+#else
+ int i, x, y;
+#endif
+
+ /* only horizontal XOR vertical scroll direction allowed */
+ if ((dx == 0 && dy == 0) || (dx != 0 && dy != 0))
+ return;
+
+#if 1
+ if (bitmap_db_field2 == NULL)
+ bitmap_db_field2 = CreateBitmap(FXSIZE, FYSIZE, DEFAULT_DEPTH);
+
+ BlitBitmap(drawto_field, bitmap_db_field2,
+ FX + TILEX * (dx == -1) - softscroll_offset,
+ FY + TILEY * (dy == -1) - softscroll_offset,
+ SXSIZE - TILEX * (dx != 0) + 2 * softscroll_offset,
+ SYSIZE - TILEY * (dy != 0) + 2 * softscroll_offset,
+ FX + TILEX * (dx == 1) - softscroll_offset,
+ FY + TILEY * (dy == 1) - softscroll_offset);
+ BlitBitmap(bitmap_db_field2, drawto_field,
+ FX + TILEX * (dx == 1) - softscroll_offset,
+ FY + TILEY * (dy == 1) - softscroll_offset,
+ SXSIZE - TILEX * (dx != 0) + 2 * softscroll_offset,
+ SYSIZE - TILEY * (dy != 0) + 2 * softscroll_offset,
+ FX + TILEX * (dx == 1) - softscroll_offset,
+ FY + TILEY * (dy == 1) - softscroll_offset);
+
+#else
+
+#if 1
+ int xsize = (BX2 - BX1 + 1);
+ int ysize = (BY2 - BY1 + 1);
+ int start = (dx != 0 ? (dx == -1 ? BX1 : BX2) : (dy == -1 ? BY1 : BY2));
+ int end = (dx != 0 ? (dx == -1 ? BX2 : BX1) : (dy == -1 ? BY2 : BY1));
+ int step = (start < end ? +1 : -1);
+
+ for (i = start; i != end; i += step)
+ {
+ BlitBitmap(drawto_field, drawto_field,
+ FX + TILEX * (dx != 0 ? i + step : 0),
+ FY + TILEY * (dy != 0 ? i + step : 0),
+ TILEX * (dx != 0 ? 1 : xsize),
+ TILEY * (dy != 0 ? 1 : ysize),
+ FX + TILEX * (dx != 0 ? i : 0),
+ FY + TILEY * (dy != 0 ? i : 0));
+ }
+
+#else
+
+ int softscroll_offset = (setup.soft_scrolling ? TILEX : 0);