X-Git-Url: https://git.artsoft.org/?a=blobdiff_plain;f=src%2Fgame_sp%2FDDScrollBuffer.c;h=e11c561c1688311680af260cd98d423265e99c12;hb=66815b1b9363de7741defc14e5f7f0dc2183781a;hp=86a6aad09cb2897c9b860035ab0cbff4c3d6136f;hpb=fe656a41b406b06d9dc5b93d01191d52b1da3b4d;p=rocksndiamonds.git

diff --git a/src/game_sp/DDScrollBuffer.c b/src/game_sp/DDScrollBuffer.c
index 86a6aad0..e11c561c 100644
--- a/src/game_sp/DDScrollBuffer.c
+++ b/src/game_sp/DDScrollBuffer.c
@@ -31,8 +31,220 @@ DirectDrawSurface7 mPrimary;
 long mWidth, mHeight;
 long mhWnd;
 long mScrollX, mScrollY;
+long mScrollX_last, mScrollY_last;
 long mDestXOff, mDestYOff;
 
+long ScreenBuffer[MAX_BUF_XSIZE][MAX_BUF_YSIZE];
+boolean redraw[MAX_BUF_XSIZE][MAX_BUF_YSIZE];
+
+int TEST_flag = 0;
+
+
+static void ScrollPlayfield()
+{
+  int sx_last = mScrollX_last / TILEX;
+  int sy_last = mScrollY_last / TILEY;
+  int sx = mScrollX / TILEX;
+  int sy = mScrollY / TILEY;
+  int dx = (sx < sx_last ? +1 : sx > sx_last ? -1 : 0);
+  int dy = (sy < sy_last ? +1 : sy > sy_last ? -1 : 0);
+  int x, y;
+  int sx1 = mScrollX - TILEX;
+  int sy1 = mScrollY - TILEY;
+  int sx2 = mScrollX + SXSIZE + TILEX;
+  int sy2 = mScrollY + SYSIZE + TILEY;
+  int x1 = sx1 / TILEX;
+  int y1 = sy1 / TILEY;
+  int x2 = sx2 / TILEX;
+  int y2 = sy2 / TILEY;
+#if 1
+  int buf_xsize = SCR_FIELDX + 2;
+  int buf_ysize = SCR_FIELDY + 2;
+#else
+  int buf_xsize = MAX_BUF_XSIZE;
+  int buf_ysize = MAX_BUF_YSIZE;
+#endif
+
+  BlitBitmap(screenBitmap, screenBitmap,
+             TILEX * (dx == -1),
+             TILEY * (dy == -1),
+             (MAX_BUF_XSIZE * TILEX) - TILEX * (dx != 0),
+             (MAX_BUF_YSIZE * TILEY) - TILEY * (dy != 0),
+             TILEX * (dx == 1),
+             TILEY * (dy == 1));
+
+  /* when scrolling the whole playfield, do not redraw single tiles */
+  for (x = 0; x < MAX_BUF_XSIZE; x++)
+    for (y = 0; y < MAX_BUF_YSIZE; y++)
+      redraw[x][y] = FALSE;
+  redraw_tiles = 0;
+
+  for (y = DisplayMinY; y <= DisplayMaxY; y++)
+  {
+    for (x = DisplayMinX; x <= DisplayMaxX; x++)
+    {
+      if (x >= x1 && x < x2 && y >= y1 && y < y2)
+      {
+	int sx = x - x1;
+	int sy = y - y1;
+	int tsi = GetSI(x, y);
+	long id = ((PlayField16[tsi]) |
+		   (PlayField8[tsi] << 16) |
+		   (DisPlayField[tsi] << 24));
+
+#if 0
+#if 1
+	printf("::: [%d] %d [%d, %d] [%d]\n", dx, sx, x, y, buf_xsize);
+#else
+	if (sx == 0 || sx == MAX_BUF_XSIZE - 1)
+	  printf("::: %d, %d\n", dx, sx);
+#endif
+#endif
+
+	if ((dx == -1 && sx == buf_xsize - 1) ||
+	    (dx == +1 && sx == 0) ||
+	    (dy == -1 && sy == buf_ysize - 1) ||
+	    (dy == +1 && sy == 0))
+	{
+	  printf("::: %d, %d\n", sx, sy);
+
+	  TEST_flag = 1;
+
+	  DrawFieldNoAnimated(x, y);
+	  DrawFieldAnimated(x, y);
+
+	  TEST_flag = 0;
+	}
+
+	ScreenBuffer[sx][sy] = id;
+      }
+    }
+  }
+}
+
+static void ScrollPlayfieldIfNeededExt(boolean reset)
+{
+  int sx_last = mScrollX_last / TILEX;
+  int sy_last = mScrollY_last / TILEY;
+  int sx = mScrollX / TILEX;
+  int sy = mScrollY / TILEY;
+  boolean initialized = (mScrollX_last != -1 && mScrollY_last != -1);
+
+  if (reset)
+  {
+    mScrollX_last = -1;
+    mScrollY_last = -1;
+
+    return;
+  }
+
+#if 0
+  if (mScrollX_last == -1 || mScrollY_last == -1)
+  {
+    mScrollX_last = mScrollX;
+    mScrollY_last = mScrollY;
+
+    return;
+  }
+#endif
+
+  if (initialized && (sx != sx_last || sy != sy_last))
+    ScrollPlayfield();
+
+  mScrollX_last = mScrollX;
+  mScrollY_last = mScrollY;
+}
+
+static void ScrollPlayfieldIfNeeded()
+{
+  ScrollPlayfieldIfNeededExt(FALSE);
+}
+
+void InitScrollPlayfield()
+{
+  ScrollPlayfieldIfNeededExt(TRUE);
+}
+
+void UpdatePlayfield()
+{
+  int x, y;
+  int sx1 = mScrollX - TILEX;
+  int sy1 = mScrollY - TILEY;
+  int sx2 = mScrollX + SXSIZE + TILEX;
+  int sy2 = mScrollY + SYSIZE + TILEY;
+  int x1 = sx1 / TILEX;
+  int y1 = sy1 / TILEY;
+  int x2 = sx2 / TILEX;
+  int y2 = sy2 / TILEY;
+
+  for (y = DisplayMinY; y <= DisplayMaxY; y++)
+  {
+    for (x = DisplayMinX; x <= DisplayMaxX; x++)
+    {
+      if (x >= x1 && x < x2 && y >= y1 && y < y2)
+      {
+	int sx = x - x1;
+	int sy = y - y1;
+	int tsi = GetSI(x, y);
+	long id = ((PlayField16[tsi]) |
+		   (PlayField8[tsi] << 16) |
+		   (DisPlayField[tsi] << 24));
+	boolean redraw_screen_tile = (ScreenBuffer[sx][sy] != id);
+
+#if 0
+	if (LowByte(PlayField16[tsi]) == fiMurphy)
+	  continue;
+#endif
+
+	if (redraw_screen_tile)
+	{
+#if 0
+	  DrawFieldNoAnimated(x, y);
+	  DrawFieldAnimated(x, y);
+#endif
+
+	  ScreenBuffer[sx][sy] = id;
+
+	  redraw[sx][sy] = TRUE;
+	  redraw_tiles++;
+	}
+      }
+    }
+  }
+}
+
+void OLD_UpdatePlayfield()
+{
+  int x, y;
+  int left = mScrollX / TILEX;
+  int top  = mScrollY / TILEY;
+
+  for (y = top; y < top + MAX_BUF_YSIZE; y++)
+  {
+    for (x = left; x < left + MAX_BUF_XSIZE; x++)
+    {
+      int sx = x % MAX_BUF_XSIZE;
+      int sy = y % MAX_BUF_YSIZE;
+      int tsi = GetSI(x, y);
+      long id = ((PlayField16[tsi]) |
+		 (PlayField8[tsi] << 16) |
+		 (DisPlayField[tsi] << 24));
+      boolean redraw_screen_tile = (ScreenBuffer[sx][sy] != id);
+
+      if (redraw_screen_tile)
+      {
+        DrawFieldNoAnimated(x, y);
+        DrawFieldAnimated(x, y);
+
+	ScreenBuffer[sx][sy] = id;
+
+	redraw[sx][sy] = TRUE;
+	redraw_tiles++;
+      }
+    }
+  }
+}
+
 void DDScrollBuffer_Let_DestXOff(long NewVal)
 {
   mDestXOff = NewVal;
@@ -131,30 +343,144 @@ void DDScrollBuffer_Cls(int BackColor)
   Buffer.BltColorFill(EmptyRect, BackColor);
 }
 
-void DDScrollBuffer_Blt()
+
+/* copy the entire screen to the window at the scroll position */
+
+void BlitScreenToBitmap_SP(Bitmap *target_bitmap)
+{
+  int sx = TILEX + mScrollX % TILEX;
+  int sy = TILEY + mScrollY % TILEY;
+
+  BlitBitmap(screenBitmap, target_bitmap, sx, sy,
+	     SCR_FIELDX * TILEX, SCR_FIELDY * TILEY, SX, SY);
+}
+
+void OLD_BlitScreenToBitmap_SP(Bitmap *target_bitmap)
+{
+  int x = mScrollX % (MAX_BUF_XSIZE * TILEX);
+  int y = mScrollY % (MAX_BUF_YSIZE * TILEY);
+
+  if (x < 2 * TILEX && y < 2 * TILEY)
+  {
+    BlitBitmap(screenBitmap, target_bitmap, x, y,
+	       SCR_FIELDX * TILEX, SCR_FIELDY * TILEY, SX, SY);
+  }
+  else if (x < 2 * TILEX && y >= 2 * TILEY)
+  {
+    BlitBitmap(screenBitmap, target_bitmap, x, y,
+	       SCR_FIELDX * TILEX, MAX_BUF_YSIZE * TILEY - y,
+	       SX, SY);
+    BlitBitmap(screenBitmap, target_bitmap, x, 0,
+	       SCR_FIELDX * TILEX, y - 2 * TILEY,
+	       SX, SY + MAX_BUF_YSIZE * TILEY - y);
+  }
+  else if (x >= 2 * TILEX && y < 2 * TILEY)
+  {
+    BlitBitmap(screenBitmap, target_bitmap, x, y,
+	       MAX_BUF_XSIZE * TILEX - x, SCR_FIELDY * TILEY,
+	       SX, SY);
+    BlitBitmap(screenBitmap, target_bitmap, 0, y,
+	       x - 2 * TILEX, SCR_FIELDY * TILEY,
+	       SX + MAX_BUF_XSIZE * TILEX - x, SY);
+  }
+  else
+  {
+    BlitBitmap(screenBitmap, target_bitmap, x, y,
+	       MAX_BUF_XSIZE * TILEX - x, MAX_BUF_YSIZE * TILEY - y,
+	       SX, SY);
+    BlitBitmap(screenBitmap, target_bitmap, 0, y,
+	       x - 2 * TILEX, MAX_BUF_YSIZE * TILEY - y,
+	       SX + MAX_BUF_XSIZE * TILEX - x, SY);
+    BlitBitmap(screenBitmap, target_bitmap, x, 0,
+	       MAX_BUF_XSIZE * TILEX - x, y - 2 * TILEY,
+	       SX, SY + MAX_BUF_YSIZE * TILEY - y);
+    BlitBitmap(screenBitmap, target_bitmap, 0, 0,
+	       x - 2 * TILEX, y - 2 * TILEY,
+	       SX + MAX_BUF_XSIZE * TILEX - x, SY + MAX_BUF_YSIZE * TILEY - y);
+  }
+}
+
+void BackToFront_SP(void)
+{
+  static boolean scrolling_last = FALSE;
+  int left = mScrollX / TILEX;
+  int top  = mScrollY / TILEY;
+  boolean scrolling = (mScrollX % TILEX != 0 || mScrollY % TILEY != 0);
+  int x, y;
+
+  SyncDisplay();
+
+  if (1 ||
+      redraw_tiles > REDRAWTILES_THRESHOLD || scrolling || scrolling_last)
+  {
+    /* blit all (up to four) parts of the scroll buffer to the backbuffer */
+    BlitScreenToBitmap_SP(backbuffer);
+
+    /* blit the completely updated backbuffer to the window (in one blit) */
+    BlitBitmap(backbuffer, window, SX, SY, SXSIZE, SYSIZE, SX, SY);
+  }
+  else
+  {
+    for (x = 0; x < SCR_FIELDX; x++)
+    {
+      for (y = 0; y < SCR_FIELDY; y++)
+      {
+	int xx = (left + x) % MAX_BUF_XSIZE;
+	int yy = (top  + y) % MAX_BUF_YSIZE;
+
+	if (redraw[xx][yy])
+	  BlitBitmap(screenBitmap, window,
+		     xx * TILEX, yy * TILEY, TILEX, TILEY,
+		     SX + x * TILEX, SY + y * TILEY);
+      }
+    }
+  }
+
+  FlushDisplay();
+
+  for (x = 0; x < MAX_BUF_XSIZE; x++)
+    for (y = 0; y < MAX_BUF_YSIZE; y++)
+      redraw[x][y] = FALSE;
+  redraw_tiles = 0;
+
+  scrolling_last = scrolling;
+}
+
+
+void DDScrollBuffer_Blt_Ext(Bitmap *target_bitmap)
 {
   RECT DR, SR;
   long tX, tY, L;
+  int sX, sY;
   // RECT ERect;
   // long Restore;
 
   if (NoDisplayFlag)
     return;
 
-
+#if 1
+  DR.left = 0;
+  DR.top = 0;
+  DR.right = SCR_FIELDX * TILEX;
+  DR.bottom = SCR_FIELDY * TILEY;
+#else
   // --- On Error GoTo BltEH
   DirectX.GetWindowRect(mhWnd, DR);
   // --- On Error GoTo 0
+#endif
 
   {
     tX = (DR.right - DR.left) / Stretch;
     tY = (DR.bottom - DR.top) / Stretch;
   }
+
   {
     SR.left = mScrollX + mDestXOff;
     SR.top = mScrollY + mDestYOff;
+
     SR.right = SR.left + tX;
     SR.bottom = SR.top + tY;
+
     //    If mWidth < SR.right Then
     //      SR.right = mWidth
     //      DR.right = DR.left + Stretch * (SR.right - SR.left)
@@ -172,6 +498,70 @@ void DDScrollBuffer_Blt()
     //      DR.top = DR.top - Stretch * (mScrollY + mDestYOff)
     //    End If
   }
+
+#if 1
+  SR.left = (SR.left < 0 ? 0 : SR.left);
+  SR.top  = (SR.top  < 0 ? 0 : SR.top);
+#endif
+
+#if 1
+  {
+    int full_xsize = (FieldWidth  - (menBorder.Checked ? 0 : 1)) * TILEX;
+    int full_ysize = (FieldHeight - (menBorder.Checked ? 0 : 1)) * TILEY;
+    int sxsize = SCR_FIELDX * TILEX;
+    int sysize = SCR_FIELDY * TILEY;
+
+    tX = (full_xsize < sxsize ? full_xsize : tX);
+    tY = (full_ysize < sysize ? full_ysize : tY);
+    sX = SX + (full_xsize < sxsize ? (sxsize - full_xsize) / 2 : 0);
+    sY = SY + (full_ysize < sysize ? (sysize - full_ysize) / 2 : 0);
+  }
+#endif
+
+#if 1
+  if (!menBorder.Checked)
+  {
+    SR.left += 16;
+    SR.top  += 16;
+  }
+#endif
+
+#if 1
+
+#if 1
+  printf("::: DDScrollBuffer.c: DDScrollBuffer_Blt(): blit from %d, %d [%ld, %ld] [%ld, %ld] [%ld, %ld]\n",
+	 SR.left, SR.top, mScrollX, mScrollY, mDestXOff, mDestYOff, tX, tY);
+#endif
+
+#if 0
+  /* !!! quick and dirty -- FIX THIS !!! */
+  if (tape.playing && tape.fast_forward &&
+      target_bitmap == window &&
+      (FrameCounter % 2) != 0)
+    printf("::: FrameCounter == %d\n", FrameCounter);
+#endif
+
+#if 1
+  SyncDisplay();
+#endif
+
+#if 1
+  BlitBitmap(screenBitmap, target_bitmap,
+	     SR.left, SR.top, tX, tY, sX, sY);
+#else
+  BlitBitmap(screenBitmap, target_bitmap,
+	     SR.left, SR.top,
+             SCR_FIELDX * TILEX, SCR_FIELDY * TILEY, SX, SY);
+#endif
+
+#if 1
+  FlushDisplay();
+#endif
+
+  return;
+
+#endif
+
   // DDraw.WaitForVerticalBlank DDWAITVB_BLOCKBEGIN, 0
   if (IS_NOTHING(&Buffer, sizeof(Buffer)))
     return;
@@ -283,6 +673,23 @@ void DDScrollBuffer_Blt()
   // BltEH:
 }
 
+void DDScrollBuffer_Blt()
+{
+#if 1
+
+#if 1
+  BackToFront_SP();
+#else
+  /* !!! TEST ONLY !!! */
+  BlitBitmap(screenBitmap, window,
+	     0, 0, SCR_FIELDX * TILEX, SCR_FIELDY * TILEY, SX, SY);
+#endif
+
+#else
+  DDScrollBuffer_Blt_Ext(window);
+#endif
+}
+
 void DDScrollBuffer_ScrollTo(int X, int Y)
 {
   if (NoDisplayFlag)
@@ -294,6 +701,15 @@ void DDScrollBuffer_ScrollTo(int X, int Y)
   mScrollY = Y;
   ScrollX = mScrollX;
   ScrollY = mScrollY;
+
+#if 0
+  printf("::: DDScrollBuffer.c: DDScrollBuffer_ScrollTo():  mScroll: %ld, %ld [%d, %d]\n",
+	 mScrollX, mScrollY, X, Y);
+#endif
+
+#if 1
+  ScrollPlayfieldIfNeeded();
+#endif
 }
 
 void DDScrollBuffer_ScrollTowards(int X, int Y, double Step)
@@ -303,6 +719,11 @@ void DDScrollBuffer_ScrollTowards(int X, int Y, double Step)
   if (NoDisplayFlag)
     return;
 
+#if 0
+  printf("::: DDScrollBuffer.c: DDScrollBuffer_ScrollTowards(): (1) mScroll: %ld, %ld [%d, %d, %f]\n",
+	 mScrollX, mScrollY, X, Y, Step);
+#endif
+
   X = X / Stretch;
   Y = Y / Stretch;
   dx = X - mScrollX;
@@ -320,6 +741,15 @@ void DDScrollBuffer_ScrollTowards(int X, int Y, double Step)
   mScrollY = mScrollY + dY * r;
   ScrollX = mScrollX;
   ScrollY = mScrollY;
+
+#if 0
+  printf("::: DDScrollBuffer.c: DDScrollBuffer_ScrollTowards(): (2) mScroll: %ld, %ld [%d, %d, %f]\n",
+	 mScrollX, mScrollY, X, Y, Step);
+#endif
+
+#if 1
+  ScrollPlayfieldIfNeeded();
+#endif
 }
 
 void DDScrollBuffer_SoftScrollTo(int X, int Y, long TimeMS, int FPS)
@@ -333,10 +763,6 @@ void DDScrollBuffer_SoftScrollTo(int X, int Y, long TimeMS, int FPS)
   long oldX, oldY, maxD;
   static boolean AlreadyRunning = False;
 
-#if 1
-  printf("::: 3: X,Y ==  %d, %d [%f]\n", X, Y, Stretch);
-#endif
-
   if (NoDisplayFlag)
     return;
 
@@ -350,7 +776,7 @@ void DDScrollBuffer_SoftScrollTo(int X, int Y, long TimeMS, int FPS)
   Y = Y / Stretch;
   dx = X - mScrollX;
   dY = Y - mScrollY;
-  maxD = (Abs(dx) < Abs(dY) ?  Abs(dY) :  Abs(dY));
+  maxD = (Abs(dx) < Abs(dY) ? Abs(dY) : Abs(dx));
   StepCount = FPS * (TimeMS / (double)1000);
   if (StepCount > maxD)
     StepCount = maxD;
@@ -358,12 +784,6 @@ void DDScrollBuffer_SoftScrollTo(int X, int Y, long TimeMS, int FPS)
   if (StepCount == 0)
     StepCount = 1;
 
-#if 1
-  printf("::: MARK 1: %f, %d, %ld, %ld [%d, %d, %ld, %ld]\n",
-	 tStep, FPS, TimeMS, maxD,
-	 X, Y, mScrollX, mScrollY);
-#endif
-
   dT = 1000 / FPS;
   tStep = (double)1 / StepCount;
   oldX = mScrollX;
@@ -388,10 +808,6 @@ void DDScrollBuffer_SoftScrollTo(int X, int Y, long TimeMS, int FPS)
     // Blt();
   }
 
-#if 1
-  printf("::: MARK 2\n");
-#endif
-
   if (UserDragFlag)
     goto SoftScrollEH;
 
@@ -407,4 +823,13 @@ void DDScrollBuffer_SoftScrollTo(int X, int Y, long TimeMS, int FPS)
 
 SoftScrollEH:
   AlreadyRunning = False;
+
+#if 0
+  printf("::: DDScrollBuffer.c: DDScrollBuffer_SoftScrollTo(): mScroll: %ld, %ld\n",
+	 mScrollX, mScrollY);
+#endif
+
+#if 1
+  ScrollPlayfieldIfNeeded();
+#endif
 }