-
- 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);
+ int xsize = SXSIZE;
+ int ysize = SYSIZE;
+ int full_xsize = lev.width * TILEX;
+ int full_ysize = lev.height * TILEY;
+ int sx = SX + (full_xsize < xsize ? (xsize - full_xsize) / 2 : 0);
+ int sy = SY + (full_ysize < ysize ? (ysize - full_ysize) / 2 : 0);
+ int sxsize = (full_xsize < xsize ? full_xsize : xsize);
+ int sysize = (full_ysize < ysize ? full_ysize : ysize);
+ int xxsize = MAX_BUF_XSIZE * TILEX - x;
+ int yysize = MAX_BUF_YSIZE * TILEY - y;
+ int xoffset = 2 * CAVE_BUFFER_XOFFSET * TILEX;
+ int yoffset = 2 * CAVE_BUFFER_YOFFSET * TILEY;
+
+ if (x < xoffset && y < yoffset)
+ {
+ BlitBitmap(screenBitmap, target_bitmap, x, y, sxsize, sysize,
+ sx, sy);
+ }
+ else if (x < xoffset && y >= yoffset)
+ {
+ BlitBitmap(screenBitmap, target_bitmap, x, y, sxsize, yysize,
+ sx, sy);
+ BlitBitmap(screenBitmap, target_bitmap, x, 0, sxsize, y - yoffset,
+ sx, sy + yysize);
+ }
+ else if (x >= xoffset && y < yoffset)
+ {
+ BlitBitmap(screenBitmap, target_bitmap, x, y, xxsize, sysize,
+ sx, sy);
+ BlitBitmap(screenBitmap, target_bitmap, 0, y, x - xoffset, sysize,
+ sx + xxsize, sy);