rnd-20100420-1-src

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

diff --git a/src/game_sp/DDScrollBuffer.c b/src/game_sp/DDScrollBuffer.c
index 816127b4ed9952ddd08104a90bd0c1de08771b1b..e8bd2fbce26221c29eb956408a597d7c962dd3d4 100644 (file)
--- a/src/game_sp/DDScrollBuffer.c
+++ b/src/game_sp/DDScrollBuffer.c
@@ -7,13 +7,16 @@
 #include <math.h>
 
 
-long mWidth, mHeight;
 long mScrollX, mScrollY;
 long mScrollX_last, mScrollY_last;
-long mDestXOff, mDestYOff;
 
+#if 1
+long ScreenBuffer[2 + MAX_PLAYFIELD_WIDTH + 2][2 + MAX_PLAYFIELD_HEIGHT + 2];
+boolean redraw[2 + MAX_PLAYFIELD_WIDTH + 2][2 + MAX_PLAYFIELD_HEIGHT + 2];
+#else
 long ScreenBuffer[MAX_BUF_XSIZE][MAX_BUF_YSIZE];
 boolean redraw[MAX_BUF_XSIZE][MAX_BUF_YSIZE];
+#endif
 
 
 void RestorePlayfield()
@@ -47,7 +50,7 @@ static void ScrollPlayfield(int dx, int dy)
   int y2 = mScrollY_last / TILEY + (SCR_FIELDY - 1) + 2;
   int x, y;
 
-  BlitBitmap(screenBitmap, screenBitmap,
+  BlitBitmap(bitmap_db_field_sp, bitmap_db_field_sp,
              TILEX * (dx == -1),
              TILEY * (dy == -1),
              (MAX_BUF_XSIZE * TILEX) - TILEX * (dx != 0),
@@ -103,8 +106,13 @@ static void ScrollPlayfieldIfNeededExt(boolean reset)
 
   if (mScrollX_last == -1 || mScrollY_last == -1)
   {
+#if 1
+    mScrollX_last = (mScrollX / TILESIZE) * TILESIZE;
+    mScrollY_last = (mScrollY / TILESIZE) * TILESIZE;
+#else
     mScrollX_last = mScrollX;
     mScrollY_last = mScrollY;
+#endif
 
     return;
   }
@@ -219,6 +227,15 @@ void BlitScreenToBitmap_SP(Bitmap *target_bitmap)
   int py = 2 * TILEY + (mScrollY - mScrollY_last) % TILEY;
   int sx, sy, sxsize, sysize;
 
+#if 0
+  printf("::: %d, %d / %d, %d / %ld, %ld (%ld, %ld) / %d, %d\n",
+        MurphyScreenXPos, MurphyScreenYPos,
+        ScreenScrollXPos, ScreenScrollYPos,
+        mScrollX, mScrollY,
+        mScrollX_last, mScrollY_last,
+        px, py);
+#endif
+
   int xsize = SXSIZE;
   int ysize = SYSIZE;
   int full_xsize = (FieldWidth  - (menBorder ? 0 : 1)) * TILEX;
@@ -229,13 +246,19 @@ void BlitScreenToBitmap_SP(Bitmap *target_bitmap)
   sx = SX + (full_xsize < xsize ? (xsize - full_xsize) / 2 : 0);
   sy = SY + (full_ysize < ysize ? (ysize - full_ysize) / 2 : 0);
 
-  if (!menBorder)
+  /* scroll correction for even number of visible tiles (half tile shifted) */
+  px += game_sp.scroll_xoffset;
+  py += game_sp.scroll_yoffset;
+
+#if 1
+  if (ExplosionShakeMurphy != 0)
   {
-    px += TILEX / 2;
-    py += TILEY / 2;
+    px += TILEX / 2 - GetSimpleRandom(TILEX + 1);
+    py += TILEY / 2 - GetSimpleRandom(TILEX + 1);
   }
+#endif
 
-  BlitBitmap(screenBitmap, target_bitmap, px, py, sxsize, sysize, sx, sy);
+  BlitBitmap(bitmap_db_field_sp, target_bitmap, px, py, sxsize, sysize, sx, sy);
 }
 
 void BackToFront_SP(void)
@@ -263,7 +286,7 @@ void BackToFront_SP(void)
        int yy = (top  + y) % MAX_BUF_YSIZE;
 
        if (redraw[xx][yy])
-         BlitBitmap(screenBitmap, window,
+         BlitBitmap(bitmap_db_field_sp, window,
                     xx * TILEX, yy * TILEY, TILEX, TILEY,
                     SX + x * TILEX, SY + y * TILEY);
       }
@@ -280,22 +303,13 @@ void BackToFront_SP(void)
   scrolling_last = scrolling;
 }
 
-void DDScrollBuffer_Blt()
-{
-  BackToFront_SP();
-}
-
 void DDScrollBuffer_ScrollTo(int X, int Y)
 {
   if (NoDisplayFlag)
     return;
 
-  X = X / Stretch;
-  Y = Y / Stretch;
-  mScrollX = X;
-  mScrollY = Y;
-  ScrollX = mScrollX;
-  ScrollY = mScrollY;
+  ScrollX = mScrollX = X;
+  ScrollY = mScrollY = Y;
 
   ScrollPlayfieldIfNeeded();
 }
@@ -307,8 +321,6 @@ void DDScrollBuffer_ScrollTowards(int X, int Y, double Step)
   if (NoDisplayFlag)
     return;
 
-  X = X / Stretch;
-  Y = Y / Stretch;
   dx = X - mScrollX;
   dY = Y - mScrollY;
 
@@ -321,10 +333,8 @@ void DDScrollBuffer_ScrollTowards(int X, int Y, double Step)
   else
     r = 1;
 
-  mScrollX = mScrollX + dx * r;
-  mScrollY = mScrollY + dY * r;
-  ScrollX = mScrollX;
-  ScrollY = mScrollY;
+  ScrollX = mScrollX = mScrollX + dx * r;
+  ScrollY = mScrollY = mScrollY + dY * r;
 
   ScrollPlayfieldIfNeeded();
 }
@@ -344,8 +354,7 @@ void DDScrollBuffer_SoftScrollTo(int X, int Y, long TimeMS, int FPS)
     return;
 
   AlreadyRunning = True;
-  X = X / Stretch;
-  Y = Y / Stretch;
+
   dx = X - mScrollX;
   dY = Y - mScrollY;
   maxD = (Abs(dx) < Abs(dY) ? Abs(dY) : Abs(dx));
@@ -364,16 +373,12 @@ void DDScrollBuffer_SoftScrollTo(int X, int Y, long TimeMS, int FPS)
 
   for (T = (double)tStep; T <= (double)1; T += tStep)
   {
-    mScrollX = oldX + T * dx;
-    mScrollY = oldY + T * dY;
-    ScrollX = mScrollX;
-    ScrollY = mScrollY;
+    ScrollX = mScrollX = oldX + T * dx;
+    ScrollY = mScrollY = oldY + T * dY;
   }
 
-  mScrollX = X;
-  mScrollY = Y;
-  ScrollX = mScrollX;
-  ScrollY = mScrollY;
+  ScrollX = mScrollX = X;
+  ScrollY = mScrollY = Y;
 
   AlreadyRunning = False;