X-Git-Url: https://git.artsoft.org/?p=rocksndiamonds.git;a=blobdiff_plain;f=src%2Flibgame%2Fsystem.c;h=c1abb8a41ab1d11d7d43f34f5c128dea14694e99;hp=2fad22274b84e09fc5bdac61421b860f511265ab;hb=HEAD;hpb=89237f2f4d7189714da64da53c1515979ad49b2d

diff --git a/src/libgame/system.c b/src/libgame/system.c
index 2fad2227..c1abb8a4 100644
--- a/src/libgame/system.c
+++ b/src/libgame/system.c
@@ -599,15 +599,20 @@ 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)
 {
   Bitmap *new_bitmap = checked_calloc(sizeof(Bitmap));
 
-  new_bitmap->alpha[0][0] = -1;
-  new_bitmap->alpha[0][1] = -1;
-  new_bitmap->alpha[1][0] = -1;
-  new_bitmap->alpha[1][1] = -1;
-  new_bitmap->alpha_next_blit = -1;
+  ResetBitmapAlpha(new_bitmap);
 
   return new_bitmap;
 }