X-Git-Url: https://git.artsoft.org/?a=blobdiff_plain;f=src%2Flibgame%2Fsystem.c;h=dce2b888943693f787fb882b19dd4a20dd9413e3;hb=97baecdfcf386d972f6f8e6eec9ddfd3021ed7ed;hp=4b7a3cad7a238069e30d6f60bf345ce23e59e41e;hpb=44b31e75162d6e446a9e9b454a079a2da5604fdf;p=rocksndiamonds.git

diff --git a/src/libgame/system.c b/src/libgame/system.c
index 4b7a3cad..dce2b888 100644
--- a/src/libgame/system.c
+++ b/src/libgame/system.c
@@ -244,6 +244,8 @@ void SetDrawBackgroundMask(int draw_background_mask)
   gfx.draw_background_mask = draw_background_mask;
 }
 
+#if 0
+
 static void DrawBitmapFromTile(Bitmap *bitmap, Bitmap *tile,
 			       int dest_x, int dest_y, int width, int height)
 {
@@ -300,6 +302,39 @@ void SetBackgroundBitmap(Bitmap *background_bitmap_tile, int mask)
   }
 }
 
+#else
+
+void SetBackgroundBitmap(Bitmap *background_bitmap_tile, int mask)
+{
+  if (background_bitmap_tile != NULL)
+    gfx.background_bitmap_mask |= mask;
+  else
+    gfx.background_bitmap_mask &= ~mask;
+
+#if 0
+  if (gfx.background_bitmap == NULL)
+    gfx.background_bitmap = CreateBitmap(video.width, video.height,
+					 DEFAULT_DEPTH);
+#endif
+
+  if (background_bitmap_tile == NULL)	/* empty background requested */
+    return;
+
+  if (mask == REDRAW_ALL)
+    BlitBitmapTiled(background_bitmap_tile, gfx.background_bitmap, 0, 0, 0, 0,
+		    0, 0, video.width, video.height);
+  else if (mask == REDRAW_FIELD)
+    BlitBitmapTiled(background_bitmap_tile, gfx.background_bitmap, 0, 0, 0, 0,
+		    gfx.real_sx, gfx.real_sy, gfx.full_sxsize, gfx.full_sysize);
+  else if (mask == REDRAW_DOOR_1)
+  {
+    BlitBitmapTiled(background_bitmap_tile, gfx.background_bitmap, 0, 0, 0, 0,
+		    gfx.dx, gfx.dy, gfx.dxsize, gfx.dysize);
+  }
+}
+
+#endif
+
 void SetWindowBackgroundBitmap(Bitmap *background_bitmap_tile)
 {
   /* remove every mask before setting mask for window */
@@ -701,10 +736,43 @@ void BlitBitmap(Bitmap *src_bitmap, Bitmap *dst_bitmap,
 #endif
 #endif
 
+#if 0
+  if (dst_x < gfx.sx + gfx.sxsize)
+    printf("::: %d: BlitBitmap(%d, %d, %d, %d)\n",
+	   FrameCounter, dst_x, dst_y, width, height);
+#endif
+
   sysCopyArea(src_bitmap, dst_bitmap,
 	      src_x, src_y, width, height, dst_x, dst_y, BLIT_OPAQUE);
 }
 
+void BlitBitmapTiled(Bitmap *src_bitmap, Bitmap *dst_bitmap,
+		     int src_x, int src_y, int src_width, int src_height,
+		     int dst_x, int dst_y, int dst_width, int dst_height)
+{
+  int src_xsize = (src_width  == 0 ? src_bitmap->width  : src_width);
+  int src_ysize = (src_height == 0 ? src_bitmap->height : src_height);
+  int dst_xsize = dst_width;
+  int dst_ysize = dst_height;
+  int src_xsteps = (dst_xsize + src_xsize - 1) / src_xsize;
+  int src_ysteps = (dst_ysize + src_ysize - 1) / src_ysize;
+  int x, y;
+
+  for (y = 0; y < src_ysteps; y++)
+  {
+    for (x = 0; x < src_xsteps; x++)
+    {
+      int draw_x = dst_x + x * src_xsize;
+      int draw_y = dst_y + y * src_ysize;
+      int draw_xsize = MIN(src_xsize, dst_xsize - x * src_xsize);
+      int draw_ysize = MIN(src_ysize, dst_ysize - y * src_ysize);
+
+      BlitBitmap(src_bitmap, dst_bitmap, src_x, src_y, draw_xsize, draw_ysize,
+		 draw_x, draw_y);
+    }
+  }
+}
+
 void FadeRectangle(Bitmap *bitmap_cross, int x, int y, int width, int height,
 		   int fade_mode, int fade_delay, int post_delay,
 		   void (*draw_border_function)(void))