X-Git-Url: https://git.artsoft.org/?a=blobdiff_plain;f=src%2Flibgame%2Fsystem.c;h=64f67a179593cbd844576d746892c5a9fc17d489;hb=HEAD;hp=a3eae88217bc14c3ee295acea1f721530c7ecec2;hpb=21e33411cb221de827be347312ad67c59b7d5a95;p=rocksndiamonds.git

diff --git a/src/libgame/system.c b/src/libgame/system.c
index a3eae882..c1abb8a4 100644
--- a/src/libgame/system.c
+++ b/src/libgame/system.c
@@ -287,7 +287,7 @@ void InitGfxDrawGlobalBorderFunction(void (*draw_global_border_function)(int))
   gfx.draw_global_border_function = draw_global_border_function;
 }
 
-void InitGfxDrawTileCursorFunction(void (*draw_tile_cursor_function)(int))
+void InitGfxDrawTileCursorFunction(void (*draw_tile_cursor_function)(int, int))
 {
   gfx.draw_tile_cursor_function = draw_tile_cursor_function;
 }
@@ -599,9 +599,22 @@ void FreeBitmap(Bitmap *bitmap)
   free(bitmap);
 }
 
+void ResetBitmapAlpha(Bitmap *bitmap)
+{
+  bitmap->alpha[0][0] = -1;
+  bitmap->alpha[0][1] = -1;
+  bitmap->alpha[1][0] = -1;
+  bitmap->alpha[1][1] = -1;
+  bitmap->alpha_next_blit = -1;
+}
+
 Bitmap *CreateBitmapStruct(void)
 {
-  return checked_calloc(sizeof(Bitmap));
+  Bitmap *new_bitmap = checked_calloc(sizeof(Bitmap));
+
+  ResetBitmapAlpha(new_bitmap);
+
+  return new_bitmap;
 }
 
 Bitmap *CreateBitmap(int width, int height, int depth)
@@ -772,6 +785,12 @@ static boolean InClippedRectangle(Bitmap *bitmap, int *x, int *y,
   return TRUE;
 }
 
+void SetBitmapAlphaNextBlit(Bitmap *bitmap, int alpha)
+{
+  // set alpha value for next blitting of bitmap
+  bitmap->alpha_next_blit = alpha;
+}
+
 void BlitBitmap(Bitmap *src_bitmap, Bitmap *dst_bitmap,
 		int src_x, int src_y, int width, int height,
 		int dst_x, int dst_y)