Fix parsing of OO castling when redefined

[xboard.git] / parser.c

diff --git a/parser.c b/parser.c
index 13caa9f..4cc2f03 100644 (file)
--- a/parser.c
+++ b/parser.c
@@ -1,7 +1,7 @@
 /*
  * parser.c --
  *
- * Copyright 2011, 2012, 2013, 2014 Free Software Foundation, Inc.
+ * Copyright 2011, 2012, 2013, 2014, 2015 Free Software Foundation, Inc.
  * ------------------------------------------------------------------------
  *
  * GNU XBoard is free software: you can redistribute it and/or modify
@@ -22,6 +22,7 @@
 
 #include "config.h"
 #include <stdio.h>
+#include <stdlib.h>
 #include <ctype.h>
 #include <string.h>
 #include "common.h"
@@ -619,12 +620,12 @@ badMove:// we failed to find algebraic move
                if (yyskipmoves) return (int) AmbiguousMove; /* not disambiguated */
 
                if (wom) {
-                   rf = 0;
-                   rt = 0;
+                   rf = castlingRank[0];
+                   rt = castlingRank[0];
                    king = WhiteKing;
                } else {
-                   rf = BOARD_HEIGHT-1;
-                   rt = BOARD_HEIGHT-1;
+                   rf = castlingRank[3];
+                   rt = castlingRank[3];
                    king = BlackKing;
                }
                ff = (BOARD_WIDTH-1)>>1; // this would be d-file
@@ -632,8 +633,12 @@ badMove:// we failed to find algebraic move
                    /* ICS wild castling */
                    ft = castlingType == 1 ? BOARD_LEFT+1 : (gameInfo.variant == VariantJanus ? BOARD_RGHT-2 : BOARD_RGHT-3);
                } else {
+                   char *q;
                    ff = BOARD_WIDTH>>1; // e-file
                    ft = castlingType == 1 ? BOARD_RGHT-2 : BOARD_LEFT+2;
+                   if(pieceDesc[king] && (q = strchr(pieceDesc[king], 'O'))) { // redefined to non-default King stride
+                       ft = (castlingType == 1 ? ff + atoi(q+1) : ff - atoi(q+1));
+                   }
                }
                if(PosFlags(0) & F_FRC_TYPE_CASTLING) {
                    if (wom) {