rnd-20100224-1-src

[rocksndiamonds.git] / src / game_sp / DDScrollBuffer.c

diff --git a/src/game_sp/DDScrollBuffer.c b/src/game_sp/DDScrollBuffer.c
index 53cc5ea06330f63bd4371ce94fef15c1275fe68b..de5b237edceeea21b823462ed992fe30ca4e0943 100644 (file)
--- a/src/game_sp/DDScrollBuffer.c
+++ b/src/game_sp/DDScrollBuffer.c
@@ -39,6 +39,28 @@ boolean redraw[MAX_BUF_XSIZE][MAX_BUF_YSIZE];
 
 int TEST_flag = 0;
 
+void RestorePlayfield()
+{
+  int x1 = mScrollX / TILEX - 2;
+  int y1 = mScrollY / TILEY - 2;
+  int x2 = mScrollX / TILEX + (SCR_FIELDX - 1) + 2;
+  int y2 = mScrollY / TILEY + (SCR_FIELDY - 1) + 2;
+  int x, y;
+
+  DrawFrameIfNeeded();
+
+  for (y = DisplayMinY; y <= DisplayMaxY; y++)
+  {
+    for (x = DisplayMinX; x <= DisplayMaxX; x++)
+    {
+      if (x >= x1 && x <= x2 && y >= y1 && y <= y2)
+      {
+       DrawFieldNoAnimated(x, y);
+       DrawFieldAnimated(x, y);
+      }
+    }
+  }
+}
 
 static void ScrollPlayfield(int dx, int dy)
 {
@@ -184,7 +206,81 @@ void InitScrollPlayfield()
   ScrollPlayfieldIfNeededExt(TRUE);
 }
 
-void UpdatePlayfield()
+void UpdatePlayfield(boolean force_redraw)
+{
+  int x, y;
+#if 1
+  int num_redrawn = 0;
+#endif
+
+  for (y = DisplayMinY; y <= DisplayMaxY; y++)
+  {
+    for (x = DisplayMinX; x <= DisplayMaxX; x++)
+    {
+      int element = LowByte(PlayField16[GetSI(x, y)]);
+      int graphic = GfxGraphic[x][y];
+      int sync_frame = GfxFrame[x][y];
+      boolean redraw = force_redraw;
+
+#if 0
+      redraw = TRUE;   // !!! TEST ONLY -- ALWAYS REDRAW !!!
+#endif
+
+      if (graphic < 0)
+      {
+       GfxGraphicLast[x][y] = GfxGraphic[x][y];
+
+       continue;
+      }
+
+      if (element != GfxElementLast[x][y] &&
+         graphic == GfxGraphicLast[x][y])
+      {
+       /* element changed, but not graphic => disable updating graphic */
+
+       GfxElementLast[x][y] = element;
+       GfxGraphicLast[x][y] = GfxGraphic[x][y] = -1;
+
+       continue;
+      }
+
+      if (graphic != GfxGraphicLast[x][y])                     // new graphic
+      {
+       redraw = TRUE;
+
+       GfxElementLast[x][y] = element;
+       GfxGraphicLast[x][y] = GfxGraphic[x][y];
+       sync_frame = GfxFrame[x][y] = 0;
+      }
+      else if (isNextAnimationFrame_SP(graphic, sync_frame))   // new frame
+      {
+       redraw = TRUE;
+      }
+
+      if (redraw)
+      {
+       int sx = x * StretchWidth;
+       int sy = y * StretchWidth;
+
+#if 0
+       printf("::: REDRAW (%d, %d): %d, %d\n", x, y, graphic, sync_frame);
+#endif
+
+       StretchedSprites.BltImg(sx, sy, graphic, sync_frame);
+
+#if 1
+       num_redrawn++;
+#endif
+      }
+    }
+  }
+
+#if 0
+  printf("::: FRAME %d: %d redrawn\n", FrameCounter, num_redrawn);
+#endif
+}
+
+void UpdatePlayfield_TMP()
 {
   int x1 = mScrollX_last / TILEX - 2;
   int y1 = mScrollY_last / TILEY - 2;