extern int SCR_FIELDX, SCR_FIELDY;
-#define MAX_BUF_XSIZE (SCR_FIELDX + 2)
-#define MAX_BUF_YSIZE (SCR_FIELDY + 2)
+#define MAX_BUF_XSIZE (SCR_FIELDX + 2 * CAVE_BUFFER_XOFFSET)
+#define MAX_BUF_YSIZE (SCR_FIELDY + 2 * CAVE_BUFFER_YOFFSET)
/* often used screen positions */