added graphics config option for level-specific colors for BD engine

[rocksndiamonds.git] / src / tools.c

diff --git a/src/tools.c b/src/tools.c
index e1b79cbf870574541be9aaa4001516f0d4711377..b92cf01b747cd3dbd61a90c4d85790f88f2b7001 100644 (file)
--- a/src/tools.c
+++ b/src/tools.c
@@ -3396,6 +3396,14 @@ static void ShowEnvelopeRequest(char *text, unsigned int req_state, int action)
   game.envelope_active = FALSE;
 }
 
+static Bitmap *GetPreviewTileBitmap(Bitmap *bitmap)
+{
+  if (level.game_engine_type == GAME_ENGINE_TYPE_BD)
+    return GetPreviewTileBitmap_BD(bitmap);
+
+  return bitmap;
+}
+
 static void DrawPreviewElement(int dst_x, int dst_y, int element, int tilesize)
 {
   if (IS_MM_WALL(element))
@@ -3409,6 +3417,10 @@ static void DrawPreviewElement(int dst_x, int dst_y, int element, int tilesize)
     int graphic = el2preimg(element);
 
     getSizedGraphicSource(graphic, 0, tilesize, &src_bitmap, &src_x, &src_y);
+
+    // for BD style levels, maybe use bitmap with level-specific colors
+    src_bitmap = GetPreviewTileBitmap(src_bitmap);
+
     BlitBitmap(src_bitmap, drawto, src_x, src_y, tilesize, tilesize,
               dst_x, dst_y);
   }
@@ -3815,8 +3827,35 @@ void DrawPreviewPlayers(void)
   }
 }
 
+static void PreparePreviewTileBitmap(void)
+{
+  // check if special preview bitmap with level-specific colors should be created
+  if (level.game_engine_type != GAME_ENGINE_TYPE_BD)
+    return;
+
+  // use original sized bitmap (else reduced color palette is lost by downscaling)
+  int original_tilesize = MAX(MINI_TILESIZE, preview.tile_size);
+  int scale_down_factor = original_tilesize / preview.tile_size;
+  Bitmap *src_bitmap;
+  int src_x, src_y;
+  int element_template = EL_BD_GAME_GRAPHICS_COLOR_TEMPLATE;
+  int graphic_template = el2preimg(element_template);
+  int element_default = EL_BD_ROCK;
+  int graphic_default = el2preimg(element_default);
+
+  // create special preview bitmap and scale it down to preview tile size
+  getSizedGraphicSource(graphic_template, 0, original_tilesize, &src_bitmap, &src_x, &src_y);
+  PreparePreviewTileBitmap_BD(src_bitmap, scale_down_factor);
+
+  // force using special preview bitmap to replace original preview bitmap
+  getSizedGraphicSource(graphic_default, 0, preview.tile_size, &src_bitmap, &src_x, &src_y);
+  SetPreviewTileBitmapReference_BD(src_bitmap);
+}
+
 void DrawPreviewLevelInitial(void)
 {
+  PreparePreviewTileBitmap();  // only needed for native BD style levels
+
   DrawPreviewLevelExt(TRUE);
   DrawPreviewPlayers();
 }
@@ -10118,6 +10157,20 @@ void InitGraphicInfo_BD(void)
       g_bd->height = TILEY;
     }
   }
+
+  // game graphics template for level-specific colors for native BD levels
+  int graphic = IMG_BD_GAME_GRAPHICS_COLOR_TEMPLATE;
+  struct GraphicInfo_BD *g_bd = &graphic_info_bd_color_template;
+  Bitmap *src_bitmap;
+  int src_x, src_y;
+
+  getGraphicSourceExt(graphic, 0, &src_bitmap, &src_x, &src_y, FALSE);
+
+  g_bd->bitmap = src_bitmap;
+  g_bd->src_x  = src_x;
+  g_bd->src_y  = src_y;
+  g_bd->width  = TILEX;
+  g_bd->height = TILEY;
 }
 
 void InitGraphicInfo_EM(void)