rnd-19981202-2

[rocksndiamonds.git] / src / tools.c

diff --git a/src/tools.c b/src/tools.c
index 1d1c4ddab74dac7b8b66da271fc30c613a60ee7c..b8026898b0212a18490d2cfdac4e32b16eb76bde 100644 (file)
--- a/src/tools.c
+++ b/src/tools.c
@@ -117,13 +117,15 @@ void BackToFront()
 
       if (setup.soft_scrolling)
       {
-       fx += (ScreenMovDir & (MV_LEFT|MV_RIGHT) ? ScreenGfxPos : 0);
-       fy += (ScreenMovDir & (MV_UP|MV_DOWN)    ? ScreenGfxPos : 0);
+       fx += (ScreenMovDir & (MV_LEFT | MV_RIGHT) ? ScreenGfxPos : 0);
+       fy += (ScreenMovDir & (MV_UP | MV_DOWN)    ? ScreenGfxPos : 0);
       }
 
-      XCopyArea(display,buffer,window,gc,
-               fx,fy, SXSIZE,SYSIZE,
-               SX,SY);
+      if (setup.soft_scrolling ||
+         ABS(ScreenGfxPos) + ScrollStepSize == TILEX ||
+         ABS(ScreenGfxPos) == ScrollStepSize ||
+         redraw_tiles > REDRAWTILES_THRESHOLD)
+       XCopyArea(display, buffer, window, gc, fx, fy, SXSIZE, SYSIZE, SX, SY);
     }
     redraw_mask &= ~REDRAW_MAIN;
   }