X-Git-Url: http://winboard.nl/cgi-bin?a=blobdiff_plain;f=backend.c;h=1ba1fbec152a29082af828b80af56c125d427a58;hb=1e5d47455a22ab83a187f6b6316b6846dcdbf66e;hp=1e9787e938ca78b2c79e8e8332d51316d588d3bb;hpb=5ee8e941988eabf2627f6228ae7f78fee3b685bf;p=xboard.git

diff --git a/backend.c b/backend.c
index 1e9787e..1ba1fbe 100644
--- a/backend.c
+++ b/backend.c
@@ -7207,7 +7207,7 @@ LeftClick (ClickType clickType, int xPix, int yPix)
 	    }
 	    promoDefaultAltered = FALSE;
 	    MarkTargetSquares(1);
-	   if(!second || appData.oneClick && !OnlyMove(&x, &y, TRUE)) {
+	   if(!(second && appData.oneClick && OnlyMove(&x, &y, TRUE))) {
 	    if (appData.highlightDragging) {
 		SetHighlights(x, y, -1, -1);
 	    } else {
@@ -7257,6 +7257,7 @@ LeftClick (ClickType clickType, int xPix, int yPix)
 	    second = sweepSelecting = 0;
 	    fromX = fromY = -1;
 	    gatingPiece = EmptySquare;
+	    MarkTargetSquares(1);
 	    ClearHighlights();
 	    gotPremove = 0;
 	    ClearPremoveHighlights();
@@ -7761,6 +7762,7 @@ Adjudicate (ChessProgramState *cps)
 	      case MT_NONE:
 	      default:
 		break;
+	      case MT_STEALMATE:
 	      case MT_STALEMATE:
 	      case MT_STAINMATE:
 		reason = "Xboard adjudication: Stalemate";
@@ -11720,22 +11722,40 @@ void
 PackMove (int fromX, int fromY, int toX, int toY, ChessSquare promoPiece)
 {
     int sq = fromX + (fromY<<4);
-    int piece = quickBoard[sq];
+    int piece = quickBoard[sq], rook;
     quickBoard[sq] = 0;
     moveDatabase[movePtr].to = pieceList[piece] = sq = toX + (toY<<4);
-    if(piece == pieceList[1] && fromY == toY && (toX > fromX+1 || toX < fromX-1) && fromX != BOARD_LEFT && fromX != BOARD_RGHT-1) {
+    if(piece == pieceList[1] && fromY == toY) {
+      if((toX > fromX+1 || toX < fromX-1) && fromX != BOARD_LEFT && fromX != BOARD_RGHT-1) {
 	int from = toX>fromX ? BOARD_RGHT-1 : BOARD_LEFT;
 	moveDatabase[movePtr++].piece = Q_WCASTL;
 	quickBoard[sq] = piece;
 	piece = quickBoard[from]; quickBoard[from] = 0;
 	moveDatabase[movePtr].to = pieceList[piece] = sq = toX>fromX ? sq-1 : sq+1;
+      } else if((rook = quickBoard[sq]) && pieceType[rook] == WhiteRook) { // FRC castling
+	quickBoard[sq] = 0; // remove Rook
+	moveDatabase[movePtr].to = sq = (toX>fromX ? BOARD_RGHT-2 : BOARD_LEFT+2); // King to-square
+	moveDatabase[movePtr++].piece = Q_WCASTL;
+	quickBoard[sq] = pieceList[1]; // put King
+	piece = rook;
+	moveDatabase[movePtr].to = pieceList[rook] = sq = toX>fromX ? sq-1 : sq+1;
+      }
     } else
-    if(piece == pieceList[2] && fromY == toY && (toX > fromX+1 || toX < fromX-1) && fromX != BOARD_LEFT && fromX != BOARD_RGHT-1) {
+    if(piece == pieceList[2] && fromY == toY) {
+      if((toX > fromX+1 || toX < fromX-1) && fromX != BOARD_LEFT && fromX != BOARD_RGHT-1) {
 	int from = (toX>fromX ? BOARD_RGHT-1 : BOARD_LEFT) + (BOARD_HEIGHT-1 <<4);
 	moveDatabase[movePtr++].piece = Q_BCASTL;
 	quickBoard[sq] = piece;
 	piece = quickBoard[from]; quickBoard[from] = 0;
 	moveDatabase[movePtr].to = pieceList[piece] = sq = toX>fromX ? sq-1 : sq+1;
+      } else if((rook = quickBoard[sq]) && pieceType[rook] == BlackRook) { // FRC castling
+	quickBoard[sq] = 0; // remove Rook
+	moveDatabase[movePtr].to = sq = (toX>fromX ? BOARD_RGHT-2 : BOARD_LEFT+2);
+	moveDatabase[movePtr++].piece = Q_BCASTL;
+	quickBoard[sq] = pieceList[2]; // put King
+	piece = rook;
+	moveDatabase[movePtr].to = pieceList[rook] = sq = toX>fromX ? sq-1 : sq+1;
+      }
     } else
     if(epOK && (pieceType[piece] == WhitePawn || pieceType[piece] == BlackPawn) && fromX != toX && quickBoard[sq] == 0) {
 	quickBoard[(fromY<<4)+toX] = 0;