+
+extern int SX, SY;
+
+#define SXSIZE (SCR_FIELDX * TILEX_VAR)
+#define SYSIZE (SCR_FIELDY * TILEY_VAR)
+#define FXSIZE (MAX_BUF_XSIZE * TILEX_VAR)
+#define FYSIZE (MAX_BUF_YSIZE * TILEY_VAR)
+
+extern int REAL_SX, REAL_SY;
+
+#define FULL_SXSIZE (2 + SXSIZE + 2)
+#define FULL_SYSIZE (2 + SYSIZE + 2)