0x00, 0x00));
+
+ tmp_bitmap->surface =
+ SDL_ConvertSurfaceFormat(tmp_bitmap->surface, SDL_PIXELFORMAT_ARGB8888, 0);
+
+ tmp_bitmap->surface_masked = tmp_bitmap->surface;
+
+ for (j = 0; j < anim_frames; j++)
+ {
+ int frame_size_final = tile_size * (anim_frames - j) / num_steps;
+ int frame_size = frame_size_final * num_steps;
+ int offset = (tile_size - frame_size_final) / 2;
+ Bitmap *frame_bitmap = ZoomBitmap(tmp_bitmap, frame_size, frame_size);
+
+ while (frame_size > frame_size_final)
+ {
+ frame_size /= 2;
+
+ Bitmap *half_bitmap = ZoomBitmap(frame_bitmap, frame_size, frame_size);
+
+ FreeBitmap(frame_bitmap);
+
+ frame_bitmap = half_bitmap;
+ }
+
+ BlitBitmapMasked(frame_bitmap, dst_bitmap, 0, 0,
+ frame_size_final, frame_size_final,
+ dst_x + j * tile_size + offset, dst_y + offset);
+
+ FreeBitmap(frame_bitmap);
+ }
+
+ tmp_bitmap->surface_masked = NULL;
+
+ FreeBitmap(tmp_bitmap);
+
+ pos_collect_images++;
+ }
+
+ if (SDL_SaveBMP(dst_bitmap->surface, filename_bmp) != 0)
+ Fail("cannot save element collecting image file '%s'", filename_bmp);
+
+ FreeBitmap(dst_bitmap);
+
+ Info("Converting image file from BMP to PNG ...");
+
+ if (system(cmd_convert) != 0)
+ Fail("converting image file failed");
+
+ unlink(filename_bmp);
+
+ Info("Done.");
+
+ CloseAllAndExit(0);
+}
+
+