From: H.G.Muller <hgm@hgm-xboard.(none)>
Date: Fri, 26 Sep 2014 18:24:05 +0000 (+0200)
Subject: Fix reset of 50-move counter on FRC castling
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=94d2b2b896207fac048806e05c8a114297b1a513;p=xboard.git

Fix reset of 50-move counter on FRC castling

The FxR internal representation was taken a bit too seriously!
---

diff --git a/backend.c b/backend.c
index 94e6393..f988046 100644
--- a/backend.c
+++ b/backend.c
@@ -9975,6 +9975,7 @@ ApplyMove (int fromX, int fromY, int toX, int toY, int promoChar, Board board)
     /* FRC castling assumed when king captures friendly rook. [HGM] or RxK for S-Chess */
     if (board[fromY][fromX] == WhiteKing && board[toY][toX] == WhiteRook ||
         board[fromY][fromX] == WhiteRook && board[toY][toX] == WhiteKing) {
+      board[EP_STATUS] = EP_NONE; // capture was fake!
       board[fromY][fromX] = EmptySquare;
       board[toY][toX] = EmptySquare;
       if((toX > fromX) != (piece == WhiteRook)) {
@@ -9984,6 +9985,7 @@ ApplyMove (int fromX, int fromY, int toX, int toY, int promoChar, Board board)
       }
     } else if (board[fromY][fromX] == BlackKing && board[toY][toX] == BlackRook ||
                board[fromY][fromX] == BlackRook && board[toY][toX] == BlackKing) {
+      board[EP_STATUS] = EP_NONE;
       board[fromY][fromX] = EmptySquare;
       board[toY][toX] = EmptySquare;
       if((toX > fromX) != (piece == BlackRook)) {