X-Git-Url: https://git.artsoft.org/?a=blobdiff_plain;f=src%2Ffiles.c;h=09e3b4d2256fcfe7d7cee4b6c655070f57aee90b;hb=f8666bcc4d1da29f6fd026183d900d7118755f33;hp=8889f810ecaf59d121a62cbf506fb558757c4f9b;hpb=fba4d73f859e45839b0e32da0ad389e9145311a7;p=rocksndiamonds.git

diff --git a/src/files.c b/src/files.c
index 8889f810..09e3b4d2 100644
--- a/src/files.c
+++ b/src/files.c
@@ -13453,8 +13453,25 @@ void CreateCollectElementImages(void)
   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 = "RocksCollect.bmp";
-  char *filename = getPath2(global.create_collect_images_dir, basename);
+  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_RGBA32, 0);
 
   for (i = 0; i < MAX_NUM_ELEMENTS; i++)
   {
@@ -13476,6 +13493,13 @@ void CreateCollectElementImages(void)
     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_RGBA32, 0);
+
     tmp_bitmap->surface_masked = tmp_bitmap->surface;
 
     for (j = 0; j < anim_frames; j++)
@@ -13496,9 +13520,9 @@ void CreateCollectElementImages(void)
 	frame_bitmap = half_bitmap;
       }
 
-      BlitBitmap(frame_bitmap, dst_bitmap, 0, 0,
-		 frame_size_final, frame_size_final,
-		 dst_x + j * tile_size + offset, dst_y + offset);
+      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);
     }
@@ -13510,11 +13534,16 @@ void CreateCollectElementImages(void)
     pos_collect_images++;
   }
 
-  if (SDL_SaveBMP(dst_bitmap->surface, filename) != 0)
-    Fail("cannot save element collecting image file '%s'", filename);
+  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 ...");
+
+  system(cmd_convert);
+  unlink(filename_bmp);
+
   Info("Done.");
 
   CloseAllAndExit(0);