Implement -rankOffset option

This option is useful on boards with blacked-out ranks, to force rank
number one to be a higher up.

diff --git a/args.h b/args.h
index f0e6423..7e39735 100644 (file)
--- a/args.h
+++ b/args.h
@@ -634,6 +634,7 @@ ArgDescriptor argDescriptors[] = {
   { "oneClickMove", ArgBoolean, (void *) &appData.oneClick, TRUE, (ArgIniType) FALSE },
   { "boardWidth", ArgInt, (void *) &appData.NrFiles, FALSE, (ArgIniType) -1 },
   { "boardHeight", ArgInt, (void *) &appData.NrRanks, FALSE, (ArgIniType) -1 },
+  { "rankOffset", ArgInt, (void *) &appData.rankOffset, FALSE, (ArgIniType) 0 },
   { "holdingsSize", ArgInt, (void *) &appData.holdingsSize, FALSE, (ArgIniType) -1 },
   { "defaultMatchGames", ArgInt, (void *) &appData.defaultMatchGames, TRUE, (ArgIniType) 10 },
   { "matchPause", ArgInt, (void *) &appData.matchPause, TRUE, (ArgIniType) 10000 },

diff --git a/common.h b/common.h
index 492c507..6239e13 100644 (file)
--- a/common.h
+++ b/common.h
@@ -186,7 +186,7 @@ typedef char *String;
 #define EP_FILE      CASTLING][(BOARD_FILES-3) /* [HGM] in upper rank        */
 #define EP_STATUS    CASTLING][(BOARD_FILES-2) /* [HGM] in upper rank        */
 #define HOLDINGS_SET CASTLING][(BOARD_FILES-1) /* [HGM] in upper-right corner*/
-#define ONE          ('1'-(BOARD_HEIGHT==10))  /* [HGM] foremost board rank  */
+#define ONE          ('1'-(BOARD_HEIGHT==10)-appData.rankOffset)  /* [HGM] foremost board rank  */
 #define AAA          ('a'-BOARD_LEFT)          /* [HGM] leftmost board file  */
 #define VIRGIN_W                 1             /* [HGM] flags in Board[VIRGIN][X] */
 #define VIRGIN_B                 2
@@ -689,6 +689,7 @@ typedef struct {
     /* [HGM] Board size */
     int NrFiles;
     int NrRanks;
+    int rankOffset;
     int holdingsSize;
     int matchPause;
     char * pieceToCharTable;