added checking availability of level specific colors in level editor

[rocksndiamonds.git] / src / game_bd / bd_graphics.c

diff --git a/src/game_bd/bd_graphics.c b/src/game_bd/bd_graphics.c
index aa091ba131b44404613d50aebcdde97ce18ee4d6..9060aae3247d1fcfa8145c83b6fa38b31ad1cd0e 100644 (file)
--- a/src/game_bd/bd_graphics.c
+++ b/src/game_bd/bd_graphics.c
@@ -363,6 +363,11 @@ static boolean surface_has_c64_colors(SDL_Surface *surface)
   return has_c64_colors;
 }
 
+boolean gd_bitmap_has_c64_colors(Bitmap *bitmap)
+{
+  return surface_has_c64_colors(bitmap->surface);
+}
+
 // sets one of the colors in the indexed palette of an sdl surface to a GdColor.
 static void set_surface_palette_color(SDL_Surface *surface, int index, GdColor col)
 {
@@ -466,8 +471,14 @@ static Bitmap *get_tile_bitmap_c64(GdCave *cave, SDL_Surface *surface)
   set_surface_palette_color(surface, 7, 0);
   set_surface_palette_color(surface, 8, 0);
 
+  // set background color to be transparent for masked tile bitmap
+  int bg_color = gd_color_get_rgb(cave->color0);
+  int bg_r = gd_color_get_r(bg_color);
+  int bg_g = gd_color_get_g(bg_color);
+  int bg_b = gd_color_get_b(bg_color);
+
   // create bitmap from C64 surface
-  tile_bitmap_c64 = SDLGetBitmapFromSurface(surface);
+  tile_bitmap_c64 = SDLGetBitmapFromSurface_WithMaskedColor(surface, bg_r, bg_g, bg_b);
 
   return tile_bitmap_c64;
 }